Process method for high-precision mechanical accessory part polishing

Abstract

The invention discloses a process method for high-precision mechanical accessory part polishing. The process method comprises the following steps of S1, surface treating; S2, chemical treating; and S3, mechanical polishing, specifically, polishing liquid is sprayed on the surface of a high-precision mechanical accessory part, a mechanical grinding wheel rotates to perform polishing treatment on the surface of the high-precision mechanical accessory part until the surface roughness of the high-precision mechanical accessory part is Ra 0.1-0.2 mm to stop the polishing treatment, wherein with thetotal weight part being 100%, the polishing liquid comprises the following raw materials of, by weight, 2-8% of sodium tetraborate, 0.4-1.5% of benzisothiazolinone, 3-10% of sodium lauryl sulfonate,1.5-6% of diamond compound abrasive, 1.0-1.8% of perfluoroalkyl polyoxyethylene ether, 1-3% of modified cubic boron nitride, 0.2-1.0% of polyether modified silicone oil and the balance water. By meansof the process method for the high-precision mechanical accessory part polishing, the dimensional precision and the appearance of the high-precision mechanical accessory part will not be changed after the polishing is performed, the gloss is significantly improved, and meanwhile, the part surface roughness is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of parts processing, in particular to a polishing process for high-precision mechanical supporting parts. Background technique [0002] Polishing is currently the main method to increase the surface finish of parts and reduce roughness. At present, the commonly used polishing methods for metal parts are roughly as follows: (1) the more important parts are manually polished with abrasive materials and electric tools; (2) when there are fewer burrs, use current The microscopic protrusions on the surface of the material are corroded in the electrolyte; (3) Vibration polishing is used for parts that are not strictly required to be easily deformed. [0003] High-precision mechanical supporting parts are mostly used in aerospace and automobile ships. The precision of the parts will affect the entire operation of the device. However, the surface roughness of the high-precision mechanical supporting parts obtained b...

AI Technical Summary

Problems solved by technology

[0003] High-precision mechanical supporting parts are mostly used in aerospace and automobile ships. The precision of the parts will affect the entire operation of the device. However, the surface roughness of the high-precision mechanical supporting parts obtained by the existing polishing process method is too large to meet the requirements of use. Among them, due to the unreasonable formulation of the polishing liquid used for high-precision mechanical parts, the surface of the polished part is uneven and smooth, and the damage layer is deep, resulting in large errors. Unreasonable particle size design can easily lead to embedded polishing particles on the surface, which will adversely affect the polishing quality. Therefore, we propose a polishing process for high-precision mechanical parts