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New Synthesis Approach for Expandable Polyhedral Linkages

[+] Author Affiliations
Ying Zhang, Qizheng Liao, Shimin Wei

Beijing University of Posts and Telecommunications, Beijing, China

Hai-Jun Su

The Ohio State University, Columbus, OH

Weiqing Li

China University of Geosciences (Beijing), Beijing, China

Paper No. DETC2014-35114, pp. V05AT08A041; 9 pages
doi:10.1115/DETC2014-35114
From:
  • ASME 2014 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 5A: 38th Mechanisms and Robotics Conference
  • Buffalo, New York, USA, August 17–20, 2014
  • Conference Sponsors: Design Engineering Division, Computers and Information in Engineering Division
  • ISBN: 978-0-7918-4636-0
  • Copyright © 2014 by ASME

abstract

This paper presents a new synthesis approach for expandable polyhedral linkages, which are synthesized by inserting appropriate link groups into the faces of polyhedron and interconnecting them by a special composite hinges (called gusset by K. Wohlhart). The overconstrained expandable polyhedral linkages are movable with one degree of freedom (DOF).The link groups are single DOF scaling planar linkages. The gussets are multiple rotary joints whose axes converge at the corresponding vertices of the polyhedron and the number of the rotary joints equals the one of the faces which meet at the vertices. This new approach is suitable for any polyhedron whatever is regular or irregular polyhedron. To verify this new approach, the expandable regular hexahedral linkage is modeled in the SolidWorks and its mobility are studied based on screw theory and topology graph.

Copyright © 2014 by ASME
Topics: Linkages

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