With the continuous development of precision processing technology and large-scale applications, people have put forward higher requirements for product performance and quality. Product performance and quality are mainly implemented based on product design, and then precision processing equipment and assembly Process to ensure the realization of its quality. The quality of precision hardware parts usually includes the accuracy of the product and the surface quality of the product. The surface quality of precision machining is a very important indicator, especially after high-speed and high-temperature processing. Under high pressure conditions, its reliability may have a very large impact.