CATIA曲面基础教程.ppt

线框和曲面框和曲面设计基基础1a课程介程介绍课程目程目标在在这个个课程介程介绍如何如何创建建线框和用框和用线框和基本曲面特征装框和基本曲面特征装饰3 3维零件零件设计New V5New V5 users users需具需具备条件条件Part Design, SketcherPart Design, Sketcher1 day2a线框和曲面框和曲面设计入入门熟悉熟悉线框和曲面框和曲面设计工作台（工作台（Wireframe and Surface Design workbenchWireframe and Surface Design workbench）） 用用户界面界面3a用用户界面界面4a线框造型框造型熟悉熟悉线框造型基框造型基础创建点建点创建建线创建平面建平面创建曲建曲线5a定定义点点对话框提供不同的方法框提供不同的方法创建点建点1 1点点图标2 2选择点点类型型选项中的中的一个一个类型型3 3输入点的信息在点定入点的信息在点定义框并且确框并且确认对话框的内容随着点框的内容随着点类型型选项改改变而改而改变点点 (1/2)(1/2)点用来支持所有几何点用来支持所有几何单元的元的创建并用来作建并用来作为所有所有创建的参考建的参考6a点点 (2/2)(2/2)CoordinatesCoordinatesOn curveOn curveOn planeOn planeOn surfaceOn surfaceCircle Circle centercenter不同的参数或元素不同的参数或元素创建点建点 : :Tangent on curveTangent on curvePoint betweenPoint betweenSeveral points Several points on a curveon a curve7a线定定义对话框提供不同的方法框提供不同的方法创建建线1 1点点选图标2 2选择一个一个线类型型选项对话框的内容随着框的内容随着线类型型选项改改变而改而改变3 3输入入线的信息在的信息定定义框并框并且确且确认线 (1/2)(1/2)线可作可作为引引导线，参考，，参考，轴，方向或加入，方向或加入创建其他几何元素建其他几何元素8a线 (2/2)(2/2)Line Point-PointLine Point-PointLine Point-DirectionLine Point-DirectionLine Angle/Normal to curveLine Angle/Normal to curveLine tangent to curveLine tangent to curveLine Normal to surfaceLine Normal to surface不同的参数或元素不同的参数或元素创建点建点 : :Bisecting Bisecting lineline9a平面定平面定义对话框提供不同的方法框提供不同的方法创建平面建平面1 1点点选生成平面生成平面图标2 2选择一个平面一个平面类型型选项对话框的内容随着平面框的内容随着平面类型型选项改改变而改而改变3 3输入平面的信息在平面定入平面的信息在平面定义框并且确框并且确认创建平面建平面 (1/5)(1/5)用平面作用平面作为参考元素去参考元素去创建新的几何元素或切断元素建新的几何元素或切断元素 10a创建平面建平面 (2/5)(2/5)Offset planeOffset planePlane parallel through pointPlane parallel through pointPlane with angle to Plane with angle to planeplanePlane through 3 pointsPlane through 3 pointsPlane through 2 linesPlane through 2 linesPlane through Plane through point and linepoint and line不同的参数或元素不同的参数或元素创建平面建平面 : :11a创建平面建平面 (3/5)(3/5)Plane through planar curvePlane through planar curvePlane normal to curvePlane normal to curvePlane tangent Plane tangent to surfaceto surfacePlane from Plane from equationequationPlane mean Plane mean through pointsthrough pointsPlanes between Planes between two planestwo planes12a创建平面建平面 (4(4/5/5) : ) : 在两平面之在两平面之间生成多平面生成多平面创建平面建平面实例在两个平面之例在两个平面之间 : :4 instances 4 instances 13a创建平面建平面 (5(5/5/5) : ) : 多平面生成多平面生成通通过一个存在的平面一个存在的平面创建平面建平面实例例: :Origin Origin 14a显示示对话框，例如框，例如1 1点点击图标选择曲曲线类型型2 23 3输入曲入曲线的信息在曲的信息在曲线定定义框并且确框并且确认曲曲线 (1/3)(1/3)曲曲线作作为引引导线或参考或参考创建其他几何元素或作建其他几何元素或作为面的面的边界界15a曲曲线 (2/3)(2/3)Curve projected Curve projected onto a supportonto a supportCombined curveCombined curveReflect Reflect linelineIntersection Intersection curvecurveCirclesCircles创建不同建不同类型曲型曲线 : :Parallel Parallel curvecurve16a曲曲线 (3/3)(3/3)SplineSplineHelixHelixCornerCornerConnect curveConnect curveSpiralSpiralConicConic17a创建基本曲面建基本曲面熟悉熟悉创建基本曲面建基本曲面通通过外形外形创建面建面通通过边界界创建面建面通通过其他面其他面创建面建面创建放建放样曲面曲面从面抽取元素从面抽取元素18a通通过外形外形创建面建面一个一个闭合或不合或不闭合的合的轮廓廓给定定一根一根导线和一个面，或两根和一个面，或两根导线，可以，可以创建一个建一个扫掠面掠面一个一个闭合或不合或不闭合的合的轮廓廓给定一个方向和限定一个方向和限制，制，创建一个拉伸面建一个拉伸面给定一个旋定一个旋转轴和角度可以和角度可以创建一个旋建一个旋转面面19a创建球体建球体20a通通过边界界创建面建面The blend surface is created The blend surface is created between two curves lying each on between two curves lying each on a support ; the evolution of the a support ; the evolution of the surface between the two curves surface between the two curves is defined by parameters.is defined by parameters.The fill surface is created The fill surface is created between joined curves which may between joined curves which may lie on a support ; the evolution lie on a support ; the evolution of the surface inside the of the surface inside the contour is defined by contour is defined by parameters. parameters. 21a从其他曲面从其他曲面创建曲面建曲面You can create You can create several offset several offset surfaces at surfaces at the same time. the same time. The offset surface is The offset surface is created from an existing created from an existing surface, giving an offset surface, giving an offset value and a direction. The value and a direction. The resulting surface is resulting surface is parallel to the initial parallel to the initial one. one. 22a创建放建放样曲面曲面几个参数能建立定几个参数能建立定义放放样曲面曲面 : :TangencyTangencyGuide curveGuide curveClosing Closing pointpointSpineSpineCouplingCouplingLimitationLimitationManual couplingManual coupling23a几何操作功能几何操作功能修修补元素元素切割和修剪元素切割和修剪元素从曲面提取元素从曲面提取元素适用适用转换推断元素推断元素创建接近元素建接近元素创建建阵列列24a修修补元素元素当合并几个曲面当合并几个曲面时修修补操作操作可以填充可以填充间隙隙用用JoinJoin这个操作可以集合一个个操作可以集合一个单一元一元素或几个相素或几个相邻的曲面，几个相的曲面，几个相邻的曲的曲线分解一个多元素曲面或曲分解一个多元素曲面或曲线到独到独立数据元立数据元Split Split surfacesurfaceRestored Restored surfacesurface恢复整个面即使面被多次修剪。

恢复整个面即使面被多次修剪 The restored surface is a datum The restored surface is a datum element.element.25a切割和修剪元素切割和修剪元素修剪元素只可以保留每个元素的修剪元素只可以保留每个元素的一部分一部分用一个或几个几何元素用一个或几个几何元素（（Cutting elementsCutting elements）去切）去切割另一个几何元素割另一个几何元素（（Element to cutElement to cut）） 不不论是否有支撑定是否有支撑定义，切割和修，切割和修剪都将被剪都将被执行行26a从曲面提取元素从曲面提取元素Face Face extractionextractionEdge Edge extractioextraction n可以从一个曲面可以从一个曲面给予予传播条件提取播条件提取边界，曲面或曲界，曲面或曲线Boundary Boundary extraction extraction with limitswith limitsThe Complementary The Complementary mode option allows mode option allows you to de-select you to de-select the elements to the elements to extract and select extract and select the non-selected the non-selected elements.elements.萃取一些元素萃取一些元素27a显示示转换对话框框1 1点点击如何一个如何一个转换图标2 23 3输入入转换的信息在定的信息在定义框并且确框并且确认转换 (1/2)(1/2)Transformations are used to modify the size, location, orientation, etc. of a wireframe or a surface Transformations are used to modify the size, location, orientation, etc. of a wireframe or a surface element.element.一个操作可以同一个操作可以同时转换几个元素几个元素28a转换 (2/2)(2/2)六种转换类型: :TranslationTranslationRotationRotationSymmetrySymmetryScalingScalingAffinityAffinityAxis to Axis Axis to Axis 29a推断元素推断元素Finally you will Finally you will define the type of define the type of continuity and continuity and transition.transition.First select the First select the element boundary which element boundary which will be extrapolated, will be extrapolated, then the element then the element itself.itself.You will then choose the You will then choose the extrapolation mode : extrapolation mode : length or limit.length or limit.You may have to extrapolate a curve or surface to extend it to other geometry and thus be You may have to extrapolate a curve or surface to extend it to other geometry and thus be able to later trim, split or intersect these elements.able to later trim, split or intersect these elements.30a创建接近元素建接近元素The original The original element is element is transferred to the transferred to the Hide space.Hide space.You will select the multiple You will select the multiple element from which you want element from which you want to create the Near element.to create the Near element.You will then select a You will then select a reference element, i.e. a reference element, i.e. a point located next to the point located next to the entity to be defined as Near entity to be defined as Near element.element.Some construction elements are made up of several entities. You may need to use only part of a multi-entity Some construction elements are made up of several entities. You may need to use only part of a multi-entity element.element.You can create You can create near elementsnear elements fromfrom sketches or sketches or surfacessurfaces. .31a创建建阵列列Reference Reference elementelementSurface to Surface to patternpatternYou can create circular or rectangular patterns of wireframe or surface elements.You can create circular or rectangular patterns of wireframe or surface elements.Element to Element to patternpatternReference Reference elementelement32a完成几何元素在零件完成几何元素在零件设计工作台工作台通通过曲面曲面创建建实体体33aFor each type of feature a dialog box is displayed.For each type of feature a dialog box is displayed.Select the surface to be processed.Select the surface to be processed.1 1Click on the appropriate Surface-Based Feature Click on the appropriate Surface-Based Feature icon.icon.2 23 3Confirm feature creation.Confirm feature creation.通通过曲面曲面创建建实体体(1/2)(1/2)You may need to create a surface just for using it in a solid body. The surface is You may need to create a surface just for using it in a solid body. The surface is integrated into the body design.integrated into the body design.34a通通过曲面曲面创建建实体体(2/2)(2/2)Split BodySplit BodyThicken SurfaceThicken SurfaceClose SurfaceClose SurfaceSew SurfaceSew SurfaceFour ways of creating solids from surfaces are available :Four ways of creating solids from surfaces are available :35a修改几何元素修改几何元素 编辑元素元素36a编辑元素元素The surface is The surface is updated according to updated according to the new parameters.the new parameters.You will modify the axis You will modify the axis and the angle of and the angle of revolution of this revolution of this surface.surface.You can modify parameters You can modify parameters either entering new values either entering new values or making new selections.or making new selections.You can edit elements after part creation to change some of the parameters and thus make a new version of the You can edit elements after part creation to change some of the parameters and thus make a new version of the part.part.37a工具运用工具运用You You will become familiar with will become familiar with some tools used for managing wireframe and some tools used for managing wireframe and surfaces.surfaces.Stacking CommandsStacking CommandsManipulating ElementsManipulating ElementsCreating Datum FeaturesCreating Datum FeaturesWorking on a SupportWorking on a SupportUpdating a PartUpdating a PartSelecting and Renaming an Open BodySelecting and Renaming an Open BodyMoving an Element within an Open BodyMoving an Element within an Open BodyApplying Material onto a SurfaceApplying Material onto a Surface38aYou define the parameters You define the parameters of the construction of the construction element.element.Stacking CommandsStacking CommandsWhile creating an element While creating an element you may need a construction you may need a construction element that you will create element that you will create on the fly.on the fly.The construction element The construction element is created and selected is created and selected at the same time.at the same time.When using the stacking command When using the stacking command capability you can check the capability you can check the status of the stack in the Running status of the stack in the Running Commands window.Commands window.Stacking commands allows you to create construction elements while creating an element which Stacking commands allows you to create construction elements while creating an element which requires those construction elements.requires those construction elements.39aManipulating ElementsManipulating ElementsYou will cut or copy You will cut or copy one or several one or several elements.elements.Then select the element Then select the element after which you want to after which you want to position the cut/copied position the cut/copied elements and paste them.elements and paste them.ororYou can also delete You can also delete an element from the an element from the specification tree.specification tree.40a创建数据特征建数据特征Clicking on the Create Clicking on the Create Datum icon de-activates Datum icon de-activates the History mode.the History mode.You will then create the You will then create the datum feature element…datum feature element…… and finally … and finally modify one of its modify one of its parents.parents.A datum feature is an element which has no link (history) with the elements used to build it (parent A datum feature is an element which has no link (history) with the elements used to build it (parent elements). elements). 41aWorking on a Support (1/2)Working on a Support (1/2)You can select a plane or a surface to use it as a support for further element creation.You can select a plane or a surface to use it as a support for further element creation.Support plane = YZSupport plane = YZWith the ‘Snap to Point’ With the ‘Snap to Point’ capability the created points are capability the created points are located at the nearest located at the nearest intersection of the grid.intersection of the grid.Support surface = Extrude.1Support surface = Extrude.1When you create a point after selecting When you create a point after selecting the surface as a support the Point the surface as a support the Point Definition window automatically Definition window automatically displays the option ‘On surface’.displays the option ‘On surface’.42aWorking on a Support (2/2)Working on a Support (2/2)Creating a Support from a PlaneCreating a Support from a PlaneGrids are persistent, they are Grids are persistent, they are added to the specification added to the specification tree.tree.To deactivate the current grid To deactivate the current grid : :With the contextual menuWith the contextual menuor using the Working Support or using the Working Support Activity iconActivity iconDirectly change Directly change the grid the grid settingssettings43a更新一个零件更新一个零件更改默更改默认更新模式更新模式 Tools + Tools + Options + Shape.Options + Shape.Note that the chosen update Note that the chosen update mode is the same in Wireframe mode is the same in Wireframe and Surfaces and in Part and Surfaces and in Part Design.Design.可以可以选择自自动或手或手动更新模式。

更新模式44a选择一个一个 Open BodyOpen Body这个功能允个功能允许快速的快速的选择一个指定的一个指定的Open BodyOpen Body, (Open , (Open Body or PartBody)Body or PartBody)Body Body 选择器器45a在在 Open BodyOpen Body里移里移动一个元素一个元素可以不修改几何元素把它移可以不修改几何元素把它移动到另一个到另一个OPEN OPEN BODYBODYThe element is inserted The element is inserted above the element above the element selected as destination.selected as destination.46a曲面曲面连接接处允允许用用户检查 : :• the distance (mm)the distance (mm)• the tangency (deg)the tangency (deg)• the curvature (%)the curvature (%)沿一个沿一个边界界缝合两个面合两个面Distance AnalysisDistance AnalysisTangency AnalysisTangency AnalysisCurvature AnalysisCurvature Analysis检查曲面曲面间的的连接接47a检查曲曲线间的的连接接(1/2)(1/2)Distance analysisDistance analysisTangency analysisTangency analysisCurvature analysisCurvature analysis三个分析三个分析类型型 : :- 距离分析距离分析- 相切分析相切分析- 曲率分析曲率分析48a检查曲曲线间的的连接接 (2/2)(2/2)Quick Quick 选项允允许用用户勾勾选使得不使得不连续 不不侦测如果相切和曲率不如果相切和曲率不连续都被都被侦测, , 仅仅相相切不切不连续显示示在曲在曲线上上显示最大的不示最大的不连续值 49a万万题上海同捷学院上海同捷学院EmailEmail：：wtt0822@126.COMwtt0822@126.COMmsn: msn: squirrel_0822@squirrel_0822@50a。