Understanding CNC Turning Applications
Modern CNC machining has blurred the traditional lines between turning and milling operations. While CNC machining centers can create round features and lathes now have live-tool capabilities, certain parts remain better suited for specific processes.
Ideal Parts for Turning
- Cylindrically symmetric components (pistons, hydraulic fittings)
- Parts with long length-to-diameter ratios
- Components with v-shaped grooves or concentric features
- Parts requiring smooth, round surfaces
Size Capabilities
Maximum Diameter | 2.95 in. (75mm) |
Maximum Length | 9 in. (228mm) |
Minimum Diameter | 0.03 in. (4mm) |
Minimum Length | 0.060 in. (1.5mm) |
Available Materials
- Aluminum
- Steel
- Stainless Steel (select grades)
- Brass
- Copper
- Titanium
- More…
Additional Capabilities
Modern CNC lathes offer enhanced features:
- Y-axis capability for off-center features
- Minimum groove width: 0.047 in. (1.2mm)
- Radial holes down to 0.08 in. (2mm)
- Axial holes down to 0.04 in. (1mm)
- Text engraving (minimum 0.020 in./0.5mm width)
- UNC, UNF, and metric threading options
Key Advantage: Turning cylindrical parts from bar stock is typically more efficient and produces less material waste compared to milling from rectangular stock.
Example Applications
Good for CNC Turning | Better for CNC Milling |
---|---|
Pint glasses | Coffee cups with handles |
Dumbbell grips | Rectangular valve bodies |
Sprinkler hose barbs | Picture frames |
Salt shakers | Milk cartons |
Surface Finish Considerations
Turned surfaces typically achieve:
- Smoother finish than milled surfaces
- Better roundness
- Optional bead blasting for matte finish