What are the requirements for precision machining of parts?

The standards in the precision parts machining industry are very strict, and there are different processes such as cutting in and cutting out during the machining process. The size will also have different specific requirements depending on the product, and the processing accuracy requirements will also vary. Generally speaking, high precision is required for precision machining, and sometimes it can even be accurate to a micrometer difference of less than 1mm. If the size difference is significant, the product will become scrap and will need to be reprocessed to meet the requirements, which is a time-consuming and labor-intensive process. Sometimes all raw materials are scrapped, resulting in increased costs, and at the same time, the parts are inevitably unusable. Therefore, precision parts processing has many requirements.

What are the requirements for precision machining of parts?

(1) Usually, due to the different cutting amounts, heat generation, and cutting forces on the roughness and accuracy of parts, in order to ensure the machining accuracy of parts, it is necessary to separately process rough parts and precision mechanical parts. If rough machining and precision machining are carried out continuously, the accuracy of precision machined parts will be lost due to different stresses.

(2) The rationality of equipment selection. The machining of rough parts does not require high machining accuracy, but mainly involves reducing machining allowances, so precision machining requires very high-precision machine tools. In the processing route of precision parts, heat treatment processes are often arranged. The position 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, it is generally arranged before the machining of mechanical parts.

(3) Generally speaking, almost all precision parts have heat treatment processes that can improve the cutting performance of metals. The processing and manufacturing of precision parts not only require the accuracy and stability of machine tools and the accuracy of cutting tools and fixtures to ensure, but also require precision measuring instruments for calibration and measurement. Some are during the processing, while others are inspected afterwards.