What are the specific requirements for precision machining parts processing?
As we all know, for precision machining parts, processing is very strict. The processing steps include a series of steps such as feeding and cutting. The size and precision are also required. For example, how many micrometers are 1mm positive and negative, etc. If the size is too small, it will become a waste product, which is equivalent to reprocessing. It takes time and effort, and sometimes even scraps the entire processing material, which causes an increase in cost. At the same time, parts are definitely not used.
1. In order to ensure the precision of precision parts processing, the processing of rough and fine mechanical parts is best carried out separately. Because the cutting amount is large when the rough mechanical parts are processed, the cutting force and clamping force of the workpiece are large, the heat generation is large, and the machining surface of the mechanical parts has a significant work hardening phenomenon, and there is a large internal stress inside the workpiece. When the machining of coarse and coarse mechanical parts is carried out continuously, the precision of the finished parts will be quickly lost due to the redistribution of stress.
2. Reasonable selection of equipment. The processing of rough mechanical parts is mainly to cut off most of the machining allowance, and does not require high machining precision of mechanical parts. Therefore, rough machining should be carried out on machine tools with high power and low precision, and the finishing process requires higher Precision machine tool processing.
3. In the precision machining parts processing route, heat treatment processes are often arranged. 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 of the mechanical parts.
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