What are the technical principles of large-scale computer pr
source：未知
1. Reasonably select equipment. High machining accuracy is required, and rough machining is mainly to cut off most of the machining allowance. Roughing should be carried out on machines with high power and low precision, and finishing operations require machining with higher precision machines. The roughing and finishing are processed on different machine tools, which can fully utilize the equipment capacity and extend the service life of the precision machine tool.
2, in order to ensure the processing accuracy, coarse and fine processing is best carried out separately. The amount of cutting is large because of roughing. For some parts with high machining accuracy requirements. After roughing and before finishing, a low temperature annealing or aging treatment process should be arranged to eliminate internal stress. The cutting force and clamping force of the workpiece are large, the heat is generated, and the machining appearance has a significant work hardening phenomenon. There is a large internal stress inside the workpiece. If the rough and rough machining are continuously performed, the finished parts are finished. Accuracy is quickly lost due to the redistribution of stress.
3. In the machining process route, a heat treatment process is often arranged. In order to improve the mechanical properties of the parts, quenching, tempering, etc., are generally arranged after machining. The arrangement of the heat treatment process is as follows: in order to improve the cutting performance of the metal, such as annealing, normalizing, quenching and tempering, etc., it is generally arranged before the machining. In order to eliminate internal stress, such as aging treatment, quenching and tempering treatment, etc., it is generally arranged after roughing and before finishing.
