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Machining is the process of changing the dimensions or properties of the workpiece by means of a mechanical device. According to the difference of processing mode can be divided into cutting and pressure processing.

Production types are generally divided into three categories:

1. Single-piece production: The production of products of different structures and sizes individually, with little duplication.

2. Batch production: The manufacture of the same products in batches over the course of a year, with some repetition of the manufacturing process.

Parts that are mass-produced

Parts that are mass-produced

3. Mass production: the production of a large number of products, most of the work place is often repeated a part of a process processing.