With the development of industry. The precision and complexity of machining is constantly advancing. Especially the emergence of microcomputers. In the industrial control of a wide range of applications. The efficiency of machining has been improved. So that machining can be automated operation. And has the intelligence. In the event of a problem. Can through the system built-in artificial expert system. Solve some problems by themselves These technological advances. All in order to improve the precision and efficiency of machining. It can be seen from the development of machining. Mechanical products of different periods. The greater difference is reflected in the processing of sex such as now in people's daily lives. Often see a lot of miniature, complex mechanical products. In the process of manufacturing such products. Will inevitably use machining technology whether in the automobile large mechanical products or clocks and other miniature mechanical products. All need to polish process. The more mechanical products. The higher the requirements of the polishing process. Therefore to improve the level of machining.