Browse > Article
http://dx.doi.org/10.3795/KSME-A.2009.33.11.1217

Torsional Rigidity of a Two-stage Cycloid Drive  

Kim, Kyoung-Hong (숭실대학교 대학원 기계공학과)
Lee, Chun-Se (숭실대학교 대학원 기계공학과)
Ahn, Hyeong-Joon (숭실대학교 기계공학과)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.33, no.11, 2009 , pp. 1217-1224 More about this Journal
Abstract
This paper presents a finite element (FE) analysis of the torsional rigidity of a two-stage cycloid drive. The cycloid disk makes contact with a number of pin-rollers simultaneously and eccentric shafts transmit not only torque of the spur gear stage to the cycloid disk, but also that of the cycloid disk to the output disk. Contacts between the disk and pin-rollers are simplified as linear spring elements, and the bearing of eccentric shaft is modeled as a rigid ring that has frictional contact to the disk and an elastic support. FE analysis for an ideal solid cycloid drive was performed and verified by a theoretical calculation. Accurate contact forces were then estimated by iterating between FE analysis for contact forces and Hertz theory calculations for nonlinear contact stiffness. In addition, torsional rigidity of the cycloid drive is analyzed to show that the bearing and nonlinear Hertz contact theory should be considered in analysis and design of a cycloid drive, which was verified with experiments. Finally, the effects of contact stiffness, bearing stiffness and cycloid disk structural stiffness according to the cycloid disk rotation on the torsional rigidity were investigated.
Keywords
Cycloid Drive; FE Analysis; Hertz Contact Theory; Torsional Rigidity;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
Times Cited By SCOPUS : 1
연도 인용수 순위
1 Nabtesco, 2005, 'RV-E series catalog'
2 Botsiber, D.W., Kingston, L., 1956, 'Design and Performance of the Cycloid Speed Reducer,' Machine Design, pp. 65-69
3 Malhotra, S.K., Parameswaran, M.A., 1983, 'Analysis of a Cycloid Speed Reducer,' Mechanism and Machine Theory, Vol. 18, No. 6, pp. 491-499   DOI   ScienceOn
4 Lee, S. C., Oh, P. K., Kwon, O. K., 1987, 'A Study on the Design of Planocentric Torque Driver Used in Industrial Robot,' Journal of the KSLE, Vol. 3, No. 2, pp. 72-80   과학기술학회마을
5 Nam, W. K., Jang, I. H., Oh, S. H., Sim, K.B., 2006, 'Development and Design of Robot Speed Reducer(RSR) with Straight Line Teeth Profile for Human Robot,' Journal of the KIIS, Vol . 16, No. 3, pp. 315-320   과학기술학회마을   DOI   ScienceOn
6 Ishida, T., Hidaka, T., Wang, H., Yamada, H. and Hashimoto, M., 1996, 'Bending Stress and Tooth Contact Stress of Cycloid Gear with Thin Rims,' Transactions of the JSME C, Vol. 62, No. 593, pp. 291-297
7 Ishida, T., Shuting, Li. Yoshida, T., 1996, 'Tooth Load of Thin Rim Cycloidal Gear,' Power Transmission and Gearing Conference, ASME, DE-Vol. 88
8 Park, J. S., 2006, 'Stiffness and Error Analysis of the Cycloid Drive,' Ph.D Thesis, School of Mechanical and Aerospace Engineering at Seoul National University
9 Park, J. S., Lee, S. Y., Ahn, H. J., Han, D. C., 2005, 'Analysis of the Cycloid Drive with Tolerances,' Proc. of KSME autumn conference, pp. 2480-2484
10 Lee, S. Y., Park, J. S., Ahn, H. J.,, Han, D. C., 2005, 'Torsional Stiffness Analysis of a Cycloid Reducer Using Hertz Contact Theory,' Proc. of KSPE autumn conference, pp. 816-821   과학기술학회마을
11 Kim, K. H., Lee, C. S., Ahn, H. J., 2008, 'Torsional Stiffness of Cycloid Gear Considering Bearing and Hertz Contact,' Proc. of KSPE autumn conference, pp. 61-62   과학기술학회마을
12 Johnson, K.L., 2001, Contact Mechanics, Cambridge University Press
13 BEARINX(R)-online Shaft Calculation, INA-Schaeffler KG, 91072 Herzogenaurach (Germany)
14 Shin, J. H., Yoon, H. E., Kang, D. W., 2001, 'Study on Shape Design Method of Cycloidal Plate Gear,' Journal(A) of the KSME, Vol. 25, No. 1, pp. 70-80   과학기술학회마을