What are the factors that affect the machining accuracy in precision parts machining

What are the factors that affect the machining accuracy in precision parts machining

In the field of precision parts processing, a complete system consisting of machine tools, fixtures, workpieces and tools is called a process system. In the process of machining, the relative position of the workpiece and the tool determines the size, shape and position of the part. Therefore, the problem of machining accuracy also involves the accuracy of the entire process system. Various errors of the process system will be reflected as geometric errors of the processing system in different ways and programs under different conditions during the processing. According to the nature of the process system error, it can be summarized as the geometric error of the process system, the error caused by the force deformation of the process system and the error caused by the internal stress of the workpiece.

In the field of precision parts processing, the geometric errors of the process system include the principle error of the processing method, the geometric error of the machine tool, the adjustment error, the manufacturing error of the tool and fixture, the clamping error of the workpiece and the error caused by the wear of the process system.