Vibration Prediction and Optimization of Aeronautical Angular Contact Ball Bearings Considering Surface Waviness

Surface waviness is one of the most important factors affecting bearing vibration. How to effectively control waviness in actual production is a technical challenge in bearing mass production at present. This study established a ball bearing vibration analysis model based on the relationship between raceway waviness and bearing vibration, analyzed the contact between bearing balls and raceway waviness, studied the influence of waviness amplitude A, order nv, ball diameter Dw and rotational speed v on rolling bearing vibration, and given a bearing vibration prediction method and optimization control model based on waviness amplitude and order. Taking the angular contact ball bearing 7008/P4 as an example, experimental verification was carried out with different waviness states in four processes: coarse grinding, fine grinding, ultra-precision and polishing. The error between the model calculation results and the actual test results does not exceed 5%, which had good accuracy and practicality. The results shown that the amplitude of waviness had the greatest influence on vibration, followed by the order of waviness, and the influence was more significant with the increase of rotational speed.