资源描述：
《毕业设计外文翻译-冲压模具设计成型方面.doc》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。
1、（外文翻译）英文翻译4Sheetmetalformingandblanking4.1Principlesofdiemanufacture4.1.1ClassificationofdiesInmetalforming,thegeometryoftheworkpieceisestablishedentirelyorpartiallybythegeometryofthedie.Incontrasttomachiningprocesses,ignificantlygreaterforcesarenece
2、ssaryinforming.Duetothecomplexityoftheparts,formingisoftennotcarriedoutinasingleoperation.Dependingonthegeometryofthepart,productioniscarriedoutinseveraloperationalstepsviaoneorseveralproductionprocessessuchasformingorblanking.Oneoperationcanalsoincl
3、udeseveralprocessessimultaneously(cf.Sect.2.1.4).Duringthedesignphase,thenecessarymanufacturingmethodsaswellasthesequenceandnumberofproductionstepsareestablishedinaprocessingplan(Fig.4.1.1).Inthisplan,theavailabilityofmachines,theplannedproductionvol
4、umesofthepartandotherboundaryconditionsaretakenintoaccount.Theaimistominimizethenumberofdiestobeusedwhilekeepingupahighlevelofoperationalreliability.ThepartsaregreatlysimplifiedrightfromtheirdesignstagebyclosecollaborationbetweenthePartDesignandProdu
5、ctionDepartmentsinordertoenableseveralformingandrelatedblankingprocessestobecarriedoutinoneformingstation.Obviously,themoreoperationswhichareintegratedintoasingledie,themorecomplexthestructureofthediebecomes.Theconsequencesarehighercosts,adecreaseino
6、utputandalowerreliability.17（外文翻译）Fig.4.1.1ProductionstepsforthemanufactureofanoilsumpTypesofdiesThetypeofdieandthecloselyrelatedtransportationofthepartbetweendiesisdeterminedinaccordancewiththeformingprocedure,thesizeofthepartinquestionandtheproduct
7、ionvolumeofpartstobeproduced.Theproductionoflargesheetmetalpartsiscarriedoutalmostexclusivelyusingsinglesetsofdies.Typicalpartscanbefoundinautomotivemanufacture,thedomesticapplianceindustryandradiatorproduction.Suitabletransfersystems,forexamplevacuu
8、msuctionsystems,allowtheinstallationofdouble-actiondiesinasufficientlylargemountingarea.Inthisway,forexample,therightandleftdoorsofacarcanbeformedjointlyinoneworkingstroke(cf.Fig.4.4.34).Largesizesinglediesareinstalledinlargepresses.Thetransportation
