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CNC CAD/CAM Geometry Checklist

1. Geometry Analysis

Confirm that all critical features are fully defined in the CAD model.

Check for fillets, chamfers, and radii to ensure they are modeled correctly.

Validate the thickness of walls and features against machining capabilities.

2. Feature Identification

Identify all key features that require machining, such as holes, pockets, and profiles.

Ensure features are clearly labeled and categorized for easy reference.

Check for complex geometries that may require special machining strategies.

3. Toolpath Strategy Selection

Determine the most efficient machining strategy for each feature (e.g., roughing, finishing).

Select appropriate cutting tools based on material and geometry.

Plan toolpath direction and approach to optimize machining time and tool life.

4. Toolpath Generation

Generate toolpaths based on the selected strategies for each geometry.

Check that the toolpaths respect the defined tolerances and fits.

Ensure that all toolpaths are continuous and free of unnecessary retracts.

5. Collision Detection

Use simulation tools to identify potential collisions between the tool, workpiece, and fixtures.

Adjust toolpaths as necessary to avoid interferences during machining.

Confirm that the machine's travel limits are respected in the toolpath.

6. Machining Parameters Optimization

Review cutting speeds, feed rates, and depth of cuts for each operation.

Ensure parameters are optimized for the material being machined.

Validate that coolant and lubrication settings are appropriate for the process.

7. Final Verification

Perform a final review of the entire CNC program for accuracy and completeness.

Conduct a dry run or air cut if possible to ensure tool movements are as intended.

Document any modifications made during the verification process for future reference.

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