What is the difference between CNC milling and CNC turning?

CNC turning and CNC milling are both processes used in CNC machining, but there are some significant differences between the two.

1. Operation: In CNC turning, a stationary cutting tool is used to remove material from a rotating workpiece, whereas in CNC milling, the cutting tools rotate and move across the stationary workpiece.

2. Geometry: CNC turning is more suitable for creating cylindrical shapes such as bolts, nuts, pipes, and shafts. CNC milling is better suited for more complex geometries such as pockets, slots, and complex shapes.

3. Tooling: Turning tools are generally simpler and more robust, while milling tools are more complex and can have more cutting edges.

4. Materials: CNC turning machines are mostly used for turning materials such as round bars, billets, and blocks, while CNC milling machines are used for a wide range of materials such as metals, plastics, wood, and composites.

5. Speed: In general, CNC turning is faster than CNC milling, as the tools are shorter and the process is simpler.

6. Cost: CNC turning is usually less expensive than CNC milling, as the tools are simpler and less expensive.

In summary, CNC turning is best suited for creating simple cylindrical shapes, while CNC milling is better suited for creating more complex geometries. Both processes have their advantages, and the choice between them will depend on the specific requirements of each job.