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What are the requirements for cnc machining of precision parts?

The industry standard for cnc machining of precision parts is very strict. During cnc machining, there are different processes such as one knife and one knife. The size will have different specific needs according to the product, and the processing accuracy requirements will also be different. Generally speaking, the precision cnc processing accuracy requirements are very high, and sometimes it can even be accurate to a micron difference below 1mm. If the size difference is large The product will become waste and needs to be reworked to meet the requirements. This process is very time-consuming and labor-intensive. Sometimes all raw materials will be scrapped, resulting in increased costs. The parts must also be unusable, so many precision parts need to be processed. What are the requirements for precision parts processing? Here is Xiehe's answer:

(1) Usually, in order to ensure the highest accuracy, rough machining parts and finishing parts must be run separately, because the accuracy of cutting, clamping force, heat, and cutting force on the workpiece for rough machining and precision machining will be affected if rough machining is performed continuously And precision machining, the number of precision machined parts will be lost due to the difference in stress.

(2) Rationality of equipment selection. The machining accuracy of rough machined parts is not high, but the main machining allowance is cut, so precision machining requires high precision on the machine tool.

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

(3) Generally speaking, CNC machining of precision parts is almost always a heat treatment process, which can improve metal cutting performance.