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Design and investigation of a cycloid helical gear drive

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Abstract

In this paper, an original analysis of the geometric design of a parallel-axis cycloid helical gear drive and an investigation on its basic meshing characteristics are presented. This type of gear drive consists of a pinion with one tooth and a cycloid-helix gear in continuous line contact along the whole length of the tooth. Firstly, mathematical formulations of their tooth surfaces are derived based on the envelope theory and homogeneous coordinate transformation. Secondly, the undercutting analysis is applied to determine the design constraint to avoid the undercutting on the cycloid-helix gear tooth surface. Then, the meshing characteristics including the contact lines, surface of action, induced normal curvature are analyzed. Numerical example is presented to demonstrate the influence of design parameters on the contact stress distribution. Finally, the loaded tooth contact analysis is performed to simulate the tooth contact condition and to validate the stress distribution by the finite element method.

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Correspondence to Chaoyang Li.

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Recommended by Associate Editor Ki-Hoon Shin

Xuan Li is currently a Ph.D. student at State Key Laboratory of Mechanical Transmission, Chongqing University, China. He spent two years as a Visiting Scholar at University of Cincinnati, USA. His research interests include gear design and dynamics.

Chaoyang Li received his doctor's degree in engineering from the State Key Laboratory of Mechanical Transmission, Chongqing University, China. Dr. Li is currently an Associate Professor in School of Mechanical and Engineering at Chongqing University. His research areas of interest include gear design, optimization and manufacturing.

Bingkui Chen is currently a Professor and Director for the State Key Lab of Mechanical Transmissions at Chongqing University, China. He is also Vice Director of the CMES Gear Technical Committee and a member of the CMES Gear Manufacturing Committee. Prof. Chen has conducted pioneering research related to gear geometry, kinematics, dynamics and manufacturing.

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Li, X., Li, C., Chen, B. et al. Design and investigation of a cycloid helical gear drive. J Mech Sci Technol 31, 4329–4336 (2017). https://doi.org/10.1007/s12206-017-0831-8

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  • DOI: https://doi.org/10.1007/s12206-017-0831-8

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