Load sharing among plural pinions in planetary gears should be equal to reduce gear noise and to secure the strength of the gears and bearings. This study investigates the influence of bearing clearance on load sharing using multibody dynamics analysis. One of the characteristics of this analysis is its capability to calculate dynamic gear meshes and bearing clearance nonlinearity. Contact analysis of the gears defines the tooth surface expressed by numerical formula involving modified surface geometry. Moreover, nonlinear stiffness is used to express the bearing clearance. The numerical method is verified by experiments that measure bearing loads on pinions using strain gauges. Subsequently, the influence of bearing clearance is examined numerically. The results confirm that the clearance of the carrier is dominant. In addition, unequal loads arise from reductions in the bearing loads and inclination of the carrier. Finally, this paper suggests an appropriate clearance for well-balanced load sharing.
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ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
August 28–31, 2011
Washington, DC, USA
Conference Sponsors:
- Design Engineering Division and Computers and Information in Engineering Division
ISBN:
978-0-7918-5485-3
PROCEEDINGS PAPER
Influence of Bearing Clearance on Load Sharing in Planetary Gears Available to Purchase
Atsushi Suzuki,
Atsushi Suzuki
Toyota Central R&D Labs., Inc., Nagakute, Aichi, Japan
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Takayuki Aoyama,
Takayuki Aoyama
Toyota Central R&D Labs., Inc., Nagakute, Aichi, Japan
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Noboru Sugiura,
Noboru Sugiura
Toyota Central R&D Labs., Inc., Nagakute, Aichi, Japan
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Mizuho Inagaki,
Mizuho Inagaki
Toyota Central R&D Labs., Inc., Nagakute, Aichi, Japan
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Takashi Shimizu
Takashi Shimizu
Toyota Motor Corporation, Toyota, Aichi, Japan
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Atsushi Suzuki
Toyota Central R&D Labs., Inc., Nagakute, Aichi, Japan
Takayuki Aoyama
Toyota Central R&D Labs., Inc., Nagakute, Aichi, Japan
Noboru Sugiura
Toyota Central R&D Labs., Inc., Nagakute, Aichi, Japan
Mizuho Inagaki
Toyota Central R&D Labs., Inc., Nagakute, Aichi, Japan
Takashi Shimizu
Toyota Motor Corporation, Toyota, Aichi, Japan
Paper No:
DETC2011-47622, pp. 259-265; 7 pages
Published Online:
June 12, 2012
Citation
Suzuki, A, Aoyama, T, Sugiura, N, Inagaki, M, & Shimizu, T. "Influence of Bearing Clearance on Load Sharing in Planetary Gears." Proceedings of the ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Volume 8: 11th International Power Transmission and Gearing Conference; 13th International Conference on Advanced Vehicle and Tire Technologies. Washington, DC, USA. August 28–31, 2011. pp. 259-265. ASME. https://doi.org/10.1115/DETC2011-47622
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