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Design of a Reconfigurable, Monolithic Compliant Mechanism for a Six-Axis Nanomanipulator

[+] Author Affiliations
Martin L. Culpepper, Soohyung Kim

Massachusetts Institute of Technology, Cambridge, MA

Paper No. DETC2004-57586, pp. 1519-1523; 5 pages
doi:10.1115/DETC2004-57586
From:
  • ASME 2004 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 2: 28th Biennial Mechanisms and Robotics Conference, Parts A and B
  • Salt Lake City, Utah, USA, September 28–October 2, 2004
  • Conference Sponsors: Design Engineering Division and Computers and Information in Engineering Division
  • ISBN: 0-7918-4695-4 | eISBN: 0-7918-3742-4
  • Copyright © 2004 by ASME

abstract

In general, compliant mechanisms are single-state devices, meaning there is a one-to-one relationship between the inputs (actuation) and outputs (mechanism motion). This is particularly troublesome in precision mechanisms which offer limited flexibility in performance characteristics for high cost. In this paper we demonstrate a method which was proposed in earlier work (2002) to make a six-axis compliant mechanism with reconfigurable performance characteristics. The mechanism was synthesized using CoMeT, a compliant mechanism design tool, and optimized via FEA simulation. Experimental results show that (1) mechanism transmission ratio can be reconfigured between negative and positive numbers (2) that dynamic mode shapes may be changed and (3) that natural frequencies may be independently reconfigured. A means to handle the competing material requirements of large range and high-bandwidth is briefly presented.

Copyright © 2004 by ASME

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