Structural Engineering and Mechanics

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No-backlash characteristics analysis of a cycloidal ball planetary transmission under axial pre-tightening

  • Yang, Ronggang (College of Mechanical and Electrical Engineering, Wenzhou University) ;
  • Wang, Naige (College of Mechanical and Electrical Engineering, Wenzhou University) ;
  • Xiang, Jiawei (College of Mechanical and Electrical Engineering, Wenzhou University)
  • Received : 2021.05.06
  • Accepted : 2021.11.16
  • Published : 2022.02.25
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Abstract

Cycloidal ball planetary transmission (CBPT) has many applications as precision reducer, such as precision machinery and automation drive systems etc. The traditional analytical model of CBPT cannot accurately describe the change of the normal force of meshing points, and thus cannot describe the precise transmission process of meshing pairs. In the paper, a method for deriving the normal force equation is put forward by using the non-linear relationship between force and deformation in elastic mechanics. The two-point contact analytical models of all the meshing pairs are established to obtain the micro-displacement analytical model of CBPT under axial pre-tightening. Then, the non-real-time two-point contact analytical models of all the meshing pairs are further constructed to obtain the normal force expression to determine the critical compression coefficients. Experimental investigations are performed to verify the analytical model using the critical compression coefficients.

Keywords

Acknowledgement

Supported by the National Natural Science Foundation of China (no.51275440), the Wenzhou Basic Industrial Technology Project of China (Grant Nos. ZG2019032 and G20190015), the Zhejiang Special Support Program for High-level Personnel Recruitment of China (No. 2018R52034).

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