Brackets and mounts
Mecanum Robot Chassis
- Bounding box
- 280 × 260 × 80 mm
- Engine
- 3D Printing B-rep
- Parameters
- 23
- Published
- October 28, 2026
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The prompt
Design a 4-wheel mecanum vehicle in millimetres. Coordinate system: Z up, ground plane at Z = 0, +Y is front, +X is right, origin at the plan-view centre of the chassis. Build it as separate named solid bodies. CHASSIS: rectangular plate 200 mm (X) x 260 mm (Y) x 5 mm thick, with its bottom face at Z = 62 and top face at Z = 67. Fillet the four vertical corners with a 10 mm radius. MOTOR BRACKETS (4): L-shaped brackets, 2 mm thick, 40 mm wide, hanging below the plate. The horizontal leg is 30 mm long and is fixed against the underside of the plate, with its outer edge flush with the plate side edge at X = +/-100. The vertical leg is 45 mm tall and points downward, with its outer face at X = +/-100. Each vertical leg has one 12 mm hole whose centre is at Z = 40, and two 3.2 mm holes 31 mm apart on either side of it. Bracket centres are at Y = +75 and Y = -75, mirrored on the left and right sides. Add a 3 mm inside fillet at the bend. The assembled vehicle is symmetric about X = 0 and Y = 0, with all four wheels touching the ground plane at Z = 0.
Parameters
| Name | Value | Range |
|---|---|---|
| Chassis length X | 200 mm | 100 – 400 |
| Chassis length Y | 260 mm | 100 – 400 |
| Chassis plate thickness | 5 mm | 2 – 15 |
| Chassis underside height | 62 mm | 20 – 150 |
| Vertical corner fillet radius | 10 mm | 1 – 40 |
| Sheet thickness | 2 mm | 1.2 – 6 |
| Bracket width along Y | 40 mm | 20 – 100 |
| Horizontal leg length | 30 mm | 15 – 80 |
| Vertical leg height | 45 mm | 20 – 120 |
| Inside bend fillet radius | 3 mm | 0 – 10 |
| Bracket centre offset in Y | 75 mm | 10 – 120 |
| Axle hole diameter | 12 mm | 5 – 25 |
| Mounting hole diameter | 3.2 mm | 2 – 8 |
| Mounting hole spacing along Y | 31 mm | 10 – 60 |
| Wheel outer diameter | 80 mm | 40 – 160 |
| Wheel width along X | 40 mm | 20 – 80 |
| Roller radius | 7 mm | 3 – 15 |
| Roller overall length | 44 mm | 20 – 80 |
| Number of rollers | 8 mm | 6 – 16 |
| Roller tilt angle | 45 deg | 20 – 70 |
| Side plate diameter | 64 mm | 30 – 120 |
| Side plate thickness | 4 mm | 1.5 – 10 |
| Hub diameter | 44 mm | 20 – 70 |
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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