Introduction to CATIA V5Release 16(A Hands-On Tutorial Approach)Kirstie PlantenbergUniversity of Detroit MercySDCPUBLICATIONSSchroff Development

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An Introduction to CATIA V5Chapter 2: SKETCHERCopyrightedChapter 2: SKETCHERMaterialIntroductionChapter 2 focuses on CATIA’s Sketcher workbench. The reader will learn how tosketch and constrain very simple to very complex 2D profiles.CopyrightedMaterialTutorials Contained in Chapter 2 Tutorial 2.1: Sketch Work ModesTutorial 2.2: Simple Profiles & ConstraintsTutorial 2.3: Advanced Profiles & Sketch AnalysisTutorial 2.4: Modifying Geometries & RelimitationsTutorial 2.5: Axes & TransformationsTutorial 2.6: Operations on 3D Geometries & Sketch planesTutorial 2.7: Points & SplinesCopyrightedMaterialCopyrightedMaterial2-1

An Introduction to CATIA V5Chapter 2: alCopyrightedMaterialCopyrightedMaterial2-2

Chapter 2: SKETCHER: Tutorial 2.1CopyrightedChapter 2:SKETCHERMaterialTutorial 2.1: Sketch WorkModesCopyrightedMaterialFeatured Topics & CommandsThe Sketcher workbenchThe Sketch tools toolbarPart ModeledSection 1: Using Snap to PointSection 2: Using Construction ElementsSection 3: Geometrical and Dimensional ConstraintsSection 4: Cutting the part by the sketch plane.CopyrightedMaterialPrerequisite Knowledge & Commands Entering workbenchesEntering and exiting the Sketcher workbenchDrawing simple profilesSimple Pads and PocketsCopyrightedMaterial2.1 - 12.1-22.1-32.1-42.1-42.1-72.1-92.1-11

Chapter 2: SKETCHER: Tutorial 2.1CopyrightedMaterialThe Sketcher WorkbenchThe Sketcher workbench is a set of tools that helps you create and constrain 2Dgeometries. Features (pads, pockets, shafts, etc.) may then be created solids ormodifications to solids using these 2D profiles. You can access the Sketcherworkbench in various ways. Two simple ways are by using the top pull downmenu (Start – Mechanical Design – Sketcher), or by selecting the Sketchericon. When you enter the sketcher, CATIA requires that you choose a plane tosketch on. You can choose this plane either before or after you select theSketcher icon. To exit the sketcher, select the Exit Workbenchicon.CopyrightedMaterialThe Sketcher workbench contains the following standard workbench specifictoolbars. Profile toolbar: The commands locatedin this toolbar allow you to create simplegeometries (rectangle, circle, line, etc.)and more complex geometries (profile,spline, etc.). Operation toolbar: Once a profile has been created,it can be modified using commands such as trim,mirror, chamfer, and other commands located in theOperation toolbar.CopyrightedMaterial Constraint toolbar: Profiles may be constrained l (tangent, parallel, etc.) constraintsusing the commands located in the Constrainttoolbar. Sketch tools toolbar: The commands in thistoolbar allow you to work in different modes whichmake sketching easier. User Selection Filter toolbar: Allows you toactivate different selection filters.CopyrightedMaterial2.1 - 2

Chapter 2: SKETCHER: Tutorial 2.1 Visualization toolbar: Allows you to, amongother things to cut the part by the sketchplane and choose lighting effects and otherfactors that influence how the part isvisualized. Tools toolbar: Allows you to, among others otherthings, to analyze a sketch for problems, and createa datum.CopyrightedMaterialThe Sketch tools ToolbarThe Sketch tools toolbar contains icons that activate and deactivate differentwork modes. These work modes assist you in drawing 2D profiles. Reading fromleft to right, the toolbar contains the following work modes; (Each work mode isactive if the icon is orange and inactive if it is blue.) CopyrightedMaterialGrid: This command turns the sketcher grid onand off.Snap to Point: If active, your cursor will snap to theintersections of the grid lines.Construction / Standard Elements: You can draw two different types ofelements in CATIA a standard element and a construction element. Astandard element (solid line type) will be created when the icon is inactive(blue). It will be used to create a feature in the Part Design workbench. Aconstruction element (dashed line type) will be created when the icon is active(orange). They are used to help construct your sketch, but will not be used tocreate features.Geometric Constraints: When active, geometric constraints will automaticallybe applied such as tangencies, coincidences, parallelisms, etc.Dimensional Constraints: When active, dimensional constraints willautomatically be applied when corners (fillets) or chamfers are created, orwhen quantities are entered in the value field. The value field is a place wheredimensions such as line length and angle are manually entered.CopyrightedMaterialCopyrightedMaterial2.1 - 3

Chapter 2: SKETCHER: Tutorial 2.1CopyrightedMaterialPart ModeledThe part modeled inthis tutorial is shownbelow. The part isconstructed with theassistance ofdifferent workmodes.CopyrightedMaterialSection 1: Using Snap to Point1) Open a New Part drawing and name the part Spline Shape.CopyrightedMaterial2) Enter the Sketcheron the yz plane.3) Restore the default positions of the toolbars (Tools – Customize. –Toolbars tab – Restore position.) Move the Sketch Tools toolbar and theUser Selection Filter toolbar to the top toolbar area.CopyrightedMaterial2.1 - 4

Chapter 2: SKETCHER: Tutorial 2.1CopyrightedMaterial4) Set your grid spacing. At the top pull down menu, select Tools – Options. Inthe Options window, expand the Mechanical Design portions of the left sidenavigation tree and select Sketcher. Activate the options Display, Snap topoint, and Allow Distortions in the Grid section on the right side. Set yourPrimary spacing and Graduations to H: 100 mm and 20, and V: 100 mm and10.CopyrightedMaterialCopyrightedMaterial5) Select the Splineside toolbar area.icon. This is located in the Profile toolbar in the right6) Move your cursor around the screen. Note that it snaps to the intersections ofthe grid. Your Snap to Pointshould be orange (active). Deactivate theSnap to Pointicon by clicking on it and turning it back to blue. Moveyour cursor around the screen and notice the difference.CopyrightedMaterial2.1 - 5

Chapter 2: SKETCHER: Tutorial 2.1CopyrightedMaterial7) ReactivatetheSnaptoPointicon and drawthe spline shown. Selecteach point (indicated by anumber in a square) in orderfrom 1 to 7, double clickingat the last point to end thespline command.8) Edit the spline by doubleclicking on any portion of it.217346CopyrightedMaterial9) In the Spline Definitionwindow, select CtrlPoint.7,then activate the Tangencyoption, and select OK.Notice that the last point isnow tangent to the firstpoint.5CopyrightedMaterial10) Draw a Circleas shown.inside the splineCopyrightedMaterial2.1 - 6

Chapter 2: SKETCHER: Tutorial 2.1CopyrightedMaterial11) Exit the Sketcherto a length of 50 mm.and Padthe sketchCopyrightedMaterialSection 2: Using construction elements.1) Deselect all.2) Enter the Sketcherface of the part.on the frontSketch faceCopyrightedMaterial3) Activate the Construction / StandardElementsorange.icon. It should be4) Deselect all. Hit the Esc key twice.5) Project an outline of the part onto the sketch plane. Select the Project 3DElementsicon then select the face of the part. This icon is located inthe Operations toolbar near the bottom of the right side toolbar area. It maybe hidden in the bottom right corner.CopyrightedMaterial6) Deselect all. The projection should now be yellow (this means it is associatedwith the part and will change with the part) and dashed (this means it is aconstruction element).2.1 - 7

Chapter 2: SKETCHER: Tutorial 2.1CopyrightedMaterial7) At the top pull down window, select Tools – Options – Sketcher tab.Deactivate the Grid Display and Snap to Point options. Select OK.CopyrightedMaterial8) Deactivate the Construction / Standard Elementsicon.command to draw the triangle shown. The points of the9) Using the Profiletriangle should lie on the projected construction element. You will know whenyou are on the projection when a symbol of two concentric circles appears,and you will know when you are snapped to the endpoint of the start pointwhen a symbol of two concentric circles appears and the inner one is filled.CopyrightedMaterialCopyrightedMaterial2.1 - 8

Chapter 2: SKETCHER: Tutorial 2.1CopyrightedMaterial10) Exit the Sketcherto a length of 10 mm.and Padthe sketchCopyrightedMaterialSection 3: Geometrical and Dimensional Constraints1) Deselect all.2) Enter the Sketcheron thefront large face of the part.CopyrightedMaterial3) Activate the GeometricalConstraintsorange.icon. It should beSketch face4) At the top pull down window, select Tools – Options – Sketcher. Under theConstraint portions of the window, select SmartPick. The SmartPick windowshows all the geometrical constraints that will becreated automatically. These constraints may beturn on and off depending on your design/sketchneeds. Close both the Smart Pick and Optionswindows.CopyrightedMaterial2.1 - 9

Chapter 2: SKETCHER: Tutorial 2.1CopyrightedMaterial5) Draw a Rectangleto theright of the hole as shown.Noticethatgeometricconstraints (H horizontal, V Vertical) are automaticallyapplied.6) Deactivate the GeometricalConstraintsshould be blue.icon.ItCopyrightedMaterial7) Draw a Rectangleto theleft of the hole as shown.Notice that no geometric constraintsare made.Click and dragthe corner point.8) For each rectangle, click on one of the points defining a corner and move itusing the mouse. Notice the difference between the two. This is due to thehorizontal and vertical constraints that were applied to the one rectangle.9) Undo (CTRL Z) the moves until the original rectangles are back.CopyrightedMaterial10) Exit the Sketcherand Pocketsketch using the Up to last option.theCopyrightedMaterial11) Expand the specification tree to the sketch level.2.1 - 10

Chapter 2: SKETCHER: Tutorial 2.1CopyrightedMaterial12) Edit Sketch.3 (the sketch associated with the pocket). In the specificationtree, double click on Sketch.3, or right click on it and select Sketch.3 object Edit. You will automatically enter the sketcher on the sketch plane used tocreate this sketch.13) Activate the Dimensional Constrainticon. It should be orange.icon, select14) Select the Cornerthe bottom left corner point of the leftrectangle, move your mouse up andto the right, and click. A corner orfillet will be created. The corner iconis located in the Operations toolbarnear the bottom of the right sidetoolbar area. The corner/filletmay also be created by Corner pointselecting the two lines thatcreate the corner. Notice that adimension is automatically created.CopyrightedMaterial15) Deactivate the DimensionalConstrainticon. It should beCopyrightedMaterialblue. Create a Cornerin theupper right corner of the samerectangle. Notice that this time nodimensional constraint was created.16) Exit the Sketcher. We havechanged the sketch used to createthe pocket. Notice that the pocket is automatically updated to reflect thesechanges.CopyrightedMaterialSection 4: Cutting the part by the sketch plane.Sometimes it is necessary to sketch inside the part. The Cut Part by SketchPlane command allows you to see inside the part and makes it easier to drawand constrain your sketch.1) Enter the Sketcheron the xy plane.2.1 - 11

Chapter 2: SKETCHER: Tutorial 2.1CopyrightedMaterial2) Select the Isometric Viewarea.icon. This icon is located in the bottom toolbar3) Select the Cut Part by SketchPlaneicon located in thebottom toolbar area. The part innow cut by the xy plane (thesketch plane).CopyrightedMaterial4) Select the Top viewiconand draw a Circlein themiddle of the hole as shownin the figure.5) Exit the Sketcher.6) Select the Padicon andthen select the More button.Fill in the following fields for boththe First and Second Limits;Type: Up to surface, Limit:Select the inner circumference ofthehole,andSelection:Sketch.4 (the circle). SelectPreview to see if the Pad will beapplied correctly, and then OK.CopyrightedMaterialCopyrightedMaterial2.1 - 12

Chapter 2: SKETCHER: Tutorial 2.2CopyrightedChapter 2:SKETCHERMaterialTutorial 2.2: Simple Profiles &ConstraintsCopyrightedMaterialFeatured Topics & CommandsProfile toolbarConstraints toolbarSelecting iconsPart ModeledSection 1: Creating circles.Section 2: Creating dimensional constraints.Section 3: Creating lines.Section 4: Creating geometrical constraints.Section 5: Creating arcs.CopyrightedMaterialPrerequisite Knowledge & Commands Entering workbenchesEntering and exiting the Sketcher workbenchSimple PadsWork modes (Sketch tools toolbar)CopyrightedMaterial2.2 - 12.2-22.2-52.2-52.2-62.2-62.2-72.2-82.2-112.2-14

Chapter 2: SKETCHER: Tutorial 2.2CopyrightedMaterialProfile toolbarThe Profile toolbar contains 2D geometry commands. These geometries rangefrom the very simple (point, rectangle, etc.) to the very complex (splines, conics,etc.). The Profile toolbar contains many sub-toolbars. Most of these subtoolbars contain different options for creating the same geometry. For example,you can create a simple line, a line defined by two tangent points, or a line that isperpendicular to a surface. Reading from left to right, the Profile toolbar containthe following file toolbar Profile: This command allows you to create a continuous set of lines and arcsconnected together.Rectangle / Predefined Profile toolbar: The default top command is rectangle.Stacked underneath are several different commands used to createpredefined geometries.Circle / Circle toolbar: The default top command is circle. Stacked underneathare several different options for creating circles and arcs.Spline / Spline toolbar: The default top command is spline which is a curvedline created by connecting a series of points.Ellipse / Conic toolbar: The default top command is ellipse. Stackedunderneath are commands to create different conic shapes such as ahyperbola.Line / Line toolbar: The default top command is line. Stacked underneath areseveral different options for creating lines.Axis: An axis is used in conjunction with commands like mirror and shaft(revolve). It defines symmetry. It is a construction element so it does notbecome a physical part of your feature.CopyrightedMaterial2.2 - 2

Chapter 2: SKETCHER: Tutorial 2.2 CopyrightedMaterialPoint / Point toolbar: The default top command is point. Stacked underneathare several different options for creating points.Predefined Profile toolbarPredefined profiles are frequently used geometries. CATIA makes these profilesavailable for easy creation which speeds up drawing time. Reading from left toright, the Predefined Profile toolbar contains the following commands. Rectangle: The rectangle is definedby two corner points. The sides of therectangle are always horizontal andvertical.Oriented Rectangle: The oriented rectangle is defined by three corner points.This allows you to create a rectangle whose sides are at an angle to thehorizontal.Parallelogram: The parallelogram is defined by three corner points.Elongated Hole: The elongated hole or slot is defined by two points and aradius.Cylindrical Elongated Hole: The cylindrical elongated hole is defined by acylindrical radius, two point and a hole radius.Keyhole Profile: The keyhole profile is defined by two center points and tworadii.Hexagon: The hexagon is defined by a center point and the radius of aninscribed circle.Centered Rectangle: The centered rectangle is defined by a center point anda corner point.Centered Parallelogram: The centered parallelogram is defined by a centerpoint (defined by two intersecting lines) and a corner point.CopyrightedMaterialCopyrightedMaterialCircle toolbarThe Circle toolbar contains several different ways of creating circles and arcs.Reading from left to right, the Circle toolbar contains the following commands. Circle: A circle is defined by a center pointand a radius.Three Point Circle: The three point circlecommand allows you to create a circle usingthree circumferential points.Circle Using Coordinates: The circle using coordinates command allows youto create a circle by entering the coordinates for the center point and radius ina Circle Definition window.Tri-Tangent Circle: The tri-tangent circle command allows you to create acircle whose circumference is tangent to three chosen lines.CopyrightedMaterial2.2 - 3

Chapter 2: SKETCHER: Tutorial 2.2 CopyrightedMaterialThree Point Arc: The three point arc command allows you to create an arcdefined by three circumferential points.Three Point Arc Starting With Limits: The three point arc starting with limitsallows you to create an arc using a start, end, and midpoint.Arc: The arc command allows you to create an arc defined by a center point,and a circumferential start and end point.Spline toolbarReading from left to right, the Spline toolbar contains the following commands. Spline: A spline is a curved profile defined by three or morepoints. The tangency and curvature radius at each point may bespecified.Connect: The connect command connects two points or profileswith a spline.CopyrightedMaterialConic toolbarReading from left to right, the Conic toolbar contains the following commands. Ellipse: The ellipse is defined by center point and amajor and minor axis points.Parabola by Focus: The parabola is defined by a focus,apex and a start and end point.Hyperbola by Focus: The hyperbola is defined by a focus, center point, apexand a start and end point.Conic: There are several different methods that can be used to create coniccurves. These methods give you a lot of flexibility when creating above threetypes of curves.Line toolbarCopyrightedMaterialThe Line toolbar contains several different ways of creating lines. Reading fromleft to right, the Line toolbar contains the following commands. Line: A line is defined by two points.Infinite Line: Creates infinite lines that are horizontal,vertical or defined by two points.Bi-Tangent Line: Creates a line whose endpoints aretangent to two other elements.Bisecting Line: Creates an infinite line that bisects the angle created by twoother lines.Line Normal to Curve: This command allows you to create a line that startsanywhere and ends normal or perpendicular to another element.CopyrightedMaterial2.2 - 4

Chapter 2: SKETCHER: Tutorial 2.2CopyrightedMaterialPoint toolbarThe Point toolbar contains several different ways of creating points. Readingfrom left to right, the Point toolbar contains the following commands. Point by Clicking: Creates a point by clicking the leftmouse button.Point by using Coordinates: Creates a point at aspecified coordinate point.Equidistant Points: Creates equidistant points along a predefined path curve.Intersection Point: Creates a point at the intersection of two differentelements.Projection Point: Projects a point of one element onto another.CopyrightedMaterialConstraint toolbarConstraints can either be dimensional or geometrical. Dimensional constraintsare used to constrain the length of an element, theradius or diameter of an arc or circle, and thedistance or angle between elements. Geometricalconstraints are used to constrain the orientation ofone element relative to another. For example, twoelements may be constrained to be perpendicular toeach other. Other common geometrical constraintsinclude parallel, tangent, coincident, concentric,etc. Reading from left to right: CopyrightedMaterialConstraints Defined in Dialoged Box: Creates geometrical and dimensionalconstraints between two elements.Constraint: Creates dimensional constraints.Contact Constraint: Creates a contact constraint between two elements.Fix Together: The fix together command groups individual entities together.Auto Constraint: Automatically creates dimensional constraints.Animate Constraint: Animates a dimensional constraint between to limits.Edit Multi-Constraint: This command allows you to edit all your sketchconstraints in a single window.CopyrightedMaterialSelecting iconsWhen an icon is selected, it turns orange indicating that it is active. If the icon isactivated with a single mouse click, the icon will turn back to blue (deactivated)when the operation is complete. If the icon is activated with a double mouse click,it will remain active until another command is chosen or if the Esc key is hit twice.2.2 - 5

Chapter 2: SKETCHER: Tutorial 2.2CopyrightedMaterialPart ModeledThe part modeled in this tutorial is shownon the right. This part will be created usingsimple profiles, circles, arcs, lines, andhexagons.Thegeometriesareconstrained to conform to certaindimensional (lengths) and geometricalconstraints (tangent, perpendicular, etc.).Section 1: Creating circles.(Hint: If you get confused about how toapply the different commands that areused in this tutorial, read the prompt linefor additional help.)CopyrightedMaterial1) Launch CATIA V5, enter the PartDesign workbench and, if asked,name your part Post.2) Enter the Sketcherplane.on the zx3) Set your grid spacing to be 100 mmwith 10 graduations, activate the Snapto point, and activate the geometrical and dimensional constraints. (Tools –Options.)CopyrightedMaterialDuplicate thesettings shown.CopyrightedMaterial2.2 - 6

Chapter 2: SKETCHER: Tutorial 2.2CopyrightedMaterial4) Pull out the Circle toolbar5) Double click on the Circledraw the circles shown.icon and6) Exit the Sketcherand Padthe sketch to12 mm on eachside (Mirroredextent). Noticethat the innercircle at thebottom becomesa hole.CopyrightedMaterialSection 2: Creating dimensional constraints.CopyrightedMaterial1) Expand your specification tree to the sketchlevel.2) Edit Sketch.1. To edit a sketch you can doubleclick on the sketch name in the specification tree,or you can right click on the name selectSketch.1 - Edit. CATIA automatically takes youinto the sketcher on the plane used to createSketch.1.3) Double click on the Constraintsicon.CopyrightedMaterial4) Select the border of the upper circle, pull thedimension out and click your left mouse button toplace the dimension. Repeat for the two bottomcircles.5) Select the center point of the upper circle, thenthe center point of the lower circles, pull the dimension out and click.2.2 - 7

Chapter 2: SKETCHER: Tutorial 2.2CopyrightedMaterial6) Double click on the D20 dimension. In theConstraint Definition window, change thediameter from 20 to 16 mm.D481407) In a similar fashion, change the otherdimensions to the values shown in the figure.CopyrightedMaterialD16D328) Exit the Sketcherand deselect all.Notice that the part automatically updates tothe new sketch dimensions.Section 3: Creating lines.1) Enter the Sketcheron the zx plane.13CopyrightedMaterial2) Deactivate the Snap to Pointicon.3) Project the two outer circles of the part onto thesketch plane. Double click on the Project 3DElementsicon. This icon is located in thelower half of the right side toolbar area. Selectthe outer edges of the two cylinders.4) Pull out the line toolbar.CopyrightedMaterial5) Double click on the Bi-Tangent Lineicon.Select the points, in order, as indicated on thefigure.2.2 - 824

Chapter 2: SKETCHER: Tutorial 2.2CopyrightedMaterial6) Pull out the Relimitations toolbarOperation toolbar.located in theProjected edgeTrimmed edge7) Double click on the Quick trimicon. Select the outer portion of theprojected circles. Notice that thetrimmed projection turns into aconstruction element (dashed).13CopyrightedMaterial8) Exit the Sketcherand Padthe sketch to 6 mmoneachside(Mirrored extent).Projected edgeCopyrightedMaterial2Trimmed edgeCopyrightedMaterial2.2 - 94

Chapter 2: SKETCHER: Tutorial 2.2CopyrightedMaterial9) Enter the Sketcheron the zx plane.icon (it should be10) Activate the Construction/Standard Elementorange).11) Select the Project 3D Elementsicon and thenproject the left line of the part as shown in thefigure.CopyrightedMaterial12) Activate your Snap to Pointicon.13) Draw a line that starts at point 1(seefig.)andendsnormal/perpendicular to projectedline using the Line Normal toCurveProjected lineicon.Normal line114) Deactivate your Snap to Pointicon.CopyrightedMaterialBisecting line15) Draw a Linepoint 2.from point 1 to16) Draw a line that bisects theprevious 2 lines using theBisecting Lineicon. Readthe prompt line for directions.217) Deselect all.CopyrightedMaterial18) Deactivate the Construction/Standard Elementnow).2.2 - 10icon (it should be blue

Chapter 2: SKETCHER: Tutorial 2.2CopyrightedMaterial19) Draw a circle that is tangent to the projectedline, normal line and bisecting line using theTri-Tangent Circleprompt line for directions.icon. Read theCopyrightedMaterial20) Zoom in on the circle.21) Using Profile, draw the three additionallines shown in the figure.CopyrightedMaterial22) Use the Quick Trimcommand to trim off theinside portion of the circle as shown. You willhave to apply the quick trim operation twice.23) Draw a Hexagonthat has the same center asthe circle/arc and is the approximate size shown inthe figure. The Hexagon icon is usually stackedunder the Rectangleicon. (Your hexagon willcontain many constraints that are not shown in thefigure.)CopyrightedMaterial24) Deselect all.2.2 - 11

Chapter 2: SKETCHER: Tutorial 2.2CopyrightedMaterial25) Apply a dimensional Constrainttothe distance between the flats of thehexagon as shown. To create thisconstraint, select the top line and thenthe bottom line. Double click on thedimension and change its value to 7 mm.26) Exit the SketcherandCopyrightedMaterialPadthe sketch to a lengthof 2 mm on each side(Mirrored extent).CopyrightedMaterialSection 4: Creatingconstraints.geometrical1) Enter the Sketcheron the flatface of the large cylinder.Sketch faceCopyrightedMaterial2.2 - 127

Chapter 2: SKETCHER: Tutorial 2.2CopyrightedMaterial2) Deactivate the Geometrical Constrainticon (it should be blue). This willallow you to create profiles with no automatically applied constraints.3) On the face ofthe largecylinder, drawthe Profileshown. Nogeometricalconstraintsshould beindicated.Horizontal constraintVertical constraintParallel constraintCopyrightedMaterial4) Deselect all.Perpendicularconstraint5) ReactivatetheGeometricalConstraintsicon (it should be orange).6) Apply a vertical constraint to the right line of the profile by right clicking on itand selecting Line.? object – Vertical.7) Apply a horizontal constraint to the top line using a similar procedure.CopyrightedMaterial8) Deselect all.9) Apply a perpendicular constraint between the rightand bottom line of the profile. Hold the CTRL keydown and select the left and bottom lines. Select theConstraints Defined in Dialog Boxicon. Inthe Constraint Definition window, check the boxnext to Perpendicular and then select OK.10) Apply a parallel constraint between the left and rightlines of the profile in a similar way.CopyrightedMaterial2.2 - 13

Chapter 2: SKETCHER: Tutorial 2.2CopyrightedMaterial11) Apply Constraintsto therectangle and change their values tothe values shown in the figure.2014CopyrightedMaterial12) Apply the additional dimensionalconstraints shown in order toposition the rectangle. Select theConstraintsicon, then thecircumference of the circle and thenthe appropriate side of therectangle. Notice that once all theconstraintsareapplied,therectangle turns green indicatingthat it is fully constrained. If it didnot turn green make sure theVisualization of diagnosisisactivated in the Options window.(Tools – Options )14CopyrightedMaterial1713) Draw the triangle shown using theProfilecommand. Whendrawing the triangle make sure thatthe top point is aligned with theorigin () and the bottom line ishorizontal (H).CopyrightedMaterial2.2 - 14

Chapter 2: SKETCHER: Tutorial 2.2CopyrightedMaterial14) Constrain the vertical height of thetriangle to be 6 mm. Select theConstraintsicon, select theone of the angled lines of thetriangle, right click and selectVertical Measure Direction.446815) Constrainthe rest of thetriangle as shown.CopyrightedMaterial16) Exit the Sketchera length of 5 mm.and Padthe sketch toCopyrightedMaterialSection 5: Creating arcs.1) Enter the Sketchermiddle section.on the front face of theCopyrightedMaterial2.2 - 15Sketch face

Chapter 2: SKETCHER: Tutorial 2.2CopyrightedMaterial2) Activate the Construction/Standard Elementicon.3) Select the Project 3D Elementsicon and thenproject the front face of the middle section.4) Deselect all.5) Deactivate the Construction/Standard Elementicon.CopyrightedMaterial6) Activate your Snap to Pointicon.7) Draw the profile shown. Use the Three Point Arccommand to create thebottom arc, the Arccommand to create the top arc. The Arc icons arestacked under the Circle icon. For assistance in creating the arcs, read theprompt line at the bottom of the graphics screen. UseCopyrightedMaterialthe Profilelines.command to create the connectingArcCenter pointfor arcCopyrightedMaterialThree point arc2.2 - 16

Chapter 2: SKETCHER: Tutorial 2.2CopyrightedMaterial8) Exit the Sketchera length of 30 mm.and Padthe sketch toCopyrightedMaterial9) Deselect all.10) Mirror the entire solid. Select the Mirroriconin the Transformation Features toolbar. S

An Introduction to CATIA V5 Chapter 2: SKETCHER 2 - 1 Chapter 2: SKETCHER Introduction Chapter 2 focuses on CATIA’s Sketcher workbench. The reader will learn how to sketch and constrain very simple to very complex 2D profiles. Tutorials Contained in Chapter 2 Tutorial 2.1: Sketch Work ModesFile Size: 1MBPage Count: 33