Surface quality improving method for non-ferrous metal retainer

Abstract

The invention relates to a surface quality improving method for a non-ferrous metal retainer, and solves problems that the surface of a current retainer after polishing is not smooth and a chipping mark reserved by machining is still apparent, and surface smoothness is not apparently improved; bumping damage frequently occurs on the surface of the retainer, especially a sharper chamfering part, and damage repairing treatment is needed later; and the sharp edge of a locking point part of the retainer cannot meet circular and smooth technological requirements after polishing, a phenomenon that asteel ball is scratched by a locking point of the retainer occurs unavoidably in a using process of a bearing, and the sharp edge needs to be further removed by using a manual burr knife. A bullet-like resin polishing material in 2000 meshes of a granularity and 15X15 of a standard and a white ball-like aluminum oxide polishing material in Phi 2 mm of a standard are used for completing coarse polishing and fine polishing. Polishing time is optimized. The method is used for surface quality improvement of the non-ferrous metal retainer.

Description

technical field [0001] The invention relates to a method for improving the surface quality of a nonferrous metal cage. Background technique [0002] Finishing is a very important process in the cage processing process. The purpose of finishing is: 1. To release the stress generated by the mechanical processing of the cage and improve the dimensional stability of the parts; 2. To ensure that the surface of the cage is smooth and has no sharp angles. The chamfer and the surface of the end face, outer diameter, and inner diameter are smoothly transitioned; 3. Weaken the turning marks on the surface of the cage, and improve the surface finish and appearance quality of the cage. [0003] At present, non-ferrous metal cages with an outer diameter of D≥Ф150mm, such as XXLT2 bearing cages, have an outer diameter of Ф197.8mm and are made of duralumin. Because of its soft texture and large size, the appearance quality of the cage after polishing using the current process method has t...

AI Technical Summary

Problems solved by technology

[0004] The present invention is to solve the problem that the surface of the existing cage is not smooth after polishing, and the cutting marks left by machining are still obvious, and the improvement of the surface finish is not obvious; the surface of the cage, especially the sharper chamfered parts, often has bumps Subsequent repairs are required; the sharp edge at the locking point of the cage cannot meet the smooth process requirements after finishing, and the steel ball will inevitably be scratched at the locking point of the cage during the use of the bearing, and it is necessary to further remove the sharp edge with a manual burr knife. To solve the problem of edge removal, and provide a method for improving the surface quality of non-ferrous metal cages

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