Authors: S Plaza N Ortega J A Sanchez I Pombo A Mendikute
Publish Date: 2008/11/26
Volume: 44, Issue: 5-6, Pages: 529-538
Abstract
Tapercutting is a common application of the wire electrical discharge machining WEDM process used for the production of parts with complex geometry such as extrusion dies in wearresistant materials cutting dies etc During cutting the wire is subject to deformation resulting in deviations in the inclination angle of machined parts This fact causes dimensional errors and loss of tolerances that can lead to the rejection of high addedvalue tooling Currently WEDM machine manufacturers propose timeconsuming experimental trialanderror methodologies for the correction of the errors To reduce the experimental load and to contribute a more general approach to the problem two original models for the prediction of angular error in WEDM tapercutting are presented here Results show that part thickness and taper angle are the most influencing variables in the problem Experimental validation of the proposed models shows that angular error can be reduced below 3′45′′ in 75 of cases
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