catia装配基础(学生部分)

AssemblyDesignFundamentalsCATIATraining

FoilsVersion5Release9

June2002EDU-CAT-E-ASM-FF-V5R91CopyrightDASSAULTSYSTEMES2002CoursePresentationObjectivesofthecourseInthiscourseyouwilllearntocreateandmanageCATProductfiles.TargetedaudienceCATIAV5users Prerequisites PartDesignCourses

1day2CopyrightDASSAULTSYSTEMES2002TableofContents(1/2)AssemblyDesignWorkbenchPresentation 5

AccessingtheWorkbench 6

UserInterface 8Terminology 10GeneralProcess 11

AssemblingComponents 13

CreatingaNewAssemblyDocument 14

AddingComponents 18

AssigningComponentProperties 29

SavinganAssemblyDocument 33

PositioningComponentsUsingConstraints 44

FreelyMovingComponents 45 CreatingAssemblyConstraints 52 UpdatingAssemblyConstraints 71

CreatingQuickConstraint 79

MultiConstraintsModes 83

HidingConstraints 88 FilteringConstraints 943CopyrightDASSAULTSYSTEMES20024. AnalyzinganAssembly 101 MeasuringanAssembly 102 ComputingClashandClearance 110

ViewvingMechanicalProperties 114

AnalyzingConstraints 118

AnalyzingDegreesoffreedom 1245. EditingPartsinanAssembly 128 Designingin-contextofanassembly 129 AligningComponentsforSketching 139 UsingLocalAxisforSnapping 142

6. WorkingwithComponents 146 UsingVisualizationMode 147

DeletingComponents 156 DuplicatingComponents 160 CreatingSymmetricalSub-Assemblies 167 ReplacingComponents 173 RestructuringComponents 178 ProductStructureReordering 182FlexibleSub-Assemblies 187FlexibleSub-Assemblies 188WhatcanyouDowithFlexibleSub-Assemblies? 195ManagingFlexibleSub-AssemblieswithSeveralLevels 200PropagatingPositiontoReference 207

TableofContents(2/2)4CopyrightDASSAULTSYSTEMES2002AssemblyDesignWorkbenchPresentationYouwilllearnabouttheAssemblyDesignWorkbenchby:AccessingtheworkbenchExploringtheUserInterfaceTerminologyUnderstandingthegeneralprocess5CopyrightDASSAULTSYSTEMES2002AccessingtheAssemblyDesignWorkbench(1/2)ToaccesstheAssemblyDesignWorkbench,StartCATIA,thenselecttheStartmenuchoosingMechanicalDesign

andAssemblyDesign.ThefirsttimeyouaccesstheAssemblyDesignWorkbenchifnowindowisopen,anewProductiscreatedAssemblyDesignWorkbenchicon6CopyrightDASSAULTSYSTEMES2002AccessingtheAssemblyDesignWorkbench(2/2)YoucaninsertAssemblyDesignWorkbenchinalistofyourfavoriteworbenchesandaccesitbytheWorkbenchandWorbenchesToolbars.ThisAssemblyDesignWorkbenchcanbenowaccesattheTopoftheStartMenu1SelectTools/CustomizeanddropAssemblyDesignontheFavoritesList2a2bAccesbyWorkbenchToolbarAccesbyWorkbenchesToolbar7CopyrightDASSAULTSYSTEMES2002UserInterface:AssemblyDesignToolbarsConstraintAssemblyTreeComponentsProductStructureMoveMeasureStandardToolbarCompassCatalogBrowserAnnotationsScenesFilterSelectionSpaceAnalysis8CopyrightDASSAULTSYSTEMES2002UserInterface:AssemblyDesignIconsUpdateSnapManipulateExplodeCoincidenceConstraintContactConstraintOffsetConstraintAngleConstraintFixComponentFixTogetherQuickConstraintFlexible/RigidSubAssemblyChangeConstraintReusePatternMeasureBetweenMeasureItemManageRepresentationFastMulti-InstanciationNewComponentNewProductExistingComponentReplaceComponentNewPartProductstructureReorderingGenerateNumberingProductInitCatalogBrowserMeasureInertiaWeldPlannerFlagNotewithLeaderTextwithLeaderStopManipulateonClash9CopyrightDASSAULTSYSTEMES2002TerminologyAcomponentisthegeneralterminology.Itcanbeapartoraassembly(insideanassemblyitiscalledasub-assembly).AnAssemblyorProductisacollectionofcomponentsandconstraintsthem.AssemblydocumentshavethefileextensionCATProduct.PartsandassemblieshaveaPartNumber(theNameofthecomponent).AllinstancesofapartorassemblyhavethesamePartNumber.EachinstancecanhaveitsownInstanceNamethatidentifiestheinstance.Theactiveitemistheitemcurrentlybeingedited.Youmakeitactivebydouble-clickingonit.Selecteditemsarehighlighted.InstancenamebydefaultisinparenthesisActiveitemisinblueSelectedcomponentishighlightedComponentthatisapartComponentthatisansub-assemblyPartNumber10CopyrightDASSAULTSYSTEMES2002GeneralProcessCreateanewassemblyoropenanexistingoneAdd,delete,andreplacecomponentsPositioncomponentsusingconstraintsAnalyzetheassemblyCapturevariousstatesoftheassemblyforanalyzingthedesignandpreparingfordraftingDesignpartsinthecontextoftheassembly11CopyrightDASSAULTSYSTEMES2002ToSumUp...YouhaveseenCATIAAssemblyDesignworkbenchspecificities:

Howtoaccesstheworkbench Itsuserinterfaceandtools Theterminologythatwillbeused Thegeneraldesignprocess12CopyrightDASSAULTSYSTEMES2002AssemblingComponentsYouwilllearntocreateanewassemblyCreatingaNewAssemblyDocumentAddingComponentsAssigningComponentPropertiesSavinganAssemblyDocumentToSumUp13CopyrightDASSAULTSYSTEMES2002CreatingaNewAssemblyDocumentYouwilllearnhowtocreateanewAssemblyDocument14CopyrightDASSAULTSYSTEMES2002WhatisanAssemblyDocument?AnAssemblyDocumentisadocumentthatisalsocalledaProductbecauseofitsfileextension.CATProduct.AnAssemblyorProductisacollectionofcomponentsblanksheetbehindthecomponenticonmeansthatthecomponentislinkedwithanexternalfileAassemblymaycontainaanotherassembly,Itiscalledasub-assemblyFull-clamp.CATProductInthisexample,Onefilesub-clamp.CATProductfor2InstancesClamp-pad.CATPart15CopyrightDASSAULTSYSTEMES2002CreatingaNewAssemblyDocumentWaystocreateanewdocument:1-Startmenu2-Filemenu3-WorkbenchIcon

AssemblyDesignWorkbenchicon16CopyrightDASSAULTSYSTEMES2002AssigningProductPropertiesProducttab123PropertiesRight-clicktheassembly4KeythePartNumberandotherpropertiesDescriptioninformation,calledProductProperties,canbekeyedforthenewAssemblyDocument.17CopyrightDASSAULTSYSTEMES2002AddingComponentsYouwilllearnhowtoaddnewandexistingcomponentstoanassembly18CopyrightDASSAULTSYSTEMES2002WhatareComponents?Init’ssimplestform,aComponentisaPartorAssemblythathasbeeninsertedintoanassembly.However,aComponentcanalsoberepresentedbydatathatisnotnativetoV5,suchasV4models,IGES,STEP,andVRML.

TherootassemblyCATPartcomponentCATProductcomponentV4modelcomponentComponentthatexistsonlyintheparentCATProductanddoesnothaveitsownfile19CopyrightDASSAULTSYSTEMES2002AddingComponents...MostvisiblewayistoselecttheassemblyandusetheiconsintheProductStructureToolbar21Fastestwayistoright-clicktheassembly(thatwillreceivethecomponent)andusetheContextualMenutoinsertthecomponent3LastwayistoselecttheassemblyandusetheInsertMenuTherearethreewaystoinsertcomponentsintoanassembly:ContextualMenu,ProductStructuretoolbar,andInsertMenu.20CopyrightDASSAULTSYSTEMES2002InsertinganExistingComponentRight-clicktheassembly123bDouble-clickthefiletoinsertExistingComponentOftenyouwillwanttoinsertexistingfilesascomponents.Insertedfilesarenotcopiedintotheassembly,theyarejust“referenced”bytheassembly.

Youcanimportmorethanonecomponentatatimebyselectingwiththemousewhileholdingthe[SHIFT]or[CTRL]key3aChooseafilterifdesired(forexample,CATPart,CATProduct,model,etc)21CopyrightDASSAULTSYSTEMES2002InsertingaNewPart4IfyoupressedYES,selectapointoracomponenttodefinetheoriginofthenewpartPressYEStodefineanoriginforthenewpartthatisdifferentfromtheoriginpointoftheassembly,otherwisepressNOIfyouselectacomponent,theoriginpointofthenewpartwillbethesameastheoriginpointoftheselectedcomponentIfyouselectapoint,theoriginofthenewpartwillbeexactlythispointNewparts(CATParts)canbeinsertedon-the-flywhiledesigninganassembly.KeyaPartNumberforthenewpart.ThissetsthePartNumberproperty.32NewPartRight-clicktheassembly122CopyrightDASSAULTSYSTEMES2002UserSetting:TurningONManualInputofPartNumbersSelect“ProductStructure”tab123Select“ProductStructure”branchunder“Infrastructure”nodeAsashortcut,PartNumberpropertiescanbekeyedwheninsertinganewpartinanassembly.4ActivateManualinputSelectOptions...fromtheToolsmenuInsertaNewPart23CopyrightDASSAULTSYSTEMES2002InsertingaNewProductNewassemblies(CATProducts)canbeinsertedon-the-fly.NewProductCommandwillcreateanewsubassemblyintheselectedcomponentbutalsoanewexternalCATProductfilewiththesamename.KeyaPartNumberforthenewassembly.ThissetsthePartNumberproperty.32NewProductRight-clicktheassembly1blanksheetbehindthecomponenticonmeansthatthecomponentislinkedwithanexternalfile24CopyrightDASSAULTSYSTEMES2002InsertingaNewComponentYoucancreateaspecialtypeofcomponentthatexistsonlyintheparentCATProductanddoesnothaveitsownfile.HereisonecomponentthatexistintheparentCATProductanddonothaveitsownfile.Youcaninsertcomponentsinit.KeyaPartNumberforthenewassembly.ThissetsthePartNumberproperty.32NewComponentRight-clicktheassembly1Thereisnoblanksheetbehindthecomponenticon:thereisnolinkwithanexternalfile.25CopyrightDASSAULTSYSTEMES2002WhyInsertingaComponentfromaCatalog?

ItcanbeusefultoinsertinyourassemblystandardcomponentsthatareonlyavailablethroughCatalogswheretheyarereferencedThisscrewwhichisreferencedinacatalogneedstobeinsertedinyourassembly26CopyrightDASSAULTSYSTEMES2002Insertingacomponentfromacatalog

Instandardtoolbar,selecttheCatalogBrowser231OpenchaptersuntilyougettheendchapterinwhichtheelementyouwantisreferencedToinserttheelementinsideyourdocumentyoucaneither:-draganddropitinthedestinationproduct(A)-makeacopywithcontextualmenuofelementandpasteindestinationproductofyourdocument(B)

IntheAssemblyDesignWorkbenchyoucaninsertcomponentsfromcatalogreferencingCATPartfilesorCATProductfiles(B)(A)27CopyrightDASSAULTSYSTEMES2002Copy-and-PasteaComponent123

Right-clickthecomponenttobecopiedCopyRight-clicktheassemblyinwhichyouwanttopastethecomponentAfterpastingtherearetwoinstancesofthepartCopy-and-Pasteisaneasywaytoduplicateacomponent.4PasteYoucanalsouseshortcutsAnotherwaytocopy-and-pasteacomponentistopress[CTRL]whiledraggingthecomponentontotheassembly.

[CTRL]keyInstancename28CopyrightDASSAULTSYSTEMES2002AssigningComponentPropertiesYouwilllearnhowtosetcomponenttextproperties29CopyrightDASSAULTSYSTEMES2002WhatareComponentProperties?ComponentPropertiescanbeassignedtodistinguishordescribeaninstanceofacomponent.

ComponentProperties:ComponentPropertyvaluescanvarybycomponent.Thesepropertiesarestoredintheparentassembly’sCATProductfile.ProductProperties:ProductPropertyvaluesarethesameforallinstancesofthecomponent.WhenthecomponentisaCATPartorCATProduct,thesepropertiesarestoredintheCATPartorCATProduct.WhenthecomponentisaV4model,theyarestoredintheparentassembly’sCATProductfile.InstanceName30CopyrightDASSAULTSYSTEMES2002AssigningComponentProperties(1/2)1NodesCustomization.InstanceNamePartNumberSelectTools/Options.SelectProductStructureandNodesCustomization

23ActivateCustomizedDisplayandselectyoursdesiredoptions31CopyrightDASSAULTSYSTEMES2002AssigningComponentProperties(2/2)Producttab56PropertiesRight-clickthecomponent4Likeotherproperties,componenttextpropertiescanbeeasilyaccessedfromthecontextualmenu.ComponentPropertyvaluescanvarybycomponent.ProductPropertyvaluesarethesameforallinstancesofapartorassembly.KeyanInstanceNameand/orDescription32CopyrightDASSAULTSYSTEMES2002SavinganAssemblyDocumentYouwilllearnhowtosaveanAssemblyDocument33CopyrightDASSAULTSYSTEMES2002SavinganAssemblyDocument...TherearevariouswaystosaveanAssemblyDocumentandchilddocuments.Save

willsavetheactivecomponent’sdocumentandchilddocumentsoftheactivedocumentSaveAs...issimilartoSave,butitallowsyoutospecifythenameandfolderfortheactivedocumentSaveAllwillsavealltheopendocumentsthathavebeenmodifiedsincelastsaveOnlythosedocumentsthathavebeenmodifiedwillbesavedorproposedtosave.SaveManagementwillproposesavingallopendocumentsandchildrenofthesedocument,butyoucancontrolnamesandlocationsofallofthem34CopyrightDASSAULTSYSTEMES2002SavingaDocumentunderanotherNameSaveAs…allowsafilenameandfoldertobespecified.Itallowsyoutocreateabrandnewdocumentwithnewinternalidentifiers.1Activatethedocumenttobesaved2SaveAs...4SpecifyifyouwanttoregenerateinternalidentifiersTheactiveCATProductdocumentandanymodifiedchilddocumentswillbesavedRegeneratingInternalIdentifierswillavoidinstantiationconflictswiththereferenceSpecifyafilenameandfolder335CopyrightDASSAULTSYSTEMES2002SavingallModifiedDocumentsSaveAllisaneasywaytosaveallmodifieddocumentswhicharenotneworreadonlydocuments.

1SaveAll2aIfallthedocumentsmodifiedsincelastsavearenotnew(justcreated)orreadonlyfiles,youwon’thaveanymessageandCATIAwillsavethemAllmodifiedopendocumentswillbesaved,regardlessofwhichdocumentisactive2bIfsomeofthedocumentsmodifiedsincelastsavearenew(justcreated)orreadonlyfilesyouwillhavethismessageAndclickingonOKwillgiveyouaccesstothe“SaveAllAs”command3b36CopyrightDASSAULTSYSTEMES2002WhatisSaveManagement?ThiscommandisusefultosaveallthemodifiedorlinkeddocumentsunderselectednamesanddirectoriesModifiedComponents37CopyrightDASSAULTSYSTEMES2002SaveManagement(1/5)Thiscommandisusefultosaveallthemodifieddocumentsunderothernamesanddirectories1MakemodificationsoncomponentsInthiscase,editingtheAxis.CATPartfile,wehaveincreasedthediameterofpad1from10to13mmandtheAxisNut.CATPartwasimpactedandmodifiedalso.Wedohave4modifieddocuments38CopyrightDASSAULTSYSTEMES2002SaveManagement(2/5)Thiscommandalsoremindyouwhatyouhavemodifiedsincelastsave.2Select“SaveManagement…”fromFilemenuNumberofunsavedmodifiedfilessincelastloadIfthefilehasbeenmodifiedorsavedsincelastload,itisindicatedinthe“State”column3SelectthefileyouwanttosaveNo“saveas”willbeperformeduntilyouhaveclickedonOKNamesofallfilescurrentlyusedaredisplayed...…andtheirpathsaswell.4Select“Saveas...”39CopyrightDASSAULTSYSTEMES2002SaveManagement(3/5)Thiscommandalsoremindyouwhatyouhavemodifiedsincelastsave.Selectthedestinationfolderandnameofthenewcreatedfileandselect“Save”5DestinationFolderName“Save”isindicatedfortheselecteddocument,and“SaveAuto”foritschilddocuments6ActionsthatwillbeperformedwhenclickingOk40CopyrightDASSAULTSYSTEMES2002SaveManagement(4/5)IfyouclickonOKastherearestillunsavedfilesleft,CATIAwilldisplaythismessage......andwillsaveonlythedocumentsthathavea“Save”or“SaveAuto”ActionIfyouselectforthe“saveas”aCATproductandifothermodifieddocumentsarereferenced

byit,thoseoneswillget“Saveauto”

intheActioncolumnandwillbesavedwhenclickingOkOnceyouhavesavedaproductinanewdirectory,youhavethepossibilitytosavethefilesreferencedbytheproductintothisdirectoryjustbyclickingonthe“propagatedirectory”button.ThiscommandsaveautomaticallyimpactedfilestooToknowwhataredocumentscalledbyaCATProduct,useLinkscommandfromEditmenuorDeskfromFilemenu41CopyrightDASSAULTSYSTEMES2002SaveManagement(5/5)YoucanchangeyourmindaboutthewayyousavethedocumentthankstoResetbuttonanditisnotmandatorytosaveadocumentunderanothernamethankstoSavebutton.Youcangetbacktheoriginalstateofthedocumentbyselectingitandclickingon“Reset”Youcanchoosetokeepsamenameandfolderforadocumentandinthiscaseusethesavebutton42CopyrightDASSAULTSYSTEMES2002ToSumUp...Youhaveseenhowtoassemblecomponents:

Howtocreateanewassemblydocument Howtoaddcomponentsinanassembly Howtoassigncomponentproperties Howtosaveanassemblydocument43CopyrightDASSAULTSYSTEMES2002PositioningComponentsusingConstraintsYouwillbecomefamiliarwithpositioningcomponentsinanassemblyusingassemblyconstraintsFreelyMovingComponentsCreatingAssemblyConstraintsUpdatingAssemblyConstraintsCreatingQuickConstraintsMultiConstraintsModesHidingConstraintsFilteringConstraintsToSumUp44CopyrightDASSAULTSYSTEMES2002FreelyMovingComponentsYouwilllearnhowtousetheCompasstofreelymovecomponentswhichmakesiteasiertopositionthemwhensettingassemblyconstraints45CopyrightDASSAULTSYSTEMES2002HowtheCompasscanbeUsed?TheCompasscanbeusedtopanandrotatetheentiresessionorfreelydragandrotatecomponentsinanassembly.PanningandrotatingtheentiresessionFreelydraggingandrotatingcomponentsHeretheentiresessionrotatedaroundtheX-axis.TherotationistemporarybecauseitisnotstoredinCATPartorCATProductdocuments.HereacomponentisfreelyrotatedaroundtheX-axis.TherotationmaybepermanentbecauseitisstoredinCATProductdocuments.Youwillfinditconvenienttofreelydragandrotatecomponenttomakeiteasiertocreateassemblyconstraints46CopyrightDASSAULTSYSTEMES2002PositioningtheCompasstoMoveaComponent1Moveyourcursoroverthesmallredsquareofthecompasstogetthiscursoricon23Whenthecomponentisselectable,thecompasstakestheorientationofthegeometricelementthatisunderthecompass.Toselect,releaseMB1.ThefirststepinfreelymovingacomponentistopositiontheCompassonacomponent.PressandholddownMB1todragthecompass.Whenmoved,thecompasstakesthisshape.IfyoureleaseMB1beforeanycomponentselection,thecompasswillreturntothispoint.AcomponentisselectablewhenthispointdisappearsGreenhighlightedcompassmeansthatacomponentisselectedandthatyoucanmoveitOnceacomponentisselected,youcanselectanyotheronebyclickingonit,andcompasswhenmovingwilldragit.47CopyrightDASSAULTSYSTEMES2002FreelymovingaComponentusingtheCompass1Placethecompassonacomponent2RotationaroundanaxisRotationaroundtheoriginofthecompassTranslationalongaplane3WithMB1helddown,movethecomponentHerearethebasicstepsforfreelymovingacomponent.SelectthetypeofmovementbymovingthecursorontheCompass.Thehighlightedcompasselementsindicatetheavailablemovement.TranslationalonganaxisTomoveacomponentwhilerespectingtheconstraints,press[SHIFT]whilepressingMB1andmovingthecomponent.[SHIFT]key48CopyrightDASSAULTSYSTEMES2002TranslatingaComponentusingtheCompass1PlacethecompassonacomponentHerearethebasicstepsfortranslatingacomponentusingtheCompass.2Right-clickonthecompassandselectEdit...4Fix-Togetherthecomponentsiftheywillnototherwisebeconstrained3aSpecifythepositionofthecompassby:Keyingvaluesandconfirmitwiththeapplybutton

ChoosethetranslationincrementforeachdirectionandapplyitwiththeUpandDownbuttonYoucanalsomeasureadistanceandapplyittotranslatethecomponent.3b49CopyrightDASSAULTSYSTEMES2002RotatingaComponentusingtheCompass1Placethecompassonacomponent2Right-clickonthecompassandselectEdit...3bChoosetheincrementvalueandmovethecomponentby:HerearethebasicstepsforrotatingacomponentusingtheCompass.4Fix-Togetherthecomponentsiftheywillnototherwisebeconstrained3aSpecifyarotationangleby:Keyingavalueandconfirmit;orSelectingelementsusingtheMeasureAngle…buttonSelectingonethesebuttonstorotatearoundtheU,V,orWaxis50CopyrightDASSAULTSYSTEMES2002SettingtheAbsolutePositionofaComponent2Selectacomponentandthecompasswill“jump”totheoriginoftheselectedcomponent3Right-clickonthecompassandselectEdit...Herearethebasicstepsforsettingtheabsolutepositionofacomponent.1Right-clickonthecompassandactivateSnapAutomaticallytoSelectedObjectTheabsolutepositionintheCompassEditwindowisactuallythepositionofthecompass,notthepositionofthecomponent.4aSpecifyapositionbykeyingvalues4bMovethecomponentbypressingtheApplybutton51CopyrightDASSAULTSYSTEMES2002CreatingAssemblyConstraintsYouwilllearnhowtoPositioncomponentssettingAssemblyConstraints52CopyrightDASSAULTSYSTEMES2002WhatareAssemblyConstraints?Assemblyconstraintsprovideyouanintuitivewaytocreateconstraintsbetweencomponents.Youcanprocessasfollow:1UsingtheCompass,freelydragandrotatecomponentstomakeaddingconstraintseasierFix-in-spaceonecomponentineachassemblythatwillserveasthebase23Setthepositionofcomponentsbyspecifyingconstraints4Update(regenerate)theconstraintstomovethecomponentsintoposition53CopyrightDASSAULTSYSTEMES2002SettingAssemblyConstraints...Thereareseveralwaystoreachandtouseconstraintsicons.1Tosetaconstraintbetweentwocomponents,youcaneither:Toreachtheicons,youcaneitheruse:2theConstrainttoolbarortheInsertMenuFirstclickontheiconthenselecttheElementsyouwanttoconstraintorfirstselectormultiselecttheelementstoconstraintandclickontheiconNotethatinthesecondcaseyoumayhavetousethe[Ctrl]keytomultiselectelementswhereasinthefirstcase,CATIAwillbewaitingforanextselection54CopyrightDASSAULTSYSTEMES2002ManualUpdateforAssemblyDesign2SelectAssemblyDesignbranchunder“MechanicalDesign”nodeYouhavetheoptiontoupdatemanuallyorautomaticallyassemblyconstraints.ActivateManual3ItispreferabletouseManualUpdatemodesothatcomponentsdonotmovearoundbeforebeingfullypositioned(fullyconstrained).1SelectOptions...fromtheToolsmenu55CopyrightDASSAULTSYSTEMES2002FixingaComponentinSpace(1/2)12Selectthecomponentinthetreeoringeometry3ThecomponentisfixedinspaceFixComponentsthatareFixedinspacereturntotheirfixed-in-spacepositionwhenconstraintsareupdated(regenerated).It’sagoodideatofix-in-spaceonecomponentineachassemblythatwillserveasthebase56CopyrightDASSAULTSYSTEMES2002FixingaComponentinSpace(2/2)CRIC_FRAMEcan’tmoveAfterUpdateDragCricFramewiththeCompass57CopyrightDASSAULTSYSTEMES2002FixingaComponent(1/2)12Double-clicktheFixconstraint3SelecttheMore>>buttonFixFixislikeFixinSpace,butwhenconstraintsareupdated,itwillonlystayatitscurrentplaceandwillnotgobacktoa“fixedinspace”position.4DeactivatetheFixinSpaceoption58CopyrightDASSAULTSYSTEMES2002FixingaComponent(2/2)AfterUpdateDragCricFramewiththeCompass59CopyrightDASSAULTSYSTEMES2002Fixing-TogetherComponentsComponentsthatareFixed-Togethermoveasasingleentitywhenupdating(regenerating)constraints.12SelectthecomponentstobeFixed-TogetherFixTogetherAsamatterofpractice,itwouldbeagoodideatoFix-Togetherunconstrainedcomponentstoavoidunintentionallymodificationordisplacement.60CopyrightDASSAULTSYSTEMES2002UserSetting:TurningOnFix-TogetherWarning12Select“AssemblyDesign”branchunder“MechanicalDesign”nodeFix-Togetherconstraintsareusedto“glue”componentstogether.UsingtheCompassitispossibletounintentionallyseparate“Fixed-Together”components.WewillactivatethewarningsothatcomponentsbelongingtoaFixTogetherconstraintarenotaccidentallymovedoutofposition.3ActivatewarningSelectOptions...fromtheToolsmenuUse“Generaltab”461CopyrightDASSAULTSYSTEMES2002DisregardingtheFix-TogetherWarningYouwillbewarnedwhenattemptingtomoveacomponentthatis“Fixed-Together”.Payintention,ifyoudisregardthewarningthenewpositionwillbepermanent.Forexample,whenattemptingtoSnapthiscomponent1Youwillseethiswarning2AfterpressingOKyoucancontinuetomovethecomponent3ButbewarethatpressingUpdatewillnotmovethecomponentbackinposition.IthasanewpositionwithintheFix-Together4ImmediatelypressUndoifyoudidnotintendtomovethecomponent.62CopyrightDASSAULTSYSTEMES2002CreatingaCoincidenceConstraint(1/2)Coincidencecreatesalignmentthatcanbecoaxial,coplanar,ormergedpoints.coaxialcoplanarmergedpoints1Coincidence2SelectthetwoelementstospecifytheconstraintTheconstraintiscreatedandtheelementsarealigned63CopyrightDASSAULTSYSTEMES2002CreatingaCoincidenceConstraint(2/2)Concerningcoplanaralignment,CATIAgivesachoiceoforientationwithtwogreenarrows12Justclickoneofthosegreenarrowstoinverttheorientationofthemovingcomponent.SelecttwoplanesasgeometricelementsfortheconstraintWhenputtingaconstraintbetweentwocomponents,themovingcomponentwillbethefirstselectedifitisnotfixedorfixedinspace1stselection2ndselection3Coincidence4ClickonOKwhentheorientationiscorrect64CopyrightDASSAULTSYSTEMES2002CreatingaContact