• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2017, Vol. 53 ›› Issue (22): 219-224.doi: 10.3901/JME.2017.22.219

• 交叉与前沿 • 上一篇    

基于滚动蠕滑理论的球轴承摩擦力矩计算方法

马子魁, 陈文华   

  1. 浙江理工大学机电产品可靠性技术研究浙江省重点实验室 杭州 310018
  • 收稿日期:2016-12-05 修回日期:2017-06-09 出版日期:2017-11-20 发布日期:2017-11-20
  • 通讯作者: 陈文华(通信作者),男,1963年出生,博士,教授,博士研究生导师。主要研究方向为可靠性设计、试验与统计分析。E-mail:chenwh@zstu.edu.cn
  • 作者简介:马子魁,男,1978年出生,博士,讲师。主要研究方向为可靠性设计、滚动轴承摩擦学。E-mail:mazikui@gmail.com
  • 基金资助:
    国家自然科学基金资助项目(51105342)。

Friction Torque Calculation Method of Ball Bearings Based on Rolling Creepage Theory

MA Zikui, CHEN Wenhua   

  1. Zhejiang Province's Key Laboratory of Reliability Technology for Mechanical and Electronic Products, Zhejiang Sci-Tech University, Hangzhou 310018
  • Received:2016-12-05 Revised:2017-06-09 Online:2017-11-20 Published:2017-11-20

摘要: 基于滚动接触蠕滑理论将球轴承滚动体与滚道的接触问题分解为法向赫兹接触子问题和切向粘滑子问题,提出了基于滚动接触蠕滑理论的球轴承摩擦力矩计算方法,揭示了球轴承滚动体相对内外滚道的滚滑粘着运动特性,解决了球轴承滚动体运动姿态难以确定的问题,为固体润滑/干接触条件下球轴承摩擦力矩的准确计算提供了理论依据。在轴向载荷作用下对采用PTFE保持架全陶瓷Si3N4/GCr15/不锈钢球轴承进行摩擦力矩试验,试验结果与计算结果对比表明,球轴承蠕滑分析模型能够得到比较准确的摩擦力矩计算结果,比不考虑滚动接触区粘滑效应的切片离散化模型更准确。

关键词: 滚动接触, 摩擦力矩, 球轴承, 蠕滑理论

Abstract: The creepage model for ball bearings is formulated by decoupling the ball/raceway contact into the normal contact problem and tangential creepage problem. The normal contact problem can be solved by Herzian contact theory and the tangential problem by rolling contact creepage theory. The attitude of balls is determined solely by the creepage and normal contact forces between the balls and inner/outer raceways. This model can be used to calculate running behaviors such as friction torque of ball bearings specially under solid lubricant-lubricated or dry contact conditions. Firction torques of three types of deep-groove ball bearings respectively made of different materials such as ceramic, GCr15 and stainless steel are measured and evaluated against calculated results. The results show that this model can give a more accurate result than traditional method with sliced contact areas.

Key words: ball bearings, creepage theory, friction torque, rolling contact

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