《catia教程.ppt》由会员分享，可在线阅读，更多相关《catia教程.ppt（37页珍藏版）》请在taowenge.com淘文阁网|工程机械CAD图纸|机械工程制图|CAD装配图下载|SolidWorks_CaTia_CAD_UG_PROE_设计图分享下载上搜索。
1、SketcherCATIA Training Exercises1Copyright DASSAULT SYSTEMES 2002Table of Contents1.Sketching Simple Profiles:Recap Exercisep.32.Sketching Pre-Defined Profiles:Recap Exercisep.63.Editing Profiles:Recap Exercisep.84.Operations on Profiles:Recap Exercise p.105.Setting Constraints:Recap Exercise I p.12
2、6.Setting Constraints:Recap Exercise II p.147.Managing Sketches:Recap Exercise p.168.Master Exercise:Gasket Presentationp.189.Master Exercise:Gasket(Step 1)p.2110.Master Exercise:Gasket(Step 2)p.2411.Master Exercise:Gasket(Step 3)p.2612.Master Exercise:Gasket(Step 4)p.2813.Master Exercise:Gasket(Ste
3、p 5)p.3014.Master Exercise:Gasket(Step 6)p.352Copyright DASSAULT SYSTEMES 2002ExerciseSketching Simple Profiles:Recap ExerciseCreate a simple profile made up of Lines,a Spline,an Arc,and an AxisExtra Credit:Create a solid of revolution from your profile and shell it 5 min.3Copyright DASSAULT SYSTEME
4、S 2002Do It Yourself(1/2)Sketching Simple Profiles1-Lines2-Spline3-Arc4-AxisPt5 4Copyright DASSAULT SYSTEMES 20021-Lines2-Spline3-Arc4-AxisLoad:CATSKE_Ex_Recap_Sketching_Simple_Profile.CATPartDo It Yourself(2/2)Sketching Simple Profiles5Copyright DASSAULT SYSTEMES 2002ExerciseSketching Pre-Defined P
5、rofiles Recap ExerciseCreate two Pre-Defined profiles-a Hexagon and a KeyholeExtra Credit:Extrude a solid Pad from your profileCreate two Pre-Defined profiles-a Hexagon and a KeyholeExtra Credit:Extrude a solid Pad from your profile 10 min.6Copyright DASSAULT SYSTEMES 2002Do It YourselfCreate these
6、profiles by freehandOptional:Please check with your Instructor if you have any questions on how to create a pad from your profilePt1 Load:CATSKE_Ex_Recap_Sketching_Predefined_Profiles.CATPart7Copyright DASSAULT SYSTEMES 2002ExerciseEditing Profiles:Recap ExerciseCreate a RectangleModify the rectangu
7、lar profile Surfaces10 min.8Copyright DASSAULT SYSTEMES 2002Do It YourselfCreate these profiles by freehand1-Create the Rectangle2-Modify the length and width of the rectangle by dragging lines3-Modify the entire shape of the rectangle by dragging its endpointsPt1 Load:CATSKE_Ex_Recap_Editing_Profil
8、e.CATPart9Copyright DASSAULT SYSTEMES 2002ExerciseOperations on Profiles:Recap ExerciseDesign in ContextProject 3D Elements into your SketchTrim your profile with Corners and ChamfersSurfaces15 min.10Copyright DASSAULT SYSTEMES 2002Do It YourselfIn order to get into your Sketch plane:Select the Sket
9、cher Icon and the plane1-Project the Splines from the Supports 2-Draw two horizontal lines passing through the projected Splines then trim them using the Corner and Chamfer tools3-Optional:Extrude a Pad using your profilePt1 Load:CATSKE_Ex_Recap_Operations_On_Profiles.CATPart11Copyright DASSAULT SYS
10、TEMES 2002ExerciseSetting Constraints:Recap Exercise ICreate constraints and dimension between the sketch and 3D geometry15 min.12Copyright DASSAULT SYSTEMES 2002Do It YourselfMake the circle in your Sketch concentric to the cylinder on the Male part.Put a dimension on the circle.Dimension the recta
11、ngular profile with respect to the faces on the Male partOptional:Create the Female Pad from your profilePt5 Pt1 Load:CATSKE_Ex_Recap_Setting_Constraints_1.CATPart13Copyright DASSAULT SYSTEMES 2002ExerciseSetting Constraints:Recap Exercise IIStudy a mechanism using theSketchers AnimateConstraint too
12、lWireframeSurfaces15 min.14Copyright DASSAULT SYSTEMES 2002Do It YourselfMake the 62 degree angle vary from 62 to-62 to study the constraints existing between the different geometrical elementsPt5 Pt1 Load:CATSKE_Ex_Recap_Setting_Constraints_2.CATPart15Copyright DASSAULT SYSTEMES 2002ExerciseManagin
13、g Sketches:Recap ExerciseCreate an Angled PlaneChange the Sketch Support of the part to this new planeSurfaces10 min.16Copyright DASSAULT SYSTEMES 2002Do It Yourself1-Create a plane at 45 Degrees to the XY plane using the line provided2-Change the Sketch Support for Sketch.1 to this new planePt1 Loa
14、d:CATSKE_Ex_Recap_Managing_Sketches.CATPart17Copyright DASSAULT SYSTEMES 2002Gasket:PresentationIn this exercise you will have the chance to try out various tools for Sketching and Constraining by designing a profile for a Gasket.You will test the integrity of your Sketch by extruding the solid Gask
15、et using the Pad tool from the Part Design WorkbenchFinally,you will see how easy it is to modify a sketch55 min.Master Exercise 18Copyright DASSAULT SYSTEMES 2002Design Intent:GasketA Gasket is a part used to make a joint fluid tight.It can be made of rubber,foam,or other industrial polymers that c
16、onform to the contours of adjacent parts thus providing an airtight or liquid tight seal between the parts.19Copyright DASSAULT SYSTEMES 2002Design Process:GasketStep 6:Replacing the SketchSketching Pre-Defined ProfilesEditing ProfilesPerforming a SymmetryFully Constrain the GasketSketching Simple P
17、rofiles12364520Copyright DASSAULT SYSTEMES 2002Master ExerciseGasket(Step 1)-Sketching Simple ProfilesIn this step you will:Set up the Sketching Mode Use Simple Profile tools to sketch half of the Gasket10 min.21Copyright DASSAULT SYSTEMES 2002Do It Yourself(1/2)Sketch the profile shown on the right
18、.The outer profile should be sketched with one use of the Profile tool.The Sketching mode should be set so that only Horizontality,Verticality,and Tangency Constraints are automatically created.Place the circles roughly as shown.Turn off the automatic creation of Constraints and Dimensions when sket
19、ching the circles.Load:CATSKE_Ex_Master_Step1.CATPart22Copyright DASSAULT SYSTEMES 2002Do It Yourself(2/2)Hints:Go to Tools/Options/Part/Sketcher (in the Menubar)to set Grid Auto detection parametersSwitch Sketching mode in the Tools toolbar23Copyright DASSAULT SYSTEMES 2002Master ExerciseGasket(Ste
20、p 2)-Sketching Pre-Defined ProfilesIn this step you will:Add a slot on the Gasket5 min.24Copyright DASSAULT SYSTEMES 2002Do It YourselfSketch the slot in the location shown on the right using a Pre-Defined Profile tool.Set the sketching mode to automatically create Horizontality,Verticality,and Tang
21、ency constraintsSave your model for the next stepLoad:CATSKE_Ex_Master_Step2.CATPart25Copyright DASSAULT SYSTEMES 2002Master ExerciseGasket(Step 3)-Editing ProfilesIn this step you will:Edit the slot on the Gasket5 min.26Copyright DASSAULT SYSTEMES 2002Do It YourselfChange the center of the top arc
22、on the slot to H=0 and V=20Change the center of the bottom arc on the slot to H=0 and V=-20Save your model for the next stepLoad:CATSKE_Ex_Master_Step3.CATPart27Copyright DASSAULT SYSTEMES 2002Master ExerciseGasket(Step 4)-Performing a SymmetryIn this step you will:Create the symmetrical elements of
23、 the Gasket10 min.28Copyright DASSAULT SYSTEMES 2002Do It YourselfPerform a symmetry operation on the outer profile and the two circles(Refer to previous page)in one step.Use AutoSearch to select the outer profile then use the CTRL key to select the two circlesAutomatically create Symmetry Constrain
24、ts(Hint:Turn on Dimensional Constraints Mode)Use the Search tool under Edit in the Menubar to select all the Symmetry Constraints and No-Show them.Save your model for the next stepLoad:CATSKE_Ex_Master_Step4.CATPart29Copyright DASSAULT SYSTEMES 2002Master ExerciseGasket(Step 5)-Fully Constraining th
25、e GasketIn this step you will:Completely constrain the Gasket by using a combination of Geometric and Dimensional Constraints You will then create the actual solid Gasket using the Pad tool from the Part Design Workbench.Successfully creating a Pad will also help verify that your Sketch was correctl
26、y defined.20 min.30Copyright DASSAULT SYSTEMES 2002Do It Yourself(1/4)Create the Geometric and Dimensional Constraints shown on the next page.Create a Relation between the two 10 mm radius dimensions.Access the Pad tool in the Part Design Workbench and create a thickness of 5mm.for the Gasket.(Pleas
27、e check with the Instructor on where the Pad tool is located if you have trouble finding it)Save your model for the next stepLoad:CATSKE_Ex_Master_Step5.CATPart31Copyright DASSAULT SYSTEMES 2002Do It Yourself(2/4)Turn the page if you want Hints:32Copyright DASSAULT SYSTEMES 2002Do It Yourself(3/4)Hi
28、nts:You dont have to constrain the left side of the Gasket because the geometry there is already constrained by the Symmetry Constraints(in No-Show).Put a Coincidence Constraint between the points that lie on top of one another where the right and left profiles meet.This is a Coincidence Constraint
29、between the center of this corner and the lower horizontal line.These type of dimensions are all off the HV Axes(not the Symmetry Construction line of the Elongated Hole)33Copyright DASSAULT SYSTEMES 2002Do It Yourself(4/4)Result34Copyright DASSAULT SYSTEMES 2002Master ExerciseGasket(Step 6)-Replaci
30、ng the SketchIn this step you will:Modify the Gasket by replacing its Sketch with a new REV B Sketch5 min.35Copyright DASSAULT SYSTEMES 2002Do It Yourself(1/2)Replace your original Sketch for the Gasket with the other sketch.Refer to next page for required result.Save your model for your own reference.Load:CATSKE_Ex_Master_Step6.CATPart36Copyright DASSAULT SYSTEMES 2002Do It Yourself(2/2)END of GASKET exercise!37Copyright DASSAULT SYSTEMES 2002