,Friction torque characteristic of ball-roller combined turntable bearing,
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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。Abstract: 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.
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[1] PALMGREN A.Ball and roller bearing engineer[M].3rd ed.Philadelphia,US:Svenska Kullager-Fabriken (SKF) Industries Incorporration,1959. [2] SNARE B.Rolling resistance in lightly loaded bearings[J].The Ball Bearing Journal,1968(152):3-8. [3] MASAYUKI K,HIROYUKI O.Running torque of ball bearings with polymer lubricant[J].Journal of Tribology,2008,130(4):041507.1-041507.10. [4] TOWNSEND D P,ALLEN C W,ZARATSKY E V.Study of ball bearing torque under elastohydrodynamic lubrication[R].Cleveland,Ohio,USA:National Aeronautics and Space Administration,Lewis Research Center,1973. [5] 王小刚,周琳,赵国强,等.一种低扭矩高刚性推力球和圆柱滚子组合转盘轴承[J].轴承,2015(10):1-3. WANG Xiaogang,ZHOU Lin,ZHAO Guoqiang,et al.A slewing bearings combined with thrust balls and cylindrical roller with low torque and high rigidity[J].Bearing,2015(10):1-3.(in Chinese) [6] 张葵,李建华.球轴承摩擦力矩的分析计算[J].轴承,2001(1):8-11. ZHANG Kui,LI Jianhua.Anaysis and calculation of friction torque of ball bearing[J].Bearing,2001(1):8-11.(in Chinese) [7] 徐永智,夏新涛.航天轴承摩擦力矩的参数-非参数融合性分析[J].航空动力学报,2014,29(9):2129-3135. XU Yongzhi,XIA Xingtao.Analysis of parameter-nonparametric fusion on space bearing friction moment[J].Journal of Aerospace Power,2014,29(9):2129-3135.(in Chinese) [8] 王燕霜,武燕.变桨轴承空载摩擦力矩研究[J].机械传动,2012,36(11):32-35. WANG Yanshuang,WU Yan.Study on friction torque of blade bearings without load[J].Journal of Mechanical Transmission,2012,36(11):32-35.(in Chinese) [9] 刘静.风电变桨轴承摩擦力矩的测量[J].轴承,2011(6):42-44. LIU Jing.Measurement of friction torque of wind power variable paddle bearing[J].Bearing,2011(6):42-44.(in Chinese) [10] 张占立,周鹏举,左朋辉,等.负游隙对四点接触转盘球轴承摩擦力矩影响研究[J].机床与液压,2018,46(1):56-58. ZHANG Zhanli,ZHOU Pengju,ZUO Penghui,et al.Study of negative axial clearance affected friction torque of four contact-point slewing ball bearing[J].Machine Tool and Hydraulics,2018,46:(1):56-58.(in Chinese) [11] 张占立,周鹏举,李文博,等.YRT转台轴承摩擦力矩特性研究[J].兵工学报,2019,40(7):1495-1502. ZHANG Zhanli,ZHOU Pengju,LI Wenbo,et al.Study of friction torque characteristics of YRT rotary table bearing[J].Acta Armamentarii,2019,40(7):1495-1502.(in Chinese) [12] 邓四二,贾永川.推力球轴承摩擦力矩特性研究[J].兵工学报,2015,36(9):1615-1623. DENG Sier,JIA Yongchuan.Friction Torque Characteristics of Thrust Ball Bearings[J].Acta Armamentarii,2015,36(9):1615-1623.(in Chinese) [13] 邓四二,盛明杰,邓凯文,等.双列调心滚子轴承摩擦力矩的特性[J].航空动力学报,2017,32(7):1666-1675. DENG Sier,SHENG Mingjie,DENG Kaiwen,et al.Friction torque of double-row spherical roller bearings[J].Journal of Aerospace Power,2017,32(7):1666-1675.(in Chinese) [14] 邓四二,华显伟,张文虎,等.陀螺角接触球轴承摩擦力矩波动性分析[J].航空动力学报,2018,33(7):1713-1724. DENG Sier,HUA Xianwei,ZHANG Wenhu,et al.Analysis on friction torque fluctuation of angular contact ball bearing in gyromotor[J].Journal of Aerospace Power,2018,33(7):1713-1724.(in Chinese) [15] 宁峰平,樊晓琴,陈然,等.交变温度对航天轴承摩擦力矩的影响机理[J].农业工程学报,2018,34(8):85-92. NIN Fengping,FAN Xiaoqin,CHEN Ran,et al.Influence mechanism of alternating temperature on friction torque of aerospace bearings[J].Transactions of the Chinese Society of Agricultural Engineering,2018,34(8):85-92.(in Chinese) [16] 胡华君,潘博,孙京.航天器驱动机构轴系摩擦力矩建模与分析研究[J].机械工程学报,2017,53(11):75-80. HU Huajun,PAN Bo,SUN Jing.Friction torque modeling of spacecraft driving mechanism shafting[J].Journal of Mechanical Engineering,2017,53(11):75-80.(in Chinese) [17] 陆静,洪荣晶,陈捷,等.四点接触球转盘轴承中几何参数对摩擦力矩的影响[J].轴承,2013(5):1-6. LU Jing,HONG Rongjing,CHEN Jie,et al.Effect of geometry parameters on friction torque of four point contact ball slewing bearing[J].Bearing,2013(5):1-6.(in Chinese)
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