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外文翻译--汽车焊接夹具的设计.doc

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外文翻译--汽车焊接夹具的设计.doc

1TheDesignoftheWeldingJunetionClampofMotorcarAbstractThetextintroducesthedesignmethodandconstructionoftheweldingjunctionclampofmotorcar.KeyWordsWeldingassemblyBaseClampLoeation1.IntroductionAssemblyandweldingfixtureintheautomotivebodyassemblyandweldingproductionlineofcriticalprocessequipmentrelatedtomanufacturingqualityofthecar.Inweldingproduction.Assemblyandweldingfixturesinadditiontothecompletionofthisprocessthepartsassembly,positioning,thealsoservedasatestandcalibrationproceduresontheRoad,weldingpartsweldingqualityofthetask,soitsdesignandmanufactureoftheweldingprocessaffectsthelevelofautomobileproductioncapacityandproductquality.Automotivestylevary,weldingfixtureshapeandthusvarywidely,butinthedesign,manufacture,adjustmentshaveincommon,youcanlearnfromeachother.2.thestructuraldesignofweldingfixtureFixturestructuraldesign,toensurethatthefolderhasagoodconvenienceofoperation,clampingpositioningreliability.Fixturemanufacturersalsoadjustedtoensureeasyintegrationofvariouspartsofthestructuresurfaceshouldallowsufficientroomforadjustmenttoensurethethreedimensionaladjustable.Ensuringtheaccuracyoftheweldingqualityandweldingunderthepremiseofthestructureoffixtureshouldbeassimpleaspossible.Fixturedesignisusuallythegeneraluseofweldedstructures,thebasiccomponentisdividedintothreeparts,namelybase,supportthepositioningpart,clampingparts,foreachspecificfixturepositioningsupportbaseandsomeofthegeneraluseof10to20mmthicksteelplateweldedstructureA3.Clampingpartofthenormal10mmwithathicknessofabout45combinationofweldedsteelplate.2Pneumaticandmanualclampingpartofthetwo,accordingtothesizeofcarproductionclampingmethodtodeterminethegeneralhighvolumepneumaticclamping,thenmanuallyclampingcanbeusedasauxiliaryclampingsmallquantitiesinordertoreducethecostofmanuallyclampmode.Manualclampingisusuallymanuallyfastclip,manualquickclipoftheirproductshasbecomethestandard,typeandquantityneededcanbepurchasedinthemarket.Forsomefixturesrequireapneumaticclamping,butdirectuseofpneumaticclamping.Maydamagetheworkpiece,then,canbemanuallypressedfirstplace,togiveapneumaticclampingforcetoclamptheworkpiece,whichismanualPneumaticJthefixtureclampingsystemisinstalledonalargeplatform,allguaranteedfixtureintheweldingpositionofweldingconditionsshouldbeconsistentwiththedesignoftheworkpiececoordinatedimensions,whichinvolvesthepositioningfixturebenchmarks.3assemblyandweldingfixturesbenchmarksandtheirchoiceofsupportsurface3.1tflipchipbenchmarktestfixtureEachfixturemustbeafixturecoordinatesystem,inthiscoordinatesystem,thecoordinatesofitsbaseofsupportsizeshouldbesupportingtheworkpieceandthecoordinatescorrespondingtothesamesize.Fixturecoordinatesystemisestablishedbasedonfixturesideofthechildbase.Becausethewholefixturesystemtoguaranteeaspaceautoweldingpiecesofthreedimensionalcoordinatesystem,sothissysteminallofthefixturemusthaveacommonbenchmark,thisbenchmarkisthefixturetoinstallplatformthatistheX,YZuoBiao,eachspecificfixtureinplatformlocation,thecorrespondingheightshallcoordinateZ,sothatthreedimensionalXYZcoordinatesystemisestablished.Inordertofacilitatetheinstallationandmeasurementfixture,installtheplatformmusthavethecoordinatesofreference,therearegenerallythreetypesofstructurebelow.33.1.1ThequasiholemethodTombInstallationofplatformdesignisthefourreferenceholes,eachholeinthecenterofthetwoconnectionlinesformacoordinatedirection,thefourholesconstitutethecoordinatesoftwoperpendicularlines.This,XYplanecoordinatesystemontheset.Theestablishmentofthisbenchmarkisrelativelysimple,easytoprocess,butthemeasurementsusedinconjunctionwiththebaseblock.Baseblockisarectangularblocksizeoftheamountofaccuratemeasurement,theplatformisinstalledintothebaseholeinthebasemarketing,referenceblockoffasideclosetothetwobenchmarkstoformacoordinatedirection.3.1.2VtypetobelawThisapproachisintheprocesstoinstalltheplatformintoeachoftwo90degreeVgroove,whichVgrooveofaplanesurfaceperpendiculartotheinstallationofplatform,suchplaneperpendiculartotheplatform,thetwoVgroovegroovethesurfaceoftheformXYplanecoordinatesystem.3.13referenceblockmethodReferenceblockusingthesideperpendiculartothetwoconstitutivethreedimensionalXYZcoordinatesystem,usuallyafixturebasewith3to4blockscanbedirectlyinstalledontheplatformcanalsoaddabearingfixedtothefixtureplatform,butrequiresreferenceblockThelastplanetocontroltheheightmustbeconsistentwiththedirection.Manufacturingbasetoadjusttheblockinfrontofthetwomethodsisrelativelydifficult,butthemeasurementisconvenient,especiallytheuseofCMMmeasurements.Blockmethodwithabenchmarkofinstallationplatformplaneprocessingrequirementsarerelativelylow,alargersizeoftheinstallationplatformshouldusethismethod.3.2ThechoiceofbearingsurfaceBearingsurfaceshouldbeusedwhenweldingpiecesarefixedonthesurfaceofthecutplanetoplaneandinstalltheplatformangleisnotgreaterthan154degreesonthesurface.Asfaraspossiblethedetectionsurfaceandweldingpiecesofthesame,flatsurfaceasfaraspossibleinordertofacilitateprocessingandadjustment.Structureshouldbedesignedbearingsurfacecanbeeasilyprocessed,withthenumberofmodulesfortheproductcanbeusedtoprocessbearingNCsurface,inthedesign,thecarcoordinateXipointwasnotnecessarilysuitedfixturebearingsurfacewithNC,whichrequiressupportingthefixtureblockaccesspointSasthebase,theestablishmentofadigitalsurface,thissurfaceshouldbeconsistentandbetheBearingsurface,sothatwhenitwasmanufacturedtoSbasepointforNCmachining,precisionmachiningandassemblydebuggingeasy.4.positioningtheworkpieceThegenerallocationoftheworkpiecestoholesorobvioussurfacefeaturesasthepositioningreferencesurface.Thepositioningpinsarecommonlyusedcomponents.Fixturepositioningsubactivities,andfixedpositioningoftwo,forsomejobs,inordertofacilitatetheworkpieceintoandout,positioningtheformofoptionalactivities,eventsorblockpinpositioningstructureoftheformsubpneumaticandmanual,inprinciple,puttheworkpieceseeded,positioningpiecestoopenintotheworkpiece,thepositioningpiecesout,andthenclampworkpieceremoved,thepositiontoreturnitemsbeforeandafterclamprelease.Activitiescanbeusedlocatepiecesofthemovementstructureofpantypeorflipstyle,pantypestructureisusuallygivenpriority.5weldingpiecesofthestationtransferbetweenMostautoweldingpartstobeweldedinseveralstation,soitneedstransmissiondevice,usuallytoavoidinterferenceweldingfixture,theworkpieceinthetransmissionbeforethefirstpiecerises,whichrequiresuseelevator,liftingbodiesGearrack,fourlink,etc.,rackandpiniondrivestructureprocessingandlinkstructurearenotasgood.usuallylinkstructureStationtransmissionbetweentheinstitutions,thereareseveralforms,iegearandracktransmissionorganizations,nonrodcylinders,

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