The manufacturing process of precision machining refers to the entire process of making products from raw materials (or semi-finished product processing). For machine production, it includes the transportation and preservation of raw materials, the preparation of production, the manufacture of blanks, the processing and heat treatment of parts, the assembly and commissioning of products, painting and packaging. The content of manufacturing process is very extensive, modern enterprises use the basic principles and methods of system engineering to organize production and guide production, and regard the manufacturing process as a production system with input and output.

In the production process of precision machining, as long as it is to change the shape, size, position and direction performance of the production object, so that it becomes a process of finished products or semi-finished products processing called the process flow. This is a core part of the manufacturing process. Process can be divided into precision casting, forging processing, stamping processing, welding, machining manufacturing, assembly and other processes, mechanical manufacturing process usually refers to the parts of the machining process and the sum of the machine machining process, other processes are called auxiliary processes, such as transportation, storage, power supply, equipment maintenance and so on. The process flow is composed of one or more sequential processes, and a process is composed of multiple work steps.