Double-channel grinding method of double-row ball bearing

Abstract

The invention relates to a double-channel grinding method of a double-row ball bearing. The method is characterized in that a centerless clamp is adjusted, wherein an axial positioning support of the centerless clamp is ground by using an equipment self-grinding mode, and the end face runout of the axial positioning support is controlled within 2 micrometers; the angle alpha of an equipment workpiece frame is adjusted according to the requirements of the sizes of a ground loop, comprising the diameters of channels De / di, the positions of the channels a / b, the channel spacing a1 / b1 and the curvature radiuses of the channels Re / Ri, and the angle adjustment range is between 0 degrees and 25 degrees; a control cabinet of a CNC digital control system is used for controlling the shape of a single-point trimming grinding wheel of an arc trimmer; the positioning surface of the ground loop is fixed on the centerless clamp, and the control cabinet of the CNC digital control system is adopted to control the feed travels of an equipment workpiece X axis and a grinding wheel grinding frame Z axis meanwhile; after locking, a rotating type electric main shaft and a rotating equipment workpiece main shaft drive the ground loop so as to ensure that the grinding wheel enters a first row of channels to be ground; and after the grinding of the first row of channels is finished, the grinding wheel is fed into the second row of channels through the CNC digital control system and locked to grind the second row of channels.

Description

(1) Technical field [0001] The invention relates to a double-row ball bearing double-groove grinding method, which is suitable for the outer ring of a double-row angular contact ball bearing, the inner and outer ring of a double-row deep groove ball bearing, the inner ring of a third-generation wheel hub bearing of an automobile, and a flange shaft assembly Double channel grinding. It belongs to the field of mechanical processing. (2) Background technology [0002] The grinding quality of double row ball bearings and double grooves is one of the main indicators for evaluating the product quality of double row ball bearings. It directly affects the clearance and fit rate of double row ball bearings, and affects the product quality and processing of double row ball bearings. Efficiency, and how to correctly and effectively control the clearance of double row ball bearings and improve the integration rate of products is one of the technical problems that many bearing manufactu...

AI Technical Summary

Problems solved by technology

[0002] The grinding quality of double row ball bearings and double grooves is one of the main indicators for evaluating the product quality of double row ball bearings. It directly affects the clearance and fit rate of double row ball bearings, and affects the product quality and processing of double row ball bearings. efficiency, and how to correctly and effectively control the clearance of double row ball bearings and improve the integration rate of products is one of the technical problems that many bearing manufacturers have existed for a long time but have not been effectively solved

To solve this problem, the key is to ensure the grinding process of double row ball bearings and double grooves. At present, many enterprises have not mastered their technology or adopted double groove shaped grinding, and some enterprises are equipped with forming tools for grinding. However, different bearings need to be equipped with different forming tools due to the curvature radius of the groove and the distance between the two grooves. The production cost is high and the processing efficiency is low. Or the two grooves of the bearing ring are ground twice by turning around. Or separate grinding, due to the inconsistency of the width and dimension of the bearing ring and the processing error, the distance between the two grooves of the bearing is relatively large, the matching rate is low, there are many reworked products, and it is difficult to effectively control the quality of the bearing product. Unfavorable reliability and safety of use

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