What are the processing principles for mechanical processing in Changzhou?
(1) To ensure machining accuracy, rough and fine machining should be carried out separately. Due to the large cutting amount during rough machining, the workpiece is subjected to high cutting and clamping forces, generates more heat, and there is obvious work hardening phenomenon on the machining surface. There is a large internal stress inside the workpiece. Assuming that rough and rough machining are carried out continuously, the precision of the precision machined part will be quickly lost due to the de novo dispersion of stress. Regarding certain parts that require high machining accuracy. After rough machining and before precision machining, low-temperature annealing or aging treatment should also be arranged to eliminate internal stress.
(2) Reasonably select equipment. Rough machining mainly involves cutting off most of the machining allowance and does not require high machining accuracy. Therefore, rough machining should be carried out on machine tools with high power and low precision, while precision machining requires the use of larger machine tools. Rough and fine machining are processed on different machine tools, which can fully utilize the equipment's capabilities and extend the service life of precision machine tools.
(3) During the mechanical processing process in Changzhou, heat treatment procedures are often arranged. The arrangement of heat treatment process direction is as follows: to improve the cutting function of metal, such as annealing, normalizing, quenching and tempering, etc., it is generally arranged before mechanical processing in Changzhou. To eliminate internal stress, such as aging treatment, quenching and tempering treatment, etc., it is generally arranged after rough machining and before precision machining. In order to improve the mechanical function of the parts, such as carburizing, quenching, tempering, etc., it is generally arranged after mechanical processing in Changzhou. If there is significant deformation after heat treatment, the machining process must also be arranged.