沖壓模具-拉深變形特點及分析-浙江職業(yè)教育資源網Discovertheintricaciesofsheetmetalforminganddeepdrawingdeformationinthisengagingpresentation.Exploredifferenttypesofmoldsandformingtechnology,andgainathoroughunderstandingofthepropertiesthataffectmetaldeformation.IntroductiontoStampingMouldsFunctionProduce3Dpartsfromsheetmetal,plastic,orcomposites.TypesSingle-action,double-action,progressive,transfer,andcompounddies.MaterialsToolsteel,carbide,andceramic.ManufacturingCNCmachining,electricaldischargemachining,andgrinding.IntroductiontoDeepDrawingDeformationDefinitionAmetalformingprocessthatinvolvespullingaflatsheetmetalblankoveraformingdietoshapeitintoa3Dobject,suchasacuporcan.ApplicationKitchenandbathroomfixtures,automotivecomponents,andpackagingmaterials.PrecisionUsedforhighvolumeandhighprecisionmanufacturingduetoitslowscraprateandmaterialefficiency.CharacteristicsofDeepDrawingDeformation1MaterialElongationThematerialmustbestretchedtoachievethedesiredshape.2BlankHolderForceTheforcethatholdstheblankinplaceduringdeformation.3FrictionTheresistancebetweenthematerialandthediesurfacesdeterminestheamountofdeformation.4SpringbackThetendencyofthematerialtoreturntoitsoriginalflatshapeafterdeformation.AnalysisofDeepDrawingDeformation1ProcessVariablesBlankholderforce,punchforce,anddrawrate.2MaterialParametersYieldstrength,strainhardeningcoefficient,andcoefficientoffriction.3SurroundingConditionsTemperature,lubrication,andsurfacefinish.FactorsAffectingDeepDrawingDeformationSheetmetalthicknessThickermaterialrequiresmoreforcetodeformandmayhavemorespringback.DieclearanceClearancebetweenthepunchanddieaffectsfriction,aswellasmaterialthicknessandspringback.BlanksizeThewidthandlengthoftheblankdeterminehowmuchthematerialneedstoelongateandstretchduringdeformation.MaterialPropertiesandDeepDrawingDeformationTensileStrengthThehigherthestrength,themorelikelythematerialwillfractureduringdeformation.YieldStrengthThelowerthestrength,theeasierthematerialwilldeform,butthemorelikelyitwillhavespringback.Young'sModulusThehigherthemodulus,themoreresistantthematerialistodeformation.Poisson'sRatioThelowertheratio,themorematerialelongationwilloccurduringdeformation.SelectionofMetalSheetsforDeepDrawing1MaterialMetalalloyssuchassteel,aluminum,andcopper.2GaugeDependsontheapplicationanddesiredshape,generallyfrom0.005to0.2inches.3FinishSmoothortexturedsurfacecanaffectfrictionandappearanceoftheproduct.4CoatingAppliedtopreventcorrosionorimprovepaintadhesion,suchaszincorchromate.TypesofDeepDrawingMouldsProgressiveDieMultiplestationsallowformultipleoperationsinonepress,improvingspeedandefficiency.TransferDieTransfersthepartbetweenseveralpresses,all