What are the requirements for precision component machining?

For precision components, machining is very strict, with processes such as feed and discharge. There are specific requirements for size and accuracy, such as 1mm plus or minus micrometers. If the size is too wrong, it will become waste, which is equivalent to having to reprocess, time-consuming and laborious. Sometimes, it may even cause the entire processing material to be scrapped, resulting in increased costs. At the same time, the parts are definitely unusable.

(1) In order to ensure the precision of machining precision parts, it is best to separate the processing of rough and fine mechanical parts. Due to the large cutting amount, high cutting and clamping forces, high heat generation, and significant work hardening on the machining surface of rough mechanical parts, there are significant internal stresses in the workpiece. If rough and rough mechanical parts are processed continuously, the precision of the precision machined part will be quickly lost due to the redistribution of stress.

(2) Reasonably select equipment. Rough machining of mechanical parts mainly involves cutting off most of the machining allowance, and does not require high machining accuracy of the mechanical parts. Therefore, rough machining should be carried out on machine tools with high power and low precision, while precision machining processes require the use of high-precision machine tools.

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