CATIA鼠标曲面建模概要1

CATIAV5Surface-modeling(Tutorial2-Mouse)GSD(Surface-modeling)GSD(Surface-modeling)PartDesign(Solid-modeling)AssemblyDesignCATIASurface-modelingTutorial2AImport2DoutlinedrawingintoCatiaBuild3DcurvesbasedontheimporteddrawingBuildtheuppersurfacesofthemouse(byGenerativeShapeDesign)Tutorial2BDothedraftanalysistosearchanyundercutportionontheuppersurfacesAdjustthecurvatureoftheproblemsurfacemanuallyBuildthelowersurfacesofthemouseConvertthesurfacesintoasolidTutorial2CBuildthepartingsurfacesbasedontheimporteddrawingCreatecomponentsfromthefinishedmodelRe-assemblethecomponentsintoaproductModifytheoutlookofthemastermodelandthengetallcomponentsupdatedautomaticallyPleaseberemindedthatthisseriesoftutorialsisdesignedtodemonstrateadesignapproachwithCATIA,ratherthanthecommanditself.Downloadthe2doutlinedrawing(mouse_outline.dxf)fromtheweb:://.hk/~mmdsham/Ex2.htmCreateanewprojectfolderandstorethedownloadedfileintothefolderEnterCATIAbydouble-clickingitsicononthedesktop.(Ifthelicensemenupopsup,selectED2andcloseCATIA.Thenreopenagain).Bydefault,anempty“Product”fileiscreated.Butnow,youdon’tneedthis,justselect“File/Close”onthemenubar.Select“File/Open”onthemenubarandselectthedownloadeddrawing(mouse_outline.dxf)Toconfirmthatthesizeofthedrawingiscorrect:-Click“Dimensions”icon;Clickonthescalelineofthedrawing;Checkifthedisplayeddimensionis50mm;Ifnot,weneedtoenlargeorshrinkthedrawingintothecorrectsize.Tocopyandpastethedrawinginto3Dspace:-Multi-selectallentitiesonthedrawing,exceptthescalebar;Click“Copy”iconSelect“File/New”onthemenubar;Select“Part”astheType;Enter“Mouse_mastermodel”aspartname;Leavethetwooptions“Enablehybriddesign”&“Createageometricalset”unchecked;nowanewemptypartiscreated;(ToconfirmthatHybridDesignisnotactivated),selectTools/Options/infrastructure/PartInfrastructure…thenconfirmthattheoption“EnableHybridDesigninsidepartbodiesandbodies”isNOTSELECTEDCheckifthecurrentworkbenchhasbeen“GenerativeShapeDesign”.Youcanseetheworkbenchiconattheupperright-handcorner.Ifthecurrentworkbenchis“PartDesign”forexample,select“Start/Shape/GenerativeShapeDesign”onthemenubar;Select“Insert/GeometricalSet…”onthemenubar;thenclickoktoconfirm;(Thisgeometricalsetisgoingtostoreallthreereferenceviewsofthemouse)Click“Sketch”iconandselectxyplane;Click“Paste”icontopastethedrawingontothexyplane;Click“Exit”icontoexitthesketchermode.(Now“Sketch.1”isstoredin“GeometricalSet.1”)Tosplitthedrawingintothreeindividualviewsandpositionthem:-Duplicatetwomore“Sketch.1”bycopy-andpastefunction;Renamethemas“TopView”,“FrontView”&“SideView”;Click“Plane”icon;Select“offsetfromplane”astype;Pickxyplaneasreference;Enter150mmasOffsetvalue;Clickoktoconfirm;Createanoffsetplane,150mmfromYZplane;Createanoffsetplane,150mmfromZXplane;Right-clickon“TopView”onthetreeandselect“TopViewobject/ChangeSketchSupport”;Select“Plane.1”ClickoktoconfirmSimilarly,right-click“FrontView”andselect“ChangeSketchSupport”;Select“Plane.2”ClickoktoconfirmSimilarly,right-click“SideView”andselect“ChangeSketchSupport”;Select“Plane.3”ClickoktoconfirmDouble-click“TopView”sketchonthetreetoedit;Selectanddeletethecurvesnotrelatedtothetopview;Createapointattherightmostoftheshape(Click“point”icon,putthemousecursorontotherightmostarc,clicktoconfirmitspositionwhenitisalignedonthesamelevelasthecenteroftheinnerarc);AlignedSelectallelementsoftheshapeandclick“Translate”icon;12Leave“Duplicatemode”u12Clickthepointthatwejustcreated;ThenClicktheoriginofthesketch.(Nowthetopviewisrelocatedattheorigin);Click“Exit”tocomplete.Similarly,wecanmodify“SideView”…Firstweseethesideviewisupsidedown.Toreverseit,right-clickthe“SideView”sketchonthetreeandselect“ChangeSketchSupport”;Select“Positioned”asTypeofsketchpositioning;Select“Implicit”asbothOriginType&OrientationType;Select“ReverseH”option;Clickoktoconfirm.Double-click“SideView”sketchonthetreetoedit;Selectanddeletethecurvesnotrelatedtothesideview;Selectallelementsoftheshapeandclick“Translate”icon;Leave“Duplicatemode”unchecked;Clickthepoint;ThenClicktheoriginofthesketch.(Nowwecanseeaportionofthesketchexceedstheyaxis,soweneedtofine-tuneit);Selectallelementsoftheshapeandclick“Translate”iconagain;ClicktheoriginEnter2.85mmaslengthandpress“Enter”keyonthekeyboard;Clickanotherpointonnegativesideofx-axisClick“Exit”icontocompleteTopViewSideViewFrontViewSimilarly,wecanmodify“TopViewSideViewFrontViewFirstweseethesideviewisorientatedcorrectly.Toadjustit,right-clickthe“FrontView”sketchonthetreeandselect“ChangeSketchSupport”;Select“Positioned”asTypeofsketchpositioning;Select“Implicit”asbothOriginType&OrientationType;Clickoktoconfirm.Double-click“FrontView”sketchonthetreetoedit;Selectanddeletethecurvesnotrelatedtothefrontview;SolidbluecircleCreateapointatthemiddleofthelowestline(Click“point”icon,putthemousecursorontotheloweststraightline,clicktoconfirmitspositionwhentheauto-detectsymbolisasolidbluecircle);SolidbluecircleOriginofApointOriginofApoint“Translate”iconLeave“Duplicatemode”unchecked;Clickthepointthatwejustcreated;ThenClicktheoriginofthesketch.(Nowthetopviewisrelocatedattheorigin);Click“Exit”tocomplete.sketch••Nowwehavepositionedthethreeviewsatthecorrectplaces.Thesewillbeagoodreferenceforustobuildthe3Dinthemiddleofthescreen.•Youcanclickanystandardviewicontochangeviewingdirectionsothatyoucancompareyourworking3Dwiththereferenceataspecificviewpoint.Right-click“GeometricalSet.1”onthetreeand•select“Properties”;Enter“•Reference”asFeatureName;•Deselect“Pickable”option;Clickoktoconfirm.•Thereasonwhywechoosetheviewsareunpickableisthatwedon’twanttouseanycurvesfromthemorhaveanyrelationswiththem.Wetreatthemasthebackgroundimagesonly.TopviewSideviewFrontviewTocreate3Dcurvesfromthereferencesketches:-Select“Insert/GeometricalSet…”onthemenubar(wearegoingtobuildanewfoldertostorenewwireframe&surfaceelements);Click“Plane”iconandselect“OffsetfromPlane”;• Selectxyplaneandenter+50mmasoffsetvalue;Clickoktoconfirm.Click“Plane”iconagainandselect“OffsetfromPlane”;Selectyzplaneandenter+50mmasoffsetvalue;Clickoktoconfirm.touchingsymmetricClick“SketchtouchingsymmetricDrawanArc(R90mm),withtwoendssymmetricaboutthex-axisandthearcistouchingthey-axis;Remindedthatthearcisalittlebitlongerthanthereference;Click“Exit”icontocomplete.ClickanopenareatodeselecttheSketch(Sketch.4);Click“Sketch”iconandselect“Plane.5”;DrawanArc(R150mm),withtwoendssymmetricaboutthey-axisandthepeak11mmfromthex-axis;Remindedthatthearcshouldbealittlebitlongerthanthereference;• Click“Exit”icontocomplete.symmetric••Click“Combine”icon;Select“•Sketch.4”&“Sketch.5”;Clickoktoconfirm.•Then•Hide“Plane.4”,“Plane.5”,“Sketch.4”and“Sketch.5”ThenewcurveistheintersectionbetweentheprojectionsofbothcurvesSketch.5Sketch.4ThenewcurvecanfittheshapesforbothtopviewandfrontviewPlane.6Click“Plane”iconandselectPlane.6“OffsetfromPlane”;Selectzxplaneandenter+30.5mmasoffsetvalue;Clickoktoconfirm.Click“Sketch”iconandselectthenewplane“Plane.6”;Drawtwoarcsasshown;Remindedthattwoarcsmustbetangenttoeachother;oneendofthesmallarcistouchingthexaxis;oneendofthebiggerarcisjustneary-axis;Click“Exit”icontocomplete.Tocreatesurfacesfrom3Dcurves:-Tocreatesurfacesfrom3Dcurves:-•Click“Sweep”icon;Select“•Line”asProfiletype;•Select“WithDraftdirection”asSubtype;Select“•Combine.1”asGuidecurve1;Select•xyplaneasDraftDirection;Enter•5degasAngle;•Enter20mmasLength1;•Therewillbefourarrowsonthecurve,3blue&1orange(highlighted);•Selectthearrowat3rdquarterx,+y);(+Clickoktocomplete.•••Click“Sweep”iconagain;•Select“Line”asProfiletype;Select“•WithDraftdirection”asSubtype;•Select“Sketch.6”asGuidecurve1•SelectxyplaneasDraftDirectionEnter•5degasAngle•Enter20mmasLength1•Therewillbefourarrowsonthecurve;3blue&1orange(highlighted)•Selectthearrowat4thquarter(-x,+y)•ClickoktocompleteToduplicateasurfacebymirroring:-Click“Symmetry”icon;Select“Sweep.2”asElement;• Select“zxplane”asReference;Clickoktocomplete.Toaddafilletbetweentwosurfaces:-Click“ShapeFillet”icon;Selectsurfaces“Sweep.1”&“Sweep.2”;Clicktheredarrowsonthesurfacesiftheyarenotpointinginwards;Enter5mmasRadius;Clickoktocomplete.Click“ShapeFillet”iconagain;Selectsurfaces“Fillet.1”&“Symmetry.1”;Clicktheredarrowsonthesurfacesiftheyarenotpointinginwards;Enter5mmasRadius;ClickoktocompleteToduplicatea3Dcurvebytranslation:-Click“Translate”icon;Select“Combine.1”asElement;Select“xyplane”asDirection;Enter3.5mmasDistance;Clickoktocomplete.Hide“Combine.1”,“Plane.6”,Sketch.6”&“Fillet.2”Click“Hide/Show”iconandselectthemontreeTocreateasketchmatingwithanexternal3Dcurve:•Click“Sketch”icon;Select“zxplane”;Drawtwoarcsasshown;Remindedthattwoarcsmustbetangenttoeachother;oneendofthesmallarcistouchingthex-axis;oneendofthebiggerarcisjustneary-axisClick“intersect3Delements”icon;Select“Translate.1”ontreeorDirect-clickthecurve;Selecttheintersectionpointandclick“Construction/Standardelement”icon(Thepointshapewillbechangedfromacrosstoapoint,fromStandardelementtoConstructionelement);Addacoincidenceconstraintbetweentheendpointofthebiggerarcandtheintersectionpoint.Click“Exit”icontocompleteThearctouches“Translate.1”afterwe’veaddedacoincidenceconstraintMakeapointatthepeakMakeapointatthepeakSketch.7Click“Extremum”icon;Select“Sketch.7”aselement;Selectxyplaneasdirection;Clickoktocomplete.Tocreateaplaneatthatmaximumpoint:-Click“Plane”icon;Select“yzplane”andthen“Extremum.1”;“Parallelthroughpoint”willbeautomaticallyselectedasplanetype;Clickoktocomplete.AddacoincidenceconstraintbetweenthearcandTocreateasketchonthenew“extremum.1”constraintbetweenthearcandClick“Sketch”icon;Selectthenewplane“Plane.7”;Drawanarcasshown;addasymmetry symmetryconstraintontotheendpoints;Thenaddacoincidenceconstraintbetweenthearcandthemaximumpoint“Extremum.1”;AddadimensionalconstraintR38mmontothearc;Remark:theendpointsshouldbealittlebitoutofthebackgroundimageClick“Exit”icontocomplete.Tocreateamulti-sectionsClick“Tocreateamulti-sectionsClick“Multi-sectionssurface”icon;Select“Sketch.8”&“Translate.1”asSection(Theredarrowsshouldbepointingtothesamedirection;ifnot,clickonthearrowtoSelect“Sketch.7”asGuideClickoktocompleteTranslate.1Sketch.8Sketch.7••change)••Fillet.2Multi-sectionsSurface.1ToTrimsurfacesandformajoinedsurface:•Fillet.2Multi-sectionsSurface.1Click“Trim”iconSelectsurfaces“Fillet.2”&‘MultisectionsSurface.1”Clicktheoption“Otherside/nextelement”&“Otherside/previouselement”toobtaintheresultasshownontheright.Rememberselect“Automaticextrapolation”ClickoktocompleteToremoveaportionfromasurface:-Click“Split”icon;Trim.1Plane.7Sketch.8Translate.1Trim.1Plane.7Sketch.8Translate.1Select“Plane.7”ascuttingelement;(Itmaybenecessarytoclicktheoption“Otherside”toobtaintheresultasshownontheright.)ClickoktocompleteHide“Sketch.8”&“Translate.1”• Click“Hide/Show”iconandthenselectthemontreeR10R3R10R3R3R10DeselectthispointClick“VariableFillet”icon;Selecttheedgeonthesurface;(Thenotherportionsalongtheedgewillbeselectedautomatically)Clickthebox“Points”onthecommandmenuClicktheendpointsoftheedgesofthesurfacetoaddmorecontrolpoints;Clicktheendpointtodeselectit;Double-clickthevalueonacontrolpointtochange.(R3mmfront,R10mmback)ClickoktocompleteShow“Sketch.6”• Click“Hide/Show”iconandthenselect“sketch.6”ontreeTocreatetwostraightlines:-Sketch.6Line.1Sketch.7ZxplaneClick“LineSketch.6Line.1Sketch.7ZxplaneSelecttheendpointofSketch.6;Selectyzplane;Enter20mmasEndLength;ReverseDirectionifneeded;ClickoktocompleteClick“Line”iconagain;SelecttheendpointofSketch.7; YzplaneSelectzxplane;• Enter20mmasEndLength;(Remark:“Point-Direction”willbe•ReverseDirectionifneeded;automaticallyselectedasthelinetype)•ClickoktocompleteTocreateaconnectingcurvelinkingtwoseparatelines:-Click“ConnectCurve”icon;(FirstCurve)SelecttheendpointofSketch.7aspoint;Select“Line.2”ascurve;Select“Tangency”asContinuity;ReverseDirectionifneeded;(SecondCurve)SelecttheendpointofSketch.6aspoint;Select“Line.1”ascurve;Select“Tangency”asContinuity;ReverseDirectionifneeded;Sketch.7Sketch.7Sketch.6Thenwearegoingtomodifyitscurvaturesuchthatitisinthesimilarshapeasthereferenceimporteddrawing.Click“TopView”iconandnowwecanseethereferencetopview;Enter1.7astensionof1stCurveEnter0.4astensionof2ndCurveClickoktoconfirm

Sketch.6Connect.1Sketch.6Connect.1ZxplaneClick“Symmetry”icon;Select“Sketch.6”aselement;• Select“zxplane”asreference;Clickoktocomplete.Similarly,Click“Symmetry”iconagain;Select“Connect.1”aselement;Select“zxplane”asreference;Clickoktocomplete.Toobtainaboundaryofacombinedsurface:-Click“boundary”icon;Select“Tangencycontinuity”aspropagation type; ClickhereSelecttheedgeasshownandtherestnearbywillbeselectedautomatically;Clickoktocomplete.Remark:Acompositecurve(Boundary.1)willthenbecreatedwith5segmentcurvesembedded.Tojointwocurvesintoone:-Click“JoinTojointwocurvesintoone:-Click“Join”icon;Select“•Connect.1”&“Symmetry.3”;Clickoktocomplete.•Boundary.1Symmetry.2Connect.1Symmetry.3Sketch.6Symmetry.2Sketch.6Symmetry.2Sketch.6Sketch.7Join.1Boundary.1ClickherebeforedefiningguidesSurfaceClick“Multi-sectionssurface”icon;Select“Boundary.1”,thenselectthesurface(ensuringthatthenewsurfacewillbetangenttotheexistingsurface);Select“Join.1”;(Remark:Redarrowsonthetwosectionsshouldbepointingtothesamedirection.Ifnot,changeeitherone.)Click“…”underGuidesinthemenu;Select“Sketch.6”,“Sketch.7”&“Symmetry.2”;Clickoktocomplete.ToimprovethesmoothnessofaToimprovethesmoothnessofamulti-sectionsurface:-Oneofthecommonstrategiesistoincreasethedistancebetweentwosectionssothatthereismoreroomtotransformonesectionintotheotherone,thusdecreasingtheshrinkmarksontheresultantsurface.Theresultantsurfacehasanobviousshrinkmark,whichneedsfurtherimprovementWearegoingtoincreasethedistancebetweentwosectionsPlane.7Toimprovethesmoothnessofamulti-sectionsurface:-Plane.7Click“Plane”icon;Select“Offsetfromplane”astype;Select“Plane.7”;Enter10mmasOffsetvalue;Clickoktocomplete.Click“Split”icon;Selectthefrontsurface”EdgeFillet.1”aselementtocut;Selectthenewplane“Plane.8”ascuttingelement;Clickoktocomplete.BEFOREAFTERDouble-Click“Boundary.1”onthetreetomodify;BEFOREAFTERClickthebox“SurfaceEdge”onceinthepop-upmenu;Clicktheedgeofthefrontsurface;Clickoktoconfirm.Remark:Thebacksurface“Multi-sectionssurface.2”willbeupdatedautomatically.Asyousee,thebacksurfacebecomessmootherthanbefore.Toauto-sortthetree:-Aftermodifyingthepositionofthefrontsection,thebacksurfaceisupdatedbutthetreeisnotinlogicalsequence.Althoughitisnotamustanddoesnotaffectthefinalresult,keepingthetreeinacorrectordercanhelpusmodifythemodelmoreeasilyinfuture.e.g.“Split.2”shouldappearbefore“Boundary.1”Right-Click“GeometricalSet.2”Select“GeometricalSet.2Object/Autosort”Thenthetreewillbere-orderedinalogicalway.Multi-sectionssurface.2Split.2Multi-sectionssurface.2Split.2Click“Join”icon;SelectSurfaces“Multi-sectionssurface.2”&“Split.2”ClickoktocompleteTosavethefile:-SelectFile/Saveonthemenubar;Selectyourprojectfolder;Enter“Mouse_mastermodel_a.CATPART”asthefilename.ENDofTutorial2Aneedtocheckifthewholeskincanmeettherequiredshapeandhasnoundercutportion…•needtocheckifthewholeskincanmeettherequiredshapeandhasnoundercutportion…•Reopenthefile“Mouse_mastermodel_a.CATPART”;•Ensurethatthecurrentworkbenchis“GenerativeShapeDesign”;•Click“FrontView”icontocheckthefrontview;•Click“RightView”icontochecktherightview;•Click“TopView”icontocheckthetopview;(Remark:thesurfaceshouldmatchthethreereferenceviews)FrontRightTopPlane.4Tomakeasketch:-Plane.4Click“Sketch”icon;Select“Plane.4”ontreeDrawaprofileasshownClick“Exit”icontocompleteToprojectacurveontoasurface:-Sketch9join2Click“ProjectionSketch9join2Select“Alongadirection”astypeSelect“Sketch.9”asProjectedSelect“Join.2”assupportSelect“xyplane”asdirectionClickoktocompleteXyplaneJoin.2Project.1Join.2Project.1Sketch.9Click“split”icon;Select“Join2”asElementtocutSelect“Project.1”asCuttingelementClickoktocompleteThenHide“Sketch.9”&“Project.1”(Doitbyyourself)Tocreateasweptsurface:-Click“Tocreateasweptsurface:-Click“•sweep”icon;Select“Circle”asProfiletype;Select“Twoguidesandradius”assubtype;ClickthetwoedgesoftheholeasguidecurveEnter80mmasradius;Click“preview”icon;Click“Next“iconuntilthesolutionistheinnersmallerarc;Clickoktocomplete.•1&2.••••Split.3Sweep.3Split.3Sweep.3Click“blend”icon;SelecttheedgeofSweep.3asFirstCurve;Select“Sweep.3”asFirstSupport;SelecttheedgeofSplit.3asSecondCurve;Select“Curvature”asfirstcontinuity;Select“None”asfirsttangentbordersClickoktocompleteTocreateanotherblendsurface:-Click“blend”iconagain;SelecttheedgeofSweep.3asFirstCurve;Select“Sweep.3”asFirstSupport;SelecttheedgeofSplit.3asSecondCurve;Select“Curvature”asfirstcontinuity;Select“None”asfirsttangentbordersClickoktocompleteTojoinsurfacesasone:-Click“Join”icon;Split.3Blend.1Split.3Blend.1Sweep.3Blend.2“Split.3”Clickoktocomplete

Todothedraftanalysisonthesurface:-Click“FeatureDraftAnalysis”icon;Select‘QuickAnalysisMode”;Select“ColorScale”(Nowa3-colorscalepopsup:Green,Red&Blue);Double-clicktheuppervalueonthescaleandmodifyitas1degDouble-clickthelowervalueonthescaleandmodifyitas-1deg(i.e.Green,draft>1deg;Red,draft=0deg;Blue,draft<-1deg)Ifthebigsurfacehasnoundercut,itshouldeitherallBlueorallGreen.Ifthebigsurfacehasnoundercut,itshouldeitherallBlueorallGreen.WefindaportionwithZeroDraft(Red)alongthepartingline.Line.1DragthecompassontotheLine.1DragthecompassontotheendpointofLine1Tomodifythecurvatureoftheproblemsurface:-Right-clickon“Line.1”Select“Line.1object/Isolate”Dragthereddotofthecompassontotheendpointof“Line.1”BesurethattheW-axisofthecompassshouldbepointingupwardsandthered-dotshouldbeattheendpointofLine.1ClickLine.1once.Thelinewillbeorangeandthecompasswillbegreen.Right-clickthered-dotofthecompassandselect“Edit”;Enter“10deg”asRotationIncrement;Click“positiverotationalongW”icon;Click“Close”Nowtheportionwithzero-draftdisappearsafterwe’vemodifiedthecurvatureoftheproblemsurface.Delete“DraftAnalysis.1”fromthetreeDragthered-dotofthecompassontotheglobalcoordinatesystematthelowerright-handcornerandthenrelease.(Itwillreturntoitsoriginalstage)Now,theupperskinhasbeencompleted.DragtoglobalsystemDragtoglobalsystem&thenreleaseShow“Combine.1”Show“Combine.1”(Doityourself)Join.3Sketch.6Combine.1Wearegoingtobuildthelowerskin…Tocreateasweptsurface:-Click“Sweep”iconSelect“Line”asProfile-typeSelect“withdraftdirection”asSubtypeSelect“Combine.1”asGuideCurve1Select“xyplane”asdirectionEnter10degasAngleSelectinwarddownwardarrowEnter20mmasLength1ClickoktocompleteTocreateanothersweptsurface:-Click“Sweep”iconSelect“Line”asProfile-typeSelect“withdraftdirection”asSubtypeSelect“Sketch.6”asGuideCurve1Select“xyplane”asdirectionSelectTab”Locationvalues”Clicktwoendpointsof“Sketch.6Enter10degasAngleofEnter2degasAngleofSelectinwarddownwardarrowEnter20mmasLength1ClickoktocompleteZxplaneSweep.5ZxplaneSweep.5Click“Symmetry”icon;Select“Sweep.5”aselement;• Select“zxplane”asreference;Clickoktocomplete.TocreateaFilletbetween2surfaces:-Click“ShapeFillet”icon;Sweep.5Sweep.4Sweep.5Sweep.4Enter4.5mmasRadius;(Redarrowsshouldpointinward.Ifnot,clickitonce)Clickoktocomplete.Fillet.3Symmetry.4Fillet.3Symmetry.4Click“ShapeFillet”iconagainSelect“Fillet.3”&“Symmetry.4”Enter4.5mmasRadius(Redarrowsshouldpointinward.Ifnot,clickitonce)ClickoktocompleteDrawalineonx-axisDrawalineonx-axisClick“Sketch”iconSelectyzplaneDrawastraightlineonx-axis,whichislongenoughtogoacrossthewholemodelClick“Exit”icontoexitFillet.4Join.3AsmallgapClick“Fillet.4Join.3AsmallgapEnter120mmasLimit1;(Youmayneedtoclick“reversedirection”icontochangetheextrusiondirection)Clickoktocomplete.Hide“Sketch.10”Tojoinsurfaces:-Click“Join”iconSelect‘Join.3”&“Fillet.4”Enter0.1mmasMergingdirectiontocorrectthediscrepancybetweentwofilletsurfacesClick“ok”icontoexitTotrimandjoinsurfaces:-Click“Trim”iconTotrimandjoinsurfaces:-Click“Trim”iconSelect‘Extrude.1”&“Join.4”Click“Otherside”iconuntilyougetthesurfaceasshownClickoktocompleteFile/SaveMouse_mastermodel_a.CATPARTJoin.4Extrude.1•••ENDofTutorial2BWe’vebuilttheupperskin&thelowerskinofthemouse.Now,We’vebuilttheupperskin&thelowerskinofthemouse.Now,wearegoingtocreatepartingsurfaces,transformtheskinsurfaceintoasolid,andthensplititintoseparatecomponents.Reopenthefile“Mouse_mastermodel_a.CATPART”;Ensurethatthecurrentworkbenchis“GenerativeShapeDesign”;Click“FrontView”icontocheckthefrontview;Click“RightView”icontochecktherightview;Click“TopView”icontocheckthetopview;(Remark:thesurfaceshouldmatchthethreereferenceviews)FrontRightTop••••ToInsertaGeometricalSet:-Select“Insert/GeometricalSet…”fromthemenubar;Enter“PartingSurfaces”asName;Clickoktoconfirm.(Nowanewsetiscreated.Itisunderlined,andsoallthecomingelementswillbestoredunderthisset.)Tocreateasweptsurface:-Click“Sweep”icon;Select“Explicit”asprofiletype;Select“Withreferencesurface”assubtype;Select“Combine.1”asprofile;• Select“Sketch.6”asGuidecurve;Clickoktocomplete.Toextractacurvefromthesurface:-Click“Extract”iconSelect“Tangencycontinuity”aspropagationtypeSelecttheedgeasshownClickoktocompleteExtract.1Tocreateanextrudedsurface:-Extract.1Click“Extrude”icon;Selectthecurve“Extract.1”asprofileSelect“xyplane”asdirectionEnter3.0mmasLimit1Enter10.0mmasLimit2ClickoktocompleteHide“Geometricalset.2”(Doityourself)Tocreateanoffsetsurface:-Click“Offset”iconSelect“Extrude.2”Enter2.5mmasOffsetvalueHIDEExtract.1&HIDEExtract.1&Extrude.2Clickoktocomplete.HideExtrude.2&Extract.1(Doityourself)Toextendasurface:-Click“Extrapolate”iconSelecttheedgeofSweep.6asboundary;Select“Sweep.6”asExtrapolatedEnter20mmasLengthSelect“Assembleresult”optionClickoktocompleteExtendedbyOffset.1ExtendedbyOffset.110mmLine.3Tocreatealine:-Line.3Click“line”iconSelectthetwoendpointsofthesurfaceClickoktocompleteTocreateanextrudedsurface:-Click“Extrude”iconSelectthelineLine.3asprofileSelectyzplaneasdirectionEnter50mmasLimit1Enter0mmasLimit2Click“ReverseDirection”togetthesurfaceasshownClickoktocompleteExtrapolate.3Extrude.3Extrapolate.3Extrude.3Click“Trim”icon;Select“Extrude.3”&“Extrapolate.3”;Click“Otherside”optionuntiltheresultantisthesameasshown;Clickoktocomplete.SimilarlyClick“Trim”icon;Extrapolate.1Trim.3Extrapolate.1Trim.3Click“Otherside”optionuntiltheresultantisthesameasshown;Clickoktocomplete.ShowGeometricalset.2again(Doityourself)Sketch.9Toshowpreviouselement:-Sketch.9Click“Swapvisiblespace”iconSelect“Sketch.9”Click“Hide/Show”icon(Nowthetwoelementsaremovedtothevisiblespace)Click“Swapvisiblespace”iconTocreate2ndTocreate2ndpartingsurface:-•Click“Sketch”icon;•Selectxyplane;•Multi-SelectthethreeedgesofSketch.9•Click“Project3Delements”iconWenowhavethreeprojectedcurves(inyellowonthesketch)•Draw2verticallinestogoacrossthe•ClickExiticontoexit.Project3delementsProject3curvesontosketchDraw2linesSketch.11Click“Extrude”icon;Sketch.11Select“Sketch.11”asprofile;Select“xyplane”asdirection(automatically)Enter50mmasLimit1;Clickoktocomplete.HideallelementsexceptXyplaneExtrude.4Trim.4Extrude.4Trim.4Trim.2ZxplaneTrim.2(lastelementunderGeometricalset.2)Trim.4(underPartingSurfaces)Extrude.4(underPartingSurfaces)(Doityourself)ClosesurfaceDefaultcolorofClosesurfaceDefaultcolorofSelect“Start/MechanicalDesign/PartDesign”;Click“closesurface”icon;Clickokonthewarningmessage;Select“Trim.2”asobjecttoclose;Clickoktocomplete(Nowasolidiscreatedunder“Partbody”onthetree)Hide“GeometricalSet.2”andwewillsee solidisbluethesolid(Doityourself)Toaddafilletonthesolid:-Click“edgefillet”icon;Select“Tangency”asPropagation;Selecttheedge;Enter1mmasradius;ClickoktoconfirmTohollowthesolid:-Click“Shell”icon;Enter2.5mmasinsidethickness;Enter0mmasoutsidethickness;(Donotpickanyfaceofthesolid)ClickoktoconfirmFile/Save(TheMASTERmodelisfinished,andwearegoingtosplititintoseparateparts)Tocreatetheuppe