The quality of machining has a lot to do with the processing principle. In the processing of process equipment parts, there are often some heat treatment processes. In order to improve the position of metal cutting performance, such as annealing, normalizing, and tempering, it is generally arranged before machining.
In order to relieve internal stress, such as aging treatment, quenching and tempering treatment, the general arrangement after roughing, before finishing. In order to improve the mechanical properties of the parts, such as carburizing, quenching, and tempering, the general arrangement is designed after machining the mechanical parts. If there is a large deformation in heat treatment, the processing process is also arranged.
Reasonable selection of equipment in mechanical processing is also very important. The processing of original equipment parts is mainly to cut off most of the machining allowance, which does not require high machining precision of mechanical parts, so in high-power roughing, the precision is not too high. Machine tools with high precision machining accuracy requirements. Processing in different machine tools can give full play to the capabilities of the equipment and prolong the service life of precision machine tools.
In order to ensure the machining accuracy of equipment parts, rough and precision mechanical parts should be processed separately. Due to rough machining, the cutting workload is large, and the surface of the workpiece processed by cutting force, clamping force, heat, and mechanical parts is obviously hardened and has high stress. If the fine and rough machining are continuous, then the machining accuracy of the parts is completed due to the stress. redistributed and quickly lost.
The machining parts of some mechanical parts have high precision. During roughing and finishing, low-temperature annealing and aging stress relief treatment devices should be used. The order of processing a workpiece is closely related to the processing method, so it is necessary to deal with this aspect when machining, so as to better ensure the quality and accuracy of the workpiece.