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Dynamic Analysis and Reliability Evaluation for an Eccentric Speed Reducer Based on Fem

Published online by Cambridge University Press:  17 January 2020

Y. T. Tsai Open the ORCID record for Y. T. Tsai [Opens in a new window]  and
K. H. Lin
Y. T. Tsai*
Affiliation:
Department of Mechanical Engineering, HungKuo Delin University of Technology, New Taipei City, Taiwan, R.O.C.
K. H. Lin
Affiliation:
Department of Mechanical Engineering, Tungnan University, New Taipei City, Taiwan, R.O.C.
*
*Corresponding author (yttsai@mail.hdut.edu.tw)
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Abstract

This paper reported the designed approaches of cycloidal mechanisms, studied its dynamic forces and failure characteristics using finite element methods (FEM). A simplified cycloidal mechanism (CM) is constructed to fulfill dynamic analysis and reliability evaluation. The studied results show that the loads of the mechanism are shared mainly by a half of the outer rollers and the inner pins. The possible failures of the mechanism will occur at the inner pins caused by the bending stress, and at the cycloid disc induced by the contacting stress. The failure of the inner pins will dominate the damage of the mechanism. A method of evaluating stress variation is proposed for fulfilling reliability design. The stress variations are derived according to the data in dynamic analysis by regression analysis. The methods of design modification are reported for improve the reliabilities. The allowable loads of the CM can be decided accordingly based on the analyzed information.

Keywords

Failurestress analysisand reliability evaluation

Information

Type
Research Article
Information
Journal of Mechanics , Volume 36 , Issue 3 , June 2020 , pp. 395 - 403
Copyright
Copyright © 2020 The Society of Theoretical and Applied Mechanics

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References

REFERENCES

Sensinger, J. W. and Lipsey, J. H., “Cycloid vs. Harmonic Drives for use in High Ratio, Single Stage Robotic Transmissions”, IEEE International Conference on Robotics and Automation, (2012).CrossRefGoogle Scholar
Litvin, F.L. and Feng, P.H., “Computerized design and generation of cycloidal gearings”, Mechanism and Machine Theory, 31 (7), pp.891–911 (1996).CrossRefGoogle Scholar
Lai, T.S., Geometric design of roller drives with cylindrical meshing elements, Mechanism and Machine Theory, 40 (1), pp.55–57 (2005).CrossRefGoogle Scholar
Shin, J.H. and Kwon, S.M., “On the lobe profile design in a cycloid reducer using instant velocity center”, Mechanism and Machine Theory, 41 (5), pp.596–616 (2006).CrossRefGoogle Scholar
Hwang, Y.W. and Hsieh, C.F., “Geometric design using hypo-trochoid and non-undercutting conditions for an internal cycloidal gear”, Journal of Mechanical Design, 129, pp.413–420 (2007).CrossRefGoogle Scholar
Chen, B., Zhong, H., Liu, J., Li, C. and Fang, T., “Generation and investigation of a new cycloid drive with double contact”, Mechanism and Machine Theory, 49 (4), pp.270–283 (2012).CrossRefGoogle Scholar
Huang, C.H. and Tsai, S.J., “A study on loaded tooth contact analysis of a cycloid planetary gear reducer considering friction and bearing roller stiffness”, Journal of Advanced Mechanical Design, Systems, and Manufacturing, 11(6), pp.1–17 (2017).CrossRefGoogle Scholar
Xu, L.X. and Yang, Y.H., “Dynamic modeling and contact analysis of a cycloid-pin gear mechanism with a turning arm cylindrical roller bearing”, Mechanism and Machine Theory, 104, pp.327–349 (2016).CrossRefGoogle Scholar
Lin, W.S., Shih, Y.P. and Lee, J.J., “Design of a two-stage cycloidal gear reducer with tooth modifications”, Mechanism and Machine Theory, 79, pp.184–197 (2014).CrossRefGoogle Scholar
Lin, K.S., Chan, K.Y. and Lee, J.J., “Kinematic error analysis and tolerance allocation of cycloidal gear reducers”, Mechanism and Machine Theory, 124, pp.73–91 (2018).CrossRefGoogle Scholar
Tsai, Y.T., Lin, K. H. and Hsu, Y.Y., “Reliability design optimisation for practical applications based on modelling processes”, Journal of Engineering Design, 24(12), pp.849–863 (2013).CrossRefGoogle Scholar
Tsai, Y.T. and Lin, K. H., “Structural stress analysis and reliability evaluation for a new speed reducer”, Journal of Mechanics, 133(5), pp.631–640 (2017).CrossRefGoogle Scholar
Tsai, Y.T., Wang, K.S. and Woo, J.C., “Fatigue-life and reliability evaluations of dental implants based on computer simulation and limited test data”, Proc. IMechE, Part C: J. Mechanical Engineering Science, 227(3), pp. 554–564 (2013).CrossRefGoogle Scholar
Tsai, Y.T., Lin, K. H. and Wang, K.S., “The design and fatigue life prediction for a speed-reduction device”, Journal of Chinese Society of Mechanical Engineers, 39(4), pp.355–364 (2018).Google Scholar
Hsieh, C.F., “Traditional versus improved designs for cycloidal speed reducers with a small tooth difference: the effect on dynamics”, Mechanism and Machine Theory, 86, pp.15–35 (2015).CrossRefGoogle Scholar
Wang, Y., Qian, Q., Chen, G., Jin, S. and Chen, Y., “Multi-objective optimization design of cycloid pin gear planetary reducer”, Advances in Mechanical Engineering, 9(9), pp.1–10 (2017).Google Scholar
Kapur, K.C., and Lamberson, L.R., “Reliability in Engineering Design”, Chap. 5 Combination of Random Variables in Design, John Wiley & Sons, New York, 1977.Google Scholar