扭矩传感器校准仪轴承摩擦力矩特性研究  

Friction Torque Characteristic of Ball-roller Combined Turntable Bearing

作　　者：刘琨 胡豪 张琳琳 马美莲 王先霞 LIU Kun;HU Hao;ZHANG Linlin;MA Meilian;WANG Xianxia(Luoyang Xiyuan Vehicle and Power Test Institute Co.,Ltd.,Luoyang 471039,China)

机构地区：[1]洛阳西苑车辆与动力检验所有限公司,河南洛阳471039

出　　处：《拖拉机与农用运输车》2023年第1期19-23,共5页Tractor & Farm Transporter

基　　金：国家自然科学基金青年科学基金资助项目(No.51905152);河南省自然科学基金资助项目(No.182300410273);国家重点研发计划重点专项(2018YFB0407304)

摘　　要：为提高扭矩传感器校准仪的校准精度,建立校准仪所用深沟球轴承摩擦力矩计算模型,在上位机程序中对轴承摩擦力矩产生的误差进行补偿,利用试验机对补偿前后校准仪测量精度进行对比,研究了不同轴承结构参数对摩擦力矩的影响。结果表明,摩擦力矩补偿后轴承校准仪测量精度明显提高。轴承摩擦力矩随钢球个数增加而增大,随内外沟曲率半径系数降低而减小,随轴承径向游隙增加而减小。研究结果提出了一种提高扭矩传感器校准仪校准精度的方法,并为深沟球轴承低摩擦优化设计提供了理论依据。In order to improve the calibration accuracy of the torque sensor calibrator,a calculation model for the friction torque of the deep groove ball bearing used in the calibrator was established,and the error generated by the bearing friction torque was compensated in the host computer program.By contrast,the influence of different bearing structure parameters on the friction torque is studied.The results show that the measurement accuracy of the bearing calibrator is significantly improved after friction torque compensation.The friction torque of the bearing increases with the increase of the number of steel balls,decreases with the decrease of the curvature radius coefficient of the inner and outer grooves,and decreases with the increase of the bearing radial clearance.The research results propose a method to improve the calibration accuracy of the torque sensor calibrator,and provide a theoretical basis for the low-friction optimization design of deep groove ball bearings.

关 键 词：扭矩传感器校准仪 深沟球轴承 摩擦力矩 摩擦补偿 径向游隙 

分 类 号：TH133.332[机械工程—机械制造及自动化]