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Method for measuring axial clearance and preload clearance of back-to-back angular contact ball bearings

A technology of angular contact ball bearings and axial clearance, applied in the direction of mechanical clearance measurement, etc., can solve the problems of cumulative error, complex operation procedures, cumbersome efficiency, etc., to achieve guaranteed accuracy, simple operation, A value and B value can be intuitive The effect of reading

Inactive Publication Date: 2010-12-22
LUOYANG BEARING RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The whole process uses an indirect method for measurement and conversion, and its operation procedures are complex, cumbersome and inefficient, and prone to cumulative errors

Method used

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  • Method for measuring axial clearance and preload clearance of back-to-back angular contact ball bearings
  • Method for measuring axial clearance and preload clearance of back-to-back angular contact ball bearings
  • Method for measuring axial clearance and preload clearance of back-to-back angular contact ball bearings

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Experimental program
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Embodiment Construction

[0020] combine image 3 , the present invention will make outer ring spacer 4, washer 1, inner diameter load block 7 and a measuring system earlier before measuring.

[0021] The inner diameter of the outer ring spacer 4 is equal to the inner diameter of the outer ring of the bearing I or bearing II, and the outer diameter of the outer ring spacer 4 is equal to the outer diameter of the outer ring of the bearing I or bearing II, and the radial opening of the outer ring spacer 4 There are two symmetrical notch slots. The outer ring spacer 4 must undergo heat treatment, and the hardness after heat treatment can reach HRC60-65. Secondly, the outer ring spacer 4 needs to be precisely ground to ensure that the parallel difference between the two ends of the outer ring spacer 4 is not greater than 1 μm. Finally, the outer ring spacer The notch of sleeve 4 should be able to pass through the two parallel right-angle probes in the measuring system smoothly.

[0022] The outer diamete...

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Abstract

The invention discloses a method for measuring the axial clearance or the preload clearance of back-to-back angular contact ball bearings, which comprises the steps of firstly manufacturing an outer ring spacer bush (4), a gasket (1), an inner diameter load block (7) and a measurement system and then correcting measurement instruments, wherein the inner ring (2) of a bearing I is arranged on the gasket, the bearing I and a bearing II are arranged on the outer ring spacer bush back to back, the inner diameter load block is arranged in the inner ring (6) of the bearing II; and during the correction of instruments, one end of each of the two equilong levers, which is provided with a right-angle measuring head, extend into an inner ring space bush through each notch groove of the inner ring spacer bush. During the measurement, the inner diameter load block of a balance weight applies axial load to the bearing I and the bearing II, the two right-angle measuring heads respectively align to the center points A and B of the bearing I and the bearing II, wherein A-B=delta, if the delta is a negative value, the bearing I and the bearing II are in axial clearance, and if the delta is a positive value, the bearing I and the bearing II are in preload clearance. The invention has the advantages of simple operation, no complicated conversion for obtaining measurement result, visually readable values A and B, and no conversion and cumulative errors.

Description

technical field [0001] The invention belongs to the technical field of bearing measurement, and in particular relates to a method for measuring axial clearance and preload clearance of back-to-back angular contact ball bearings. Background technique [0002] Angular contact ball bearings have supporting radial clearance at the time of design. Only after the angular contact ball bearings are paired and installed can they have axial clearance or preload clearance. The size of the axial clearance or preload clearance depends on The adjustment amount of the other paired angular contact ball bearing. [0003] Angular contact ball bearings have different subtle structural changes. According to the user's requirements for the use of angular contact ball bearings, axial clearance (or pre-clearance) or preload clearance can be provided for back-to-back (DB pairing type) (or preload), back-to-back means that the large end faces of paired angular contact ball bearings correspond to ea...

Claims

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Application Information

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IPC IPC(8): G01B5/14
Inventor 张中元李鹏
Owner LUOYANG BEARING RES INST CO LTD
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