First, in order to ensure the processing accuracy, rough and finish processing should be carried out separately. Because of the large amount of cutting, the large cutting force, clamping force, heat generation, and the remarkable hardening phenomenon on the machined surface, there are large internal stresses in the workpiece. If rough and rough machining are carried out continuously, the precision of the finished parts will be lost quickly because of the redistribution of stress. For some parts requiring high processing accuracy. After roughing and before finishing, low temperature annealing or aging should be arranged to eliminate internal stress.CNC Machining
2. Reasonable selection of equipment. Rough processing in machine parts processing plants mainly cuts off most of the processing allowance, and does not require higher processing accuracy. Therefore, rough processing should be carried out on machine tools with high power and low accuracy, while finishing processes require higher accuracy. Rough and finish machining are processed on different machine tools, which can not only give full play to equipment capacity, but also prolong the service life of precision machine tools.
Carbon steel turning and milling machine processing
3. Heat treatment process is often arranged in the process route of mechanical processing. The position of heat treatment process is arranged as follows: in order to improve the cutting performance of metals, such as annealing, normalizing, tempering, etc., it is generally arranged before mechanical processing. In order to eliminate internal stress, such as aging treatment, quenching and tempering treatment, it is generally arranged after rough processing and before finishing. In order to improve the mechanical properties of parts, such as carburizing, quenching, tempering, etc., it is generally arranged after mechanical processing. If there is large deformation after heat treatment, the final processing procedure should also be arranged.