Precision bearing grinding diamond roller dressing process optimization method

Abstract

The invention relates to a precision bearing grinding diamond roller dressing process optimization method. The method comprises the steps that firstly, diamond roller dressing parameters are determined, the rotating speed of a main shaft is determined based on a frequency response function, the frequency response function of the main shaft is obtained by knocking the main shaft by a force hammer,an optimal set of frequency is found according to a frequency response function graph, and the main shaft rotating speed is obtained through conversion; then the dressing speed ratio is determined based on a dressing trajectory, and the speed ratio of a grinding wheel and a rolling wheel is determined according to the trajectory equation and the radius of curvature of the grinding wheel and the rolling wheel; the rolling wheel feeding speed is determined based on an interference angle sigma, the interference angle is introduced as the dressing comprehensive physical quantity, and the obtainedspeed ratio is substituted into the interference angle to determine the feeding speed; and finally, a mathematical model and the parameter optimization are established, the mathematical model of the grinding force and the grinding power is established, and the dressing process is optimized by converting the grinding power measured by a power sensor into the grinding force. According to the method,the parameters are determined by adopting the theory, the parameters are optimized according to the machining condition, and the workpiece surface quality is guaranteed.

Description

technical field [0001] The invention relates to a dressing process for grinding diamond rollers for precision bearings, in particular to an optimization method for dressing process for grinding diamond rollers for precision bearings Background technique [0002] Bearing rings are important parts of rolling bearings. Due to the many processing steps, complex processes, and high processing accuracy requirements for the rings, the processing quality of the rings has an important impact on the accuracy, service life and performance of the bearing. Bearings have high requirements on their surface quality during processing, and once unqualified, they will not be allowed to enter the assembly process. Therefore, the quality of the bearing ring is particularly important. Grinding is the most important processing procedure of bearing rings, which determines the machining accuracy and running performance of bearing rings. Grinding of rings is affected by many state parameters such as...

AI Technical Summary

Problems solved by technology

In the dressing process, since the bearing ring has multiple raceways, it is necessary to rotate the curvature of multiple grooves when using the diamond pen to dress the grinding wheel, so that the speed of each grinding point is inconsistent when the grinding wheel is ground after dressing, resulting in different rings after grinding. The surface roughness of the points will be different, which cannot meet the surface quality requirements

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