Precision machining is a kind of machining, which is a kind of machining process to achieve the line position tolerance required by the drawing, and the workpiece will have certain changes to its own performance characteristics and shape construction when this process is carried out.

Mechanical parts design, as a discipline of the mechanical profession, is one of the most popular professions chosen by science students and one of the strongest engineering disciplines; at present, the profession requires not only good knowledge of science and technology, but also excellent drawing ability and spatial imagination, and due to the development of domestic industry and the changing needs, the machining industry's demand for personnel is also increasing. Due to the development of domestic industry and changing needs, the demand for personnel in the machining industry is also increasing, and the employment rate of mechanical majors can reach 95%.

With the development and progress of domestic industry, machining has changed a lot and precision machining techniques have come to the fore, with many industries such as home appliances, automobiles, hardware and medical manufacturing using more or less precision parts. It could be just a component or it could be the core component of a mechanical device. In short, it is important and plays an irreplaceable role.

And these precision parts for precision machining manufacturing there are two processes, one is thermal processing a cold processing, thermal processing is through heat treatment and other ways to make parts in very warm conditions, chemical or physical changes to achieve the shape change requirements. Cold machining, on the other hand, does not occur at room temperature, chemical and physical changes to achieve the shape change requirements, generally using cutting technology. In the future, under the premise of satisfying processing and environmental protection, precision machining will be combined with technology to become an important and sustainable science.