Dalian precision machining is a process of changing the overall dimension or performance of workpiece Du with machining machinery. According to the temperature Dao state of the workpiece to be processed, it can be divided into cold processing and hot processing. Generally, it is processed at normal temperature without causing chemical or phase changes of the workpiece, which is called cold processing.

Generally, processing above or below normal temperature will cause chemical or phase changes of the workpiece, which is called hot processing. Cold working can be divided into cutting and pressure machining according to the difference of machining methods. Common hot working methods include: heat treatment, forging, casting and welding. The original manual processing is changed to computer program to control the machine tool for processing. The repetitive machining precision of CNC machining is high, especially for some complex shapes that are difficult to be machined manually, such as machining a curved surface.

In terms of software, it is the skills of operators, which involves the operating skills of operators of various equipment. These skills include in-depth understanding of equipment, understanding of machining, understanding of processed parts and materials, etc. these skills can be accumulated slowly in ordinary work. The key to the skills of operators is practice and theory.

In terms of machine production, it includes the transportation and preservation of raw materials, production preparation, blank manufacturing, parts processing and heat treatment, product assembly, commissioning, painting and packaging, etc. The content of production process is very extensive. Modern enterprises use the principles and methods of system engineering to organize and guide production, and regard the production process as a production system with input and output.