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A modified post-processing technique to design a compliant based microgripper with a plunger using topological optimization

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Abstract

The precision of microobject manipulation is predominantly based on the appropriate design of micromanipulation devices such as microgrippers. A compliant mechanism-based microgripper is an appropriate choice to achieve a highly precise and controlled motion. This research article proposes a refined technique to design a compliant-based microgripper with a plunger. The topological optimization technique has been adopted in this research work to develop the conceptual design of the mechanism. Flexure hinges are introduced in the topologically optimized design to overcome the senseless regions developed during the optimization process which is highly complicated to manufacture. Various flexure hinge contours such as rectangular, circular, and elliptical are introduced in the conceptual design domain, and their effects are investigated. Various parameters of flexure hinges are considered; the stress, the displacements, and the strain energy stored in the mechanism are studied through finite element analysis (FEA). In addition to FEA, experimental verification of the design was also performed. Both results are convincing about the structural performance of the microgripper design. In general, microdevices possess higher surface forces than volumetric forces; hence, this design is introduced with a plunger segment which is used to push the microobject for an active release during micromanipulation.

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Authors and Affiliations

  1. School of Mechanical and Building Sciences, Vellore Institute of Technology, Vellore, India

    R. Bharanidaran

  2. Department of Mechanical Engineering, National Institute of Technology, Tiruchirappalli, India

    T. Ramesh

Authors
  1. R. Bharanidaran
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  2. T. Ramesh
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Correspondence to R. Bharanidaran.

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Bharanidaran, R., Ramesh, T. A modified post-processing technique to design a compliant based microgripper with a plunger using topological optimization. Int J Adv Manuf Technol 93, 103–112 (2017). https://doi.org/10.1007/s00170-015-7801-z

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  • DOI: https://doi.org/10.1007/s00170-015-7801-z

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