Prediction method of radial runout of outer ring of cylindrical roller bearing under load constraint

Abstract

The invention relates to a method for predicting the radial runout of the outer ring of a cylindrical roller bearing under load constraints. The method includes: 1) obtaining bearing parameters; 2) rotating the outer ring by a set step angle; 3) calculating each roller under the bearing The coordinates of the center of the roller when it is in contact with the inner ring; 4) Calculate the coordinates (X0, Y0) of the center of the outer ring when the bearing part is an ideal circle under the radial load; 5) Determine whether the roller is in contact with the outer ring, and obtain Contact point coordinates; 6) Obtain the reaction force direction of the outer ring and the outer ring raceway force balance equation; 7) Solve the outer ring force balance equation to obtain the new center coordinates (X1, Y1) of the outer ring; 8) Compare ( X0, Y0) and (X1, Y1), judge whether (X1, Y1) converges, if not, set X0=X1, Y0=Y1, go to step 7), otherwise, according to (X1, Y1), get a rotation Set the radial runout value of the outer ring under the step angle. The method of the invention realizes the radial runout prediction of the outer ring of the cylindrical roller bearing under load constraints.

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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