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README.md

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+# Technical Documents: Shafts Process (v1, PNG)
+
+- ~1000 image→text pairs (stepped shafts → machining process)
+- Fixed 10–11 step template; right-side Z=0; tailstock rule (L/D>3 or total length > 190 mm)
+- Images converted from SVG to PNG (width 1400px)
+
+## Structure
+- images/
+- annotations/train|val|test.jsonl
+
+## Example
+```json
+{
+  "id": "Shaft_00668",
+  "image": "images/Shaft_00668.png",
+  "conversations": [
+    {
+      "from": "user",
+      "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."
+    },
+    {
+      "from": "assistant",
+      "value": "1. Select a steel round bar (material 16MnCr5) with diameter at least Ø35.4 mm and length at least 70.5 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø33.4 mm over length 14.4 mm (from Z=0.0 to Z=14.4).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø33.4 mm.\n6. Face the end and set Z=0.\n7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n8. Finish turn diameter Ø30.0 mm over length 51.1 mm (from Z=0.0 to Z=51.1).\n9. Break all edges (e.g., 2×45° where applicable).\n10. Remove the workpiece from the lathe."
+    }
+  ]
+}
+```

annotations/test.jsonl

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+{"id": "Shaft_00428", "image": "images/Shaft_00428.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material C45) with diameter at least Ø35.9 mm and length at least 265.2 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø33.9 mm over length 101.3 mm (from Z=0.0 to Z=101.3).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø33.9 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø30.0 mm over length 158.9 mm (from Z=0.0 to Z=158.9).\n10. Break all edges (e.g., 2×45° where applicable).\n11. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00965", "image": "images/Shaft_00965.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 42CrMo4) with diameter at least Ø34.6 mm and length at least 276.9 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø32.6 mm over length 85.0 mm (from Z=0.0 to Z=85.0).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø32.6 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø30.0 mm over length 186.9 mm (from Z=0.0 to Z=186.9).\n10. Break all edges (e.g., 2×45° where applicable).\n11. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00018", "image": "images/Shaft_00018.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 42CrMo4) with diameter at least Ø78.9 mm and length at least 76.2 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø76.9 mm over length 24.2 mm (from Z=0.0 to Z=24.2).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø76.9 mm.\n6. Face the end and set Z=0.\n7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n8. Finish turn diameter Ø66.0 mm over length 37.0 mm (from Z=0.0 to Z=47.0).\n9. Finish turn diameter Ø58.1 mm over length 10.0 mm (from Z=0.0 to Z=10.0).\n10. Break all edges (e.g., 2×45° where applicable).\n11. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00189", "image": "images/Shaft_00189.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a aluminium alloy round bar (material EN AW-6082) with diameter at least Ø32.0 mm and length at least 286.2 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø30.0 mm over length 227.8 mm (from Z=0.0 to Z=227.8).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø30.0 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø28.9 mm over length 53.4 mm (from Z=0.0 to Z=53.4).\n10. Break all edges (e.g., 2×45° where applicable).\n11. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00414", "image": "images/Shaft_00414.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 16MnCr5) with diameter at least Ø64.3 mm and length at least 88.7 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø62.3 mm over length 29.6 mm (from Z=0.0 to Z=29.6).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø62.3 mm.\n6. Face the end and set Z=0.\n7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n8. Finish turn diameter Ø42.3 mm over length 24.3 mm (from Z=0.0 to Z=54.1).\n9. Finish turn diameter Ø34.2 mm over length 19.0 mm (from Z=0.0 to Z=29.8).\n10. Finish turn diameter Ø30.0 mm over length 10.8 mm (from Z=0.0 to Z=10.8).\n11. Break all edges (e.g., 2×45° where applicable).\n12. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00589", "image": "images/Shaft_00589.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 42CrMo4) with diameter at least Ø59.4 mm and length at least 92.0 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø57.4 mm over length 6.4 mm (from Z=0.0 to Z=6.4).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø57.4 mm.\n6. Face the end and set Z=0.\n7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n8. Finish turn diameter Ø38.1 mm over length 14.4 mm (from Z=0.0 to Z=80.6).\n9. Finish turn diameter Ø34.9 mm over length 9.1 mm (from Z=0.0 to Z=66.2).\n10. Finish turn diameter Ø30.0 mm over length 57.1 mm (from Z=0.0 to Z=57.1).\n11. Break all edges (e.g., 2×45° where applicable).\n12. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00666", "image": "images/Shaft_00666.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 16MnCr5) with diameter at least Ø66.3 mm and length at least 272.6 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø64.3 mm over length 84.4 mm (from Z=0.0 to Z=84.4).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø64.3 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø53.1 mm over length 16.9 mm (from Z=0.0 to Z=183.2).\n10. Finish turn diameter Ø48.0 mm over length 18.0 mm (from Z=0.0 to Z=166.3).\n11. Finish turn diameter Ø34.0 mm over length 42.5 mm (from Z=0.0 to Z=148.3).\n12. Finish turn diameter Ø30.0 mm over length 105.8 mm (from Z=0.0 to Z=105.8).\n13. Break all edges (e.g., 2×45° where applicable).\n14. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00763", "image": "images/Shaft_00763.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 42CrMo4) with diameter at least Ø72.0 mm and length at least 175.5 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø70.0 mm over length 37.6 mm (from Z=0.0 to Z=37.6).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø70.0 mm.\n6. Face the end and set Z=0.\n7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n8. Finish turn diameter Ø60.1 mm over length 34.8 mm (from Z=0.0 to Z=132.9).\n9. Finish turn diameter Ø40.3 mm over length 22.5 mm (from Z=0.0 to Z=98.1).\n10. Finish turn diameter Ø30.0 mm over length 75.6 mm (from Z=0.0 to Z=75.6).\n11. Break all edges (e.g., 2×45° where applicable).\n12. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00221", "image": "images/Shaft_00221.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material C45) with diameter at least Ø70.2 mm and length at least 291.3 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø68.2 mm over length 41.1 mm (from Z=0.0 to Z=41.1).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø68.2 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø52.1 mm over length 17.2 mm (from Z=0.0 to Z=245.2).\n10. Finish turn diameter Ø36.5 mm over length 77.6 mm (from Z=0.0 to Z=228.0).\n11. Finish turn diameter Ø30.0 mm over length 150.4 mm (from Z=0.0 to Z=150.4).\n12. Break all edges (e.g., 2×45° where applicable).\n13. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00586", "image": "images/Shaft_00586.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 42CrMo4) with diameter at least Ø32.0 mm and length at least 230.0 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø30.0 mm over length 178.1 mm (from Z=0.0 to Z=178.1).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø30.0 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø26.1 mm over length 46.9 mm (from Z=0.0 to Z=46.9).\n10. Break all edges (e.g., 2×45° where applicable).\n11. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00581", "image": "images/Shaft_00581.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a stainless steel round bar (material 1.4301) with diameter at least Ø49.7 mm and length at least 301.9 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø47.7 mm over length 92.5 mm (from Z=0.0 to Z=92.5).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø47.7 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø31.2 mm over length 117.9 mm (from Z=0.0 to Z=204.4).\n10. Finish turn diameter Ø30.0 mm over length 86.5 mm (from Z=0.0 to Z=86.5).\n11. Break all edges (e.g., 2×45° where applicable).\n12. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00299", "image": "images/Shaft_00299.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 16MnCr5) with diameter at least Ø63.6 mm and length at least 115.0 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø61.6 mm over length 37.9 mm (from Z=0.0 to Z=37.9).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø61.6 mm.\n6. Face the end and set Z=0.\n7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n8. Finish turn diameter Ø49.0 mm over length 6.2 mm (from Z=0.0 to Z=72.1).\n9. Finish turn diameter Ø45.5 mm over length 12.1 mm (from Z=0.0 to Z=65.9).\n10. Finish turn diameter Ø37.2 mm over length 53.8 mm (from Z=0.0 to Z=53.8).\n11. Break all edges (e.g., 2×45° where applicable).\n12. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00638", "image": "images/Shaft_00638.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 42CrMo4) with diameter at least Ø32.4 mm and length at least 244.9 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø30.4 mm over length 174.5 mm (from Z=0.0 to Z=174.5).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø30.4 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø30.0 mm over length 65.4 mm (from Z=0.0 to Z=65.4).\n10. Break all edges (e.g., 2×45° where applicable).\n11. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00386", "image": "images/Shaft_00386.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 42CrMo4) with diameter at least Ø62.3 mm and length at least 89.8 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø60.3 mm over length 12.7 mm (from Z=0.0 to Z=12.7).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø60.3 mm.\n6. Face the end and set Z=0.\n7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n8. Finish turn diameter Ø49.3 mm over length 36.1 mm (from Z=0.0 to Z=72.1).\n9. Finish turn diameter Ø46.3 mm over length 36.0 mm (from Z=0.0 to Z=36.0).\n10. Break all edges (e.g., 2×45° where applicable).\n11. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00364", "image": "images/Shaft_00364.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 16MnCr5) with diameter at least Ø32.0 mm and length at least 290.4 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø30.0 mm over length 220.6 mm (from Z=0.0 to Z=220.6).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø30.0 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø22.1 mm over length 64.8 mm (from Z=0.0 to Z=64.8).\n10. Break all edges (e.g., 2×45° where applicable).\n11. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00879", "image": "images/Shaft_00879.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a aluminium alloy round bar (material EN AW-6082) with diameter at least Ø79.6 mm and length at least 175.3 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø77.6 mm over length 47.0 mm (from Z=0.0 to Z=47.0).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø77.6 mm.\n6. Face the end and set Z=0.\n7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n8. Finish turn diameter Ø61.3 mm over length 42.0 mm (from Z=0.0 to Z=123.3).\n9. Finish turn diameter Ø45.3 mm over length 51.4 mm (from Z=0.0 to Z=81.3).\n10. Finish turn diameter Ø30.0 mm over length 29.9 mm (from Z=0.0 to Z=29.9).\n11. Break all edges (e.g., 2×45° where applicable).\n12. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00334", "image": "images/Shaft_00334.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 16MnCr5) with diameter at least Ø35.3 mm and length at least 150.6 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø33.3 mm over length 40.1 mm (from Z=0.0 to Z=40.1).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø33.3 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø30.0 mm over length 105.5 mm (from Z=0.0 to Z=105.5).\n10. Break all edges (e.g., 2×45° where applicable).\n11. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00016", "image": "images/Shaft_00016.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material C45) with diameter at least Ø41.3 mm and length at least 197.6 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø39.3 mm over length 48.0 mm (from Z=0.0 to Z=48.0).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø39.3 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø30.0 mm over length 144.6 mm (from Z=0.0 to Z=144.6).\n10. Break all edges (e.g., 2×45° where applicable).\n11. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00202", "image": "images/Shaft_00202.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material C45) with diameter at least Ø61.2 mm and length at least 126.8 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø59.2 mm over length 42.0 mm (from Z=0.0 to Z=42.0).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø59.2 mm.\n6. Face the end and set Z=0.\n7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n8. Finish turn diameter Ø48.5 mm over length 24.5 mm (from Z=0.0 to Z=79.8).\n9. Finish turn diameter Ø33.5 mm over length 55.3 mm (from Z=0.0 to Z=55.3).\n10. Break all edges (e.g., 2×45° where applicable).\n11. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00001", "image": "images/Shaft_00001.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a stainless steel round bar (material 1.4301) with diameter at least Ø65.6 mm and length at least 129.2 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø63.6 mm over length 40.4 mm (from Z=0.0 to Z=40.4).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø63.6 mm.\n6. Face the end and set Z=0.\n7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n8. Finish turn diameter Ø48.5 mm over length 48.4 mm (from Z=0.0 to Z=83.8).\n9. Finish turn diameter Ø30.0 mm over length 35.4 mm (from Z=0.0 to Z=35.4).\n10. Break all edges (e.g., 2×45° where applicable).\n11. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00038", "image": "images/Shaft_00038.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a aluminium alloy round bar (material EN AW-6082) with diameter at least Ø38.1 mm and length at least 281.4 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø36.1 mm over length 85.8 mm (from Z=0.0 to Z=85.8).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø36.1 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø30.8 mm over length 59.4 mm (from Z=0.0 to Z=190.6).\n10. Finish turn diameter Ø30.0 mm over length 131.2 mm (from Z=0.0 to Z=131.2).\n11. Break all edges (e.g., 2×45° where applicable).\n12. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00290", "image": "images/Shaft_00290.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 42CrMo4) with diameter at least Ø58.6 mm and length at least 212.3 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø56.6 mm over length 51.0 mm (from Z=0.0 to Z=51.0).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø56.6 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø46.3 mm over length 128.1 mm (from Z=0.0 to Z=156.3).\n10. Finish turn diameter Ø43.0 mm over length 28.2 mm (from Z=0.0 to Z=28.2).\n11. Break all edges (e.g., 2×45° where applicable).\n12. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00493", "image": "images/Shaft_00493.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a stainless steel round bar (material 1.4301) with diameter at least Ø64.3 mm and length at least 110.1 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø62.3 mm over length 8.0 mm (from Z=0.0 to Z=8.0).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø62.3 mm.\n6. Face the end and set Z=0.\n7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n8. Finish turn diameter Ø48.2 mm over length 14.8 mm (from Z=0.0 to Z=97.1).\n9. Finish turn diameter Ø36.5 mm over length 21.7 mm (from Z=0.0 to Z=82.3).\n10. Finish turn diameter Ø30.0 mm over length 60.6 mm (from Z=0.0 to Z=60.6).\n11. Break all edges (e.g., 2×45° where applicable).\n12. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00247", "image": "images/Shaft_00247.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material C45) with diameter at least Ø67.4 mm and length at least 80.5 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø65.4 mm over length 7.5 mm (from Z=0.0 to Z=7.5).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø65.4 mm.\n6. Face the end and set Z=0.\n7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n8. Finish turn diameter Ø58.4 mm over length 22.9 mm (from Z=0.0 to Z=68.0).\n9. Finish turn diameter Ø39.5 mm over length 31.2 mm (from Z=0.0 to Z=45.1).\n10. Finish turn diameter Ø30.0 mm over length 13.9 mm (from Z=0.0 to Z=13.9).\n11. Break all edges (e.g., 2×45° where applicable).\n12. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00506", "image": "images/Shaft_00506.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a stainless steel round bar (material 1.4301) with diameter at least Ø63.5 mm and length at least 223.8 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø61.5 mm over length 8.2 mm (from Z=0.0 to Z=8.2).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø61.5 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø43.9 mm over length 29.1 mm (from Z=0.0 to Z=210.6).\n10. Finish turn diameter Ø36.6 mm over length 15.2 mm (from Z=0.0 to Z=181.5).\n11. Finish turn diameter Ø30.9 mm over length 73.2 mm (from Z=0.0 to Z=166.3).\n12. Finish turn diameter Ø30.0 mm over length 93.1 mm (from Z=0.0 to Z=93.1).\n13. Break all edges (e.g., 2×45° where applicable).\n14. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00896", "image": "images/Shaft_00896.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a stainless steel round bar (material 1.4301) with diameter at least Ø81.5 mm and length at least 227.5 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø79.5 mm over length 88.4 mm (from Z=0.0 to Z=88.4).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø79.5 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø70.9 mm over length 86.7 mm (from Z=0.0 to Z=134.1).\n10. Finish turn diameter Ø57.9 mm over length 35.6 mm (from Z=0.0 to Z=47.4).\n11. Finish turn diameter Ø46.2 mm over length 11.8 mm (from Z=0.0 to Z=11.8).\n12. Break all edges (e.g., 2×45° where applicable).\n13. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00713", "image": "images/Shaft_00713.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 42CrMo4) with diameter at least Ø53.0 mm and length at least 103.5 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø51.0 mm over length 20.3 mm (from Z=0.0 to Z=20.3).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø51.0 mm.\n6. Face the end and set Z=0.\n7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n8. Finish turn diameter Ø41.8 mm over length 25.2 mm (from Z=0.0 to Z=78.2).\n9. Finish turn diameter Ø30.4 mm over length 12.0 mm (from Z=0.0 to Z=53.0).\n10. Finish turn diameter Ø30.0 mm over length 41.0 mm (from Z=0.0 to Z=41.0).\n11. Break all edges (e.g., 2×45° where applicable).\n12. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00891", "image": "images/Shaft_00891.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 42CrMo4) with diameter at least Ø69.6 mm and length at least 171.1 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø67.6 mm over length 25.9 mm (from Z=0.0 to Z=25.9).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø67.6 mm.\n6. Face the end and set Z=0.\n7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n8. Finish turn diameter Ø63.0 mm over length 29.9 mm (from Z=0.0 to Z=140.2).\n9. Finish turn diameter Ø43.7 mm over length 41.8 mm (from Z=0.0 to Z=110.3).\n10. Finish turn diameter Ø30.0 mm over length 68.5 mm (from Z=0.0 to Z=68.5).\n11. Break all edges (e.g., 2×45° where applicable).\n12. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00076", "image": "images/Shaft_00076.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 42CrMo4) with diameter at least Ø32.0 mm and length at least 154.5 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø30.0 mm over length 85.4 mm (from Z=0.0 to Z=85.4).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø30.0 mm.\n6. Face the end and set Z=0.\n7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n8. Finish turn diameter Ø22.0 mm over length 64.1 mm (from Z=0.0 to Z=64.1).\n9. Break all edges (e.g., 2×45° where applicable).\n10. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00911", "image": "images/Shaft_00911.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a stainless steel round bar (material 1.4301) with diameter at least Ø76.5 mm and length at least 151.6 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø74.5 mm over length 24.4 mm (from Z=0.0 to Z=24.4).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø74.5 mm.\n6. Face the end and set Z=0.\n7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n8. Finish turn diameter Ø64.6 mm over length 34.8 mm (from Z=0.0 to Z=122.2).\n9. Finish turn diameter Ø56.8 mm over length 33.2 mm (from Z=0.0 to Z=87.4).\n10. Finish turn diameter Ø39.9 mm over length 47.3 mm (from Z=0.0 to Z=54.2).\n11. Finish turn diameter Ø33.2 mm over length 6.9 mm (from Z=0.0 to Z=6.9).\n12. Break all edges (e.g., 2×45° where applicable).\n13. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00792", "image": "images/Shaft_00792.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 16MnCr5) with diameter at least Ø46.9 mm and length at least 212.3 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø44.9 mm over length 18.0 mm (from Z=0.0 to Z=18.0).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø44.9 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø36.8 mm over length 55.0 mm (from Z=0.0 to Z=189.3).\n10. Finish turn diameter Ø30.0 mm over length 134.3 mm (from Z=0.0 to Z=134.3).\n11. Break all edges (e.g., 2×45° where applicable).\n12. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00508", "image": "images/Shaft_00508.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 16MnCr5) with diameter at least Ø73.7 mm and length at least 250.3 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø71.7 mm over length 22.6 mm (from Z=0.0 to Z=22.6).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø71.7 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø54.7 mm over length 98.9 mm (from Z=0.0 to Z=222.7).\n10. Finish turn diameter Ø40.7 mm over length 123.8 mm (from Z=0.0 to Z=123.8).\n11. Break all edges (e.g., 2×45° where applicable).\n12. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00177", "image": "images/Shaft_00177.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a aluminium alloy round bar (material EN AW-6082) with diameter at least Ø44.4 mm and length at least 122.8 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø42.4 mm over length 26.7 mm (from Z=0.0 to Z=26.7).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø42.4 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø30.0 mm over length 91.1 mm (from Z=0.0 to Z=91.1).\n10. Break all edges (e.g., 2×45° where applicable).\n11. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00842", "image": "images/Shaft_00842.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 42CrMo4) with diameter at least Ø56.2 mm and length at least 90.9 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø54.2 mm over length 30.3 mm (from Z=0.0 to Z=30.3).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø54.2 mm.\n6. Face the end and set Z=0.\n7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n8. Finish turn diameter Ø44.9 mm over length 11.3 mm (from Z=0.0 to Z=55.6).\n9. Finish turn diameter Ø32.7 mm over length 23.5 mm (from Z=0.0 to Z=44.3).\n10. Finish turn diameter Ø30.0 mm over length 20.8 mm (from Z=0.0 to Z=20.8).\n11. Break all edges (e.g., 2×45° where applicable).\n12. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00200", "image": "images/Shaft_00200.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a aluminium alloy round bar (material EN AW-6082) with diameter at least Ø32.4 mm and length at least 302.3 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø30.4 mm over length 82.9 mm (from Z=0.0 to Z=82.9).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø30.4 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø30.0 mm over length 214.4 mm (from Z=0.0 to Z=214.4).\n10. Break all edges (e.g., 2×45° where applicable).\n11. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00765", "image": "images/Shaft_00765.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a stainless steel round bar (material 1.4301) with diameter at least Ø33.4 mm and length at least 237.7 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø31.4 mm over length 58.7 mm (from Z=0.0 to Z=58.7).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø31.4 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø30.0 mm over length 174.0 mm (from Z=0.0 to Z=174.0).\n10. Break all edges (e.g., 2×45° where applicable).\n11. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00909", "image": "images/Shaft_00909.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 16MnCr5) with diameter at least Ø75.6 mm and length at least 314.6 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø73.6 mm over length 74.7 mm (from Z=0.0 to Z=74.7).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø73.6 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø66.2 mm over length 113.6 mm (from Z=0.0 to Z=234.9).\n10. Finish turn diameter Ø58.1 mm over length 121.3 mm (from Z=0.0 to Z=121.3).\n11. Break all edges (e.g., 2×45° where applicable).\n12. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00293", "image": "images/Shaft_00293.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a aluminium alloy round bar (material EN AW-6082) with diameter at least Ø73.0 mm and length at least 239.8 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø71.0 mm over length 54.2 mm (from Z=0.0 to Z=54.2).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø71.0 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø60.4 mm over length 47.3 mm (from Z=0.0 to Z=180.6).\n10. Finish turn diameter Ø50.6 mm over length 19.8 mm (from Z=0.0 to Z=133.3).\n11. Finish turn diameter Ø40.8 mm over length 38.4 mm (from Z=0.0 to Z=113.5).\n12. Finish turn diameter Ø35.5 mm over length 27.0 mm (from Z=0.0 to Z=75.1).\n13. Finish turn diameter Ø30.0 mm over length 48.1 mm (from Z=0.0 to Z=48.1).\n14. Break all edges (e.g., 2×45° where applicable).\n15. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00538", "image": "images/Shaft_00538.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a aluminium alloy round bar (material EN AW-6082) with diameter at least Ø81.4 mm and length at least 262.3 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø79.4 mm over length 13.5 mm (from Z=0.0 to Z=13.5).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø79.4 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø59.7 mm over length 42.6 mm (from Z=0.0 to Z=243.8).\n10. Finish turn diameter Ø53.9 mm over length 138.8 mm (from Z=0.0 to Z=201.2).\n11. Finish turn diameter Ø38.2 mm over length 62.4 mm (from Z=0.0 to Z=62.4).\n12. Break all edges (e.g., 2×45° where applicable).\n13. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00024", "image": "images/Shaft_00024.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material C45) with diameter at least Ø32.0 mm and length at least 229.9 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø30.0 mm over length 136.8 mm (from Z=0.0 to Z=136.8).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø30.0 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø20.2 mm over length 88.1 mm (from Z=0.0 to Z=88.1).\n10. Break all edges (e.g., 2×45° where applicable).\n11. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00694", "image": "images/Shaft_00694.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a aluminium alloy round bar (material EN AW-6082) with diameter at least Ø61.0 mm and length at least 203.7 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø59.0 mm over length 59.6 mm (from Z=0.0 to Z=59.6).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø59.0 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø47.6 mm over length 87.3 mm (from Z=0.0 to Z=139.1).\n10. Finish turn diameter Ø43.2 mm over length 51.8 mm (from Z=0.0 to Z=51.8).\n11. Break all edges (e.g., 2×45° where applicable).\n12. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00210", "image": "images/Shaft_00210.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material C45) with diameter at least Ø69.8 mm and length at least 96.1 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø67.8 mm over length 12.6 mm (from Z=0.0 to Z=12.6).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø67.8 mm.\n6. Face the end and set Z=0.\n7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n8. Finish turn diameter Ø62.1 mm over length 7.8 mm (from Z=0.0 to Z=78.5).\n9. Finish turn diameter Ø42.1 mm over length 26.4 mm (from Z=0.0 to Z=70.7).\n10. Finish turn diameter Ø32.5 mm over length 20.2 mm (from Z=0.0 to Z=44.3).\n11. Finish turn diameter Ø30.0 mm over length 24.1 mm (from Z=0.0 to Z=24.1).\n12. Break all edges (e.g., 2×45° where applicable).\n13. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00424", "image": "images/Shaft_00424.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a aluminium alloy round bar (material EN AW-6082) with diameter at least Ø52.6 mm and length at least 257.1 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø50.6 mm over length 23.5 mm (from Z=0.0 to Z=23.5).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø50.6 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø36.9 mm over length 14.7 mm (from Z=0.0 to Z=228.6).\n10. Finish turn diameter Ø30.0 mm over length 213.9 mm (from Z=0.0 to Z=213.9).\n11. Break all edges (e.g., 2×45° where applicable).\n12. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00528", "image": "images/Shaft_00528.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a aluminium alloy round bar (material EN AW-6082) with diameter at least Ø72.8 mm and length at least 262.4 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø70.8 mm over length 9.6 mm (from Z=0.0 to Z=9.6).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø70.8 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø60.7 mm over length 46.6 mm (from Z=0.0 to Z=247.8).\n10. Finish turn diameter Ø43.7 mm over length 97.3 mm (from Z=0.0 to Z=201.2).\n11. Finish turn diameter Ø30.0 mm over length 103.9 mm (from Z=0.0 to Z=103.9).\n12. Break all edges (e.g., 2×45° where applicable).\n13. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00034", "image": "images/Shaft_00034.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a stainless steel round bar (material 1.4301) with diameter at least Ø70.5 mm and length at least 225.1 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø68.5 mm over length 14.8 mm (from Z=0.0 to Z=14.8).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø68.5 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø59.7 mm over length 62.1 mm (from Z=0.0 to Z=205.3).\n10. Finish turn diameter Ø56.0 mm over length 63.7 mm (from Z=0.0 to Z=143.2).\n11. Finish turn diameter Ø36.0 mm over length 33.5 mm (from Z=0.0 to Z=79.5).\n12. Finish turn diameter Ø32.0 mm over length 46.0 mm (from Z=0.0 to Z=46.0).\n13. Break all edges (e.g., 2×45° where applicable).\n14. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00928", "image": "images/Shaft_00928.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 16MnCr5) with diameter at least Ø70.8 mm and length at least 267.0 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø68.8 mm over length 49.0 mm (from Z=0.0 to Z=49.0).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø68.8 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø54.3 mm over length 38.6 mm (from Z=0.0 to Z=213.0).\n10. Finish turn diameter Ø34.9 mm over length 74.7 mm (from Z=0.0 to Z=174.4).\n11. Finish turn diameter Ø30.0 mm over length 99.7 mm (from Z=0.0 to Z=99.7).\n12. Break all edges (e.g., 2×45° where applicable).\n13. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00398", "image": "images/Shaft_00398.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a aluminium alloy round bar (material EN AW-6082) with diameter at least Ø81.5 mm and length at least 188.6 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø79.5 mm over length 12.8 mm (from Z=0.0 to Z=12.8).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø79.5 mm.\n6. Face the end and set Z=0.\n7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n8. Finish turn diameter Ø73.7 mm over length 31.2 mm (from Z=0.0 to Z=170.8).\n9. Finish turn diameter Ø66.3 mm over length 31.4 mm (from Z=0.0 to Z=139.6).\n10. Finish turn diameter Ø62.7 mm over length 108.2 mm (from Z=0.0 to Z=108.2).\n11. Break all edges (e.g., 2×45° where applicable).\n12. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00607", "image": "images/Shaft_00607.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material C45) with diameter at least Ø69.0 mm and length at least 260.1 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø67.0 mm over length 53.0 mm (from Z=0.0 to Z=53.0).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø67.0 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø50.5 mm over length 56.5 mm (from Z=0.0 to Z=202.1).\n10. Finish turn diameter Ø47.4 mm over length 68.5 mm (from Z=0.0 to Z=145.6).\n11. Finish turn diameter Ø30.0 mm over length 77.1 mm (from Z=0.0 to Z=77.1).\n12. Break all edges (e.g., 2×45° where applicable).\n13. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00298", "image": "images/Shaft_00298.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a aluminium alloy round bar (material EN AW-6082) with diameter at least Ø55.8 mm and length at least 208.6 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø53.8 mm over length 30.2 mm (from Z=0.0 to Z=30.2).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø53.8 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø37.7 mm over length 14.1 mm (from Z=0.0 to Z=173.4).\n10. Finish turn diameter Ø30.0 mm over length 159.3 mm (from Z=0.0 to Z=159.3).\n11. Break all edges (e.g., 2×45° where applicable).\n12. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00848", "image": "images/Shaft_00848.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a stainless steel round bar (material 1.4301) with diameter at least Ø77.5 mm and length at least 255.6 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø75.5 mm over length 30.8 mm (from Z=0.0 to Z=30.8).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø75.5 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø56.4 mm over length 43.9 mm (from Z=0.0 to Z=219.8).\n10. Finish turn diameter Ø52.6 mm over length 59.2 mm (from Z=0.0 to Z=175.9).\n11. Finish turn diameter Ø42.8 mm over length 60.7 mm (from Z=0.0 to Z=116.7).\n12. Finish turn diameter Ø30.0 mm over length 56.0 mm (from Z=0.0 to Z=56.0).\n13. Break all edges (e.g., 2×45° where applicable).\n14. Remove the workpiece from the lathe."}]}

annotations/val.jsonl

@@ -0,0 +1,50 @@
+{"id": "Shaft_00776", "image": "images/Shaft_00776.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 42CrMo4) with diameter at least Ø46.7 mm and length at least 118.3 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø44.7 mm over length 29.4 mm (from Z=0.0 to Z=29.4).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø44.7 mm.\n6. Face the end and set Z=0.\n7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n8. Finish turn diameter Ø30.0 mm over length 83.9 mm (from Z=0.0 to Z=83.9).\n9. Break all edges (e.g., 2×45° where applicable).\n10. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00507", "image": "images/Shaft_00507.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 42CrMo4) with diameter at least Ø47.0 mm and length at least 100.7 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø45.0 mm over length 9.1 mm (from Z=0.0 to Z=9.1).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø45.0 mm.\n6. Face the end and set Z=0.\n7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n8. Finish turn diameter Ø37.9 mm over length 57.1 mm (from Z=0.0 to Z=86.6).\n9. Finish turn diameter Ø32.9 mm over length 29.5 mm (from Z=0.0 to Z=29.5).\n10. Break all edges (e.g., 2×45° where applicable).\n11. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00895", "image": "images/Shaft_00895.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 16MnCr5) with diameter at least Ø59.7 mm and length at least 313.1 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø57.7 mm over length 214.0 mm (from Z=0.0 to Z=214.0).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø57.7 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø49.8 mm over length 63.0 mm (from Z=0.0 to Z=94.1).\n10. Finish turn diameter Ø46.2 mm over length 31.1 mm (from Z=0.0 to Z=31.1).\n11. Break all edges (e.g., 2×45° where applicable).\n12. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00922", "image": "images/Shaft_00922.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 42CrMo4) with diameter at least Ø71.1 mm and length at least 213.2 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø69.1 mm over length 32.0 mm (from Z=0.0 to Z=32.0).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø69.1 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø57.1 mm over length 28.1 mm (from Z=0.0 to Z=176.2).\n10. Finish turn diameter Ø39.2 mm over length 39.6 mm (from Z=0.0 to Z=148.1).\n11. Finish turn diameter Ø35.1 mm over length 37.9 mm (from Z=0.0 to Z=108.5).\n12. Finish turn diameter Ø31.5 mm over length 34.1 mm (from Z=0.0 to Z=70.6).\n13. Finish turn diameter Ø30.0 mm over length 36.5 mm (from Z=0.0 to Z=36.5).\n14. Break all edges (e.g., 2×45° where applicable).\n15. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00033", "image": "images/Shaft_00033.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material C45) with diameter at least Ø52.0 mm and length at least 124.4 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø50.0 mm over length 27.6 mm (from Z=0.0 to Z=27.6).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø50.0 mm.\n6. Face the end and set Z=0.\n7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n8. Finish turn diameter Ø39.9 mm over length 38.3 mm (from Z=0.0 to Z=91.8).\n9. Finish turn diameter Ø36.0 mm over length 53.5 mm (from Z=0.0 to Z=53.5).\n10. Break all edges (e.g., 2×45° where applicable).\n11. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00483", "image": "images/Shaft_00483.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material C45) with diameter at least Ø71.8 mm and length at least 218.4 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø69.8 mm over length 28.9 mm (from Z=0.0 to Z=28.9).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø69.8 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø52.2 mm over length 52.8 mm (from Z=0.0 to Z=184.5).\n10. Finish turn diameter Ø47.5 mm over length 25.2 mm (from Z=0.0 to Z=131.7).\n11. Finish turn diameter Ø43.1 mm over length 20.4 mm (from Z=0.0 to Z=106.5).\n12. Finish turn diameter Ø36.7 mm over length 36.8 mm (from Z=0.0 to Z=86.1).\n13. Finish turn diameter Ø30.0 mm over length 49.3 mm (from Z=0.0 to Z=49.3).\n14. Break all edges (e.g., 2×45° where applicable).\n15. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00085", "image": "images/Shaft_00085.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 16MnCr5) with diameter at least Ø57.1 mm and length at least 277.4 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø55.1 mm over length 66.1 mm (from Z=0.0 to Z=66.1).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø55.1 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø48.5 mm over length 13.3 mm (from Z=0.0 to Z=206.3).\n10. Finish turn diameter Ø44.0 mm over length 50.5 mm (from Z=0.0 to Z=193.0).\n11. Finish turn diameter Ø30.8 mm over length 105.5 mm (from Z=0.0 to Z=142.5).\n12. Finish turn diameter Ø30.0 mm over length 37.0 mm (from Z=0.0 to Z=37.0).\n13. Break all edges (e.g., 2×45° where applicable).\n14. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00750", "image": "images/Shaft_00750.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 42CrMo4) with diameter at least Ø65.7 mm and length at least 198.8 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø63.7 mm over length 145.2 mm (from Z=0.0 to Z=145.2).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø63.7 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø52.6 mm over length 28.9 mm (from Z=0.0 to Z=48.6).\n10. Finish turn diameter Ø46.8 mm over length 19.7 mm (from Z=0.0 to Z=19.7).\n11. Break all edges (e.g., 2×45° where applicable).\n12. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00354", "image": "images/Shaft_00354.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a stainless steel round bar (material 1.4301) with diameter at least Ø41.3 mm and length at least 299.1 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø39.3 mm over length 127.1 mm (from Z=0.0 to Z=127.1).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø39.3 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø30.0 mm over length 167.0 mm (from Z=0.0 to Z=167.0).\n10. Break all edges (e.g., 2×45° where applicable).\n11. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00523", "image": "images/Shaft_00523.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material C45) with diameter at least Ø60.3 mm and length at least 162.9 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø58.3 mm over length 39.3 mm (from Z=0.0 to Z=39.3).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø58.3 mm.\n6. Face the end and set Z=0.\n7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n8. Finish turn diameter Ø50.6 mm over length 35.4 mm (from Z=0.0 to Z=118.6).\n9. Finish turn diameter Ø33.8 mm over length 48.1 mm (from Z=0.0 to Z=83.2).\n10. Finish turn diameter Ø30.0 mm over length 35.1 mm (from Z=0.0 to Z=35.1).\n11. Break all edges (e.g., 2×45° where applicable).\n12. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00184", "image": "images/Shaft_00184.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a aluminium alloy round bar (material EN AW-6082) with diameter at least Ø56.1 mm and length at least 95.5 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø54.1 mm over length 32.9 mm (from Z=0.0 to Z=32.9).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø54.1 mm.\n6. Face the end and set Z=0.\n7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n8. Finish turn diameter Ø41.8 mm over length 16.5 mm (from Z=0.0 to Z=57.6).\n9. Finish turn diameter Ø37.7 mm over length 41.1 mm (from Z=0.0 to Z=41.1).\n10. Break all edges (e.g., 2×45° where applicable).\n11. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00809", "image": "images/Shaft_00809.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 42CrMo4) with diameter at least Ø46.5 mm and length at least 181.6 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø44.5 mm over length 103.8 mm (from Z=0.0 to Z=103.8).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø44.5 mm.\n6. Face the end and set Z=0.\n7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n8. Finish turn diameter Ø37.3 mm over length 47.9 mm (from Z=0.0 to Z=72.8).\n9. Finish turn diameter Ø30.0 mm over length 24.9 mm (from Z=0.0 to Z=24.9).\n10. Break all edges (e.g., 2×45° where applicable).\n11. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00418", "image": "images/Shaft_00418.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a stainless steel round bar (material 1.4301) with diameter at least Ø55.7 mm and length at least 108.2 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø53.7 mm over length 26.0 mm (from Z=0.0 to Z=26.0).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø53.7 mm.\n6. Face the end and set Z=0.\n7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n8. Finish turn diameter Ø37.1 mm over length 30.4 mm (from Z=0.0 to Z=77.2).\n9. Finish turn diameter Ø30.0 mm over length 46.8 mm (from Z=0.0 to Z=46.8).\n10. Break all edges (e.g., 2×45° where applicable).\n11. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00615", "image": "images/Shaft_00615.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a aluminium alloy round bar (material EN AW-6082) with diameter at least Ø63.2 mm and length at least 294.2 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø61.2 mm over length 13.1 mm (from Z=0.0 to Z=13.1).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø61.2 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø48.7 mm over length 46.1 mm (from Z=0.0 to Z=276.1).\n10. Finish turn diameter Ø36.8 mm over length 14.6 mm (from Z=0.0 to Z=230.0).\n11. Finish turn diameter Ø30.0 mm over length 215.4 mm (from Z=0.0 to Z=215.4).\n12. Break all edges (e.g., 2×45° where applicable).\n13. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00682", "image": "images/Shaft_00682.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 42CrMo4) with diameter at least Ø34.6 mm and length at least 276.3 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø32.6 mm over length 77.0 mm (from Z=0.0 to Z=77.0).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø32.6 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø30.0 mm over length 194.3 mm (from Z=0.0 to Z=194.3).\n10. Break all edges (e.g., 2×45° where applicable).\n11. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00501", "image": "images/Shaft_00501.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material C45) with diameter at least Ø43.8 mm and length at least 135.8 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø41.8 mm over length 12.2 mm (from Z=0.0 to Z=12.2).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø41.8 mm.\n6. Face the end and set Z=0.\n7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n8. Finish turn diameter Ø35.8 mm over length 45.2 mm (from Z=0.0 to Z=118.6).\n9. Finish turn diameter Ø30.0 mm over length 73.4 mm (from Z=0.0 to Z=73.4).\n10. Break all edges (e.g., 2×45° where applicable).\n11. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00760", "image": "images/Shaft_00760.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 42CrMo4) with diameter at least Ø33.5 mm and length at least 182.7 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø31.5 mm over length 51.0 mm (from Z=0.0 to Z=51.0).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø31.5 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø30.0 mm over length 126.7 mm (from Z=0.0 to Z=126.7).\n10. Break all edges (e.g., 2×45° where applicable).\n11. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00049", "image": "images/Shaft_00049.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 42CrMo4) with diameter at least Ø33.1 mm and length at least 239.4 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø31.1 mm over length 15.0 mm (from Z=0.0 to Z=15.0).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø31.1 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø30.0 mm over length 219.4 mm (from Z=0.0 to Z=219.4).\n10. Break all edges (e.g., 2×45° where applicable).\n11. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00732", "image": "images/Shaft_00732.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a aluminium alloy round bar (material EN AW-6082) with diameter at least Ø46.3 mm and length at least 172.4 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø44.3 mm over length 48.2 mm (from Z=0.0 to Z=48.2).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø44.3 mm.\n6. Face the end and set Z=0.\n7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n8. Finish turn diameter Ø39.6 mm over length 39.3 mm (from Z=0.0 to Z=119.2).\n9. Finish turn diameter Ø34.7 mm over length 64.6 mm (from Z=0.0 to Z=79.9).\n10. Finish turn diameter Ø30.0 mm over length 15.3 mm (from Z=0.0 to Z=15.3).\n11. Break all edges (e.g., 2×45° where applicable).\n12. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00336", "image": "images/Shaft_00336.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material C45) with diameter at least Ø46.3 mm and length at least 68.6 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø44.3 mm over length 13.4 mm (from Z=0.0 to Z=13.4).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø44.3 mm.\n6. Face the end and set Z=0.\n7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n8. Finish turn diameter Ø37.0 mm over length 8.7 mm (from Z=0.0 to Z=50.2).\n9. Finish turn diameter Ø30.0 mm over length 41.5 mm (from Z=0.0 to Z=41.5).\n10. Break all edges (e.g., 2×45° where applicable).\n11. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00450", "image": "images/Shaft_00450.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 42CrMo4) with diameter at least Ø54.0 mm and length at least 120.5 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø52.0 mm over length 30.6 mm (from Z=0.0 to Z=30.6).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø52.0 mm.\n6. Face the end and set Z=0.\n7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n8. Finish turn diameter Ø35.0 mm over length 22.6 mm (from Z=0.0 to Z=84.9).\n9. Finish turn diameter Ø30.0 mm over length 62.3 mm (from Z=0.0 to Z=62.3).\n10. Break all edges (e.g., 2×45° where applicable).\n11. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00790", "image": "images/Shaft_00790.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a aluminium alloy round bar (material EN AW-6082) with diameter at least Ø32.0 mm and length at least 260.0 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø30.0 mm over length 190.5 mm (from Z=0.0 to Z=190.5).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø30.0 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø27.5 mm over length 64.5 mm (from Z=0.0 to Z=64.5).\n10. Break all edges (e.g., 2×45° where applicable).\n11. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00350", "image": "images/Shaft_00350.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 16MnCr5) with diameter at least Ø47.3 mm and length at least 288.1 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø45.3 mm over length 123.2 mm (from Z=0.0 to Z=123.2).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø45.3 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø38.3 mm over length 84.2 mm (from Z=0.0 to Z=159.9).\n10. Finish turn diameter Ø30.0 mm over length 75.7 mm (from Z=0.0 to Z=75.7).\n11. Break all edges (e.g., 2×45° where applicable).\n12. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00467", "image": "images/Shaft_00467.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 16MnCr5) with diameter at least Ø79.2 mm and length at least 243.4 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø77.2 mm over length 38.1 mm (from Z=0.0 to Z=38.1).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø77.2 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø60.5 mm over length 44.9 mm (from Z=0.0 to Z=200.3).\n10. Finish turn diameter Ø54.4 mm over length 35.4 mm (from Z=0.0 to Z=155.4).\n11. Finish turn diameter Ø38.4 mm over length 48.6 mm (from Z=0.0 to Z=120.0).\n12. Finish turn diameter Ø30.0 mm over length 71.4 mm (from Z=0.0 to Z=71.4).\n13. Break all edges (e.g., 2×45° where applicable).\n14. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00622", "image": "images/Shaft_00622.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 16MnCr5) with diameter at least Ø59.3 mm and length at least 307.4 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø57.3 mm over length 51.9 mm (from Z=0.0 to Z=51.9).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø57.3 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø47.0 mm over length 101.8 mm (from Z=0.0 to Z=250.5).\n10. Finish turn diameter Ø41.8 mm over length 66.6 mm (from Z=0.0 to Z=148.7).\n11. Finish turn diameter Ø30.0 mm over length 82.1 mm (from Z=0.0 to Z=82.1).\n12. Break all edges (e.g., 2×45° where applicable).\n13. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00476", "image": "images/Shaft_00476.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a aluminium alloy round bar (material EN AW-6082) with diameter at least Ø79.4 mm and length at least 227.0 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø77.4 mm over length 69.5 mm (from Z=0.0 to Z=69.5).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø77.4 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø57.6 mm over length 58.7 mm (from Z=0.0 to Z=152.5).\n10. Finish turn diameter Ø46.8 mm over length 15.2 mm (from Z=0.0 to Z=93.8).\n11. Finish turn diameter Ø30.0 mm over length 78.6 mm (from Z=0.0 to Z=78.6).\n12. Break all edges (e.g., 2×45° where applicable).\n13. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00614", "image": "images/Shaft_00614.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 42CrMo4) with diameter at least Ø62.4 mm and length at least 107.1 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø60.4 mm over length 38.4 mm (from Z=0.0 to Z=38.4).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø60.4 mm.\n6. Face the end and set Z=0.\n7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n8. Finish turn diameter Ø49.5 mm over length 9.2 mm (from Z=0.0 to Z=63.7).\n9. Finish turn diameter Ø38.9 mm over length 14.8 mm (from Z=0.0 to Z=54.5).\n10. Finish turn diameter Ø30.0 mm over length 39.7 mm (from Z=0.0 to Z=39.7).\n11. Break all edges (e.g., 2×45° where applicable).\n12. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00554", "image": "images/Shaft_00554.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 16MnCr5) with diameter at least Ø50.4 mm and length at least 215.7 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø48.4 mm over length 33.8 mm (from Z=0.0 to Z=33.8).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø48.4 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø44.2 mm over length 14.4 mm (from Z=0.0 to Z=176.9).\n10. Finish turn diameter Ø37.0 mm over length 75.0 mm (from Z=0.0 to Z=162.5).\n11. Finish turn diameter Ø30.9 mm over length 87.5 mm (from Z=0.0 to Z=87.5).\n12. Break all edges (e.g., 2×45° where applicable).\n13. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00365", "image": "images/Shaft_00365.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 42CrMo4) with diameter at least Ø47.3 mm and length at least 304.7 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø45.3 mm over length 80.2 mm (from Z=0.0 to Z=80.2).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø45.3 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø39.1 mm over length 104.7 mm (from Z=0.0 to Z=219.5).\n10. Finish turn diameter Ø34.6 mm over length 114.8 mm (from Z=0.0 to Z=114.8).\n11. Break all edges (e.g., 2×45° where applicable).\n12. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00770", "image": "images/Shaft_00770.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 42CrMo4) with diameter at least Ø70.0 mm and length at least 291.8 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø68.0 mm over length 45.5 mm (from Z=0.0 to Z=45.5).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø68.0 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø60.2 mm over length 78.4 mm (from Z=0.0 to Z=241.3).\n10. Finish turn diameter Ø49.5 mm over length 131.3 mm (from Z=0.0 to Z=162.9).\n11. Finish turn diameter Ø30.8 mm over length 31.6 mm (from Z=0.0 to Z=31.6).\n12. Break all edges (e.g., 2×45° where applicable).\n13. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00630", "image": "images/Shaft_00630.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a stainless steel round bar (material 1.4301) with diameter at least Ø59.9 mm and length at least 231.1 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø57.9 mm over length 87.8 mm (from Z=0.0 to Z=87.8).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø57.9 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø45.7 mm over length 44.4 mm (from Z=0.0 to Z=138.3).\n10. Finish turn diameter Ø30.0 mm over length 93.9 mm (from Z=0.0 to Z=93.9).\n11. Break all edges (e.g., 2×45° where applicable).\n12. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00940", "image": "images/Shaft_00940.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a aluminium alloy round bar (material EN AW-6082) with diameter at least Ø32.0 mm and length at least 128.5 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø30.0 mm over length 102.5 mm (from Z=0.0 to Z=102.5).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø30.0 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø21.2 mm over length 21.0 mm (from Z=0.0 to Z=21.0).\n10. Break all edges (e.g., 2×45° where applicable).\n11. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00797", "image": "images/Shaft_00797.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 16MnCr5) with diameter at least Ø41.4 mm and length at least 307.2 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø39.4 mm over length 68.3 mm (from Z=0.0 to Z=68.3).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø39.4 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø32.7 mm over length 18.1 mm (from Z=0.0 to Z=233.9).\n10. Finish turn diameter Ø30.0 mm over length 215.8 mm (from Z=0.0 to Z=215.8).\n11. Break all edges (e.g., 2×45° where applicable).\n12. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00496", "image": "images/Shaft_00496.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 42CrMo4) with diameter at least Ø45.4 mm and length at least 236.6 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø43.4 mm over length 24.1 mm (from Z=0.0 to Z=24.1).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø43.4 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø30.0 mm over length 207.5 mm (from Z=0.0 to Z=207.5).\n10. Break all edges (e.g., 2×45° where applicable).\n11. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00924", "image": "images/Shaft_00924.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 42CrMo4) with diameter at least Ø32.0 mm and length at least 198.0 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø30.0 mm over length 141.6 mm (from Z=0.0 to Z=141.6).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø30.0 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø29.6 mm over length 51.4 mm (from Z=0.0 to Z=51.4).\n10. Break all edges (e.g., 2×45° where applicable).\n11. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00369", "image": "images/Shaft_00369.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a aluminium alloy round bar (material EN AW-6082) with diameter at least Ø56.1 mm and length at least 76.8 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø54.1 mm over length 18.3 mm (from Z=0.0 to Z=18.3).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø54.1 mm.\n6. Face the end and set Z=0.\n7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n8. Finish turn diameter Ø48.7 mm over length 22.2 mm (from Z=0.0 to Z=53.5).\n9. Finish turn diameter Ø42.2 mm over length 31.3 mm (from Z=0.0 to Z=31.3).\n10. Break all edges (e.g., 2×45° where applicable).\n11. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00596", "image": "images/Shaft_00596.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 42CrMo4) with diameter at least Ø81.5 mm and length at least 259.1 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø79.5 mm over length 10.4 mm (from Z=0.0 to Z=10.4).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø79.5 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø71.6 mm over length 57.2 mm (from Z=0.0 to Z=243.7).\n10. Finish turn diameter Ø61.1 mm over length 23.9 mm (from Z=0.0 to Z=186.5).\n11. Finish turn diameter Ø49.3 mm over length 80.7 mm (from Z=0.0 to Z=162.6).\n12. Finish turn diameter Ø37.2 mm over length 81.9 mm (from Z=0.0 to Z=81.9).\n13. Break all edges (e.g., 2×45° where applicable).\n14. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00720", "image": "images/Shaft_00720.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a aluminium alloy round bar (material EN AW-6082) with diameter at least Ø40.7 mm and length at least 259.5 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø38.7 mm over length 65.2 mm (from Z=0.0 to Z=65.2).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø38.7 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø32.6 mm over length 35.4 mm (from Z=0.0 to Z=189.3).\n10. Finish turn diameter Ø30.0 mm over length 153.9 mm (from Z=0.0 to Z=153.9).\n11. Break all edges (e.g., 2×45° where applicable).\n12. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00053", "image": "images/Shaft_00053.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a stainless steel round bar (material 1.4301) with diameter at least Ø80.7 mm and length at least 141.4 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø78.7 mm over length 23.9 mm (from Z=0.0 to Z=23.9).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø78.7 mm.\n6. Face the end and set Z=0.\n7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n8. Finish turn diameter Ø72.0 mm over length 60.3 mm (from Z=0.0 to Z=112.5).\n9. Finish turn diameter Ø53.6 mm over length 52.2 mm (from Z=0.0 to Z=52.2).\n10. Break all edges (e.g., 2×45° where applicable).\n11. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00426", "image": "images/Shaft_00426.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 42CrMo4) with diameter at least Ø65.8 mm and length at least 303.4 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø63.8 mm over length 36.6 mm (from Z=0.0 to Z=36.6).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø63.8 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø54.9 mm over length 43.5 mm (from Z=0.0 to Z=261.8).\n10. Finish turn diameter Ø38.8 mm over length 52.2 mm (from Z=0.0 to Z=218.3).\n11. Finish turn diameter Ø30.6 mm over length 45.7 mm (from Z=0.0 to Z=166.1).\n12. Finish turn diameter Ø30.0 mm over length 120.4 mm (from Z=0.0 to Z=120.4).\n13. Break all edges (e.g., 2×45° where applicable).\n14. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00056", "image": "images/Shaft_00056.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a stainless steel round bar (material 1.4301) with diameter at least Ø76.7 mm and length at least 150.3 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø74.7 mm over length 23.8 mm (from Z=0.0 to Z=23.8).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø74.7 mm.\n6. Face the end and set Z=0.\n7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n8. Finish turn diameter Ø68.1 mm over length 32.8 mm (from Z=0.0 to Z=121.5).\n9. Finish turn diameter Ø62.8 mm over length 88.7 mm (from Z=0.0 to Z=88.7).\n10. Break all edges (e.g., 2×45° where applicable).\n11. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00264", "image": "images/Shaft_00264.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a aluminium alloy round bar (material EN AW-6082) with diameter at least Ø56.5 mm and length at least 188.3 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø54.5 mm over length 127.8 mm (from Z=0.0 to Z=127.8).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø54.5 mm.\n6. Face the end and set Z=0.\n7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n8. Finish turn diameter Ø45.0 mm over length 39.0 mm (from Z=0.0 to Z=55.5).\n9. Finish turn diameter Ø30.2 mm over length 16.5 mm (from Z=0.0 to Z=16.5).\n10. Break all edges (e.g., 2×45° where applicable).\n11. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00772", "image": "images/Shaft_00772.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a aluminium alloy round bar (material EN AW-6082) with diameter at least Ø32.0 mm and length at least 317.3 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø30.0 mm over length 188.2 mm (from Z=0.0 to Z=188.2).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø30.0 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø19.8 mm over length 124.1 mm (from Z=0.0 to Z=124.1).\n10. Break all edges (e.g., 2×45° where applicable).\n11. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00185", "image": "images/Shaft_00185.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 42CrMo4) with diameter at least Ø48.3 mm and length at least 321.9 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø46.3 mm over length 105.3 mm (from Z=0.0 to Z=105.3).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø46.3 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø35.3 mm over length 90.7 mm (from Z=0.0 to Z=211.6).\n10. Finish turn diameter Ø30.0 mm over length 120.9 mm (from Z=0.0 to Z=120.9).\n11. Break all edges (e.g., 2×45° where applicable).\n12. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00466", "image": "images/Shaft_00466.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 42CrMo4) with diameter at least Ø37.3 mm and length at least 202.8 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø35.3 mm over length 29.2 mm (from Z=0.0 to Z=29.2).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø35.3 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø30.0 mm over length 168.6 mm (from Z=0.0 to Z=168.6).\n10. Break all edges (e.g., 2×45° where applicable).\n11. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00789", "image": "images/Shaft_00789.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material C45) with diameter at least Ø62.1 mm and length at least 299.3 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø60.1 mm over length 109.2 mm (from Z=0.0 to Z=109.2).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø60.1 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø51.5 mm over length 69.7 mm (from Z=0.0 to Z=185.1).\n10. Finish turn diameter Ø47.4 mm over length 68.5 mm (from Z=0.0 to Z=115.4).\n11. Finish turn diameter Ø35.5 mm over length 46.9 mm (from Z=0.0 to Z=46.9).\n12. Break all edges (e.g., 2×45° where applicable).\n13. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00174", "image": "images/Shaft_00174.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material 16MnCr5) with diameter at least Ø53.7 mm and length at least 207.9 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø51.7 mm over length 48.1 mm (from Z=0.0 to Z=48.1).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø51.7 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø43.7 mm over length 47.1 mm (from Z=0.0 to Z=154.8).\n10. Finish turn diameter Ø31.5 mm over length 12.9 mm (from Z=0.0 to Z=107.7).\n11. Finish turn diameter Ø30.0 mm over length 94.8 mm (from Z=0.0 to Z=94.8).\n12. Break all edges (e.g., 2×45° where applicable).\n13. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00150", "image": "images/Shaft_00150.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a steel round bar (material C45) with diameter at least Ø36.5 mm and length at least 281.1 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø34.5 mm over length 74.5 mm (from Z=0.0 to Z=74.5).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø34.5 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø30.0 mm over length 201.6 mm (from Z=0.0 to Z=201.6).\n10. Break all edges (e.g., 2×45° where applicable).\n11. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00741", "image": "images/Shaft_00741.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a stainless steel round bar (material 1.4301) with diameter at least Ø32.0 mm and length at least 239.1 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø30.0 mm over length 164.3 mm (from Z=0.0 to Z=164.3).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø30.0 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø22.5 mm over length 69.8 mm (from Z=0.0 to Z=69.8).\n10. Break all edges (e.g., 2×45° where applicable).\n11. Remove the workpiece from the lathe."}]}
+{"id": "Shaft_00113", "image": "images/Shaft_00113.png", "conversations": [{"from": "user", "value": "Generate the machining process for the stepped shaft in the image. Use the exact 10–11 step template."}, {"from": "assistant", "value": "1. Select a stainless steel round bar (material 1.4301) with diameter at least Ø49.3 mm and length at least 187.7 mm to allow machining allowances.\n2. Mount the bar in a three-jaw chuck.\n3. Face the end.\n4. Finish turn the holding diameter Ø47.3 mm over length 62.6 mm (from Z=0.0 to Z=62.6).\n5. Mount the bar in a three-jaw chuck by the holding diameter Ø47.3 mm.\n6. Face the end and set Z=0.\n7. Center-drill the free end and support the bar with tail support.\n8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.\n9. Finish turn diameter Ø30.0 mm over length 120.1 mm (from Z=0.0 to Z=120.1).\n10. Break all edges (e.g., 2×45° where applicable).\n11. Remove the workpiece from the lathe."}]}