A Flexure-Based Linear Guide With Torsion Reinforcement Structures

J. Rommers, M. Naves, D. M. Brouwer, J. L. Herder

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)
57 Downloads (Pure)

Abstract

In this study, a flexure-based (compliant) linear guide with a motion range comparable to its footprint is presented. The design consists of two-folded leaf springs on which torsion reinforcement structures are added. Due to these structures, only two-folded leaf springs are needed instead of a minimum of five as in preexisting designs. The new design is compared to such a preexisting design, after optimizing both on a support stiffness metric. The new design scores over twice as high on the support stiffness metric, while occupying a smaller (-33%) and a less obstructive build volume. Stress, build volume, and manufacturing limitations are taken into account. In addition, a variation on the new design using three torsion reinforced folded leaf springs is presented and optimized. This design occupies a build volume similar to the preexisting design, but scores four times higher on the support stiffness metric. A prototype of the new design is built and its parasitic eigenfrequencies are measured, validating the theoretical models (normalized mean absolute error of 4.3%).

Original languageEnglish
Article number031013
Number of pages8
JournalJournal of Mechanisms and Robotics
Volume14
Issue number3
DOIs
Publication statusPublished - 2022

Bibliographical note

Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care
Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Keywords

  • Compliant mechanisms
  • Dynamics
  • Mechanism design
  • Mechanism synthesis
  • Robot design

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