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An Adjustable Constant Force Mechanism Using Pin Joints and Springs

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New Trends in Mechanism and Machine Science

Part of the book series: Mechanisms and Machine Science ((Mechan. Machine Science,volume 43))

Abstract

This paper presents a novel constant force mechanism based on a 11-revolute joints spatial linkage using simple pin joints and two regular springs. Passive linear sliders with ball bearings are not suitable for certain applications such as in medical environment or for miniaturization. Using only revolute joints in the mechanism allows for replacing all ball bearings with PTFE pin joints, which can be made smaller than ball bearings and are bio-compatible. Pin joints however have the disadvantage of generating friction, which can affect the quality of the constant force at the output link. This paper introduces the new pin joints constant force mechanism and presents an analysis of the effect of the friction generated by the joints on the output force.

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References

  1. Parlaktaş, V.: Spatial compliant constant-force mechanism. Mech. Mach. Theory 67, 152–165 (2013) (Elsevier)

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  4. Faraz, A., Payandeh, S.: Towards approximate models of Coulomb frictional moments in:(I) revolute pin joints and (II) spherical-socket ball joints. J. Eng. Math. 40.3, 283–296 (2001) (Springer)

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Acknowledgments

This research is supported by the Dutch Technology Foundation STW, iMIT program, project number 12702.

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Authors and Affiliations

  1. Delft University of Technology, Delft, The Netherlands

    Patrice Lambert & Just L. Herder

Authors
  1. Patrice Lambert
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  2. Just L. Herder
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Corresponding author

Correspondence to Patrice Lambert .

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Editors and Affiliations

  1. Ecole Centrale de Nantes 1, CNRS, Ecole Centrale de Nantes 1, Nantes , France

    Philippe Wenger

  2. 3001367002, University of Minho, Guimaraes, Portugal

    Paulo Flores

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© 2017 Springer International Publishing Switzerland

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Lambert, P., Herder, J.L. (2017). An Adjustable Constant Force Mechanism Using Pin Joints and Springs. In: Wenger, P., Flores, P. (eds) New Trends in Mechanism and Machine Science. Mechanisms and Machine Science, vol 43. Springer, Cham. https://doi.org/10.1007/978-3-319-44156-6_46

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  • DOI: https://doi.org/10.1007/978-3-319-44156-6_46

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-44155-9

  • Online ISBN: 978-3-319-44156-6

  • eBook Packages: EngineeringEngineering (R0)

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