What are the processing principles for Changzhou mechanical processing?

What are the processing principles for Changzhou mechanical processing?

There are three specific processing principles for machining:

(1) In order to ensure machining accuracy, rough and finish machining shall be carried out separately. Due to the large cutting amount, large cutting force and clamping force on the workpiece, high heat generation, and significant work-hardening phenomenon on the machined surface during rough machining, there are large internal stresses in the workpiece. If rough and rough machining are carried out continuously, the accuracy of the finished part will be quickly lost due to the redistribution of stress. For some parts with high machining accuracy requirements. After rough machining and before finishing, low-temperature annealing or aging treatment should also be arranged to eliminate internal stress.

(2) Reasonable selection of 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 a machine tool with high power and low accuracy, while the finishing process requires using a higher machine tool for processing. Rough and fine machining are processed on different machine tools, which can not only fully exert the equipment capacity, but also extend the service life of precision machine tools.

(3) In machining processes, heat treatment processes are often arranged. The location of the heat treatment process is arranged as follows: In order to improve the cutting performance of the metal, such as annealing, normalizing, tempering, etc., it is generally arranged before mechanical processing. In order to eliminate internal stress, such as aging treatment, tempering treatment, etc., it is generally arranged after rough machining 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 significant deformation after heat treatment, final processing procedures must also be arranged.