Mechanics & Industry
Volume 22, 2021
|Number of page(s)||11|
|Published online||06 May 2021|
Load analysis and deformation research of the flexible bearing based on a three-force ring superposition method
School of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200444, PR China
2 Beijing CTKM Harmonic Drive Co., Ltd, Beijing 101318, PR China
* e-mail: firstname.lastname@example.org
Accepted: 5 April 2021
The flexible bearing is a key component of harmonic reducer enabling the flexspline to generate a controllable elastic deformation. Its performance and life will significantly affect the normal operation of harmonic reducer. In order to improve the life and the working performance of the flexible bearing, the calculation of its load distribution is necessary. Based on the theory of thin-walled ring, the relationship between radial deformation and load of three-force ring was derived. Then a superposition model of three-force ring was developed to calculate rapidly the load distribution of flexible bearings with elliptical cams in harmonic reducers. The validity of the proposed model was proved by comparing with a static analysis model. In this paper, the influences of ball number and external load on the load distribution, radial deformation and bending normal stress of outer ring were investigated by three-force ring superposition method. Based on the deformation of three-force ring, the deformation characteristics and bending normal stress distribution of outer ring of the flexible bearing were analyzed, and several regular results were found.
Key words: Load analysis model / flexible bearing / load distribution / stress calculation / radial deformation
© Y. Yu et al., Published by EDP Sciences 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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