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Folding Thick Materials Using Axially Varying Volume Trimming

[+] Author Affiliations
Jason S. Ku

Massachusetts Institute of Technology, Cambridge, MA

Paper No. DETC2017-67577, pp. V05BT08A044; 7 pages
  • ASME 2017 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 5B: 41st Mechanisms and Robotics Conference
  • Cleveland, Ohio, USA, August 6–9, 2017
  • Conference Sponsors: Design Engineering Division, Computers and Information in Engineering Division
  • ISBN: 978-0-7918-5818-9
  • Copyright © 2017 by ASME


Many new and complex methods have been proposed for building folded structures from thick materials. Volume trimming was one of the first and simplest techniques for fabricating ideal hinges using thick materials, though has remained largely unmodified since it was proposed. This paper extends and customizes constant thickness volume trimming for layered fabrication processes. Previously, constant thickness volume trimming uniformly removed material local to each hinge, leaving layers near the hinge vulnerable to delamination. We provide a method to retain material on both sides of the fold line to create stronger hinges by varying the profile of removed material along the axis of the hinge, even for hinges with large fold angle.

Copyright © 2017 by ASME



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