The size of the product batch does affect the choice of external thread processing methods. When the batch is very large, it is often produced with professional equipment such as thread rolling and thread rolling (when the thread pitch is small);

When the batch size is not very large, die processing is often used. When processing small-size threads, die processing can be used directly. When processing large-size threads, the thread is often turned first (the amount of processing is left) and then the die is processed to the final size, so thread and die are turned Processing sometimes needs to be used together;

Turning thread is suitable for single-piece small batch production, and it has high flexibility. It can turn large-size threads and various forms of threads, such as trapezoidal threads, sawtooth threads, rectangular threads, non-standard threads, etc.

For example, rough machining can also be milled, high-precision thread machining and grinding.