• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2018, Vol. 54 ›› Issue (9): 9-16.doi: 10.3901/JME.2018.09.009

• 特邀专栏:航天先进制造技术专栏 • 上一篇    下一篇

角接触球轴承-转子加减速过程动力学分析

王云龙1, 王文中1, 卿涛2, 张韶华2   

  1. 1. 北京理工大学机械与车辆学院 北京 100081;
    2. 北京控制工程研究所精密转动和传动机构长寿命技术北京市重点实验室 北京 100094
  • 收稿日期:2017-06-30 修回日期:2017-12-21 出版日期:2018-05-05 发布日期:2018-05-05
  • 通讯作者: 卿涛(通信作者),男,1978年出生,博士,研究员。主要研究方向为空间惯性执行机构技术等。E-mail:qingtao01@126.com
  • 作者简介:王云龙,男,1991年出生,博士研究生。主要研究方向为滚动轴承动力学分析等。E-mail:bitwyl2013@163.com;王文中,男,1971年出生,博士,教授。主要研究方向为润滑接触问题的建模和实验、滚动轴承动力学建模与试验等。E-mail:wangwzhong@bit.edu.cn;张韶华,男,1985年出生,博士,工程师。主要研究方向为空间摩擦学、薄膜润滑等。E-mail:fly8511@163.com
  • 基金资助:
    国家自然科学基金资助项目(U1637205,51675046)。

Dynamic Analysis of Angular Contact Ball Bearing-rotor System during Start up and Shut Down

WANG Yunlong1, WANG Wenzhong1, QING Tao2, ZHANG Shaohua2   

  1. 1. School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081;
    2. Beijing Key Laboratory of Long-life Technology of Precise Rotation and Transmission Mechanisms, Beijing Institute of Control Engineering, Beijing 100094
  • Received:2017-06-30 Revised:2017-12-21 Online:2018-05-05 Published:2018-05-05

摘要: 角接触球轴承的动态性能对轴承-转子系统的性能至为关键。考虑轴承各元件的相互作用建立了角接触球轴承-转子系统的动力学分析模型,模型中钢球与滚道间的摩擦力采用弹流润滑理论计算,钢球与保持架间的作用等效为高刚度弹簧,引导套圈与保持架间摩擦力采用短轴轴承理论计算,基于四阶Runge-Kutta实现了动力学模型的快速求解。研究了润滑油的密度和粘度、引导方式和轴向预紧力对轴承启动加速和停止减速过程以及打滑的影响。结果表明:高密度和大粘度润滑油将使启动加速变慢而使停止减速变快;内圈引导时轴承的启动加速最慢;轴向预载不足将导致轴承在启动及稳定运转阶段产生严重打滑。

关键词: 动力学, 加减速过程, 角接触球轴承

Abstract: Angular contact ball bearing significantly affects the performance of bearing-rotor system. A dynamic model for bearing-rotor system is established with comprehensive consideration of interactions between bearing elements. The traction force between ball and raceways is evaluated based on elastohydrodynamic lubrication theory; the interaction between ball and cage is modeled as the compression of spring with high rigidness, while Petroff's bearing model is utilized to calculate the friction force between guiding ring and cage. The dynamic model is efficiently solved based on the fourth order Runge-Kutta algorithm. The effects of lubricant density and viscosity, guide mode of cage and axial preload on the process of startup and stop are investigated based on the developed dynamic model. The results show that, the lubricant with high density and viscosity will delay the startup process but accelerate the shutdown process; inner ring guide mode will make the startup process of bearing slow; when the axial preload is not large enough, there is sever skidding between ball and raceways during startup and steady state running process.

Key words: angular contact ball bearing, dynamic model, process of startup and stop

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