A method for measuring and correcting wheel hub bearing preload
A hub bearing and pre-tightening force technology, applied in force/torque/work measuring instruments, measuring devices, instruments, etc., can solve the problems of local force bending strain, inaccurate detection results, etc., and achieve the effect of improving accuracy
Active Publication Date: 2021-10-22
HUBEI NEW TORCH SCIENCE & TECHNOLOGY CO LTD
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Problems solved by technology
[0005] Aiming at the deficiencies of the prior art, the present invention provides a method for measuring and correcting the pretightening force of the hub bearing, which has the advantages of high measurement accuracy and solves the problems caused by the local force and bending strain during the riveting of the hub bearing in the prior art. Influence, leading to inaccurate test results
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[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0027] A method for measuring and correcting the pretightening force of a wheel hub bearing, taking the wheel hub bearing model G3-725 produced by Hubei New Torch Technology Co., Ltd. as an example.
[0028] Such as figure 1 As shown, the inner flange 1 and inner ring 2 in the hub bearing are retained, the inner ring 2 is pressed into the inner flange 1 and the shaft shoulder of the inner flange 1 and the small end face of the inner ring 2 are fully contacted and fitted;
[0...
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The present invention relates to the technical field of wheel hub bearing pretightening force measurement methods, and discloses a wheel hub bearing pretightening force measurement and correction method, including the following steps: S1, retaining the inner flange and inner ring of the wheel hub bearing, and pressing the inner ring into the inner method Lan and install the strain gauge at the center of the inner hole of the inner flange; S2. Connect the strain gauge in S1 to the dynamic strain tester, fix the inner flange with the strain gauge installed, and then apply various loads to it for calibration , and record the response variable corresponding to the load; S3, perform linear regression analysis on the load and the strain variable, and obtain the regression equation. The method for measuring and correcting the pretightening force of the wheel hub bearing overcomes the influence of bending strain on the measurement through the strain gauge embedded in the center, and improves the accuracy of the measurement. Due to the use of theoretical derivation and calculation, the errors and deficiencies in the actual measurement process are analyzed, and the measurement accuracy of pretightening force is further improved by correcting the measured strain.
Description
technical field [0001] The invention relates to the technical field of a method for measuring the pretightening force of a hub bearing, in particular to a method for measuring and correcting the pretightening force of a hub bearing. Background technique [0002] The automobile hub bearing unit is an important part of automobile driving and loading, which provides precise guidance for the rotation of the automobile hub; the hub bearing unit has developed from the first generation to the third generation, and its preloading method has developed from the traditional bolt and nut preloading to the shaft. End riveting pre-tightening; The riveting pre-tightening method overcomes the problems of looseness and pre-tightening force attenuation caused by the traditional method to a certain extent, and improves the reliability and stability of the entire hub unit. [0003] During the riveting process, the riveted part of the shaft end will have a large metal plastic deformation, and th...
Claims
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IPC IPC(8): G01L5/00
CPCG01L5/0019
Inventor杨建交葛志华李江全郑为
OwnerHUBEI NEW TORCH SCIENCE & TECHNOLOGY CO LTD