1) Tool centralized ordering method is to divide the processes according to the tools used, and use the same tool to machine all the parts that can be completed on the part. Use the second knife and the third knife to complete other parts they can complete. This can reduce the number of tool changes, reduce idle time, and reduce unnecessary positioning errors.
(2) Sorting method by processing parts For parts with many processing contents, the processing parts can be divided into several parts according to their structural characteristics, such as inner shape, shape, curved surface or plane. Generally, planes and positioning surfaces are processed first, and then holes are processed; simple geometric shapes are processed first, and then complex geometric shapes; the parts with lower precision are processed first, and then the parts with higher precision requirements are processed.
(3) For parts that are prone to processing deformation by the roughing and finishing ordering method, due to the deformation that may occur after roughing, the shape needs to be adjusted, so in general, all the rough and finishing processes must be separated. .
In summary, when dividing processes, we must flexibly grasp the structure and manufacturability of the parts, the function of the machine tool, the number of parts CNC machining content, the number of installations and the production organization of the unit. It is also recommended to adopt the principle of process concentration or the principle of process dispersion, which should be determined according to the actual situation, but must strive to be reasonable.