CNC Turning vs Milling: What’s the Difference?
CNC turning and milling are the two primary subtractive manufacturing processes. While both use computer-controlled cutting tools to remove material, they differ fundamentally in how the workpiece and tool move. Understanding these differences helps you select the optimal process for your parts.
Process Comparison
| Feature | CNC Turning | CNC Milling |
|---|---|---|
| Workpiece Movement | Rotates | Stationary |
| Tool Movement | Linear | Multi-axis |
| Best For | Cylindrical parts | Complex geometries |
| Surface Finish | Excellent | Good |
| Typical Parts | Shafts, pins | Housings, brackets |
When to Use CNC Turning
- Cylindrical or conical parts
- Parts requiring excellent concentricity
- High-volume production of round parts
- Applications needing smooth surface finish
When to Use CNC Milling
- Complex 3D geometries
- Parts with multiple faces/features
- Prototypes and low-volume production
- Parts requiring pockets, slots, or holes
FAQ
Can turning and milling be combined?
Yes, CNC turn-mill centers combine both processes, allowing complex parts to be completed in a single setup.
Which is more accurate?
Both can achieve similar tolerances (±0.01mm). Turning excels at concentricity; milling excels at complex geometries.
Not sure which process you need? Contact Jingou CNC for expert advice.
