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TECHNICAL PAPERS

Development of Zero-Spin Planetary Traction Drive Transmission: Part 2 — Performance Testing and Evaluation

[+] Author and Article Information
Xiaolan Ai

The Timken Company, Canton, OH 44706

J. Tribol 124(2), 392-397 (Jul 24, 2001) (6 pages) doi:10.1115/1.1405131 History: Received February 27, 2001; Revised July 24, 2001
Copyright © 2002 by ASME
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References

Ai, X., and Rybkoski, T., 2000, “Traction Drive Transmission,” U.S. Patent no. 6,095940.
Ai, X., 2000, “Development of Zero-spin Planetary Traction Drive Transmission: Part I—Principles of Design and Performance Modeling,” ASME J. Tribol., submitted to ASME.
“Power and Motion Control Reference Volume,” 1989, Mechanical Design, 12 , June, pp. 156–158.
Hewko,  L. O., 1968, “Roller Traction Drive Unit for Extremely Quiet Power Transmission,” AIAA, Journal of Hydronautics, 2, No. 3, pp. 160–167.
Bell,  J. C., Kannel,  J. W., and Allen,  C. M., 1964, “The Rheological Behavior of the Lubricant in the Contact Zone of a Rolling Contact System,” ASME J. Basic Eng., 83, No. 3, pp. 423–425.
Trachman, E. G., and Cheng, H. S., 1972, “Thermal and Non-Newtonian Effects on Traction in Elastohydrodynamic Contacts,” Symposium on Elastohydrodynamic Lubrication, Inst. Of Mech. Eng. (London), pp. 142–148.
Johnson,  K. L., and Tevaarwerk,  J. L., 1977, “Shear Behavior of Elastohydrodynamic Oil Films,” Proc. R. Soc. London, Ser. A, 356, No. 1685, pp. 215–236.
Fang, N., Chang, L., Webster, M. N., and Jackson, A., 1999, “A Non-Averaging Method of Determining the Rheological Properties of Traction Fluids,” SAE Paper No. 1999-01-1518.

Figures

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Tapered roller planetary traction drive
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Input torque versus output torque under various conditions
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Angular displacement as a function of output torque
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Dynamometer test system
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Efficiency under various operating conditions
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Traction drive curve for Santotrac 50, Ph=2.5 Gpa,T=40 °C, and u=2.0 m/s from Fang et al. 8
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Creep rate as functions of input torque and speed
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Temperatures of carrier plate and return lubricant
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Temperature rises measurement at O.D. of the annular housing and sun shaft

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