CATIA 曲面基础教程

1、1线框和曲面设计基础线框和曲面设计基础2课程介绍课程介绍课程目标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维零件设计维零件设计New V5 users需具备条件需具备条件Part Design, Sketcher1 day3线框和曲面设计入门线框和曲面设计入门熟悉熟悉线框和曲面设计工作台（线框和曲面设计工作台（Wireframe and Surface Design workbench） 用户界面用户界面4用户界面用户界面5线框造型线框造型熟悉线框造型基础熟悉线框造型基础创建点创建点创建线创建线创建平面创建平面创建曲线创建

2、曲线6定定义义点点对话对话框提供不同的方法框提供不同的方法创创建点建点1点点图标图标2选择选择点点类类型型选项选项中的中的一个一个类类型型3输输入点的信息在点定入点的信息在点定义义框并且框并且确确认认对话对话框的内容随着点框的内容随着点类类型型选选项项改改变变而改而改变变点点 (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点点 (2/2)CoordinatesOn curveOn planeOn surfaceCircle center不同的参数或元素创建点不同的参数或元素创建点 :Tangent on curvePoint

3、 betweenSeveral points on a curve8线线定定义对话义对话框提供不同的方法框提供不同的方法创创建建线线1点点选图标选图标2选择选择一个一个线类线类型型选项选项对话框的内容随着线类对话框的内容随着线类型选项改变而改变型选项改变而改变3输入线的信息在线定义框并输入线的信息在线定义框并且确认且确认线线 (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线线 (2/2)Line Point-PointLine Point-DirectionLine Angle/Normal to curveLine tan

4、gent to curveLine Normal to surface不同的参数或元素创建点不同的参数或元素创建点 :Bisecting line10平面定义对话框提供不同的方法创建平面平面定义对话框提供不同的方法创建平面1点点选选生成平面生成平面图标图标2选择选择一个平面一个平面类类型型选项选项对话框的内容随着平面对话框的内容随着平面类型选项改变而改变类型选项改变而改变3输入平面的信息在平面定义输入平面的信息在平面定义框并且确认框并且确认创建平面创建平面 (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创建平面创建平面 (2/5)O

5、ffset planePlane parallel through pointPlane with angle to planePlane through 3 pointsPlane through 2 linesPlane through point and line不同的参数或元素创建平面不同的参数或元素创建平面 :12创建平面创建平面 (3/5)Plane through planar curvePlane normal to curvePlane tangent to surfacePlane from equationPlane mean through pointsPlanes b

6、etween two planes13创建平面创建平面 (4/5) : 在两平面之间生成多平面在两平面之间生成多平面创建平面实例在两个平面之间创建平面实例在两个平面之间 :4 instances 14创建平面创建平面 (5/5) : 多平面生成多平面生成通过一个存在的平面通过一个存在的平面创建平面实例创建平面实例:Origin 15显显示示对话对话框，例如框，例如1点点击图标选择击图标选择曲曲线类线类型型23输入曲线的信息在曲线定义输入曲线的信息在曲线定义框并且确认框并且确认曲线曲线 (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

7、16曲线曲线 (2/3)Curve projected onto a supportCombined curveReflect lineIntersection curveCircles创建不同类型曲线创建不同类型曲线 :Parallel curve17曲线曲线 (3/3)SplineHelixCornerConnect curveSpiralConic18创建基本曲面创建基本曲面熟悉创建基本曲面熟悉创建基本曲面通过外形创建面通过外形创建面通过边界创建面通过边界创建面通过其他面创建面通过其他面创建面创建放样曲面创建放样曲面从面抽取元素从面抽取元素19通过外形创建面通过外形创建面一个闭合或不闭合

8、的轮廓给定一个闭合或不闭合的轮廓给定一根导线和一个面，或两根导一根导线和一个面，或两根导线，可以创建一个扫掠面线，可以创建一个扫掠面一个闭合或不闭合的一个闭合或不闭合的轮廓给定一个方向和限轮廓给定一个方向和限制，创建一个拉伸面制，创建一个拉伸面给定一个旋转轴和角度可以创给定一个旋转轴和角度可以创建一个旋转面建一个旋转面20创建球体创建球体21通过边界创建面通过边界创建面The blend surface is created between two curves lying each on a support ; the evolution of the surface between the

9、 two curves is defined by parameters.The fill surface is created between joined curves which may lie on a support ; the evolution of the surface inside the contour is defined by parameters. 22从其他曲面创建曲面从其他曲面创建曲面You can create several offset surfaces at the same time. The offset surface is created fro

10、m an existing surface, giving an offset value and a direction. The resulting surface is parallel to the initial one. 23创建放样曲面创建放样曲面几个参数能建立定义放样曲面几个参数能建立定义放样曲面 :TangencyGuide curveClosing pointSpineCouplingLimitationManual coupling24几何操作功能几何操作功能修补元素修补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转换适用转换推断元素推断元素创建接近元

11、素创建接近元素创建阵列创建阵列25修补元素修补元素当合并几个曲面时修补操作当合并几个曲面时修补操作可以填充间隙可以填充间隙用用Join这个操作可以集合一个单一元这个操作可以集合一个单一元素或几个相邻的曲面，几个相邻的曲素或几个相邻的曲面，几个相邻的曲线线分解一个多元素曲面或曲线到独分解一个多元素曲面或曲线到独立数据元立数据元Split surfaceRestored surface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 element.26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修剪元素只可以保留每

12、个元素的一部分的一部分用一个或几个几何元素（用一个或几个几何元素（Cutting elements）去切割）去切割另一个几何元素（另一个几何元素（Element to cut） 不论是否有支撑定义，切割和修不论是否有支撑定义，切割和修剪都将被执行剪都将被执行27从曲面提取元素从曲面提取元素Face extractionEdge extraction可以从一个曲面给予传播条件提取边界，曲面或曲线可以从一个曲面给予传播条件提取边界，曲面或曲线Boundary extraction with limitsThe Complementary mode option allows you to de-s

13、elect the elements to extract and select the non-selected elements.萃取一些元素萃取一些元素28显显示示转换对话转换对话框框1点点击击如何一个如何一个转换图标转换图标23输入转换的信息在定义框并且确认输入转换的信息在定义框并且确认转换转换 (1/2)Transformations are used to modify the size, location, orientation, etc. of a wireframe or a surface element.一个操作可以同时转换几个元一个操作可以同时转换几个元素素29转换转

14、换 (2/2)六种转换类型:TranslationRotationSymmetryScalingAffinityAxis to Axis 30推断元素推断元素Finally you will define the type of continuity and transition.First select the element boundary which will be extrapolated, then the element itself.You will then choose the extrapolation mode : length or limit.You may hav

15、e to extrapolate a curve or surface to extend it to other geometry and thus be able to later trim, split or intersect these elements.31创建接近元素创建接近元素The original element is transferred to the Hide space.You will select the multiple element from which you want to create the Near element.You will then s

16、elect a reference element, i.e. a point located next to the entity to be defined as Near element.Some construction elements are made up of several entities. You may need to use only part of a multi-entity element.You can create near elements from sketches or surfaces.32创建阵列创建阵列Reference elementSurfa

17、ce to patternYou can create circular or rectangular patterns of wireframe or surface elements.Element to patternReference element33完成几何元素在零件设计工作台完成几何元素在零件设计工作台通过曲面创建实体通过曲面创建实体34For each type of feature a dialog box is displayed.Select the surface to be processed.1Click on the appropriate Surface-Bas

18、ed Feature icon.23Confirm feature creation.通过曲面创建实体通过曲面创建实体(1/2)You may need to create a surface just for using it in a solid body. The surface is integrated into the body design.35通过曲面创建实体通过曲面创建实体(2/2)Split BodyThicken SurfaceClose SurfaceSew SurfaceFour ways of creating solids from surfaces are av

19、ailable :36修改几何元素修改几何元素 编辑元素编辑元素37编辑元素编辑元素The surface is updated according to the new parameters.You will modify the axis and the angle of revolution of this surface.You can modify parameters either entering new values or making new selections.You can edit elements after part creation to change some

20、 of the parameters and thus make a new version of the part.38工具运用工具运用You will become familiar with some tools used for managing wireframe and surfaces.Stacking CommandsManipulating ElementsCreating Datum FeaturesWorking on a SupportUpdating a PartSelecting and Renaming an Open BodyMoving an Element

21、within an Open BodyApplying Material onto a Surface39You define the parameters of the construction element.Stacking CommandsWhile creating an element you may need a construction element that you will create on the fly.The construction element is created and selected at the same time.When using the s

22、tacking command capability you can check the status of the stack in the Running Commands window.Stacking commands allows you to create construction elements while creating an element which requires those construction elements.40Manipulating ElementsYou will cut or copy one or several elements.Then s

23、elect the element after which you want to position the cut/copied elements and paste them.orYou can also delete an element from the specification tree.41创建数据特征创建数据特征Clicking on the Create Datum icon de-activates the History mode.You will then create the datum feature element and finally modify one o

24、f its parents.A datum feature is an element which has no link (history) with the elements used to build it (parent elements). 42Working on a Support (1/2)You can select a plane or a surface to use it as a support for further element creation.Support plane = YZWith the Snap to Point capability the cr

25、eated points are located at the nearest intersection of the grid.Support surface = Extrude.1When you create a point after selecting the surface as a support the Point Definition window automatically displays the option On surface.43Working on a Support (2/2)Creating a Support from a PlaneGrids are persistent, they are added to the specification tree.To deactivate the current grid :With the contextual menuor using the Working Support Activity iconDirectly change the grid settings44更新一个零件更新一个零件更改默更改默认认更新模式更新模