Abstract
A new gear tooth modification model of planetary gear system was established by considering the characteristics of tooth longitudinal crowning modification and tooth profile modification. Using this model, the influences of modification parameters on the time-varying mesh stiffness, transmission error, contact spots and dynamic response of the planetary gear system were analyzed through numerical analysis. The results show that tooth profile modification can effectively restrain the mesh stiffness sudden variation in the single and double tooth alternation of both the internal and external mesh pairs, and significantly decrease the transmission error fluctuation. However, longitudinal crowning modification has no marked influence on mesh stiffness sudden variation or transmission error fluctuation. The tooth profile modification can significantly reduce the sudden variation of tooth surface load during gear mesh course. Longitudinal crowning modification can make the tooth surface load evenly distributed in tooth width direction. When the external meshing pairs are modified at the tooth profile individually, the magnitude values of main response resonance peaks of internal meshing pairs have a great reduction, but those values of external meshing pairs change slightly. In the case of tooth profile modification of the internal meshing pairs, the phenomenon is reversed. By contrast with tooth profile modification, longitudinal crowning modification has little influence on the resonance peaks of internal and external meshing pairs.
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Acknowledgments
The authors would like to thank Project Nos. 2018YFB 2001300 supported by the National Key R&D Projects of China, Nos. 51775060 supported by the National Natural Science Foundation of China, Nos. cstc2018jcyjAX0087 supported by the Chongqing Research Program of Frontier and Application Foundation, and Nos. cstc2017rgzn-zdyfX0038 of Key Research and Development Project in Chongqing.
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Recommended by Associate Editor Hyeong-Joon Ahn
Xiangyang Xu received his B.S. in mechanical engineering from Zhengzhou University, Zhengzhou, China, in 2004. He then received his M.S. and PhD. in mechanical engineering from Chongqing University, Chongqing, China, in 2009 and 2012. He has been an Associate Professor at Chongqing Jiao-tong University since 2014. His research interests include mechanical transmission theory, experiments and its application.
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Xu, X., Fan, X., Diao, P. et al. An investigation on the influence of modification parameters on transmission characteristics of planetary gear system. J Mech Sci Technol 33, 3105–3114 (2019). https://doi.org/10.1007/s12206-019-0605-6
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DOI: https://doi.org/10.1007/s12206-019-0605-6