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Create a simple aluminum-extrusion-like bar segment. |
Requirements: |
- Outer body is a 20.0 x 20.0 mm square prism, length 60.0 mm. |
- Axis is global Z. |
- Bottom face lies on z=0 and the part is entirely in z>=0. |
- Through-bores run parallel to +Z over full length: |
- one center bore: diameter 5.0 mm at (x, y) = (0, 0) |
- four bores: diameter 3.0 mm at (±7.0, 0) and (0, ±7.0) |
Create one rectangular box. |
Requirements: |
- Dimensions: 30.0 mm (X) x 20.0 mm (Y) x 10.0 mm (Z). |
- Faces aligned with global axes. |
- Bottom face lies on z=0 and the part is entirely in z>=0. |
- Center on X/Y is at (0, 0). |
Create a three-shaft idler gearbox on three pre-existing D-shafts. |
Rig (already present; do not model): |
- Input shaft center at (0, 0), idler shaft center at (20, 0), output shaft center at (50, 0) |
- All shafts are along +Z |
- All shafts are D-shafts: nominal diameter 4 mm with flat at x = center_x + 1.5 mm |
- Shaft z-range is [0, 10] |
- Input speed +120 rpm |
Your part requirements: |
- Include only transmission geometry in z in [0, 10] |
- Use three rigid bodies: |
- one input gear body on the input shaft |
- one idler gear body on the middle shaft |
- one output gear body on the output shaft |
- A direct three-gear train is expected |
- Target output speed is about +55 rpm |
- Evaluation uses simultaneous rigid-body physical simulation on your authored |
mesh geometry directly, on the fixed D-shafts above, at the stated +120 rpm input speed |
Scoring points: |
- correct physical transfer ratio and direction under simulation |
- preserved authored placement on all three shafts |
- correct three-body gear-train structure |
Create a compound right-angle gearbox that reverses output direction. |
Hidden evaluation mounts the model onto three fixed perpendicular shafts and runs a rigid-body physical simulation. |
Model only the gears, not the shafts or housing. |
Shaft layout: |
- Input shaft: global Z axis through (x, y) = (12, 0) |
- Compound shaft: global X axis through (y, z) = (0, 18) |
- Output shaft: global Y axis through (x, z) = (40, 18) |
Gear requirements: |
- Four separate gears total: |
- one gear on the input shaft |
- two gears on the compound shaft |
- one gear on the output shaft |
- Keep the whole model inside: |
- x in [4, 48] |
- y in [-11, 11] |
- z in [7, 29] |
- Approximate outer diameters: |
- input bevel gear: 15 mm |
- compound stage-1 bevel gear: 21 mm |
- compound stage-2 bevel gear: 11 mm |
- output bevel gear: 15 mm |
- Use a normal bevel-gear style layout with matched pitch-cone geometry for both right-angle stages |
- The compound shaft should carry two distinct gears centered near x=17 and x=35 |
- Make the first right-angle stage visibly larger than the second stage |
- The authored gear bodies must be disjoint at rest: zero body-body intersections |
- Under the physical simulation, the design should produce a visible reduction with output speed around -15 rpm from a +30 rpm input |
- The intended arrangement is a two-stage right-angle transfer with reversed output direction |
Scoring points: |
- correct shaft assignment and 4-gear compound structure |
- right-angle layout on the expected axes and shaft centers |
- stage sizes and placement consistent with a stable visible reduction |
- zero intersecting solids in the authored initial state |
- physical transfer under Blender rigid-body simulation |
- output-stage arrangement consistent with the reversed-direction design intent |
Create one solid cube. |
Requirements: |
- Side length exactly 20.0 mm. |
- Faces aligned to global X/Y/Z axes. |
- Top face lies on z=0. |
- Entire cube is in z<=0. |
- Center on X/Y is at (0, 0). |
Create a custom nonstandard threaded bolt-and-nut pair. |
Required layout: |
- Create both parts as one compound. |
- Bolt axis is +Z, centered at (-14, 0). |
- Nut axis is +Z, centered at (+14, 0). |
- Both parts must stay within z in [0, 18]. |
Custom thread specification: |
- Nonstandard right-handed, 2-start thread |
- Nominal major diameter: 7.30 mm |
- Approximate root diameter: 6.00 mm |
- Pitch: 1.35 mm |
- Lead: 2.70 mm |
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