Gears and transmission
Alt-Azimuth Telescope Mount Assembly
- Bounding box
- 4635.0 × 240.0 × 200.0 mm
- Engine
- Precision B-rep
- Parameters
- 61
- Published
- November 5, 2026
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The prompt
Design a complete, workshop-ready mechanical CAD assembly for an AI-powered autonomous Alt-Azimuth telescope mount. The system must support 0°–360° azimuth rotation and 0°–90° elevation movement, using two NEMA 17 stepper motors, gear or belt transmissions, bearings, shafts, and mechanical limit switches. Create a practical, stable, and manufacturable design suitable for a university graduation project. **Required deliverables:** - Complete editable 3D CAD assembly. - STEP files for workshop compatibility. - STL files for 3D printing. - DXF files for CNC or laser cutting. - Detailed engineering drawings with dimensions and hole positions. - Exploded assembly view. - BOM with materials and standard components. - Assembly instructions. Prioritize aluminum, laser-cut plates, CNC machining, and 3D-printed brackets where appropriate. If possible, use FreeCAD scripting to generate actual CAD files. Do not provide only renders, screenshots, or conceptual designs. The final result should be ready for review by a mechanical engineer and presentation to a local workshop. Clearly state assumptions and ask for missing critical dimensions before finalizing.
Parameters
| Name | Value | Range |
|---|---|---|
| Exploded Layout Gap | 300 mm | 150 – 600 |
| Base Plate Size | 240 mm | 180 – 320 |
| Base Plate Thickness | 8 mm | 5 – 15 |
| Base Central Bore | 80 mm | 40 – 140 |
| Azimuth Bolt Circle Dia | 160 mm | 120 – 220 |
| Azimuth Bolt Count | 8 | 4 – 12 |
| Leveling Foot Inset | 20 mm | 10 – 40 |
| M6 Clearance Hole | 6.6 mm | 6.2 – 7.2 |
| M8 Clearance Hole | 8.4 mm | 8 – 9 |
| M2.5 Clearance Hole | 2.7 mm | 2.5 – 3.2 |
| Slewing Bearing OD | 200 mm | 150 – 260 |
| Slewing Bearing ID | 80 mm | 50 – 140 |
| Slewing Bearing Height | 20 mm | 10 – 35 |
| Azimuth Platform Dia | 210 mm | 160 – 280 |
| Azimuth Platform Thickness | 8 mm | 5 – 15 |
| Platform Central Bore | 40 mm | 20 – 90 |
| Ring Gear Pocket OD | 60 mm | 40 – 90 |
| Ring Gear Pocket ID | 50 mm | 30 – 80 |
| Ring Gear Pocket Depth | 3 mm | 1 – 6 |
| Motor Cutout Length | 46 mm | 30 – 70 |
| Motor Cutout Width | 44 mm | 30 – 70 |
| Upright Hole Spacing | 120 mm | 80 – 170 |
| Upright Hole Half-Spacing | 30 mm | 15 – 55 |
| NEMA 17 Frame Size | 42.3 mm | 35 – 60 |
| NEMA 17 Body Length | 40 mm | 28 – 60 |
| Motor Shaft Dia | 5 mm | 3 – 8 |
| Motor Shaft Length | 24 mm | 10 – 40 |
| NEMA 17 Bolt Pattern | 31 mm | 20 – 45 |
| Motor Bracket Length | 65 mm | 45 – 90 |
| Motor Bracket Width | 60 mm | 40 – 85 |
| Motor Bracket Thickness | 5 mm | 3 – 8 |
| Motor Bracket Wall Height | 55 mm | 35 – 80 |
| Tension Slot Length | 14 mm | 8 – 25 |
| Tension Slot Width | 6.6 mm | 5.5 – 8 |
| GT2 Belt Pitch | 2 mm | 1.5 – 3 |
| Pinion Teeth | 20 | 14 – 30 |
| Ring/Pulley Teeth | 60 | 40 – 90 |
| Pulley Belt Width | 6 mm | 4 – 12 |
| Pinion Bore | 5 mm | 3 – 8 |
| Azimuth Ring Pulley Bore | 30 mm | 15 – 50 |
| Elevation Pulley Bore | 10 mm | 6 – 16 |
| Upright Plate Width | 90 mm | 60 – 140 |
| Upright Plate Height | 170 mm | 110 – 250 |
| Upright Plate Thickness | 6 mm | 4 – 12 |
| Upright Bearing Bore | 26 mm | 12 – 40 |
| Bearing Bore X Position | 65 mm | 40 – 110 |
| Bearing Bore Z Height | 135 mm | 80 – 210 |
| Elevation Shaft Dia | 10 mm | 6 – 20 |
| Elevation Shaft Length | 180 mm | 120 – 260 |
| 6000-2RS Bearing OD | 26 mm | 16 – 42 |
| 6000-2RS Bearing ID | 10 mm | 5 – 20 |
| 6000-2RS Bearing Width | 8 mm | 5 – 16 |
| Saddle Length | 150 mm | 100 – 220 |
| Saddle Width | 100 mm | 70 – 150 |
| Saddle Thickness | 8 mm | 5 – 16 |
| Vixen Dovetail Jaw Width | 45 mm | 30 – 70 |
| Vixen Dovetail Depth | 6 mm | 3 – 12 |
| Limit Bracket Length | 30 mm | 20 – 50 |
| Limit Bracket Width | 25 mm | 15 – 40 |
| Limit Bracket Height | 15 mm | 10 – 30 |
| Limit Bracket Wall | 3 mm | 2 – 6 |
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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