---
license: cc
---
# Technical Documents: Shafts Process (v1, PNG)
---
license: cc-by-4.0
pretty_name: Technical Documents: Shafts Process (v1, PNG)
language:
- en
task_categories:
- visual-question-answering
size_categories:
- 1K<n<10K
annotations_creators:
- machine-generated
source_datasets:
- original
---

- ~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."
    }
  ]
}
```