Numerical control machining refers to a process method for machining parts on CNC machine tools. The process procedures for CNC machine tool machining are generally consistent with those for traditional machine tool machining, but there have also been significant changes. A mechanical processing method that uses digital information to control the displacement of parts and tools. It is an effective way to solve the problems of variable variety, small batch size, complex shape, high precision of parts, and to achieve efficient and automated processing.