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天津工程师范学院2007届本科生毕业设计ANOVELINTEGRATEDSYSTEMFORRAPIDPRODUCTDEVELOPMENTThispaperpresentsanovelintegratedsystemofrapidproductdevelopmentforreducingthetimeandcostofproductdevelopment.Thesystemiscomposedoffourbuildingblocks—digitalprototype,virtualprototype,physicalprototypeandrapidtoolingmanufacturingsystem.Itcanaideffectivelyinproductdesign,analysis,prototype,mould,andmanufacturingprocessdevelopmentbyintegratingcloselythevariousadvancedmanufacturingtechnologieswhichinvolvethe3DCAD,CAE,reverseengineering,rapidprototypingandrapidtooling.Furthermore,twoactualexamplesareprovidedtoillustratetheapplicationofthisintegratedsystem.Theresultsindicatethatthesystemhasahighpotentialtoreducefurtherthecycleandcostofproductdevelopment.Keywords:Rapidproductdevelopment;rapidprototyping;integratedsystem.1.IntroductionDuetothepressureofinternationalcompetitionandmarketglobalizationinthe21stcentury,therecontinuestobestrongdrivingforcesinindustrytocompeteeffectivelybyreducingmanufacturingtimesandcostswhileassuringhighqualityproductsandservices.Currentindustriesarefacingthenewchallenges:quickresponsetobusinessopportunityhasbeenconsideredasoneofthemostimportantfactorstoensurecompanycompetitiveness;manufacturingindustryisevolvingtowarddigitalization,networkandglobalization.Therefore,newproductsmustbemorequicklyandcheaplydeveloped,manufacturedandintroducedtothemarket.Inordertomeetthedemandofrapidproductdevelopment,thevariousnewtechnologiessuchasreverseengineering(RE),3DCAD,rapidprototyping(RP),andrapidtooling(RT)haveemergedandareregardedaskeyenablingtoolswiththeabilitytoshortentheproductdevelopmentandmanufacturingtime.Forexample,ithasbeenclaimedthatRPcancutnewproductdevelopmentcostsbyupto70%andthetimetomarketby90%.1Intheformofabetterdesign,moredesignpossibilities,a3DCADmodelcanbeshowntothecustomerforapprovalandpreventsmisunderstandings.Avirtualprototypingisemployedtoguideinoptimizationofthe1天津工程师范学院2007届本科生毕业设计productdesignandmanufacturingprocessplanning,whichmayresultintheaccuratedeterminationoftheprocessparameters,andreducethenumberofcostlyphysicalprototypeiterations.Rapidtoolingtechniqueoffersafastandlowcostmethodtoproducemoulds,andshowsahighpotentialforfasterresponsetomarketdemands.Whenproperlyintegratedamong3DCAD,CAE,RE,RPandRT,thesetechnologieswillplayamuchmoreimportantroletoreducefurtherthedevelopmentcycleandcostoftheproductproduction.Onthebasisofabovetechnologies,anovelintegratedsystemofrapidproductdevelopmentistobefoundedsoastomeettherequirementofrapidproductdevelopment.2.ArchitectureoftheIntegratedDevelopmentSystemThedevelopmentprocessfrominitialconceptualdesigntocommercialproductisaniterativeprocesswhichincludes:productdesign;analysisofperformance,safetyandreliability;productprototypingforexperimentalevaluation;anddesignmodification.Therefore,anystepofthenewproductdevelopmentprocesshasadirectandstronginfluenceontime-to-marketinshortorder.Agoodproductdevelopmentsystemmustenabledesignersordesignteamstoconsiderallaspectsofproductdesign,manufacturing,sellingandrecyclingattheearlystageofthedesigncycle.Sothatdesigniterationandchangescanbemadeeasilyandeffectively.Themorefluentthefeedbackisthehigherpossibilityofsuccessthesystemhas.Designformanufacturing(DFM)andconcurrentengineering(CE)necessitatethatproductandprocessdesignbedevelopedsimultaneouslyratherthansequent...