CATIA 曲面基础教程

1,线框和曲面设计基础,2,课程介绍,课程目标在这个课程介绍如何创建线框和用线框和基本曲面特征装饰3维零件设计NewV5users需具备条件PartDesign,Sketcher,1day,3,线框和曲面设计入门,熟悉线框和曲面设计工作台（WireframeandSurfaceDesignworkbench）用户界面,4,用户界面,5,线框造型,熟悉线框造型基础创建点创建线创建平面创建曲线,6,定义点对话框提供不同的方法创建点,1,点图标,2,选择点类型选项中的一个类型,3,输入点的信息在点定义框并且确认,对话框的内容随着点类型选项改变而改变,点(1/2),点用来支持所有几何单元的创建并用来作为所有创建的参考,7,点(2/2),Coordinates,Oncurve,Onplane,Onsurface,Circlecenter,不同的参数或元素创建点:,Tangentoncurve,Pointbetween,Severalpointsonacurve,8,线定义对话框提供不同的方法创建线,1,点选图标,2,选择一个线类型选项,对话框的内容随着线类型选项改变而改变,3,输入线的信息在线定义框并且确认,线(1/2),线可作为引导线，参考，轴，方向或加入创建其他几何元素,9,线(2/2),LinePoint-Point,LinePoint-Direction,LineAngle/Normaltocurve,Linetangenttocurve,LineNormaltosurface,不同的参数或元素创建点:,Bisectingline,10,平面定义对话框提供不同的方法创建平面,1,点选生成平面图标,2,选择一个平面类型选项,对话框的内容随着平面类型选项改变而改变,3,输入平面的信息在平面定义框并且确认,创建平面(1/5),用平面作为参考元素去创建新的几何元素或切断元素,11,创建平面(2/5),Offsetplane,Planeparallelthroughpoint,Planewithangletoplane,Planethrough3points,Planethrough2lines,Planethroughpointandline,不同的参数或元素创建平面:,12,创建平面(3/5),Planethroughplanarcurve,Planenormaltocurve,Planetangenttosurface,Planefromequation,Planemeanthroughpoints,Planesbetweentwoplanes,13,创建平面(4/5):在两平面之间生成多平面,创建平面实例在两个平面之间:,4instances,14,创建平面(5/5):多平面生成,通过一个存在的平面创建平面实例:,Origin,15,显示对话框，例如,1,点击图标选择曲线类型,2,3,输入曲线的信息在曲线定义框并且确认,曲线(1/3),曲线作为引导线或参考创建其他几何元素或作为面的边界,16,曲线(2/3),Curveprojectedontoasupport,Combinedcurve,Reflectline,Intersectioncurve,Circles,创建不同类型曲线:,Parallelcurve,17,曲线(3/3),Spline,Helix,Corner,Connectcurve,Spiral,Conic,18,创建基本曲面,熟悉创建基本曲面通过外形创建面通过边界创建面通过其他面创建面创建放样曲面从面抽取元素,19,通过外形创建面,一个闭合或不闭合的轮廓给定一根导线和一个面，或两根导线，可以创建一个扫掠面,一个闭合或不闭合的轮廓给定一个方向和限制，创建一个拉伸面,给定一个旋转轴和角度可以创建一个旋转面,20,创建球体,21,通过边界创建面,Theblendsurfaceiscreatedbetweentwocurveslyingeachonasupport;theevolutionofthesurfacebetweenthetwocurvesisdefinedbyparameters.,Thefillsurfaceiscreatedbetweenjoinedcurveswhichmaylieonasupport;theevolutionofthesurfaceinsidethecontourisdefinedbyparameters.,22,从其他曲面创建曲面,Youcancreateseveraloffsetsurfacesatthesametime.,Theoffsetsurfaceiscreatedfromanexistingsurface,givinganoffsetvalueandadirection.Theresultingsurfaceisparalleltotheinitialone.,23,创建放样曲面,几个参数能建立定义放样曲面:,Tangency,Guidecurve,Closingpoint,Spine,Coupling,Limitation,Manualcoupling,24,几何操作功能,修补元素切割和修剪元素从曲面提取元素适用转换推断元素创建接近元素创建阵列,25,修补元素,当合并几个曲面时修补操作可以填充间隙,用Join这个操作可以集合一个单一元素或几个相邻的曲面，几个相邻的曲线,分解一个多元素曲面或曲线到独立数据元,Splitsurface,Restoredsurface,恢复整个面即使面被多次修剪。Therestoredsurfaceisadatumelement.,26,切割和修剪元素,修剪元素只可以保留每个元素的一部分,用一个或几个几何元素（Cuttingelements）去切割另一个几何元素（Elementtocut）,不论是否有支撑定义，切割和修剪都将被执行,27,从曲面提取元素,Faceextraction,Edgeextraction,可以从一个曲面给予传播条件提取边界，曲面或曲线,Boundaryextractionwithlimits,TheComplementarymodeoptionallowsyoutode-selecttheelementstoextractandselectthenon-selectedelements.,萃取一些元素,28,显示转换对话框,1,点击如何一个转换图标,2,3,输入转换的信息在定义框并且确认,转换(1/2),Transformationsareusedtomodifythesize,location,orientation,etc.ofawireframeorasurfaceelement.,一个操作可以同时转换几个元素,29,转换(2/2),六种转换类型:,Translation,Rotation,Symmetry,Scaling,Affinity,AxistoAxis,30,推断元素,Finallyyouwilldefinethetypeofcontinuityandtransition.,Firstselecttheelementboundarywhichwillbeextrapolated,thentheelementitself.,Youwillthenchoosetheextrapolationmode:lengthorlimit.,Youmayhavetoextrapolateacurveorsurfacetoextendittoothergeometryandthusbeabletolatertrim,splitorintersecttheseelements.,31,创建接近元素,TheoriginalelementistransferredtotheHidespace.,YouwillselectthemultipleelementfromwhichyouwanttocreatetheNearelement.,Youwillthenselectareferenceelement,i.e.apointlocatednexttotheentitytobedefinedasNearelement.,Someconstructionelementsaremadeupofseveralentities.Youmayneedtouseonlypartofamulti-entityelement.,Youcancreatenearelementsfromsketchesorsurfaces.,32,创建阵列,Referenceelement,Surfacetopattern,Youcancreatecircularorrectangularpatternsofwireframeorsurfaceelements.,Elementtopattern,Referenceelement,33,完成几何元素在零件设计工作台,通过曲面创建实体,34,Foreachtypeoffeatureadialogboxisdisplayed.Selectthesurfacetobeprocessed.,1,ClickontheappropriateSurface-BasedFeatureicon.,2,3,Confirmfeaturecreation.,通过曲面创建实体(1/2),Youmayneedtocreateasurfacejustforusingitinasolidbody.Thesurfaceisintegratedintothebodydesign.,35,通过曲面创建实体(2/2),SplitBody,ThickenSurface,CloseSurface,SewSurface,Fourwaysofcreatingsolidsfromsurfacesareavailable:,36,修改几何元素,编辑元素,37,编辑元素,Thesurfaceisupdatedaccordingtothenewparameters.,Youwillmodifytheaxisandtheangleofrevolutionofthissurface.,Youcanmodifyparameterseitherenteringnewvaluesormakingnewselections.,Youcaneditelementsafterpartcreationtochangesomeoftheparametersandthusmakeanewversionofthepart.,38,工具运用,Youwillbecomefamiliarwithsometoolsusedformanagingwireframeandsurfaces.StackingCommandsManipulatingElementsCreatingDatumFeaturesWorkingonaSupportUpdatingaPartSelectingandRenaminganOpenBodyMovinganElementwithinanOpenBodyApplyingMaterialontoaSurface,39,Youdefinetheparametersoftheconstructionelement.,StackingCommands,Whilecreatinganelementyoumayneedaconstructionelementthatyouwillcreateonthefly.,Theconstructionelementiscreatedandselectedatthesametime.,WhenusingthestackingcommandcapabilityyoucancheckthestatusofthestackintheRunningCommandswindow.,Stackingcommandsallowsyoutocreateconstructionelementswhilecreatinganelementwhichrequiresthoseconstructionelements.,40,ManipulatingElements,Youwillcutorcopyoneorseveralelements.,Thenselecttheelementafterwhichyouwanttopositionthecut/copiedelementsandpastethem.,or,Youcanalsodeleteanelementfromthespecificationtree.,41,创建数据特征,ClickingontheCreateDatumiconde-activatestheHistorymode.,Youwillthencreatethedatumfeatureelement,andfinallymodifyoneofitsparents.,Adatumfeatureisanelementwhichhasnolink(history)withtheelementsusedtobuildit(parentelements).,42,WorkingonaSupport(1/2),Youcanselectaplaneorasurfacetouseitasasupportforfurtherelementcreation.,Supportplane=YZWiththeSnaptoPointcapabilitythecreatedpointsarelocatedatthenearestintersectionofthegrid.,Supportsurface=Extrude.1WhenyoucreateapointafterselectingthesurfaceasasupportthePointDefinitionwindowautomaticallydisplaystheoptionOnsurface.,43,WorkingonaSupport(2/2),CreatingaSupportfromaPlane,Gridsarepersistent,theyareaddedtothespecificationtree.,Todeactivatethecurrentgrid:,Withthecontextualmenu,orusingtheWorkingSupportActivityicon,Directly