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TECHNICAL PAPERS

Modeling and Analysis of the Effect of Fixture-Workpiece Conformability on Static Stability

[+] Author and Article Information
José F. Hurtado, Shreyes N. Melkote

The George Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA

J. Manuf. Sci. Eng 124(2), 234-241 (Apr 29, 2002) (8 pages) doi:10.1115/1.1459084 History: Received November 01, 2000; Revised September 01, 2001; Online April 29, 2002
Copyright © 2002 by ASME
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References

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Figures

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Workpiece, contact and fixture stiffness modeling
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Fixture element and contact stiffness components
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Example #1: relative position of clamps, locators and external load. (Left) Scenario #1, (Right) Scenario #2.
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Example #2: locator and clamp positions for each scenario
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S, C1 and C2 for Example #2
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Angles between the external perturbation and the direction of principal translational stiffness
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Angles between the external perturbation and the direction of principal rotational stiffness
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Pin-array type flexible fixture used for model validation
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Workpiece surface model used for experimental validation
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Experimental pin layouts (front views)
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(Left) low-conformability fixture, (Right) high-conformability fixture. Legend: CH=Convex Hull,SP=Smallest Polygon.
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Global and local coordinate systems

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