Special processing technology for angular contact precision bearing cage

Abstract

The invention discloses a special processing technology of an angular contact precision bearing retainer, which relates to the field of a processing technology of a precision bearing retainer. The special processing technology is characterized in that a retainer is fixedly arranged on a locating tire base in one step, the retainer is tightly pressed by a locating tire cover, four clearance grooves of each pocket hole in an entity retainer are processed firstly, the probability of mutual penetrating among the clearance grooves is removed, the clearance grooves are used as a boring reference for starting the boring until getting close to the position of the clearance grooves, and one clearance groove among the four clearance grooves is used as an initial reference for starting the processing of the pocket holes by adopting a milling cutter until the last pocket hole is processed completely after most of pocket hole processing stress is removed. According to the special processing technology disclosed by the invention, the locating error is removed, the processing stress is removed, and the standard quality requirement can be reached by the processed bearing retainer which is complicated in structure and is light; and the special processing technology disclosed by the invention is progressive, the consistency of the size of the processed retainer is ensured, and the production efficiency is greatly increased.

Description

technical field [0001] The invention relates to the processing technology field of precision bearing cages, in particular to a special processing technology for hollowing out knife grooves in angular contact precision bearing cages. Background technique [0002] Since the performance indicators of copper alloy are in line with the material requirements of the bearing cage, 90% of the medium and large precision bearing cages are made of copper material, but copper resources are very scarce and the cost is high, and the economical cage structure is constantly being developed. , A precision bearing cage processed by the present invention is a kind of angular contact bearing saving type cage. In order to achieve the purpose of saving copper, the cage is designed to be very lightweight, achieving the goal of saving copper with thin wall thickness and light weight. This kind of cage has a special structure. After the cage pocket is processed, the minimum and thinnest wall thickne...

AI Technical Summary

Problems solved by technology

This kind of cage has a special structure. After the cage pocket is processed, the minimum and thinnest wall thickness of the cage beam is only 0.5 mm. On the solid wall thickness of 0.5 mm, it is also necessary to process the pocket hole with a size of R0. 5 mm, even if ignoring the deformation of the bore hole during processing, the cumulative error of the pocket tolerance, the equal division of the pocket, and the equal division of the empty sipes, two symmetrical empty sipes must be processed at the same time on a thin wall of 0.5 mm. It is too difficult to ensure that dozens of pockets are consistent. When processing empty slots, there is a problem that the beam of the cage will penetrate, so that the cage loses the most basic isolation function. Dozens of pockets, there is a Goofing around, it's trash

The current conventional technology cannot be processed. How to process such a difficult bearing cage is a technical problem that needs to be solved urgently.

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