What Are The Requirements For Precision Parts Processing?

For precision parts, processing is very strict, and the processing procedures include cutting in, cutting out, etc. There are specific requirements for size, and there are also requirements for accuracy, such as how many microns are plus or minus 1 mm, etc. If the size is too wrong, it will become a scrap, which means it will have to be reprocessed, which is time-consuming and labor-intensive, and sometimes even the entire processed material will be scrapped. This results in an increase in cost, and the parts are definitely no longer usable.

(1) In order to ensure the processing accuracy of precision parts, it is best to process rough and fine mechanical parts separately. Because when machining rough mechanical parts, the cutting amount is large, the cutting force and clamping force on the workpiece are large, and the heat generation is large, and there is significant work hardening on the machined surface of the mechanical parts, and there is large internal stress inside the workpiece. If rough and rough mechanical parts are processed continuously, the precision of the parts after finishing will be quickly lost due to the redistribution of stress.

(2) Reasonable selection of equipment. Rough machining of mechanical parts mainly involves cutting off most of the machining allowance and does not require high machining accuracy of mechanical parts. Therefore, rough machining should be carried out on machine tools with high power and low precision. The finishing process requires higher precision. Precision machine tool processing.

(3) In the processing route of precision parts, a heat treatment process is often arranged. The heat treatment process positions are arranged as follows: In order to improve the cutting performance of metals, such as annealing, normalizing, quenching and tempering, etc., they are generally arranged before the processing of mechanical parts.