Machining Fixture Verification for Nonlinear Fixture Systems |
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Authors: | JJ-X Liu DR Strong |
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Affiliation: | (1) Department of Mechanical and Industrial Engineering, The University of Manitoba, Winnipeg, Manitoba, Canada, CA |
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Abstract: | This paper presents a fixture configuration verification methodology for nonlinear fixture systems, which is developed on
the basis of optimal clamping forces and total restraint. This method can be applied for validating the feasibility of a fixture
with point, line and area contacts in two stages: fixturing and machining. The "∞-∞-∞" principle for nonlinear fixture location
is proposed. The automatic fixture verification system is modelled as a nonlinear optimisation problem with respect to minimum
clamping forces. The method provides a simple and effective means for: (a) verifying whether a particular fixturing configuration
is valid with respect to locating stability, deterministic workpiece location, clamping stability and total restraint and
(b) determining minimum variable clamping forces over the entire machining time. Two case studies are presented to demonstrate
the effectiveness and the capabilities of the methodology.
ID="A1"Correspondance and offprint requests to: Prof. D. R. Strong, Department of Mechanical and Industrial Engineering, The University of Manitoba, Winnipeg, Manitoba,
Canada R3T 5V6. E-mail: strong@ms.umanitoba.ca |
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Keywords: | : Fixture analysis Fixture design Fixture verification |
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