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Research Papers

Compliant Cardan Universal Joint

[+] Author and Article Information
Engin Tanık

Department of Mechanical Engineering,  Hacettepe University, Ankara 06800, Turkeyetanik@hacettepe.edu.tr

Volkan Parlaktaş

Department of Mechanical Engineering,  Hacettepe University, Ankara 06800, Turkeyvolkan@hacettepe.edu.tr

J. Mech. Des 134(2), 021011 (Feb 03, 2012) (5 pages) doi:10.1115/1.4005657 History: Received May 17, 2011; Revised December 23, 2011; Published February 03, 2012

In this study, a compliant version of the Cardan universal joint is introduced. The original design consists of two identical parts assembled at right angle with respect to each other. The single piece part can be produced from planar materials; thus, it has the advantage of easiness in manufacturing. Dimensions of the mechanism are devised in order to satisfy the Cardan joint theory and to avoid an undesired contact between the identical parts. As a design example, a mechanism is dimensioned. The resultant stresses at flexural hinges of this sample are determined via finite element analysis method and torque transmission capability of this mechanism is determined. Further, this sample is manufactured and operated under a considerable output loading. Therefore, robustness of the compliant Cardan joint is verified with this prototype. As well, it is verified that the results of experiments are consistent with the theoretical approaches.

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Copyright © 2012 by American Society of Mechanical Engineers
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References

Figures

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Figure 1

Cardan universal joint

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Figure 2

The original compliant Cardan universal joint

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Figure 3

Spherical 4-R linkage

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Figure 4

Dimensions of the compliant Cardan universal joint

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Figure 5

Compliant Cardan joint at the critical position

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Figure 6

PRBM of the compliant Cardan universal joint

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Figure 7

Tmax versus bend angle

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Figure 8

Manufacturing processes

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Figure 9

Prototype of the original compliant Cardan joint

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Figure 10

Deflection of the hinge at a specific position

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Figure 11

Deflection of flexural hinges and input torque variation for ζ = 20 deg and To  = 116.3 Nmm

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