Outer ring radial run-out prediction method of cylindrical roller bearing under load constraint

Abstract

The invention relates to an outer ring radial run-out prediction method of a cylindrical roller bearing under load constraint. The outer ring radial run-out prediction method comprises the steps of: 1) acquiring bearing parameters; 2) rotating an outer ring by a set step-length angle; 3) calculating roller circle center coordinates of each roller under a bearing when the roller is in contact with an inner ring; 4) calculating outer ring circle center coordinates (X0, Y0) when a bearing part is an ideal circle under the action of a set radial load; 5) judging whether the roller is in contact with the outer ring and acquiring coordinates of a contact point; 6) acquiring a direction of a bearing reaction applied on the outer ring and a force balance equation of an outer ring raceway; 7) calculating an outer ring force balance equation to obtain new circle center coordinates (X1, Y1) of the outer ring; 8) and comparing the (X0, Y0) with the (X1, Y1), judging whether the (X1, Y1) are convergent, if not, enabling that X0=X1, Y0=Y1 and jumping to the step 7), otherwise, acquiring a radial run-out value of the outer ring rotated by the set step-length angle. The outer ring radial run-out prediction method achieves the outer ring radial run-out prediction of the cylindrical roller bearing under load constraint.

Description

technical field [0001] The invention relates to the technical field of prediction methods for motion accuracy of cylindrical roller bearings, in particular to a method for predicting radial runout of outer rings of cylindrical roller bearings under load constraints. Background technique [0002] The radial runout prediction method of the cylindrical roller bearing outer ring under load constraints is to predict the radial runout and its history of the bearing outer ring under load based on the known or given shape error of the bearing element. [0003] For rolling bearings with outer ring rotation, the radial runout of the outer ring is one of the key parameters to measure the dynamic performance of the bearing. The runout history can better show more dynamic characteristics of the rotation accuracy during the rotation of the bearing. At present, the existing radial runout measurement methods of cylindrical roller bearings can only measure the assembled bearings, and obtain...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a method for predicting the radial runout of the outer ring of a cylindrical roller bearing under load constraints, so as to solve the problem that the existing prediction method for the radial runout of the outer ring of the bearing cannot predict the known or given bearing inner ring raceway, outer ring raceway and Radial runout of the outer ring of the bearing under load constraints and its history when the roller surface is geometrically inaccurate

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