catia钣金设计教程PPT幻灯片课件

1,钣金设计,CATIA培训教程,2,课程介绍,先修课程:CatiaV5基础CatiaV5零件设计CatiaV5装配设计CatiaV5工程图设计:,课程目的本课程研究利用CATIAV5建立和编辑修改钣金特征和零件的方法。,学员对象从事CatiaV5钣金设计的用户,3,目錄,鈑金設計基礎1鈑金設計概述工作臺介紹:使用者介面、術語、一般過程2鈑金參數3鈑金壁板（Walls）4鈑金彎曲（Bends)和凸緣(Flanges)5鈑金沖孔（CutOuts），平面陣列模式及特徵6生成2D鈑金展開視圖7修改鈑金零件,4,进入工作台用户接口术语了解一般过程,介绍钣金设计工作台,钣金设计概述,5,进入工作台,可以从1-开始菜单2-档菜单3-工作台工具,进入钣金设计工作台，建立一个包含几何元素的PartBody,1-,2-,3-,6,文件扩展名.CATPart(与普通零件设计相同),钣金设计工具.,钣金参数,零件树,标准工具栏,特征.,钣金设计用户接口:,进入草图器.,钣金参数,7,Insert菜单或工具栏,钣金设计用户接口:钣金设计工具,扫掠壁板（Walls）,冲压（Stampings）,展开（Unfold）,钣金工具,弯曲（Bend）,数组（Patterns）,增强复制（PowerCopy）,8,术语,零件由一个或多个壁板、弯曲和特征组成参数通常是指设计零件的壁板厚度、弯曲半径和起伏类型的值起始壁板用草图（轮廓）生成，可以是一个或一组拉伸壁板特征施加在零件上的形态，如：冲孔、数组和冲压等,9,GeneralProcess,FromAssemblycreateanewpart(Top-downapproach),orCreateanewpartinsertinassembly(Bottom-upapproach),AssignMaterialParameters,Createdifferenttypesofwalls,Add冲孔and3DFeatures,Adddifferenttypesof弯曲,ModifyWallThicknessandWallSizes,CreatingaFlatViewofthepart,10,钣金Parameters,Inthislesson,youwillseehowtostarta钣金partbyassigningthebasicparameterneededtocreatethepart.,Defining钣金Parameters,11,Beforestartingtocreateany钣金part,definethe钣金Parametersofthepart.Thesearecommoncharacteristicsthatwhendefinedwillmakecreationeasierandthuslimityourneedtosupplydataduringcreationofthepart.,DefiningParameters,ParametersTab,BendExtremitiesTab,12,Parametersarethecommoncharacteristicusedinthecreationofthepart.Theyareassimpleasstatingthedimensionalrequirementofthematerialandbendradius,WhatareParameters?,ItisimportanttonoteherethatonlyonesetofparameterscanbeassignedinaCATPart,thereforeyouarelimitedtoonepartperdocument.,13,Inordertostarttherearethreebasicparametersthatneedtobeassigned:MaterialThicknessBendRadiusBendReliefType,WhatParametersneedtobedefined?,BendRadius,TypesofdifferentBendReliefs,SquareRelief,Minimumwithnorelief,RoundRelief,Linear,Tangent,Maximum,MaterialThickness,Remember,theBendRadiusassignedhereisthestandardBendRadiustobeusedonthepart.ThiswillbeusedtocreateallBendRadiiunlessspecifiedotherwiseduringthecreation.,14,DefiningMaterialThickness,Selectthe钣金ParameterIcon,1,ActivatetheParameterstabinthe钣金Parameterswindow,2,WiththeThicknessfieldactive,keyinthenewvalue,3,IftheMaterialThicknessisallyouarechanging,selectOKtoendthemodification,4,Createparts,15,DefiningMaterialBendRadius,Selectthe钣金ParameterIcon,1,ActivatetheParametersTabinthe钣金Parameterswindow,2,KeyinthenewBendRadius,Bendradiicanbeassmallas0.01mm.0Radiusisnotavailableyet.,3,4,SelectOK,Createparts,16,SelectingtheBendReliefType,Selectthe钣金ParameterIcon,1,SelecttheBendExtremitiesTabinthe钣金Parameterswindow,2,SelectthetypeofBendReliefdisplayedinthewindow,3,Thereliefwithitsdimensionsaredisplayed,4,IftheBendRadiusisallyouarechanging,selectOKtoendthemodification,5,Wherepossiblebendreliefvalues,L1andL2canbemodifiedtosuityourspecialneeds,Createparts,17,Inthislesson,youwillseehowtostarta钣金partanddifferentwaystodefinewalls,钣金Walls,DefiningWallsfromScratchDefiningWallsonExistingParts钣金Wallsrecapexercise,18,Youwilllearnhowtocreatethe5basictypesofwallsofferedinthe钣金workbench,DefiningWallsfromScratch,Profilewall,WallonEdge,ExtrudedWall,RolledWall,PiercedWall,19,Tostarta钣金part,createsometypeofwallfirsttostartfrom.Itcanbeaslittleasonelinethatyoucanextrudeawallfromoracomplexprofiletocreatemanywallsfromoraprofiletomakeanindividualwall.,Whatarewalls?,Beawarethatwhereyouselectedges,topvsbottomwilldriveadifferentproposalforyourwall.Forexample,atopselectionmayforceyourwalltogoinanupwarddirectionwhileabottomselectionmayforceyourwallinadownwarddirection.,Anexampleofhowdifferentwayscouldbeusedtocreatethispartisasfollows:Wall1couldhavebeencreatedfirstasaflatprofilewallandthenwalls2,3,and4couldhavebeendoneaswallsonedgeWall1,2,and3couldhavebeencreatedwithanextrudeandthenwall4couldhavebeendoneasawallonedge,1,2,3,4,20,TheProfilewallisusedtocreateawallofaspecificshape.Oftenusedasafirstwallofapart,Whentousethevarioustypesofwalls?,TheExtrudedwallsareusedtocreateagroupofwallsusingaspecificprofile.Hereitisusedtobuildasimple“U”shapedchassisorahatsectionusedtostrengthenotherparts.,TheWallonEdgeisusedtocreateawallonanedgeofanexistingwall.,Youcanalsoselectanedge,clickonthewalliconanddrawthesketchyouwant,21,ProfileWalls,EntertheSketcheronxyplaneandselecttheprofileicon,DrawtheSketch,ExitSketcherandselecttheprofileWallicon,Growtharrowdefaultsupward.Ifneeded,invertbutton,3,1,2,4,SelectOKtocreatethewall,5,Remember,thedirectionofgrowtheffectshowthewallwillbemodifiedifyouchangetheMaterialthicknesslater,growtharrow,22,ProfileWalls(with冲孔),EntertheSketcheronxyplaneandselecttheprofileicon,DrawtheSketch,ExitSketcherandselecttheprofileWallicon,Growtharrowdefaultsupward.Ifneeded,invertbutton,3,1,2,4,SelectOKtocreatethewall,5,Remember,thedirectionofgrowtheffectshowthewallwillbemodifiedifyouchangetheMaterialthicknesslater,23,WallsonanEdge,Selectthewallonedgeicon,SelectOKtocreatethewall,5,1,2,Keyinthenewvaluesandselectadimensionoptions,3,Toreversesketchprofiledirection,selectthisbutton,4,Selecttheedgetoattachthewalltoo,6,Selectthe“WithBend”optiontoautomaticallycreatethebend,24,WallsonanEdge(withclearance),Note:thereferencewallisnotimpactedbythenewwall,Selectthewallonedgeicon,SelectOKtocreatethewall,1,2,Keyinthenewvaluesandselectadimensionoptions,3,Selecttheclearanceoption.Thevalueisbydefaultdrivenbybendradius,4,Selecttheedgetoattachthewallto,6,Selectthe“WithBend”optiontoautomaticallycreatethebend,5,25,ExtrudedWalls,Note:inthetree,eachwalliscreatedseparatelyundertheextrusion.Nosketchesforthewallsarecreated;thesketchfortheoriginalprofileiskept.,Keyorselecttheextrusionparameters.,EntertheSketcheronxyplaneandselecttheprofileicon,Sketchtheprofile,1,2,ExitSketcherandselecttheExtrusionwallicon,3,SelectOK,4,5,Thewallscanbecreatedononeorbothsidesofthesketch(SecondLimit).Also,thematerialthicknesscanbeineitherdirectionorsymmetricallyaroundtheprofile(symmetricalthicknesscheckbox),26,IsolateWalls,MB3onExtrusionorEdgeWallandselectitemobjectandIsolate,1,IfanExtrusion,Selectawall,2,5localaxis,6sketchesandsomecoincidenceconstraintsareautomaticallycreatedforthisextrusion.,Canbeperformedon:extrusionwallswallonedge,YoucannotundoanIsolateactionafterhavingmodifiedthewall.IsolatingaWallonEdgeerasesallupdatingdata.,27,RolledWalls,EntertheSketcheronxyplaneandselecttheprofileicon,DrawtheSketch,ExitSketcherandselecttheExtrudeicon,Keyorselecttheextrusionparameters.,3,1,2,4,SelectOKtocreatethewall,5,RememberthedirectionofgrowtheffectshowthewallwillbemodifiedifyouchangetheMaterialthicknesslater,28,DefiningWallsonExistingParts,Youwilllearnhowtodefinewallsonexistingsolidparts,29,Anotherwaytostartcreating钣金wallsistotakeanexistingsolidandrecognize(=change)thesolidwallsinto钣金walls.,WhatisWallRecognition?,Beawarethatanycutoutsinthepart,whenitisrecognized,canonlybemodifiedinthePartDesignworkbench.,ReferenceWall,30,WallsRecognitionDefinitiondialogbox,2Wallcreationmodes:Partbodyrecognition:thewholesolidisprocessedandwallsarecreatedwhereverpossible.Onlyselectedfaces:onlyexplicitlyselectedfacesofthesolidareprocessedandthecorrespondingwallsarecreated.,Compulsorywalls-arefacesfromwhichthewallsaretobegeneratedwhentheremightbeanambiguity.Forexample,iftheinitialpartisabox,youwillneedtoselecttwooppositeinnerfacesandouterfacesontheothertwosidesofthebox,inordertoavoidoverlappingwhengeneratingthewalls.,Internalprofilesrecognitionmode:Ascutoutwall:generateswallswithinnercontours(nocutoutfeatureisgenerated)Onecutoutbywall:regardlessofhowmanypocketsthereareonafaceofthesolid,onlyonecutoutfeatureisgeneratedperwallOnecutoutbyprofile:foreachinnercontouronthesketch-basedsolid,acutoutfeatureisgeneratedNone:whethertherearepocketsonthesolidfaces,ornot,nocutoutfeatureiscreatedintheresulting钣金features.,31,RecognizingWallsonParts,ChangestoGeometrywillhavetobedonefromtheoriginalcreationgeometryinthePartDesignworkbench,SelecttheRecognizeicon,2,1,4,SelecttheUnfoldicon,TheTreeisupdatedwiththeNewWalls,SelecttheFaceoftheReferenceWall,ThethicknessoftheshellandtheradiusoftheFilletaretakenasthedefaultvaluesintheSheetMetalParameters.,5,3,SelecttheDefinitionparameters,32,钣金弯曲and凸缘,Inthislesson,youwillseehowtoadd弯曲toapartandalsoseesomedifferenttypeof凸缘thatcanbeusedwhencreatingparts,Defining弯曲betweenWallsDefiningDifferenttypesof凸缘available钣金弯曲and凸缘recapexercise,33,弯曲canbecreatedbyfourways.Ifyouchoose,youcancreateyourbendeachtimeyoucreateawallonanotherwalloryoucancreateabunchofwallsthatshowhowyourpartwilllookandthenuseAutomatic弯曲tocreateallofthematonetime.,Defining弯曲forWalls,SingularBend,Automatic弯曲,Conical弯曲,弯曲fromflat,34,A钣金partiscreatedfromonepieceofmetalthatiscuttotheshapeneededandfoldedtocreatethepart.Thesefoldsarewhatiscall弯曲.,Whatare弯曲?,Bend,BendRelief,BendReliefisthematerialcutout(removed)toallowthefoldingofthepartwithouttearingthematerialorcausingitdeform,35,InV5,thenewmethodologyistocreategroupsofwallswhichhaveacommonbendsize.Allowingagroupofwallstobecreatedallatonetimeandsavethestepsofhavingtoconfirmthedirectioneachtime.,WhentouseAutomatic弯曲?,Incaseswhereyouhavenon-standard弯曲,youwillhavetousethesingularbendcapabilityanddefinedirection.Therefore,itisimportanttomakesureyourstandardbendisthemostcommonbendsizeonyourpart.,SingularBendCreatedfirst,Allother弯曲arecreatedwithAutomatic弯曲,36,UsingtheAutoBendFunction,Today,thedirectionofthebendischosenforyou.,Displaythepartyouwishtohavethe弯曲addedtoo.,SelecttheAutomaticBendicon,1,2,Allofthebendradiiarecreatedatthedefaultvalue.,37,UsingtheSingularBendfunction,Bendarrowscanbeselectedtoreversethemandthedirectionofthebend.,Selecteachofthewallsinvolvedinthebend,2,SelecttheBendicon,1,TheBendDefinitionwindowisdisplayedindicatingtheWallsinvolved,radiusvalueandangularvalue,3,Thebendarrowsaredisplayedshowingthewallbenddirection,4,Thebendandreliefsarecreatedasassignedintheoriginalparameterswindow,38,UsingtheConicalBendfunction,Bendarrowscanbeselectedtoreversethemandthedirectionofthebend.,Selecteachofthewallsinvolvedinthebend,2,SelecttheConicalBendicon,1,TheBendDefinitionwindowisdisplayedindicatingtheWallsinvolved,radiusvaluesandangularvalue,3,Thebendarrowsaredisplayedshowingthewallbenddirection,4,39,UsingtheBendFromFlatfunction,Sketchalineonthefuturebendarea,1,TheBendFromFlatDefinitionwindowisdisplayedindicatingtheSketchinvolved,radiusvaluesandangularvalue,3,SelectOK,4,SelecttheBendFromFlaticonandthesketch,2,40,ModifyingaStandardBendRadius,Thisprocesscanalsobeusedtocreateabendbyselectingtheequationicon,Selecteachofthewallsinvolvedinthebend,2,SelecttheBendicon,1,TheBendDefinitionwindowisdisplayedindicatingtheWallsinvolved,radiusvalueandangularvalue,3,KeyinthenewvalueintheBenddefinitionwindow.Makesurethebendarrowsarepointingintheproperdirection,Right-clickintheRadiusfieldandselectFormula/Deactivate,4,5,Thebendandreliefsarecreatedasassignedintheoriginalparameterswindow,41,UsingtheCornerRelieffunction,2,Youhaveseveralshapesforrelieves:round,square,triangular.,SelecttheMorebuttonandswitchtoBendCornerReliefTabandactivatetheCornerReliefoption,3,Double-clickonthebendtoeditit,1,ClickOKtovalidate,YoucanalsodefinetheCornerReliefintheSheetMetalParameters,42,UsingtheUserCornerRelieffunction,SelecttheCornerReliefIcon,thesketchandthethreeimpacted弯曲directlyonthegeometry,3,Unfoldthepart;TheUserCornerReliefmustbedoneontheunfoldedpart,1,SketchthedesiredprofilesfortheCornerReliefArea,2,SelectOK,4,Youcanalsohaveaccesstoacatalogofpre-definedsketchesinsteadofdrawingyourownsketch.,43,凸缘comeinfourdifferenttypes:RegularFlange,HemBend,TeardropandSweptFlange.,Defining凸缘,RegularFlange,HemBend,TearDrop,SweptFlange,44,凸缘aredifferentwaystoform钣金intotabs,wallsandedgesthatgivefunctionality,beauty,strengthandsafetytothepart.,Whatare凸缘?,45,Regular凸缘areusedtocreatetabsincutoutsandsimple凸缘aroundtheedgesofparts,Whentousethevarioustypesof凸缘?,TearDropscanalsoservetocreatedecorativeedgesaswellascreatethingslikehingepinsopenings,Hem弯曲areusedtostrengthenlongthin钣金partsandtoalsosupplyasmoothsafeedge,Swept凸缘areusedtosweepprofilesaroundexterioredgesofparts.,46,Simple凸缘,Note:theedgesselectedcanbeonesingleedge,straightorcurvedoranynumberofeitheraslongastheyareconnected.,SelecttheFlangeicon,1,Selecttheedges,2,Keyinananglevalue,Keyintheradiusvalue,3,Keyinthelengthvalue,4,5,SelectOKtocreatetheflange,6,47,Theminimumradiusacceptedis.01mm,Keyinalength,4,SelectOKtocreatetheHembend,SelecttheHemBendicon,Selecttheedge,Keyinaradiusvalue,Aswithanyflange,multipleedgescanbeselectedtowrapitaroundthepart.,5,Hem弯曲,1,2,3,48,SelecttheTearDropBendicon,Keythelength,Selectanedge,2,Keyintheradius,3,SelectOKtocreateTearDropBend,4,TearDrop凸缘,1,5,Thelengthdimensioncannotbelessthentheradiusbutitcanbethesame;allowingyoutocreateahingepinopening.,49,Swept凸缘,Onlyasinglelineprofileneedstobecreatedhere.Theflangekeywilladdthethicknesspertheparameterscharacteristics,SelecttheSweptFlangeicon,SelecttheSpinethebendistobelocatedon.,2,SelectOKtocreatetheflange,4,Selecttheprofiletobeswept,1,3,Theelementconnectingtotheedgemustbetangentandcoincidentwiththeedge.,50,钣金CutOuts,FlatPatternModeandFeatures,Inthislesson,youwillseehowtoaddCutOutstoparts,patternthem,aswellashowtomakeuseofthe3DFeaturesavailable.,DefiningCutOutsinWallsGoingtoFlatPatternModeDefininga3DFeature钣金CutOuts,PatternsandFeaturesrecapexercise,51,Inthe钣金workbenchtherearenoHolesorPocketiconsasinthePartDesignworkbench.Openingsina钣金partarealldonewithaCutOuticon.,DefiningCutOutsinWalls,52,ACutOutisanyopeningina钣金wall.Itcanbeanything,fromassimpleascircularholetoamorecomplexcutout.CutOutscanbepatternedjustasinthePartDesignworkbench.,WhatareCutOuts?,TheCutOuticonisverysimilartothePocketiconinthePartDesignworkbenchandhasallofthedepthcapabilitiessuchas“UptoNext”and“UptoLast”,Acut-outcanbecreatedwithanopencontoursketch.,53,CutOutsareusedtosubtractmaterialtocreateahole,pocket,notch,slot,oranyothertypeopening.Theycanbeassimpleasacircleormorecomplexbyhavingmanyline,arc,splinesegments.,WhentouseCutOuts?,Aftercreatingawall,itispossibletoaddadditionalslotsontheexteriorofthewall,addnotches,orchamferswithcutoutswithoutmodifyingthewallsketch.,InternalwallCutOuts,CutOutusedtomodifyanexistingwall,54,CreatingaCutOut,Tip:For钣金parts,theuseof“UpToNext”willmakemodificationeasier.,Createtheprofileofthecutoutusingthesketcher,SelectOK,1,Selecttheparametersofthecutout,Returnto3DandselecttheCutouticon,2,4,5,Selecttheprofiletomakeitactive,3,Tip:“UsingUptoLast”allowsforthecutouttogothroughbothwallswithonetreeentry,55,CreatingCorners,YouhavetwowaystocreateCorners:selecteachedgeorselectthe“SelectAll”button,SelecttheCornersicon,Keyintheradiusvalue,3,1,SelectOK,4,Selecttheedge(s),2,IfyouchecktheConvexEdge(s)buttonandyouselectaconcaveedge,awarningisissuedindicatingthatyoudidnotselectanedgecorrespondingtotheactivetype.,Onceyouhaveselectedanedge,youcannolongermodifythecheckboxoptions,unlessyoucanceltheselection.,56,CreatingChamfers,YouhavetwowaystocreateChamfers:selectSharpedgeorWeldicon,SelecttheChamfericon,SelectoptionsandKeyvalues,4,1,SelectOK,5,Selectthetype:,2,Selecttheedge(s),3,SharporWeld,57,ThedifferenttypeofPatterns,RectangularPattern,CircularPattern,UserPattern,SeveralParameterconfigurations.Oneachcase,filltwoofthethreeparameters.Thereferencedirectionelementcanbeselecteddirectlyonthegeometry(edges).,The“CompleteCrown”Parameterisveryusefultoinstantiateafeatureallaroundacrown.,Fortheposition,selectasketchcontainingpointswherethenewfeatureswillbeinstantiated.,58,PatterningaCutOut,2,SelectthePatternicon,SelectOKtocreatethepattern,Definethepatternparameters,3,1,4,SelecttheCutOuttopattern,Note:instancesofthepatterncanbeturnedoffachieveastaggeredpattern,59,Whendesigninga钣金part,youmayfindtimeswhenyouneedtoseethepartinitsFlattenedstateforcheckingoraddingphysicalcutouts.,GoingtoFlatPatternMode,Thepartcanalsobedisplayinfoldedandtheunfoldedstatesintwodifferentwindowsatthesametime,60,FlatPatternModeiswhenyouareviewingthe钣金partinitsunfoldingcondition.Allowingallofthecutouts,edges,bendlimitsandfootprintstamptobedisplayed,WhatisFlatPatternMode?,Note:therearetimeswhenelementswillnotbedisplayedinFlatPatternMode.Forexample,ifawalldoesnothaveabendassignedtoit.Also,ifastampfeatureiscreatedoverthelimitbetweenseveralsupports,suchaswalls,弯曲,andsoforth,thisstampisalsonotvisible.,61,FlatPatternModeshouldbeusedwhenaCutOutwillbepartofmorethanonewallandgothroughabend.Thisallowsittobelocatedfromtheedgesontheflattenedpatternofthepart.,WhentouseFlatPatternMode?,AnotheruseofFlatPatternModeistobeabletolocateanyoverlapofwalls.Typically,thisoccurswhere凸缘overlapeachother.,InternalwallCutOuts,凸缘areOK,凸缘areoverlaped,62,GoingtoFlatPattern/PartMode,1,SelecttheUnfoldicon,Torefoldthepartsimplyselecttheiconagain,2,Acopyofthepartismaintainedinflatmodeduringthecreationofthepart,makingitquicktoswitchfromonemodetotheother.,CutOutsorWallscreatedin3Dmustbemodifiedin3D.Likewise,cutoutsmadeinFlatPatternModemustbemodifiedinFlatPatternMode.,Thepartisunfoldedaccordingtothereferencewallplane,63,SelectOK,asketchoftheoverlapzoneiscreatedanddisplayedonthetree,Checkingtheoverlaps,Switchtothe钣金ProductionWorkbench,1,SelecttheUnfoldicon,2,SelecttheCheckOverlappingicon,3,Theoverlapzoneishighlightedandawindowisdisplayed,4,+,64,Checkingtheoverlaps,SelecttheMapCurvesicon,1,SelecttheCurveonthe3Dgeometryorinthetree,2,3,Note:youmustbeintheunfoldedview,SelectOK,twosketchesoftheoverlapzonearemappedontheir3Dplace,Refoldthepart,youcannowmodifyitaccordingtothesketches,4,65,SelecttheCutOuticon,4,DefinetheCutOutparameters,SelecttheUnfoldicon,Createasketchapproximatelythesamesizeatthesamelocation,Selecttheflatsurfacetosketchon,Selecttheicontorefoldthepart,5,CreatingaCutOutinFlatPatternMode,2,3,1,6,CutOutscreatedinFlatPatternModecanalsobepatterned,66,Designinga钣金part,youwillfindaneedtouse3DFeatures(Stamps)suchasanextrudedholeorabridge.TheCATIA钣金workbenchprovidessomeofthecommonStampsFeaturesorallowsuser-definedones.,DefiningaStampFeature,67,AStampFeatureisacommonpieceofgeometryusedincreating钣