球柱联合转台轴承摩擦力矩特性  

Friction torque characteristic of ball-roller combined turntable bearing

作　　者：张占立[1] 张开哲 王恒迪[1] 张文虎 刘延斌[1] 李云峰[1] ZHANG Zhanli;ZHANG Kaizhe;WANG Hengdi;ZHANG Wenhu;LIU Yanbin;LI Yunfeng(School of Mechatronics Engineering,Henan University of Science and Technology,Luoyang Henan 471003,China)

机构地区：[1]河南科技大学机电工程学院,河南洛阳471003

出　　处：《航空动力学报》2020年第12期2664-2672,共9页Journal of Aerospace Power

基　　金：国家自然科学基金青年科学基金(51905152);河南省自然科学基金(182300410273);国家重点研发计划重点专项(2018YFB0407304)。

摘　　要：为研究球柱联合转台轴承摩擦力矩特性,建立了轴承的力学模型,采用Newton-Raphson法对模型进行求解。分析了轴承摩擦力矩产生机理,建立了摩擦力矩计算模型,利用试验机对模型进行了试验验证,研究了不同结构参数对轴承摩擦力矩的影响。结果表明:所建立的模型可较好的实现轴承摩擦力矩预测,轴承摩擦力矩与轴向载荷、倾覆力矩和轴承转速呈正相关;减小初始轴向游隙可显著降低轴承摩擦力矩;钢球数量存在一个最优值使轴承摩擦力矩最小;沟曲率半径存在合理区间使轴承综合性能最优;适当减小保持架质量可有效降低轴承摩擦力矩。研究结果为球柱联合转台轴承的优化设计提供了理论依据。In order to study the friction torque characteristics of the ball-roller combined turntable bearing,a mechanical model of the bearing was established,and solved by the Newton-Raphson method.The mechanism of bearing friction torque was analyzed.The friction torque calculation model was established,and the model was tested and verified by using a testing machine.The effect of different structural parameters on bearing friction torque was studied.The results showed that the established model can predict the bearing friction torque well.The bearing friction torque was positively related to the axial load,overturning torque and bearing speed;the reduced initial axial clearance can significantly reduce the bearing friction torque;there was an optimal value for the number of steel balls to minimize bearing friction torque.There was a reasonable interval for the radius of groove curvature to optimize the overall performance of the bearing;appropriately reducing the mass of the cage can effectively reduce the friction torque of the bearing.The research results provide a theoretical basis for the optimal design of the ball-roller combined turntable bearing.

关 键 词：球柱联合转台轴承 力学分析 摩擦力矩 轴向游隙 轴承参数优化 

分 类 号：V249.3[航空宇航科学与技术—飞行器设计] TH133.332[机械工程—机械制造及自动化]