立体光照成型的注塑模具工艺的综合模拟 毕业设计外文翻译

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1、附录2IntegratedsimulationoftheinjectionmoldingprocesswithstereolithographymoldsAbstractFunctionalpartsareneededfordesignverificationtesting,fieldtrials,customerevaluation,andproductionplanning.Byeliminatingmultiplesteps,thecreationoftheinjectionmolddirect

2、lybyarapidprototyping(RP)processholdsthebestpromiseofreducingthetimeandcostneededtomoldlow-volumequantitiesofparts.ThepotentialofthisintegrationofinjectionmoldingwithRPhasbeendemonstratedmanytimes.Whatismissingisthefundamentalunderstandingofhowthemodi

3、ficationstothemoldmaterialandRPmanufacturingprocessimpactboththemolddesignandtheinjectionmoldingprocess.Inaddition,numericalsimulationtechniqueshavenowbecomehelpfultoolsofmolddesignersandprocessengineersfortraditionalinjectionmolding.Butallcurrentsimul

4、ationpackagesforconventionalinjectionmoldingarenolongerapplicabletothisnewtypeofinjectionmolds,mainlybecausethepropertyofthemoldmaterialchangesgreatly.Inthispaper,anintegratedapproachtoaccomplishanumericalsimulationofinjectionmoldingintorapid-prototyp

5、edmoldsisestablishedandacorrespondingsimulationsystemisdeveloped.Comparisonswithexperimentalresultsareemployedforverification,whichshowthatthepresentschemeiswellsuitedtohandleRPfabricatedstereolithography(SL)molds.KeywordsInjectionmoldingNumericalsimul

6、ationRapidprototyping1IntroductionIninjectionmolding,thepolymermeltathightemperatureisinjectedintothemoldunderhighpressure[1].Thus,themoldmaterialneedstohavethermalandmechanicalpropertiescapableofwithstandingthetemperaturesandpressuresofthemoldingcycl

7、e.Thefocusofmanystudieshasbeentocreatetheinjectionmolddirectlybyarapidprototyping(RP)process.Byeliminatingmultiplesteps,thismethodoftoolingholdsthebestpromiseofreducingthetimeandcostneededtocreatelow-volumequantitiesofpartsinaproductionmaterial.Thepot

8、entialofintegratinginjectionmoldingwithRPtechnologieshasbeendemonstratedmanytimes.ThepropertiesofRPmoldsareverydifferentfromthoseoftraditionalmetalmolds.Thekeydifferencesarethepropertiesofthermalconductivityandelasticmodulus(rigidity).Forexamp