Electrochemical polishing method for bearing retainer

Abstract

The invention relates to an electrochemical polishing method for a bearing retainer. The electrochemical polishing method for the bearing retainer comprises the steps of: preparing, electrochemical polishing, electrolyte mixing, cleaning by using cold water, passivating, cleaning by using hot water, drying and rust preventing; the electrolyte is prepared from phosphoric acid, water and chromic anhydride in a volume ratio of 8:4:1; the temperature of the electrolyte is controlled to be below 40 DEG C; in the electrochemical polishing step, the current density is 35A/square decimeter, the working voltage is 8-10V, the distance between the negative pole of an electrochemical polishing machine and a processed workpiece is 5-10mm, and the electrochemical polishing time is 90s; the preparing step comprises the sub-steps of: preparing the electrolyte, adding the electrolyte in an electrolytic vessel, placing a lead plate in the electrolytic vessel, connecting the lead plate and the negative pole of the electrochemical polishing machine, and preparing the processed workpiece; and the step of preparing the processed workpiece comprises the following sub-steps of: performing oil removing and cleaning on the processed workpiece, cleaning by using hot water, cleaning by using cold water, hanging on a hanger, and connecting the processed workpiece with the positive pole of the electrochemical polishing machine. According to the electrochemical polishing method, the clamping as well as the material charging and discharging are convenient, the occupying area is small, the cost is low, the burr removing effect is good, the labor intensity is obviously reduced, and the time and the labor are saved.

Description

technical field [0001] The patent of the present invention relates to an electrolytic polishing method for a bearing cage, in particular to an electrolytic polishing method for a special-type short cylindrical roller bearing cage. Background technique [0002] A bearing is a component used in a rotating mechanism to support, reduce friction and bear loads. The bearing is specially designed for air-conditioning compressors. Due to its small cross-section, high bearing capacity and small deformation, it is suitable for high-speed operation, low vibration and quiet occasions. At the same time, the product has a large radial load-bearing capacity, and the rollers and raceways Linear contact, suitable for shock loads, long life. This product is widely used in air-conditioning compressors because of its simple structure, compact size, high strength, strong bearing capacity, high rated speed and high precision. At present, most of the special-type products are imported or a small...

AI Technical Summary

Problems solved by technology

[0003] 1. The special type of short cylindrical roller bearing cages currently used in air-conditioning compressors all use traditional mechanical methods to remove burrs. Therefore, some large burrs and burrs at right-angled corners are difficult to completely eradicate, resulting in the accuracy of the cage. not tall

[0004] 2. At present, this special type of bearing cage adopts traditional mechanical methods in the process of eliminating burrs, resulting in hard-to-eradicate burrs that will seriously affect the rotation accuracy of the rolling elements, and there is a risk of scratching the surface of the rolling elements. The smoothness of the surface is very unsatisfactory, and the oil film is difficult to form, which is not conducive to the vibration and noise level of the bearing, and it is not enough to ensure the low noise level and rotation performance required by the air conditioner compressor.

[0005] 3. At present, the mechanical polishing method of this special type of cage occupies a large area, the labor intensity of the workers is high, the cost is high, and it is difficult to achieve economic benefits