In machining, the process of achieving high accuracy and surface quality requirements for a workpiece. Generally, it is performed after rough machining and semi finishing. Finishing can be divided into high gloss and precision grinding, including precision grinding, ultra precision grinding, and mirror grinding. Using precision machining technology can comprehensively improve the machining accuracy and surface quality of the workpiece.

High gloss and high precision grinding also requires a high accuracy and rigidity of the machine tool. The grinding process involves using finely trimmed grinding wheels to produce multiple micro cutting edges of equal height on each abrasive grain. With a small grinding depth and under appropriate grinding pressure, very fine chips are cut from the surface of the workpiece, plus the sliding, pressing, smoothing, and friction polishing effects of multiple non feed grinding stages when the micro cutting edge is in a micro state, Thereby obtaining a highly polished surface with high machining accuracy and good physical and mechanical properties.