冲压模具外文英语文献翻译.doc

冲压模具外文英语文献翻译.doc

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HeatTreatmentofDieandMouldOrientedConcurrentDesign

LIXiong,ZHANGHong-bing,RUANXue—yu,LUOZhong—hua,ZHANGYan

Abstract:

Manydisadvantagesexistinthetraditionaldiedesignmethodwhichbelongstoserialpattern.Itiswellknownthatheattreatmentishighlyimportanttothedies.Anewideaofconcurrentdesignforheattreatmentprocessofdieandmouldwasdevelopedinordertoovercometheexistentshortcomingsofheattreatmentprocess.HeattreatmentCAD/CAEwasintegratedwithconcurrentcircumstanceandtherelevantmodelwasbuilt.Theseinvestigationscanremarkablyimproveefficiency,reducecostandensurequalityofRandDforproducts.

Keywords:

diedesign;heattreatment;mould

Traditionaldieandmoulddesign,mainlybyexperienceorsemi—experience，isisolatedfrommanufacturingprocess.Beforethedesignisfinalized，theschemeofdieandmouldisusuallymodifiedtimeandagain，thussomedisadvantagescomeintobeing,suchaslongdevelopmentperiod,highcostanduncertainpracticaleffect.Duetostrongdesiresforprecision,servicelife,developmentperiodandcost,moderndieandmouldshouldbedesignedandmanufacturedperfectly.Thereforemoreandmoreadvancedtechnologiesandinnovationshavebeenapplied,forexample,concurrentengineering,agilemanufacturingvirtualmanufacturing,collaborativedesign,etc.

Heattreatmentofdieandmouldisasimportantasdesign,manufactureandassemblybecauseithasavitaleffectonmanufacture，assemblyandservicelife．Designandmanufactureofdieandmouldhaveprogressedrapidly，butheattreatmentlaggedseriouslybehindthem．Asdieandmouldindustrydevelops，heattreatmentmustensuredieandmouldtherearegoodstateofmanufacture，assemblyandwear—resistantpropertiesbyrequest.Impertinentheattreatmentcaninfluencedieandmouldmanufacturingsuchasover—hardand—softandassembly．Traditionallytheheattreatmentprocesswasmadeoutaccordingtothemethodsandpropertiesbroughtforwardbydesigner．Thiscouldmakethedesignersofdieandmouldandheattreatmentdivergefromeachother，forthedesignersofdieandmouldcouldnotfullyrealizeheattreatmentprocessandmaterialsproperties，andcontrarilythedesignersrarelyunderstoodtheserviceenvironmentanddesigningthought.Thesedivergenceswillimpacttheprogressofdieandmouldtoagreatextent.Accordingly，iftheprocessdesignofheattreatmentisconsideredintheearlydesigningstage，theaimsofshorteningdevelopmentperiod，reducingcostandstabilizingqualitywillbeachievedandthesublimationofdevelopmentpatternfromserialtoconcurrentwillberealized．

Concurrentengineeringtakescomputerintegrationsystemasacarrier,attheverystartsubsequenteachstageandfactorshavebeenconsideredsuchasmanufacturing，heattreating，propertiesandsoforthinordertoavoidtheerror．Theconcurrentpatternhasdismissedthedefectofserialpattern,whichbringaboutarevolutionagainstserialpattern．

Inthepresentwork．theheattreatmentwasintegratedintotheconcurrentcircumstanceofthedieandmoulddevelopment，andthesystemicandprofoundresearchwasperformed．

1HeatTreatmentUnderConcurrentCircumstance

Theconcurrentpatterndiffersultimatelyfromtheserialpattern（seeFig．1）.Withregardtoserialpattern，thedesignersmostlyconsiderthestructureandfunctionofdieandmould，yethardlyconsidertheconsequentprocess，sothattheformermistakesareeasilyspreadbackwards．Meanwhile，thedesigndepartmentrarelycommunicateswiththeassembling，costaccountingandsalesdepartments．Theseproblemscertainlywillinfluencethedevelopmentprogressofdieandmouldandthemarketforeground．Whereasintheconcurrentpattern，therelationsamongdepartmentsareclose，therelateddepartmentsalltakepartinthedevelopmentprogressofdieandmouldandhavecloseintercommunionwithpurchasers．Thisispropitioustoeliminationoftheconflictsbetweendepartments，increasetheefficiencyandreducethecost．

Heattreatmentprocessintheconcurrentcircumstanceismadeoutnotafterblueprintandworkpiecetakenbutduringdieandmoulddesigning．Inthisway，itisfavorabletooptimizingtheheattreatmentprocessandmakingfulluseofthepotentialofthematerials．

2IntegrationofHeatTreatmentCAD／CAEforDieandMould

ItcanbeseenfromFig．2thattheprocessdesignandsimulationofheattreatmentarethecoreofintegrationframe．AfterinformationinputviaproductdesignmoduleandheattreatmentprocessgeneratedviaheattreatmentCADandheattreatmentCAEmodulewillautomaticallydividethemeshforpartsdrawing，simulationtemperaturefieldmicrostructureanalysisafterheat—treatmentandthedefectofpossibleemerging（suchasoverheat,overburning），andthentheheattreatmentprocessisjudgediftheoptimizatio