Journal of South China University of Technology (Natural Science Edition) ›› 2017, Vol. 45 ›› Issue (2): 66-74.doi: 10.3969/j.issn.1000-565X.2017.02.010

• Mechanical Engineering • Previous Articles     Next Articles

Analysis of Meshing Properties of Composite Cycloid Planetary Driving with Small Teeth Difference

SHI Wan-kai XU Lang HAN Zhen-hua CHANG Shuai   

  1. State Key Laboratory of Mechanical Transmission,Chongqing University 400044,Chongqing,China
  • Received:2016-06-12 Revised:2016-08-24 Online:2017-02-25 Published:2016-12-31
  • Contact: 石万凯( 1968-) ，男，博士，教授，主要从事机械创新设计理论与方法、齿轮传动润滑与表面工程、传动失效机理研究． E-mail:wankai_shi@cqu.edu.cn
  • About author:石万凯( 1968-) ，男，博士，教授，主要从事机械创新设计理论与方法、齿轮传动润滑与表面工程、传动失效机理研究．
  • Supported by:
    Supported by the National Program on Key Basic Research Project of China( 973 Program) ( 2014CB046304 )and the National Natural Science Foundation of China( 51675061)

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Abstract:

By using the composite cycloid with good adjustable geometric feature as the internal gear tooth profile and on the basis of differential geometry and gear conjugate engagement theory,a meshing equation and a conjugate profile equation of composite cycloid planetary driving with small teeth difference are established,and the line of action,the contact ratio,the mesh boundary as well as the non-undercutting condition are all derived.Then,the induced normal curvature and the pressure angle are analyzed,and the influence of tooth profile adjustment coefficient on the pressure angle is discussed.Finally,a three-dimension solid model of the composite cycloid gear pairs is established,and a dynamic simulation is performed to reveal the meshing relationship as well as the transmission efficiency under certain conditions.The results show that the composite cycloid planetary driving with small teeth difference may result in excellent meshing properties such as multi-teeth meshing,small pressure angle,small induced normal curvature and high transmission efficiency.

Key words: composite cycloid, small teeth difference, planetary transmission, engagement theory, meshing properties

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