• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2021, Vol. 57 ›› Issue (7): 68-77.doi: 10.3901/JME.2021.07.068

• 机械动力学 • 上一篇    下一篇

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RV减速器用新型交错滚子主轴承承载能力分析与试验研究

黄健, 李朝阳, 陈兵奎   

  1. 重庆大学机械传动国家重点实验室 重庆 400044
  • 收稿日期:2020-05-05 修回日期:2020-12-31 出版日期:2021-04-05 发布日期:2021-05-25
  • 通讯作者: 李朝阳(通信作者),男,1977年出生,博士,副教授,硕士研究生导师。主要研究方向为精密传动及系统。E-mail:li_zhaoyang77@cqu.edu.cn
  • 作者简介:黄健,男,1992年出生,博士研究生。主要研究方向为轴承和精密传动。E-mail:20150701010@cqu.edu.cn
  • 基金资助:
    国家自然科学基金(51775059)和国家重点研发计划(2017YFB1300700)资助项目。

Analysis and Experimental Study on Static Load Capacity of a New Radial-axial Roller Bearing Integrated in RV Reducer

HUANG Jian, LI Chaoyang, CHEN Bingkui   

  1. State Key Laboratory of Mechanical Transmissions, Chongqing University, Chongqing 400044
  • Received:2020-05-05 Revised:2020-12-31 Online:2021-04-05 Published:2021-05-25

摘要: 以一种集成于RV减速器针齿壳和行星架输出机构的交错滚子主轴承为研究对象,综合考虑其在轴向载荷、径向载荷和倾覆力矩综合作用下的变形协调条件,建立新型交错滚子主轴承的静力学模型,给出了新型一体式设计的交错滚子主轴承承载能力的精确计算方法,通过与有限元模型计算结果进行比较,验证了静力学模型的正确性;针对RV减速器主轴承的服役工况,综合考虑轴向游隙与径向游隙,分析了交错滚子轴承的载荷分布与承载能力特性,分析结果表明外加载荷下轴向游隙对许用倾覆力矩影响较大,而径向游隙对许用径向载荷影响较大;试制一体化交错滚子轴承支撑结构的新型RV减速器,对其性能指标进行了试验测试,试验结果表明,采用交错滚子主轴承结构的新型RV减速器在承受扭矩输出的同时,亦可承受较大的轴向载荷和倾覆力矩,且更有利于提升减速器的精度保持性,降低扭转刚度和回差的衰减。研究成果可为RV减速器的选型与设计提供理论基础。

关键词: RV减速器, 主轴承, 一体化交错滚子轴承, 载荷分布, 承载能力

Abstract: A new type of radial-axial bearing integrated in the housing and output support mechanism of RV reducer is analyzed. Comprehensive consideration of the deformation compatibility conditions of the bearing under axial, radial loads, and moment loads, the static load model of the bearing is established. An accurate calculation method of the static load capacity of the bearing is established, too. The static model is verified by comparing the results with that calculated by finite element model. Considering the service condition of the bearings, the load distribution and static load capacity characteristics of the new bearing with different axial and radial clearances are analyzed. The results show that the allowable overturning moment of the bearing is significantly affected by axial clearance, while the allowable radial load is significantly affected by radial clearance. Furthermore, a new type of RV reducer with the integrated radial-axial roller bearing is trial-produced. The performance of the reducer is tested and the results show that the new RV reducer can not only withstand output torque but also withstand large axial loads and overturning moments. The new bearing is beneficial to improve the precision retention of the reducer and reduce the attenuation of torsional stiffness and backlash. The research can provide a theoretical basis for the selection and design of RV reducers.

Key words: RV reducer, main bearing, radial-axial bearing, load distribution, static load capacity

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