机电工程技术2025，Vol.54Issue(3)：30-35,90,7.DOI:10.3969/j.issn.1009-9492.2025.03.006
联合载荷及角偏斜下微涡轮角接触球轴承打滑分析
Slip Analysis of Microturbine Angular Contact Ball Bearings under Combined Load and Angular Deflection
摘要
Abstract
Slip often occurs in the contact area between the bearing rolling body and the raceway,which often leads to the early failure of the bearing.Based on Hertzian contact theory,a pseudo-static model of bearing is established.Based on Hirano slip criterion,the slip analysis of 7000C bearing is carried out under the influence of joint load and angular deviation.The results show that the minimum axial preload exists at a certain speed and radial load,which prevents the bearing from slipping.The minimum axial preload decreases with the increase of radial load,while the minimum axial preload increases with the increase of rotational speed.As the speed increases,the slip coefficient decreases and the axial preload increases.Therefore,the slip coefficient can be increased by increasing the axial preload or reducing the speed to avoid the bearing slipping.Axial preload and radial load affect the slippage region of the bearing.The slippage region decreases with the increase of axial preload and increases with the increase of radial load.72°～108°and 252°～288°are the areas where the ball is most likely to slip.The bearing has angle deflection when it is preloaded,and the larger the angle of deflection,the larger the slip coefficient.The ball at positions 108°and 252°has the lowest slip coefficient and is most prone to slip,while the ball at position 0°has the highest slip coefficient and is least prone to slip.关键词
7000C轴承/轴向预紧力/径向载荷/角偏斜/打滑Key words
7000C bearing/axial preloading force/radial load/angular deviation/slip分类
机械制造引用本文复制引用
田旭,王宇,韩清鹏,朱瑞,吕杭原..联合载荷及角偏斜下微涡轮角接触球轴承打滑分析[J].机电工程技术,2025,54(3):30-35,90,7.基金项目
国家重点研发计划(2021YFB2011100) （2021YFB2011100）
国家自然科学基金(12172210) （12172210）
