Gears and transmission
Terrain Threader Amphibious Auger Rover
- Bounding box
- 1000.0 × 260.6 × 255.3 mm
- Engine
- Precision B-rep
- Parameters
- 27
- Published
- September 22, 2026
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The prompt
Create an amphibious auger-drive rover assembly called "Terrain Threader" with the following parts: 1. LEFT SCREW AUGER (mirrored pair, part 1 of 2) - Core drum: solid cylinder, 80mm outer diameter, 480mm length, centered on its own axis - Helical flight: one continuous solid helical blade wrapped around the drum, swept from the drum surface (40mm radius) out to 55mm radius (110mm outer diameter) - Blade thickness: 11mm (measured along the screw's axial direction) - Helix pitch: 70mm per revolution (lead angle ≈ 30–35°) - Handedness: LEFT-HANDED thread - Number of turns: 480mm length ÷ 70mm pitch ≈ 6.86 turns - Through-bore: 8mm diameter center hole through the full length, for a steel drive shaft 2. RIGHT SCREW AUGER (mirrored pair, part 2 of 2) - Identical to the left screw in every dimension - Handedness: RIGHT-HANDED thread (mirror image of part 1) 3. DRIVE SHAFTS (x2) - Solid steel rod, 8mm diameter, 500mm length - Passes through the auger's center bore, extending 10mm past each end for coupling 4. CHASSIS FRAME - Two parallel side rails: 20mm x 20mm square extrusion profile, 560mm length, spaced 150mm apart (center-to-center), running parallel to the auger axis - Three cross members: same 20x20mm profile, spanning between the rails, positioned at the front, center, and rear of the frame - Rail height: positioned 26mm above the auger centerline (clearing the 55mm auger radius) - Four vertical support posts (9mm x 9mm square), one at each corner, connecting the rails down to the bearing mount points at the auger shaft ends 5. BEARING MOUNTS (x4, one at each end of each auger shaft) - Flanged pillow block bearing, 8mm bore, mounted to the chassis rail via a 22mm x 22mm x 14mm bracket block 6. DRIVE MOTORS (x2) - Cylindrical gearmotor body, 30mm diameter, 50mm length, mounted at the rear of each rail, coaxial with its drive shaft - Coupling: 18mm diameter x 16mm length cylinder connecting motor shaft to auger shaft 7. ELECTRONICS ENCLOSURE - Rectangular box, 120mm x 55mm x 80mm, sealed lid - Mounted on top of the chassis cross members, centered, raised 35mm above the rail top ASSEMBLY CONSTRAINTS: - The two augers are parallel, spaced 150mm apart (center-to-center), both aligned along the same axis direction (front-to-back) - Both augers must be free to rotate independently about their own axis (mate as revolute/cylindrical joint to their shafts) - The whole rover is symmetric about its center vertical plane, except for the mirrored (opposite-handed) helix threads on the two augers Units: millimeters. Style: functional engineering prototype, no decorative chamfers needed.
Parameters
| Name | Value | Range |
|---|---|---|
| Auger Drum Diameter | 80 mm | 40 – 120 |
| Auger Length | 480 mm | 200 – 800 |
| Blade Inner Radius | 40 mm | 20 – 60 |
| Blade Outer Radius | 55 mm | 40 – 80 |
| Blade Thickness | 11 mm | 4 – 20 |
| Helix Pitch | 70 mm | 30 – 150 |
| Auger Bore Diameter | 8 mm | 4 – 20 |
| Shaft Diameter | 8 mm | 4 – 20 |
| Shaft Length | 500 mm | 300 – 800 |
| Auger Spacing (center-to-center) | 150 mm | 100 – 300 |
| Rail Cross-section | 20 mm | 10 – 40 |
| Rail Length | 560 mm | 400 – 800 |
| Rail Height (above auger axis) | 75 mm | 50 – 150 |
| Cross Member Size | 20 mm | 10 – 40 |
| Support Post Size | 9 mm | 5 – 20 |
| Bearing Block Length | 22 mm | 10 – 40 |
| Bearing Block Width | 22 mm | 10 – 40 |
| Bearing Block Height | 14 mm | 10 – 30 |
| Bearing Bore Diameter | 8 mm | 4 – 20 |
| Motor Diameter | 30 mm | 15 – 60 |
| Motor Length | 50 mm | 20 – 100 |
| Coupling Diameter | 18 mm | 10 – 40 |
| Coupling Length | 16 mm | 8 – 40 |
| Enclosure Length | 120 mm | 60 – 200 |
| Enclosure Width | 55 mm | 30 – 120 |
| Enclosure Height | 80 mm | 40 – 150 |
| Enclosure Raise above Rail | 35 mm | 0 – 100 |
Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.
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