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TECHNICAL PAPERS

Fundamental Characteristics of a New Variable Torque Clutch With Skewed Rollers

[+] Author and Article Information
Ming Feng, Kyosuke Ono

Dept. of Mechanical Engineering and Science, Tokyo Institute of Technology, 2-12-1, Ookayama, Meguro-ku, Tokyo, 152-8552, Japan

Kenji Mimura

MIM Design Company Ltd. 2-12-1 Kirigaoka Midori-ku, Yokohama, 226-0016, Japan

J. Mech. Des 123(3), 436-446 (Nov 01, 1999) (11 pages) doi:10.1115/1.1372191 History: Received November 01, 1999
Copyright © 2001 by ASME
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References

Orthwein, W. C., 1986, “Clutch and Brakes,” Marcel Dekker, Inc.
David, R. C., and John, M. K., 1997, “Generalized Equations for Roller One-Way Clutch Analysis and Design,” SAE Paper 970682, SAE Warrendale, PA, 1241 , pp. 27–37.
David, R. C., and John, M. K., 1998, “Generalized Equations for Sprag One-Way Clutch Analysis and Design,” SAE Paper 981092, SAE Warrendale, PA, 1324 , pp. 173–184.
Skip,  Gibbs, 1996, “Overrunning Clutch Expands Capabilities,” Power Transmission Design, 38, pp. 55–56.
Zvi,  Rigbi, 1997, “An Adjustable-torque Slipping Clutch,” Tribol. Int., 30, pp. 455–457.
Bell, R. J. T., 1923, “Coordinate Geometry of Three Dimensions,” Macmillan and Co., Ltd.
Hartnett,  M. J., 1979, “The Analysis of Contact Stresses in Rolling Element Bearings,” ASME J. Lubr. Technol., 101, pp. 105–109.
Kannel,  J. W., 1974, “Comparison Between Predicted and Measured Axial Pressure Distribution Between Cylinders, ” ASME J. Lubr. Technol., 96, pp. 508–514.

Figures

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Configuration and design parameters of the clutch; (a) Configuration of the clutch (Cross Skewing arrangement); (b) Geometrical parameters and coordinate systems.
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Geometrical relations between the central hyperboloid and the race surfaces
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Projection angle versus the axial displacement of the point on the race surface and the generator angle
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Normal angle versus the axial displacement of the point on the race surface and the generator angle
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Velocity relations between a pair of internal contact points on a common tangential plane
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Roller-wedge model of the clutch
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Forces acting upon a sliced roller and the related coordinate systems
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Torque capacity versus generator angles
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Torque capacity versus axial load
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Torque capacity versus axial displacement of the roller centroid
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Experimental torque capacity versus operation speed
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Torque capacity versus friction coefficient
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Distribution of the slipping ratio along roller axial direction under different geometrical conditions; (a) Distribution of the tangential slipping ration; (b) Distribution of the axial slipping ratio
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Dimensionless angular velocity of the cage and roller versus generator angle

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