A Hydraulically-Actuated Reconfigurable Tool for Flexible Fabrication: Implementation and Control

[+] Author and Article Information
Daniel F. Walczyk, Yong-Tai Im

Department of Mechanical Engineering, Aeronautical Engineering & Mechanics, Jonsson Engineering Center, Rensselaer Polytechnic Institute, Troy, NY 12180-3590

J. Manuf. Sci. Eng 122(3), 562-568 (Aug 01, 1999) (7 pages) doi:10.1115/1.1286258 History: Received October 01, 1998; Revised August 01, 1999
Copyright © 2000 by ASME
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Reconfigurable discrete die used for forming sheet metal parts and molding composite parts
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Cross-sectional view of a hydraulically-actuated reconfigurable discrete die (only one pin column is shown)
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(a) Experimental set-up used for open loop position control experiments, (b) closed-loop control experiments and (c) close-up view of the valve configuration
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(a) Four pins located along the diagonal that were actuated for interaction test and (b) test set-up for each sampled pin
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System diagram of open-loop control system
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(a) Plotted points cluster around the mean in a normal distribution and (b) two methods of plotting three target point spreads
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Complete 4×4 test set-up for closed-loop control system with setting platen
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Die geometry used for repeatability and accuracy tests
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4×4 test die configured for a (a) spherical shape and (b) saddle shape




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