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IFToMM International Conference on Mechanisms, Transmissions and Applications

MeTrApp 2023: New Advances in Mechanisms, Transmissions and Applications pp 382–391Cite as

A Novel Adjustable Constant-Force Mechanism Based on Spring and Gear Transmission

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Part of the Mechanisms and Machine Science book series (Mechan. Machine Science,volume 124)

Abstract

This paper presents a novel adjustable constant-force mechanism (ACFM) based on spring and gear transmission. The mechanism is constructed by combining two gear-spring units and a Sarrus linkage. The significance of this design is that it can provide a constant force, which can be adjustable, over a large displacement. The adjustment of the output force is energy-free through a change in the spring position without spring preload. This work first explains the geometric constraints and desired parameters of the ACFM. Then, a numerical example is provided to illustrate the performance of the mechanism. Moreover, this paper also shows a prototype and experiments with an ACFM. It was found that the ACFM could provide a constant force of up to 20 N within a range of 140 mm, and the force error is less than 6%.

Keywords

  • Constant-force mechanism
  • Zero stiffness
  • Spring design

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Author information

Authors and Affiliations

  1. College of Engineering and Computer Science, VinUniversity, Hanoi, Vietnam

    Vu Linh Nguyen

Authors
  1. Vu Linh Nguyen
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Corresponding author

Correspondence to Vu Linh Nguyen .

Editor information

Editors and Affiliations

  1. SP2MI - Site du Futuroscope, University of Poitiers, Poitiers Cedex 9, France

    Med Amine Laribi

  2. College of Engineering, University of Nebraska-Lincoln, Lincoln, NE, USA

    Carl A. Nelson

  3. Department of Industrial Engineering, University of Rome Tor Vergata, Rome, Italy

    Marco Ceccarelli

  4. SP2MI - Site du Futuroscope, University of Poitiers, Poitiers Cedex 9, France

    Saïd Zeghloul

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Cite this paper

Nguyen, V.L. (2023). A Novel Adjustable Constant-Force Mechanism Based on Spring and Gear Transmission. In: Laribi, M.A., Nelson, C.A., Ceccarelli, M., Zeghloul, S. (eds) New Advances in Mechanisms, Transmissions and Applications. MeTrApp 2023. Mechanisms and Machine Science, vol 124. Springer, Cham. https://doi.org/10.1007/978-3-031-29815-8_37

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  • DOI: https://doi.org/10.1007/978-3-031-29815-8_37

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-031-29814-1

  • Online ISBN: 978-3-031-29815-8

  • eBook Packages: EngineeringEngineering (R0)

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