① Thread turning:

Thread turning on a lathe can be done with a forming turning tool or a thread comb. Turning threads with a forming turning tool is a common method for single-piece and small batch production of threaded workpieces due to the simple tool structure; turning threads with a thread combing tool has high production efficiency, but the tool structure is complex, only suitable for medium and large batch production. Turning short thread workpieces with fine pitch.

② Thread milling:

Milling with a disc or comb cutter on a thread mill.

Disc milling cutters are mainly used for milling trapezoidal external threads on workpieces such as screw and worm. Comb-shaped milling cutter is used for milling internal and external common threads and tapered threads. Since it is milled with a multi-blade milling cutter and the length of its working part is greater than the length of the thread to be processed, the workpiece only needs to be rotated 1.25 to 1.5 turns to be processed. Done with high productivity.