Dynamic stability of cages in high-speed tapered roller bearings with grease lubrication

被引：0
|
作者：
Wu Z. [1 ]
Xu Y. [1 ]
Deng S. [2 ]
Cao D. [1 ]
机构：
[1] School of Mechatronical Engineering, Northweastern Polytechnical University, Xi'an
[2] School of Mechatronical Engineering, Henan University of Science and Technology, Luoyang
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2019年 / 38卷 / 10期
关键词：
Cage; Dynamic stability; Elastohydrodynamic lubrication(EHL); Grease lubrication; Tapered roller bearing;
D O I：
10.13465/j.cnki.jvs.2019.10.008
中图分类号：
学科分类号：
摘要：
The multi-body contact between the cage and bearing parts was analyzed based on the theory of grease elastohydrodynamic lubrication and squeeze film lubrication. The dynamic model of a tapered roller bearing cage was established, considering the equivalent stiffness and damping of lubricant film. The fourth order Runge-Kutta method was used to calculate and analyse the influences of speed, load and preload on the cage dynamic characteristics, and then the dynamic stability of nylon, steel and copper cages was compared and analyzed. The results show that the contact force between the cage and guide ring is much greater than the pocket contact force, and the sliding rate of the cage is lower than that of the roller even in running state. The sliding rate of cage and roller increases with the speed increasing, and decreases with the increase in load or preload. The smaller the pocket clearance, the better the dynamic stability of the cage, and the smaller the pocket contact force. The smaller the guiding surface clearance, the worse the dynamic stability of the cage, but the contact force between the cage and guiding surface is reduced. In the analysis range of bearing rotational speed, the dynamic stability of the nylon cage and copper cage increases with the increase in bearing rotational speed, and the stability of the steel cage is more inferior than that of the nylon cage and copper cage at high speed. © 2019, Editorial Office of Journal of Vibration and Shock. All right reserved.
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页码：49 / 57
页数：8
相关论文
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