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外文翻译--冷冲模具使用寿命的影响及对策.doc

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外文翻译--冷冲模具使用寿命的影响及对策.doc

DieLifeofcoldstampingdieandimprovementsOverviewofstampingdieStampingDieStampinginthecold,thematerialmetalornonmetallicprocessingintopartsorhalfofaspecialtechnicalequipment,calledcoldstampingdiecommonlyknownasDie.Pressisatroomtemperature,usingthedieinstalledinthepresstoputpressureonthematerialtoproduceaseparationorplasticdeformation,andthustoobtainthenecessarypartsofapressureprocessingmethod.Stampingdieintheformofmany,thegeneralcategoriesaccordingtothefollowingmainfeatures1.Accordingtothetechnicalnatureof1Diealongtheclosedoropencontourthematerialarederivedfrommold.Ifblankingdie,punchdie,cutoffthemold,cutmode,cuttingmode,splitmode,etc..2bendingmodetoblankorblanksheetalongastraightlinecurvedlinetobend,deform,andthusobtainacertainangleandshapeoftheworkpieceinthemold.3Thedrawingdieismadeoftheblanksheetopeninghollow,orhollowpiecesoffurtherchangestotheshapeandsizeofthemold.4Dieroughorsemifinishedworkpieceisconvexaccordingtoplan,directcopytheshapeofthedieshape,thematerialitself,generateonlylocalplasticdeformationofthemold.Suchasthebulgingmode,reducingthedie,expansiondie,formingdierolling,flangingmold,plasticmold.2.Accordingtothedegreeclassificationprocesscombination1singleprocessmodelinapresstour,justcompletedadiestampingprocess.2compositemodelisonlyonestation,inapresstour,atthesamestationatthesametimetocompletemorethantwoortwodiestampingprocess.3ProgressiveDiealsoknownasthemodulusofcontinuityinthefeedingdirection,rough,withtwoormoreofthestation,atthepressofavisit,workindifferentplacesonthecompletionoftwoortwosuccessiveRoadoverstampingdieprocess.ChongcalledcoldstampingdieDiewide.Coldstampingdieisusedincoldstampingdiemoldindustry,andaccessoriesrequiredforhighperformancestructuralceramicmaterials,preparationmethods,highperformanceceramicmaterials,moldsandaccessoriesfromthezirconiumoxideandyttriumaluminumpowderincreases,Prelementcomposition,Preparationisthesolutionofzirconia,yttriasolution,praseodymiumoxidesolution,accordingtoacertainpercentageofaluminasolutionwhenmixedliquor,ammoniumbicarbonateinfusion,bycoprecipitationsynthesisofceramicmaterials,moldsandaccessoriesneededforrawmaterials,reactionprecipitategeneratedbythetreatment,drying,calciningandaccessoriesbyhighperformanceceramicmoldmaterialsuperfinepowder,andthenafterforming,sintering,finishing,theywillhavehighperformanceceramicmaterials,moldsandaccessories.Advantagesofthisinventionistheinventionmadeofcoldstampingdiesandpartsandlongservicelife,theprocessdoesnotappearinthepressanditspartsandstampingdiebondgeneratedthephenomenonofstampingsurfaceissmooth,noglitches,canreplacetraditionalhighspeedsteel,tungstensteel.DiewiththemainpartsDiestampingtoolsisthemainprocessequipment,stampingrelyontherelativemovementunderthemoldcompleted.Processingtimebecausetheupperandlowermoldbetweentheconstantdivisionand,ifcontinuedoperationofthefingersofworkerstoenterorremaininthemoldclosed,therewillcertainlyposeaseriousthreattotheirpersonalsafety.Aofthemoldmainparts,functionandsafetyrequirements1.Workingpartsisadirectpunchtoblankformingtheworkingparts,therefore,itisthekeytomoldparts.Punchnotonlysophisticatedandcomplex,itshouldmeetthefollowingrequirements1beofsufficientstrength,cannotbebrokenordestroyedduringstamping.2shouldbeappropriatetoitsmaterialandheattreatmentrequirements,topreventtoohighhardnessandbrittlefracture.2.Positioningpartspositioningpartistodeterminethelocationofthepartsinstalledblank,therearepinsboard,gaugepinplate,leadissold,guideplate,knifesetfromtheside,sidepressureetc..Designshouldbeconsideredwhenpositioningpartseasytooperateandshouldnothavehadorientation,locationtofacilitateobservation,preferablyintheforwardposition,contouringtocorrectthepinlocationandpositioning.3.Binder,unloadinganddischargingpartsbindercomponentsareblankholder,binderboard.Blankholderpressurecandrawingblankholderforce,therebypreventingbilletsundertheactionofthetangentialpressurearchformedfolds.Theroleofpressureplatetopreventmovementandbounceblank.Topofthedevice,dischargeboardsroleistofacilitatethepiecesandcleanupwaste.Thembythespring,rubberandequipment,puttingontheaircushionsupport,canmoveupanddown,knockingoutpiecesofthedesignshouldhaveenoughtopoutput,movementtothelimitedspaces.Stripperplateareashouldbeminimizedorclosedpositionintheoperatinggroovemillingoutemptyhanded.Exposureofthestripperplateshouldhaveprotectionaroundtheplate,topreventfingerinsertedintoorforeignobjectsinside,exposedsurfaceedgesshouldbebluntdown.4.Guidepartsandguidesleeveguidepinisthemostwidelyusedpartofaguide.Itsroleistoensurepunchthepunchingclearancewhenaccuratematch.Therefore,theguideposts,guidecoverthegapshouldbelessthantheblankingclearance.GuidePostlocatednextmoldbase,toensurethatthestrokebottomdeadcenter,theleadcolumninthetemplateonthefaceoverthetopforatleast5to10mm.Guidecolumnsshouldbearrangedfarawayfromthemoduleandthepressureplateinthearea,sotheoperatorsarmsdonotgettotakeovertheleadcolumnmaterial.5.Supportingandclampingtheupperandlowerpartswhichincludestemplates,diehandle,fixedplatepunch,plate,stopper,etc..lthoughChinaDiewiththeindustryoverthepastdecadehasmaderemarkabledevelopment,butinmanywayscomparedwiththeindustrializedcountriesthereisstillalargegap.Forexample,theprecisionmachiningequipment,processingequipmentinDiewiththerelativelylowproportionCAD/CAE/CAMtechnologypenetrationisnothighmanyadvancedmoldtechnologynotwidelyso,resultinginaconsiderablenumberoflarge,sophisticated,complexandlongDielifewithdependenceonimports.Withthecontinuousprogressofscienceandtechnology,modernindustrialproductionofincreasinglycomplexanddiverse,productperformanceandqualityiseverincreasing,thusthecoldstampingtechnologyputforwardhigherrequirements.Inordertoadapttothecoldstampingtechnologyindustryneeds,coldstampingtechnologyitselfalsoininnovationanddevelopment.coldstampingtechnologyideaistoimproveandexpandasmuchaspossibletheadvantagesofthecoldstampingprocess,toovercomeitsshortcomings.inthecoldstampingtechnologydevelopment,shouldnotethefollowingaspects1coldstampingtechnologyprocessparametersshouldbeproperlyidentifiedandDiewiththeworkofsomeoftheshapeandsize,toimprovethequalityofstampingpartsandshortenthenewproductproductioncycleshouldbeinstrengtheningthemetalformingthebasisoftheoreticalstudies,tometalformingtheorytopracticecanproduceadirection,andgraduallyestablishacloseconnectionwiththeactualproductionoftheadvancedprocessofcalculation.abroadhavebeguntouseplasticfiniteelementmethod,automobilepartsformingprocessofthestressandstrainanalysisandcomputersimulationtopredicttheformingpartofaprocessplanonthepossibilitiesandpotentialproblems.2toaccelerateproductreplacement,molddesigntoovercometheshortcomingsofalongcycle.ShouldvigorouslycarryoutcomputeraideddesignandmanufactureofmoldsCAD/CAMResearch.Inmycountry,payingparticularattentiontostrengtheningthemultipositionprogressivedieCAD/CAMTechnology.3tomeettheneedsofmassproduction,andreducelaborintensity.Shouldstrengthencoldstampingofmechanizedandautomated,sothattheaverage,smallpiecesofhighspeedpressesinamultipositionprogressivedieproduction,productionreachedahighdegreeofautomationtofurtherimprovestampingproductivity.4expandthescopeofapplicationofcoldstampingproduction.Socoldpressingbothsuitableformassproduction,butalsoforsmallbatchproductionboththegeneralaccuracyofproductproduction,butalsocanproduceprecisionparts.Shouldpayattentiontodevelopmentsuchasfineblankingespeciallythickmaterialfineblanking,forminghighenergy,softmoldforming,pressureandprocessingnewsuperplasticformingprocess,butalsopromotetheeasymodesoftmodeandthelowmeltingpointalloymold,UniversalHybridmodel,theuseofCNCpunchpressandotherequipment.Inaddition,theperformanceimprovementofsheetmetalstamping,moldnewmaterial,diedevelopmentofnewprocessingmethodsshouldbefurtherstrengthened.DiewithlifeandCountermeasuresDiewiththelifeoftheworkpiecebypunchingoutthenumberofterms.ManyfactorsaffectthelifeDie.Therearediestructuredesign,manufacturemoldsusedinthepunchanddiematerials,diequalityandsurfacehardeningheattreatment,precisiondiemanufacturingpartsandcoldstampingmaterialsselection.Inaddition,therearedieinstallation,adjustment,useandmaintenance.1.DieDesignonLife1Layoutdesignoflayoutmethodsandtaketheboundaryvalueagreatimpactonthedielife,toosmalltotaketheboundaryvalue,oftencausingrapidwearandconvexmold,diebitewoundsonthe.Startingfrommaterialsavings,taketheboundaryvaluesmallerthebetter,buttaketheedgeislessthansomevalue,thecutsurfaceofthemoldandthequalityoflifeadversely.TherewillbeleftbehindintheblankingdieQgapweretoproducesparepartsglitch,orevendamagethedieedge,reducedielife.Therefore,considerincreasingthematerialutilizationofthesametime,partsmustyield,qualityandlifeexpectancytodeterminethelayoutmethodsandtaketheboundary.2diestructurepronetostressconcentrationonthecrackingofthediestructure,compositestructurecanbeusedormosaicstructure,andprestressedstructuretoenhancethemoldlife.3theimpactofclearancewhenthegapistoosmall,compressedextrusionofinterest,increasedfriction,increasedwear,thewearsideofaggravateddischargeandpushpiecesafterblankingtime,materialsandconvex,thefrictionbetweendiewillcausewearandtearthantheendedgeonthesideofthegrindingmuch,butalsoeasilyleadtoconvex,concavemoldtemperatureishigh,theadsorptionofmetaldebrisinthesideedgetoformametaltumor,sothatmaleandfemalediechippingorexpansionoccurscrackphenomenon.Therefore,thegapistoosmalltoDieLifeverybad.Gapistoolargewillincreasethepunchandthediefacetheedgeoftheconcentrationofstress,resultinginasharpincreaseinstress,sobladeedgequicklyloseangularyielddeformation.Therefore,additionofblankingforce,therebyenablingfasteredgeedgewear,reducedielife.Butinordertoreducethemaleandfemalediewear,extendingmoldlife,whileensuringqualityofstampingpiecesunderthepremisethatlargerspacedesignedproperlyitisnecessary.4Dieorientedstructureofthelifeofareliableguidefortheworkingpartsreducewear,preventmaleandfemalediebitewoundisveryeffective.Inparticular,nonsmallQgapQgaporDie,compounddieandmultipositionprogressivedieevenmoreimportant.Toimprovethedielife,mustbebasedonprocessesandthedemandofprecision,thecorrectchoiceorientedformandorientationaccuracy,thechoiceshouldbehigherthantheaccuracyorientedconvex,concavemoldwithprecision.5theimpactofcoldstampingmaterials,coldstampingmaterialsselectedshouldmeetthedesignrequirementsofworkpiecesandstampingprocessrequirements,oreasytomolddamageandreducemoldlife.Poorsurfacequalityofcoldstamping,punching,crackingwhentheworkpieceisalsoeasytoscratchmold.Badcoldstampingplasticmaterials,deformationissmall,easytopresswhentheworkpiecerupture,butalsoeasytoscratchmold.Inaddition,thematerialthicknesstolerancesshallcomplywithnationalstandards.Diebecauseofacertainthicknessofmaterialsuitableforforming,bending,flanging,drawingdieofthemaleandfemalediestructuregapisdirectlydeterminedbythethicknessofthematerial.Therefore,uneventhickness,willresultinwastegenerationandmolddamage.

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