0
TECHNICAL PAPERS

Evaluation and Comparison of Alternative Compliant Overrunning Clutch Designs

[+] Author and Article Information
Gregory M. Roach, Larry L. Howell

Mechanical Engineering Dept., Brigham Young University, Provo, UT 84602

J. Mech. Des 124(3), 485-491 (Aug 06, 2002) (7 pages) doi:10.1115/1.1480414 History: Received October 01, 1999; Online August 06, 2002
Copyright © 2002 by ASME
Your Session has timed out. Please sign back in to continue.

References

Bickford,  J. H., 1968, “12 Ways to go 1 Way,” Mach. Des., 40(18), pp. 112–115.
Wiebusch,  C. F., 1939, “The Spring Clutch,” ASME J. Appl. Mech., 6, pp. 103–108.
Lowery,  R. D., and Mehrbrodt,  A. W., 1976, “How to do More With Wrapped-Spring Clutches,” Mach. Des., 48(17), pp. 78–83.
Orthwein, W. C., 1986, Clutches and Brakes Design and Selection, Marcel Dekker, Inc., New York, New York.
South, D. W., and Mancuso, J. R., 1994, Mechanical Power Transmission Components, Marcel Dekker, Inc., New York, New York.
Xu,  T., and Lowen,  G. G., 1994, “A Mathematical Model of an Over-Running Sprag Clutch,” Mech. Mach. Theory, 29(1), pp. 11–23.
Chironis, N. P., and Rossner, E. E., 1991, Mechanisms & Mechanical Devices Sourcebook, McGraw-Hill Inc., New York.
French, M., 1997, “Prospects for Progress in Mechanical Design,” Keynote Lecture Delivered at DETC’97, Sacramento, California.
Howell,  L. L., and Midha,  A., 1995, “Parametric Deflection Approximations for End-Loaded, Large-Deflection Beams in Compliant Mechanisms,” ASME J. Mech. Des., 117(1), pp. 156–165.
Howell,  L. L., Midha,  A., and Norton,  T. W., 1996, “Evaluation of Equivalent Spring Stiffness for Use in a Pseudo-Rigid-Body Model of Large-Deflection Compliant Mechanisms,” ASME J. Mech. Des., 118(1), pp. 126–131.
Roach, G. M., 1998, “An Investigation of Compliant Over-running Ratchet and Pawl Clutches,” M.S. Thesis, Brigham Young University, Provo, Utah.
Howell,  L. L., and Midha,  A., 1994, “A Method for the Design of Compliant Mechanisms with Small-Length Flexural Pivots,” ASME J. Mech. Des., 116(1), pp. 280–290.
Mortensen, C. R., Weight, B. L., Howell, L. L., and Magleby, S. P., 2000, “Compliant Mechanism Prototyping,” Proceedings of the 26th Biennial Mechanisms and Robotics Conference, 2000 ASME Design Engineering Technical Conferences, Baltimore, Maryland, DETC2000/MECH-14204.
Howell, L. L., and Midha, A., 1996, “Parametric Deflection Approximations for Initially Curved, Large-Deflection Beams in Compliant Mechanisms,” Proceedings of the 1996 ASME Design Engineering Technical Conferences, 96-DETC/MECH-1215.
Roach, G. M., Lyon, S. M., and Howell, L. L., 1998, “A Compliant, Over-running Ratchet and Pawl Clutch with Centrifugal Throw-out,” Proceedings of the 1998 ASME Design Engineering Technical Conferences, DETC98/MECH-5819.
Roach, G. M., and Howell, L. L., 2000, “Compliant Ratchet and Pawl Over-running Clutch with Centrifugal Throw-out,” U.S. Patent No. 6,148,979, issued Nov. 21, 2000.

Figures

Grahic Jump Location
Example over-running clutch types: spring clutch, roller or ball clutch, sprag clutch, and ratchet and pawl clutch
Grahic Jump Location
A rigid-body ratchet and pawl clutch with three pawls, pin joints, and leaf springs
Grahic Jump Location
A compliant ratchet and pawl clutch. The pawls are loaded in bending in the torque output direction.
Grahic Jump Location
The pseudo-rigid-body model of the cantilever beam
Grahic Jump Location
The cantilever beam with dimensional parameters
Grahic Jump Location
A compliant ratchet and pawl clutch with the pawls loaded in bending. The post serves to increase the stiffness of the beam in the torque output direction by decreasing the effective length of the cantilever beam.
Grahic Jump Location
A compliant ratchet and pawl clutch with the pawls loaded in tension by the ratchet teeth
Grahic Jump Location
A compliant ratchet and pawl over-running clutch with small-length flexural pivots
Grahic Jump Location
The PRBM of the small-length flexural pivot superimposed on the clutch pawl
Grahic Jump Location
The dimensional parameters for the small-length flexural pivot and pawl
Grahic Jump Location
A compliant ratchet and pawl clutch with the pawls loaded in compression
Grahic Jump Location
A compliant compression-loaded ratchet and pawl clutch (CCrat-pawl)
Grahic Jump Location
Model of the initially curved beam and pawl

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In