英语翻译1.IntroductionAprogressivedieisusedworldwideformassproductionofsheetmetalparts.Designofprogressivedieisacomplexandhighlyspecializedprocedureandtypicallyprogressivediedesigntakes20%oftheleadtimefromtheconce
英语翻译
1.Introduction
Aprogressivedieisusedworldwideformassproductionof
sheetmetalparts.Designofprogressivedieisacomplexand
highlyspecializedprocedureandtypicallyprogressivediedesign
takes20%oftheleadtimefromtheconceptdesigntothefinal
stampingmanufacture.Thediversenatureofproductsproduced
byprogressivediedemandsahighlevelofknowledgeonthepart
ofthediedesignerthatcanonlybeachievedthroughyearsofprac-ticalexperience.Checkingthedesignfeaturesofsheetmetalparts,
designofstrip-layout,selectionofdiecomponents,selectionof
materialsfordiecomponents;andmodelingofdiecomponents
anddieassemblyaremajoractivitiesfordesigningaprogressive
die.Thetraditionalmethodsofcarryingoutthesetasksrequire
expertiseandarelargelymanualandthereforetedious,timecon-suminganderror-prone.Thequalityofdiedesigndependstoa
largeextentonthedesigner’sskill,experienceandknowledge.A
numberofresearchershavetriedtodevelopcomputeraidedsys-temsforprogressivedie.Forexample,MurikamaandShirai
(1989)developedaCAD/CAMsystemwhichiscapableofgenerat-ingassemblyanddimensionedpartdrawingsasthefinaloutput
butthestripanddielayoutshavetobedonemanuallybythede-signer.ResearchersatNationalUniversityofSingaporeandInsti-tuteofHighPerformanceComputing,Singaporealsoreportedto
havedevelopedanintegratedmodellingandprocessplanning
system(2002)forplanningbendingoperationsofprogressivedies.
Sima,Lee,andJang(2004)carriedoutthestudyonthedevelop-mentofcentercarriertypeprogressivedieforU-bendingpartpro-cess.GhatrehnabyandArezoo(2009)reportedtodevelopan
automatednestingandpilotingsystemforprogressivedies.Some
researchersreportedtohavedevelopedintelligentCADsystemsfor
progressivedie.Forexample,DuffyandSun(1991)developeda
knowledge-basedsystemforthedesignofprogressivestamping
diesusingafeature-basedapproach.Lee,Lim,andNee(