120H.Shim/JournalofMaterialsProcessingTechnology121(2002)116±122

Fig.(a)initial8.Blankdesignshapes(f130);and(b)deformed2nddesign;flange(c)at3rdthedesigndesign(optimal

stages(oilblank).

pan):specimenexperiment,beforerespectively.

deformationandafterdrawingusedinthe3.3.AUDIfrontdoorpaneldrawing

panelAsthethesurfacewhere®naldatatheexample,dieisimportedsurfacetheisdrawingofanAUDIfrontdoortopreparedthePam-StampbyaCAD1systemandformatshownhavebeenanalyzed.DiegeometryforthisinprocessanIGESisthecedurecommitteeinFig.10.ofStartingNumisheet'99,fromtheoptimalblankshapepreparedbylyzedblanktoisthecarriedout.Deformationprocessblankhasdesignbeenpro-ana-shapeiswidtherrorapproximatelyfullstrokeofallowanceare900thistakenmm,diesetup.Sincethelengthofasboth5mmtheandoffsetdandtherespectively.

whichdeterminetargetshapeissetthebytrimming20mm,theFig.deformedchange11(a)±(c)oftheshows¯angethecontoursevolutionofofundeformeddesignstageswithcontourinitialstagedesignexhibitsshapestage.someandtargetAsdeviationshape.theshapefromTheshape,errortargetdeformed¯angeeatthecontour3rddesignintheeveryreachedoptimaloutermostwithinblankofnode,thethepresenttheshapeblankerrorallowanceof5mmatfrontshapedoorhaspanelbeendrawing.

chosenastheFig.contour;9.Experimental(b)beforedrawing;results(c)forafter

theoptimaldrawing.

blank(oilpan):(a)flangeFig.10.DiegeometryforAUDIfrontdoorpaneldrawing.

frontFig.12(a)and(b)showsthedeformedshapeblank,panelwiththegiveninitialblankshapeandtheofoptimalAUDImethodThroughrespectively.

theinvestigationtheinthedesignofoptimalofdeep

blankdrawing.

designisfoundproposedtobeverysystematiceffective