4.5-Axis CNC Machining for Copper C110 (ETP Copper)
4.5-axis machining of copper is used for complex waveguide cavities, RF components, and electrode manufacturing where the compound geometries cannot be achieved with 3-axis work.
Recommended Machining Parameters
| Parameter | Value |
|---|---|
| Achievable Tolerances | ±0.02 mm |
| Surface Finish | Ra 0.4-1.6 μm |
| Cutting Speed | 100-300 m/min |
| Feed Rate | 0.05-0.15 mm/tooth |
| Tooling Recommendations | PCD ball nose end mills. Sharp uncoated carbide. Polished flute tools to reduce adhesion. |
Expert Machining Tips
1
Manage long chips carefully with through-spindle air
2
Program consistent engagement to avoid chip nesting
3
PCD tooling for best surface quality
4
Consider EDM for very complex cavity shapes
Common Parts Made
Waveguide cavities
RF resonators
Complex electrode shapes
Particle accelerator components
Machining Challenges
- Chip management in enclosed 4.5-axis work envelope
- Material softness causes deflection
- High material cost for large billets