Heterogeneous assembly at the microscale has recently emerged as a viable pathway to constructing 3-dimensional microrobots and other miniaturized devices. In contrast to self-assembly, this method is directed and deterministic, and is based on serial or parallel microassembly. Whereas at the meso and macro scales, automation is often undertaken after, and often benchmarked against manual assembly, we demonstrate that deterministic automation at the MEMS scale can be completed with higher yields through the use of engineered compliance and precision robotic cells. Snap fasteners have long been used as a way to exploit the inherent stability of local minima of the deformation energy caused by interference during part mating. In this paper we assume that the building blocks are 2 1/2 -dimensional, as is the case with lithographically microfabricated MEMS parts. The assembly of the snap fasteners is done using μ3, a multi-robot microassembly station with unique characteristics located at our ARRI’s Texas Microfactory lab. Experiments are performed to demonstrate that fast and reliable assemblies can be expected if the microparts and the robotic cell satisfy a so-called “High Yield Assembly Condition” (H.Y.A.C.). Important design trade-offs for assembly and performance of microsnap fasteners are discussed and experimentally evaluated.
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ASME 2008 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
August 3–6, 2008
Brooklyn, New York, USA
Conference Sponsors:
- Design Engineering Division and Computers in Engineering Division
ISBN:
978-0-7918-4328-4
PROCEEDINGS PAPER
High Yield Assembly of Compliant MEMS Snap Fasteners
Rakesh Murthy,
Rakesh Murthy
University of Texas - Arlington, Fort Worth, TX
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Aditya N. Das,
Aditya N. Das
University of Texas - Arlington, Fort Worth, TX
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Dan O. Popa
Dan O. Popa
University of Texas - Arlington, Fort Worth, TX
Search for other works by this author on:
Rakesh Murthy
University of Texas - Arlington, Fort Worth, TX
Aditya N. Das
University of Texas - Arlington, Fort Worth, TX
Dan O. Popa
University of Texas - Arlington, Fort Worth, TX
Paper No:
DETC2008-49232, pp. 789-797; 9 pages
Published Online:
July 13, 2009
Citation
Murthy, R, Das, AN, & Popa, DO. "High Yield Assembly of Compliant MEMS Snap Fasteners." Proceedings of the ASME 2008 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Volume 4: 20th International Conference on Design Theory and Methodology; Second International Conference on Micro- and Nanosystems. Brooklyn, New York, USA. August 3–6, 2008. pp. 789-797. ASME. https://doi.org/10.1115/DETC2008-49232
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