Precision control mechanism of angular contact ball bearing based on error transfer

Abstract Angular contact ball bearing is one of the most classic types of rolling bearings. In this paper, the relationship between the size of each component and the overall structural parameters of the finished bearing is analyzed for the high-speed precision angular contact ball. The error transfer law between the accuracy of the components and the accuracy of the finished structural parameters is obtained, and the influence coefficient of the size of the key parts on the overall structural parameters of the finished bearing is quantitatively evaluated and estimated. In conjunction with the process index of the equipment processing capacity being determined and optimized, a numerical analysis model based on the error transfer law is built for the accurate control of the overall structural parameters. The results show that the diameter (Dw) of the steel ball has the most significant effect on the accuracy of the structural parameters, and the curvature radius (Ri and Re) of the inner and outer ring grooves have the weakest effect. For example, the influence coefficient of the diameter of the steel ball on the contact angle is as high as 6.996, while the groove curvature radius is only 0.81; Finally, the accuracy and practicability of the accuracy control analysis model are verified by the typical model of high-speed precision angular contact ball bearing H7008 produced by a company.