CNC machining refers to a process for machining parts on CNC machine tools. The process specifications of CNC machine tools and traditional machine tools are generally consistent, but significant changes have also taken place. A machining method that uses digital information to control the displacement of parts and tools. It is an effective way to solve the problems of variable parts, small batch size, complex shape and high precision, and to achieve high efficiency and automatic processing. The division of CNC machining operations can generally be carried out as follows:

       (1) In the order of coarse and fine processing. For parts that are prone to machining deformation, it is necessary to perform the shape correction due to deformation that may occur after roughing. Generally, the steps must be separated for roughing and finishing.

       (2) Tool concentration sorting method. It is the process of dividing the tool used, and the same tool is used to machine all the parts that can be completed on the part. Use the second knife and the third handle to complete other parts that they can complete. This reduces the number of tool changes, compresses the dead time, and reduces unnecessary positioning errors.

       (3) The method of ordering the processing parts. For parts with a lot of processing content, the machining part can be divided into several parts according to its structural characteristics, such as inner shape, shape, curved surface or plane. Generally, the plane, the positioning surface, and the rear processing hole are first processed; the simple geometric shape is processed first, and the complex geometric shape is processed; the lower precision part is processed first, and the processing precision requirement is higher.

       In summary, when dividing the process, it must be based on the structure and processability of the part, the function of the machine tool, the amount of CNC machining content of the part, the number of installations and the production organization of the unit. Another car-milling compound CNC lathe manufacturer Zhongshan Nuoxin Intelligent Equipment Co., Ltd. proposes to adopt the principle of process concentration or the principle of process dispersion, which should be determined according to the actual situation, but it must be reasonable.