Method for grinding plane of bearing ring

A technology for surface grinding and bearing rings, which is applied in the field of bearing processing, can solve the problems of limited improvement of surface quality and inability to improve flatness errors, and achieve the effect of reducing working steps and reducing flatness errors

Inactive Publication Date: 2019-04-26
LUOYANG BEARING RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This grinding method has limited improvement on the plane quality of the workpiece, especially when the flatness error of the workpiece is reduced to less than 0.01mm, grinding with this method can hardly improve the flatness error

Method used

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  • Method for grinding plane of bearing ring
  • Method for grinding plane of bearing ring
  • Method for grinding plane of bearing ring

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The invention is applied to the surface finish grinding of 01 parts and 22 parts of large thin-walled bearings YRT460 / P4 bearings. Part material: GCr15SiMn, nominal sizes are Φ518×Φ600×22 and Φ560×Φ461×16; grinder model: MGK7363; parts accuracy requirements: width deviation ≤50, width variation ≤6, straightness ≤5, flatness ≤5 , Roughness≤0.125, unit: μm.

[0028] Take 20 finely ground parts of the above two parts, respectively use the conventional grinding method and the method of the present invention to grind 10 parts each of 01 and 22 parts. After the grinding is completed, the instrument is tested. The test results are shown in Table 1 and Table 2. When the flatness of the parts processed by conventional grinding is improved to about 10 μm, the flatness quality cannot be further improved, and the processing accuracy of the product is unqualified, and the accuracy of the parts processed by the invention meets the design requirements.

[0029] Table 1 YRT460 / P4.01 grindi...

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PUM

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Abstract

The invention discloses a method for grinding a plane of a bearing ring. The method comprises the steps that an electromagnetic workbench, the bearing ring to be ground and a magnetic stop block whichlimits the bearing ring to be ground are magnetized, the electromagnetic workbench is powered off, the electromagnetic workbench, the bearing ring to be ground and the magnetic stop block are in a residual magnetism weak attraction state, if grinding is carried out, residual magnesium of a magnetic disc coil in the power-off condition is used for attracting the bearing ring and the stop block forweak magnesium grinding, finally, the original planeness error of a machined workpiece end face is lower than 0.03mm, the final grinding requirement is within 0.006mm, and final finishing grinding with the small grinding allowance for the thin-wall bearing end face is achieved.

Description

Technical field [0001] The invention relates to bearing processing technology, in particular to a method for surface grinding and processing of bearing rings. Background technique [0002] The ring plane is the first reference surface of the bearing. The machining quality is directly related to the machining accuracy of the other surfaces of the ring, and is a key factor affecting the rotation accuracy and performance of the finished bearing. The extra-large thin-walled bearing ring with large size, wide plane and low height is a type of product that is more difficult to process in the surface grinding process. This type of bearing ring tends to be warped and deformed after heat treatment or rough grinding and tempering is stable. Conventional surface grinding reduces the flatness error to a certain level, and it cannot further reduce the flatness error. Therefore, the problem of flatness error is the bottleneck restricting the improvement of the plane quality of precision super...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B1/00B24B41/06
CPCB24B1/00B24B41/06
Inventor 张德颖王玉国宋吉祥杨俊生张亚辉魏闯张阗冯艺
Owner LUOYANG BEARING RES INST CO LTD
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