推力滚针轴承摩擦力矩特性研究

doi:10.3969/j.issn.1000-1093.2015.07.026

兵工学报 ›› 2015, Vol. 36 ›› Issue (7): 1347-1355.doi: 10.3969/j.issn.1000-1093.2015.07.026

推力滚针轴承摩擦力矩特性研究

邓四二^1,2，李猛¹，卢羽佳¹，代彦宾¹

(1.河南科技大学机电工程学院河南洛阳 471003; 2.浙江兆丰机电股份有限公司，浙江杭州 311232)

收稿日期:2014-10-26 修回日期:2014-10-26 上线日期:2015-09-21
通讯作者: 邓四二 E-mail:dse@haust.edu.cn
作者简介:邓四二（1963—）男，教授，博士生导师
基金资助:
国家“十二五”科技攻关项目(JPPT-125-171)；河南省科技创新人才计划项目(144200510020)

Study of Friction Torque of Needle Roller Thrust Bearings

DENG Si-er^1,2, LI Meng¹, LU Yu-jia¹, DAI Yan-bin¹

(1.School of Mechatronics Engineering, Henan University of Science and Technology, Luoyang 471003, Henan, China;2Zhejiang ZhaoFeng Mechanical and Electronic Co., Ltd., Hangzhou 311232, Zhejiang China)

Received:2014-10-26 Revised:2014-10-26 Online:2015-09-21
Contact: DENG Si-er E-mail:dse@haust.edu.cn

摘要/Abstract

摘要： 基于滚动轴承动力学理论，建立了推力滚针轴承动力学微分方程，采用精细积分法和预估-校正Adams-Bashforth-Moulton多步法相结合的算法求解其动力学微分方程，在此基础上建立了推力滚针轴承摩擦力矩数学模型。研究了工况参数和结构参数对推力滚针轴承摩擦力矩特性的影响，结果表明：推力滚针轴承摩擦力矩主要分量为滚针-滚道间滑动摩擦，在高速时，保持架-滚针间摩擦也成为主要分量，且较小的兜孔间隙有利于降低轴承摩擦力矩；推力滚针轴承存在一个最佳转速使用范围，使轴承摩擦力矩最小；轴承摩擦力矩与轴向载荷呈正比，且比例系数随着转速的增大而减小；滚针修缘可明显降低轴承摩擦力矩，比较其修缘类型，全凸圆弧修缘滚针更有利于降低轴承摩擦力矩；随着滚针个数和有效长度的增大，轴承摩擦力矩随之增大；随着滚针直径的增大，轴承摩擦力矩减小；应合理优化这些参数，以降低轴承摩擦力矩。

关键词: 机械学, 推力滚针轴承, 摩擦力矩, 动力学, 滚针修缘

Abstract: The dynamic differential equations of needle roller thrust bearings are established based on the dynamic theory of rolling bearings. The precise integration method and the predicting-correcting Adams-Bashforth-Moulton multistep method are used to solve the equations, and the friction torque mathematic models of needle roller thrust bearings are built. The influences of working conditions and structural parameters on the friction torque of needle roller thrust bearings are investigated. The results show that the slip friction between roller and raceway is main component of the friction torque of needle roller thrust bearings.the friction between cage and roller also becomes the main component at high speed , and a small pocket clearance is in favor of reducing the friction torque. An optimal speed can be selected, which makes the friction the smallest. The friction torque is in direct proportion to the axial load, and the proportional coefficient decreases with the rise of rotating speed of bearings. The roller profile modification can reduce the friction torque evidently, the full arc profile modification is the most propitious to reduce the friction torque compared to crowned shapes.the friction torque increases with the rise of roller number and effective length , and the friction torque decreases with the rise of the roller diameter. These parameters should be rationally optimized to reduce the friction torque.

Key words: mechanics, needle roller thrust bearing, friction torque, dynamics, roller profile modification

中图分类号:

TH133.33

邓四二，李猛，卢羽佳，代彦宾. 推力滚针轴承摩擦力矩特性研究[J]. 兵工学报, 2015, 36(7): 1347-1355.

DENG Si-er, LI Meng, LU Yu-jia, DAI Yan-bin. Study of Friction Torque of Needle Roller Thrust Bearings[J]. Acta Armamentarii, 2015, 36(7): 1347-1355.

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推力滚针轴承摩擦力矩特性研究

Study of Friction Torque of Needle Roller Thrust Bearings

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