ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Multiple clamps are frequently used to serve the purpose of workholding in a fixture. Somultiple clamping forces including their magnitudes, placements and application sequences, greatlyinfluence contact forces and workpiece machining accuracy. In this paper, the impact of multipleclamping forces on workpiece location error is formulated analytically for a workpiece-fixturesystem. The proposed model takes into account the varying contact forces and friction force duringentire clamping operation. It reveals that the historical accumulation of clamping steps influencesheavily the final distribution of contact forces in the workpiece-fixture system. In addition, based oneffect of contact forces from one step to another on workpiece location, a novel design model ispresented to optimize the multiple clamping forces in order to minimize the workpiece locationerrors. Some numerical tests are finally demonstrated to validate the proposed model and approach
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/57/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.375-376.619.pdf
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