Week07
Group Assignment¶
Lab Safety Training¶
Before operating the CNC machine, we completed safety training covering: - Proper PPE (safety glasses, hearing protection) - Emergency stop location and usage - Tool change procedures - Dust collection system operation - Secure material fixturing - Safe distance during machine operation
Machine Testing¶
We tested the following parameters on our CNC machine:
1. Runout Test¶
- Checked spindle runout using dial indicator
- Verified tool concentricity
2. Alignment Test¶
- Ensured machine bed is level
- Verified X, Y, and Z axis squareness
3. Fixturing¶
- Used screws and clamps
- Ensured material was fully secured
- Checked that no screws intersect toolpath
4. Speeds & Feeds Testing¶
| Material | Tool | Spindle Speed | Feed Rate | Pass Depth |
|---|---|---|---|---|
| Plywood 18mm | 6mm End Mill | 18000 RPM | 2500 mm/min | 3 mm |
| MDF 18mm | 6mm End Mill | 16000 RPM | 2000 mm/min | 3 mm |
5. Toolpaths Tested¶
- 2D Profile
- Drill
- Tabs
- Dogbone fillets
Training https://ehs.mit.edu/training/