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TECHNICAL PAPERS

Influence of Friction Damping on Workpiece-Fixture System Dynamics and Machining Stability

[+] Author and Article Information
B. Fang, R. E. DeVor, S. G. Kapoor

Department of Mechanical and Industrial Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801

J. Manuf. Sci. Eng 124(2), 226-233 (Apr 29, 2002) (8 pages) doi:10.1115/1.1459086 History: Received February 01, 2001; Revised August 01, 2001; Online April 29, 2002
Copyright © 2002 by ASME
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References

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Figures

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Relative motion between workpiece and ith fixture element
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Fixture setup and workpiece dimensions
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Measured and predicted accelerations with different clamping forces, Fc
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Evolution of damping ratio for single contact fixturing system
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Evolution of effective stiffness for single contact fixturing system
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Predicted relative motion between the workpiece and the side clamp for varying clamping forces
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Workpiece mesh and first mode shape
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Multiple contact fixturing system configuration
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Evolution of damping ratio for multiple contact fixturing system
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Evolution of effective stiffness for multiple contact fixturing system
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Accelerations of the workpiece and fixture elements at different contact interfaces (clamping force at C2=600 N; solid lines are workpiece accelerations; dashed lines are fixture accelerations)
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Comparison of relative motions of workpiece and fixture at L4 (clamping force at C2=600 N; solid lines are workpiece accelerations; dashed lines are fixture accelerations; experimental results are from 10)
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Stability charts for different clamping forces
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Comparison of model predicted and experimentally observed machining process stability

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