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CATIA Part Design & Sketcher

Basic Sketcher

CATIA V5R6

This section will cover the basic use of the Sketcher to create profiles for the Part Designpackage. This section will consist of four parts: basic shapes, profiles, constraints andmodifications to profiles.

It is assumed that you have the default icons selected in the bottom toolbar. This includesthe snap-to-grid icon, the geometrical constraint icon and the dimensional constraint icon.These and the other options in the bottom toolbar will be discussed in more detail later inthe manual.

The pictures in this manual are shown without a grid; this is to make them easier to see.When you are sketching, though, you will have a grid by default. If you want to turn thegrid off, you can use the pull-down menus.

Basic Shapes

This part will discuss the various shapes that can be created in the Sketcher using the icons

on the Sketcherworkbench. The purpose of this group of exercises is to introduce how touse those icons and generate the basic shapes. The usefulness of these shapes depend on theprofile you are trying to create. Therefore you should just concentrate on what each iconallows you do and the corresponding shape it creates. Later in the class you will learn howto put everything together to generate your parts.

The following exercises assume that you are in a new sketch. The first page shows you thenecessary steps to begin a new model and start a new sketch on a particular plane. Afterthat if you need help you will have to refer back to that page.

Note: It may not be necessary to do all of the following exercises step by step. If you feel

comfortable with the material then you can create all of the basic shapes on one sketch. Ifyou struggle or would like more information then you can consult the individual exercise forthat shape.

www.cadfamily.comThe document is for study only,if any tort to your rights,Please inform us,we will delete it

Contact:[email protected] Basic Shapes, Page 29 Wichita State University


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Creating a new part with a new sketch

CATIA V5R6

Select the new icon in the bottom toolbar.This creates a new document. There aremany types of documents possible, so next you will choose which type you want.

Select Part.

Select OK. This will create a new part.

Select the Sketcher icon.This will activate the Sketcher, but first CATIA needs toknow which plane you wish to use for your sketch.

Select the yz plane. You can either select the yz plane symbol in the center of your screenor you can select the yz plane name in the specification tree. By selecting this plane you aretelling the computer that you want to sketch a profile in that plane. CATIA will rotate thewindow around so that you are looking straight down on (that is, normal to) the plane toperform your sketch.

Note: Remember to refer back to this page if you have trouble creating a new part with anew sketch.

Saving and closing the part

Select the pull-down menu File. This will give you the option to use Save As.

Select the Save As option from the pull-down menu. This will open up the Save Aswindow. You will need to specify your directory in the Save inbox and key in the file namein the File namebox.

Select Save. This will save the document as a CATPart with the name you specified in thedirectory you specified.

You will now want to close the window because you are finished with this exercise:

Select the pull-down menu File. This will give you the option to Close.

Select Close option from the pull-down menu. This closes the window and you are nowready to proceed to the next exercise.


Contact:[email protected] Shapes, Page 30Wichita State University


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Rectangle

CATIA V5R6

This will cover the steps necessary to build a rectangle using the rectangle icon. This isuseful any time you need a box shape. All you have to do is specify two opposite corners ofthe rectangle and Sketcher will generate it for you.

Select the rectangle icon.Notice this icon has a down arrow on it. If you select theicon at the location of the arrow the various sub-option icons will appear. For now you justwant the regular rectangle. Once you select the icon it should highlight.

Select the origin point of the sketch plane. This will specify one of the corners of yourrectangle.

Select somewhere up and out to the right. This defines the other corner of the rectangleand the rectangle should appear similar to the one below.

Notice how the horizontal and vertical constraints automatically appeared on the rectangle.If you wish, you can save your document: call it rectangle with your initials.




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Oriented Rectangle

CATIA V5R6

This will cover the steps necessary to build an oriented rectangle using the orientedrectangle icon. This is useful any time you need a box type shape that is oriented at an angleinstead of being horizontal and vertical. You have to specify a location for the rectangle tobegin at and then specify the other end of the line representing a side of the rectangle. Afterdoing that then you have to specify a location for the height of the rectangle and then the

rectangle will be generated for you.

Press and hold the left mouse button while on the down arrow of the rectangle icon.This allows you to access the sub-option icons. You will want the oriented rectangle icon.

Release the button on top of the oriented rectangle icon.The icon should changeto the oriented rectangle icon and highlight. Notice how the rectangle icon no longerappears; it has moved to the sub-options now. Remember you can always access the sub-options by holding down the left mouse button on the down arrow of the respective icon.

Select the origin point of the sketch plane. This will specify one of the corners of yourrectangle. The next location that you select will define the orientation of the rectangle.

Select somewhere up and to the right. This defines the other end of a side of the orientedrectangle. The next location that you define will determine the height of the orientedrectangle.

Select somewhere up and to the left of the last location. This defines the height of theoriented rectangle and it should appear similar to the one shown below.

Notice how the parallel constraints automatically appeared on the oriented rectangle. If youwish, you can save your document; call it oriented rectangle with your initials.




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Parallelogram

CATIA V5R6

This will cover the steps necessary to build a parallelogram using the parallelogram icon.This is useful any time you need a shape where the sides are parallel to one another but theycan be at any angle. This is similar to the oriented rectangle except the angle between sidesdoes not have to be 90 degrees. You have to specify a corner point for the parallelogram,then a point for the other end of a line representing a side of the parallelogram. Finally, you

have to specify the endpoint for one other side of the parallelogram. CATIA will generate aparallelogram using the given points.

Press and hold the left mouse button while on the down arrow of the rectangle icon.(Note: The rectangle icon may not currently be showing; if not, select the down arrow on theicon that is showing in the rectangle spot. If you just completed the last exercise then theicon will be the oriented rectangle icon.) This allows you to access the sub-option icons.You will want the parallelogram icon.

Release the button on top of the parallelogram icon.The icon should change to the

parallelogram icon and highlight. Notice how the previous icon no longer appears; it hasmoved to the sub-options now. Remember you can always access the sub-options by holddown the left mouse button on the down arrow of the respective icon.

Select the origin point of the sketch plane. This will specify one of the corners of yourparallelogram. The next location that you select will define the endpoint of one of the sidesof the parallelogram.

Select somewhere up and to the right. This defines the other end of a side of theparallelogram. The next location that you define will determine the endpoint of the otherside.

Select somewhere up and to the right of the last location. This defines the endpoint ofthe other side of the parallelogram and it should appear similar to the one shown below.

Notice how the parallel constraints automatically appeared on the parallelogram. If youwant, save your document and call it parallelogram with your initials.




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Elongated Slot

CATIA V5R6

This will cover the steps necessary to build an elongated slot using the elongated slot icon.This is useful any time you need to define a slot that is linear and curved with a full radiuson both ends. You have to specify a location for the center of one of the curved ends andthen define a location for the center of the other curved end. After doing that then you haveto specify a location defining the radius of the ends and then the elongated slot will be

generated for you.

Press and hold the left mouse button while on the down arrow of the rectangle icon.(Note: The rectangle icon may not currently be showing, just select the down arrow on theicon that is showing in the rectangle spot. If you just completed the last exercise then theicon will be the parallelogram icon.) This allows you to access the sub-option icons. Youwill want the elongated slot icon.

Release the button on top of the elongated slot icon.The icon should change to theelongated slot icon and highlight. Notice how the previous icon no longer appears; it hasmoved to the sub-options now. Remember you can always access the sub-options by holddown the left mouse button on the down arrow of the respective icon.

Select the origin point of the sketch plane. This will specify the center of one of thecurved ends of your slot. The next location that you select will define the center of the othercurved end of your slot.

Select somewhere up and to the right. This defines the center of the other curved end ofthe slot. The next location that you define will determine the radius of the ends.

Select somewhere up and to the right of the last location. This defines the radius of theends of the slot and it should appear similar to the one shown below.

Notice how the parallel and tangency constraints automatically appeared on the elongatedslot. If you desire you can save your work; call it elongated slot with your initials.




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Elongated Curved Slot

CATIA V5R6

This will cover the steps necessary to build an elongated curved slot using the elongatedcurved slot icon. This is useful any time you need to define a slot that is circular and curvedwith a full radius on both ends. The first step is to specify a location for the center of thecircular path that the slot is going to follow. Then you specify a location to define the radiusof the circular path which also is the definition of the center of one of the curved ends. The

next step is to specify the center of the other curved end along that radius. The last step is tospecify a location that defines the width of the slot. After all that the elongated curved slotwill be generated for you.

Press and hold the left mouse button while on the down arrow of the rectangle icon ofthe current workbench. (Note: The rectangle icon may not currently be showing; justselect the down arrow on the icon that is showing in the rectangle spot. If you justcompleted the last exercise then the icon will be the elongated slot icon.) This allows you toaccess the sub-option icons. You will want the elongated curved slot icon.

Release the button on top of the elongated curved slot icon.The icon shouldchange to the elongated curved slot icon and highlight. Notice how the previous icon nolonger appears; it has moved to the sub-options now. Remember you can always access thesub-options by hold down the left mouse button on the down arrow of the respective icon.

Select the origin point of the sketch plane. This will specify the center of the circularpath. The next location that you select will define the radius of the circular path and thecenter of one of the curved ends.




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CATIA Part Design & Sketcher CATIA V5R6

Select out to the right. This defines the radius of the circular path that the slot is going tofollow and the center of one of the curved ends of the slot. The next location that youdefine will be the center of the other curved end.

Select somewhere down and out to the left of the last location. This defines the center ofthe other curved end of the slot. The next location will determine the width of the slot.

Select somewhere above the last location. This determines the width of the slot and itshould look similar to the one shown below.

Notice how the concentric and tangency constraints automatically appeared on the elongatedcurved slot. If you desire you can save the document and call it elongated curved slotwith your initials.




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Keyhole

CATIA V5R6

This will cover the steps necessary to build a keyhole shape using the keyhole icon. This isuseful any time you need to define a keyhole. To get the keyhole, you need to define fourlocations, in order: the center of the large radius, the center of the small radius, the radiusvalue of the small radius, and the radius value of the large radius. After all that the keyholewill be generated.

Press and hold the left mouse button while on the down arrow of the rectangle icon.(Note: The rectangle icon may not currently be showing, just select the down arrow on theicon that is showing in the rectangle spot. If you just completed the last exercise then theicon will be the elongated curved slot icon.) This allows you to access the sub-option icons.You will want the keyhole icon.

Release the button on top of the keyhole icon.The icon should change to thekeyhole icon and highlight. Notice how the previous icon no longer appears; it has movedto the sub-options now. Remember you can always access the sub-options by hold down theleft mouse button on the down arrow of the respective icon.

Select the origin point of the sketch plane. This will specify the center of the larger radiusof the keyhole. The next location that you select will define the center of the smaller radiusof the keyhole.

Select down below. This defines the center of the smaller radius of the keyhole. The nextlocation that you specify will determine the smaller radius of the keyhole.

Select to the right of the last location. This defines the radius of the smaller end of thekeyhole. The next location will determine where the larger radius is to begin.

Select somewhere above the last location. This determines the size of the larger radius,and it should look similar to the one shown below.

Notice how the parallel and tangency constraints automatically appeared on the keyhole.Save this document, if you wish, with the name keyhole, with your initials.




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Hexagon

CATIA V5R6

This will cover the steps necessary to build a hexagon using the hexagon icon. This isuseful any time you need to define a hexagon. All you have to specify is the center of thehexagon and the distance to a side. The hexagon will then be generated.

Press and hold the left mouse button while on the down arrow of the rectangle icon.

(Note: The rectangle icon may not currently be showing, just select the down arrow on theicon that is showing in the rectangle spot. If you just completed the last exercise, the iconwill be the keyhole icon.) This allows you to access the sub-option icons. You will wantthe hexagon icon.

Release the button on top of the hexagon icon.The icon should change to thehexagon icon and highlight. Notice how the previous icon no longer appears; it has movedto the sub-options now. Remember you can always access the sub-options by hold down theleft mouse button on the down arrow of the respective icon.

Select the origin point of the sketch plane. This will specify the center of the hexagon.The next location that you select will define the distance to a side of the hexagon.

Select to the right. This defines the distance to a side and the hexagon should appearsimilar to the one shown below.

Notice how the parallel and coincidence constraints automatically appeared on the hexagon.Save your document, if you wish, giving it the name hexagon, with your initials.




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Circle

CATIA V5R6

This will cover the steps necessary to build a circle using the circle icon. This icon issimilar to the rectangle icon in the sense that it has many sub-options available. For themain option, all you need to do is specify two points, representing the center and radius ofthe circle, and the circle will be generated for you.

Select the circle icon.Notice this icon has a down arrow on it similar to the rectangleicon. If you select the icon at the location of the arrow the various sub-option icons willappear. For now you just want the regular circle. Once you select the icon it shouldhighlight.

Select the origin point of the sketch plane. This will specify the center of the circle. Thenext location will define the radius of the circle.

Select any location a short distance away from the center. This determines the radius ofthe circle. CATIA will generate a circle similar to the one shown below.

If you desire you can save your work: give it the name circle with your initials.




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Circle through 3 points

CATIA V5R6

This will cover the steps necessary to build a circle passing through three points. You haveto specify the three locations for the circle to pass through and then the circle will begenerated for you.

It is assumed that you know how to access the sub-options of a particular icon therefore the

steps will just tell you to select the sub-option icon. If you have trouble, please refer back tothe previous exercises.

Select the three-point circle icon.icon. It should be highlighted.

This is located in the sub-options of the circle

Select the origin point of the sketch plane. This will specify one of the locations that thecircle will pass through. The other two locations will finish the definition of the circle.

Select up and to the right. This specifies the second location for the circle to pass through.

Select to the left of the last location. This specifies the last location for the circle to passthrough and the circle appears similar to the one shown below.

If you desire you can save this document, calling it 3ptcircle with your initials.




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Circle with Cartesian coordinates

CATIA V5R6

This will cover the steps necessary to build a circle using coordinates. You have to specifythe coordinates for the center of the circle and its radius and then the circle will be generatedfor you.

Select the circle using coordinates icon.and the icon should be highlighted. A Circle Definition window should appear

Notice that you can enter the coordinates using the Cartesian coordinate system or the polarcoordinate system. You will want to use the Cartesian coordinate system for this exercise.

Enter 2 for H, 2 for V and 1 for Radius. The circle appears similar to the one shownbelow.

Notice that the dimension constraints were automatically generated when you created thecircle. If you desire you can save your document and call it circle coord with your initials.




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Circle tangent to 3 elements

CATIA V5R6

This will cover the steps necessary to build a circle tangent to three elements. You have tospecify the three elements that you want the circle to be tangent to and then the circle will begenerated.

Start a new part and go into the Sketcher with the yz plane.

Select the circle using coordinates icon.You will use this icon to create three circlesin order to see how the tri-tangent circle icon works.

Create 3 circles using the following coordinates. H=0, V=3, Radius=1.5; H=4.5, V=3,Radius=2; H=1.5, V=-1, Radius=1. Three circles should appear as shown below. Next youwill create a circle tangent to all three of these.

Select the tri-tangent circle icon. It should be highlighted.

Select the three circles to be tangent to. This will specify the three elements that you wantthe circle to be tangent to and the circle appears similar to the one shown below. You cancreate a circle tangent to any three elements using this icon.

If you desire you can save your document and call it tritangent with your initials.




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Arc through 3 points

CATIA V5R6

This will cover the steps necessary to build an arc passing through three points. You simplyneed to specify any three points and an arc will be generated which starts at the first point,ends at the third point and passes through the second point.

Select the three point arc icon. It should highlight.

Select the origin point of the sketch plane. This will specify one of the locations that thearc will pass through. The other two locations will finish the definition of the arc.

Select up and to the left. This specifies the second location for the arc to pass through.

Select up and to the right of the last location. This specifies the last location for the arcto pass through and the arc appears similar to the one shown below.

If you desire you can save your document and call it 3ptarc with your initials.




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Arc through 3 points using limits

CATIA V5R6

This will cover the steps necessary to build an arc passing through three points. Thedifference between this method and the last one is the order used to specify the three points.In this icon, the first two points you select are the endpoints, and the third is an additionalpoint the arc will pass through.

Select the three point arc using limits icon. It should highlight.

Select the origin point of the sketch plane. This will specify one of the endpoints of thearc. The other two locations will finish the definition of the arc.

Select up and to the right. This specifies the other endpoint of the arc.

Select to the left of the last location. This specifies the location for the arc to pass throughand the arc appears similar to the one shown below.

If you desire you can save your document and call it 3ptarclimits with your initials.




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Arc

CATIA V5R6

This will cover the steps necessary to build an arc by specifying the center point and thenthe starting point and ending point of the arc. The first location that you define will be thecenter point of the arc. The second location determines the radius of the arc and the startingpoint of the arc. The third location defines the other endpoint of the arc.

Select the arc icon. It should be highlighted.

Select the origin point of the sketch plane. This will specify the center of your arc. Theother two locations will finish the definition of the arc.

Select up and to the left. This specifies the starting point of the arc and the radius of thearc.

Select to the right of the last location. This specifies the other endpoint of the arc and thearc appears similar to the one shown below.

If you desire you can save your document; call it arc with your initials.




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Spline

CATIA V5R6

This will cover the steps necessary to build a spline. This icon is useful to create arbitrarysmooth curves through a series of points. You need to specify a number of locations for thespline to pass through and it will create a smooth curve passing through them. The lastpoint on the spline needs to be defined by double-clicking.

Select the spline icon. It should be highlighted.

Select the origin point of the sketch plane. This will specify one endpoint for the spline.The other locations will define the shape of the spline.

Select up and to the right. This specifies the second location for the spline to passthrough.

Select down and to the right of the previous location. This specifies the third location forthe spline to pass through.

Select up and to the right of the previous location. This specifies the fourth location forthe spline to pass through.

Double-click down and to the right of the previous location. By double-clicking thislocation you are telling the computer that this location is the other endpoint of the spline.The finished spline should appear similar to the one shown below.

Save your document, if you wish, under the name spline with your initials.




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Connect Curve

CATIA V5R6

This will cover the steps necessary to build a connect curve. This icon is useful to createarbitrary smooth curves connecting two elements. You need to specify the two endpoints ofthe connecting curve along the existing elements that you wish to connect. This option hastwo sub-options which will appear to the right of your sketcher icons in the bottom toolbaror wherever you located them.

This will connect the two elements with an arc

This will connect the two elements with a spline

In this exercise you will use the connect with spline option, but feel free to use both options.

Select the spline icon. It should be highlighted.

Create two splines that look similar to the diagram shown below. You will have to referto the previous exercise if you need help creating the splines.

Select the connect curve icon. It should be highlighted.




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Select the connect with spline icon.This icon is located next to your sketcher iconsin the bottom toolbar or wherever you located them.

Select on the spline near the location shown below. Where you select the elementdetermines one of the endpoints of the connect curve.

Select on the other spline near the location shown below. This defines the other endpointand generates the connect curve. It should appear similar to the diagram shown below.

If you desire you can save your document. Call it connect curve with your initials.




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Ellipse

CATIA V5R6

This will cover the steps necessary to build an ellipse. This icon is useful to create ellipticalshapes. This is a conic shape that has certain mathematical properties useful for somedesigns. The first location you define is the center of the ellipse; the second one gives boththe orientation and one of the two diameters. Finally you define the other diameter byselecting another location.

Select the ellipse icon. It should be highlighted.

Select the origin point of the sketch plane. This will specify the center of the ellipse. Thenext location determines the orientation and length of the ellipse.

Select down and to the left. This determines the orientation and the length of the ellipse.The next location will define a location that the ellipse will pass through thereby definingthe width of the ellipse.

Select up and to the right of the previous location. This specifies a location that theellipse will pass through determining the shape of the ellipse. It should appear similar to theone shown below.

If you desire you can save your document: call it ellipse with your initials.




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Parabola

CATIA V5R6

This will cover the steps necessary to build a parabola. This icon is useful to createparabolic shapes. This is another conic curve that has certain mathematical propertiesuseful for some designs. You have to define a location for the focus of the parabola andthen the apex, or tip. Finally you must define the two endpoints for the parabola.

Select the parabola icon. It should be highlighted.

Select the origin point of the sketch plane. This will specify the focus of the parabola.The next location determines the apex or tip of the parabola.

Select below the origin. This determines the apex. A parabolas shape is determined bythe distance between the focus and the apex. The next two locations define the starting andending points of the parabola.

Select up and to the left of the previous location. This specifies the starting location forthe parabola.

Select up and to the right of the previous location. This specifies the ending location forthe parabola and it should appear similar to the one shown below.

If you desire you can save your document. Call it parabola with your initials.




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Hyperbola

CATIA V5R6

This will cover the steps necessary to build a hyperbola. A hyperbola is another conic curvethat has certain mathematical properties useful for some designs. You have to define alocation for the focus of the hyperbola and then the center of the hyperbola. After definingthose locations then you must specify a location for the apex or tip of the hyperbola. Thenyou can define a starting point and ending point for the hyperbola.

Select the hyperbola icon. It should highlight.

Select the origin point of the sketch plane. This will specify the focus of the hyperbola.The next location determines the center of the hyperbola.

Select a location well above the origin. This determines the center of the hyperbola. Thenext location defines the apex, or tip.

Select somewhere between the origin and the previous location. This determines theapex, or tip, of the hyperbola. The three locations you have specified so farfocus, center,and apexdetermine the shape of the hyperbola. Next you will specify its endpoints.

Select to the left of the origin point. This specifies one endpoint of the hyperbola.

Select to the right of the origin point. This specifies the other endpoint. The finishedhyperbola should appear similar to the one shown below.

If you desire you can save your document. Call it hyperbola with your initials.




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Conic

CATIA V5R6

This will cover the steps necessary to create a conic. There are many sub-options availableunder this icon. Depending on which options you select will determine what you can definewhen creating the conic. You can define five points, tangency at the first end, tangency atthe second end or tangency at both ends. This exercise will only cover creating a conic withtangency at both ends but feel free to use the other options until you are comfortable with

them.

Define tangency at the first end

Define tangency at the second end

Define tangency at both ends

Select the conic icon. It should highlight.

Select the tangency at both ends icon.This will allow you specify a location thatwill define the tangency at both ends of the conic.

Select the origin point. This defines the first end point of the conic.

Select a location to the right of the origin. This defines the second end point of the conic.

Select a location above and between the two points. This defines the tangency at bothends, from the endpoint to this point.

Select below the last location. This defines the actual shape of the conic based on thepreviously defined tangencies. The conic should appear.

If you desire you can save your document. Call it conic with your initials.




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Line

CATIA V5R6

This will cover the steps necessary to build a line. Use this icon for straight edges of yourprofiles. To create a line, you only need to specify the two endpoints.

Select the line icon. It should highlight.

Select the origin point of the sketch plane. This will specify one endpoint of the line.The next location specifies the other endpoint.

Select up and to the right of the origin. This determines the other endpoint. The lineshould appear similar to the one shown below.

If you desire you can save your document. Call it line with your initials.




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Unlimited Line

CATIA V5R6

This will cover the steps necessary to build an unlimited line. Use this icon for straightedges of your profiles that you do not want a specific length but instead you want it to goout essentially forever. This icon has three sub-options that will allow you to create ahorizontal, vertical or point to point unlimited line. Depending on which sub-option youchoose determines what is necessary to create the line. In this exercise you will just use the

point to point sub-option but feel free to use the other options to get familiar with them.

Select the unlimited line icon. It should highlight.

Select the origin point of the sketch plane. This will specify a point along the line. Thenext location specifies another point along the line.

Select up and to the right of the origin. This defines another point along the line. Theline should pass through those two locations and go out essentially forever. It should appearsimilar to the diagram shown below.

If you desire you can save your document. Call it unlimited line with your initials.




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Bi-tangent Line

CATIA V5R6

This will cover the steps necessary to build a bi-tangent line. A bi-tangent line is tangent totwo other elements such as circles. All you have to do is specify the two elements that youwish the line to be tangent to.

Select the circle using coordinates icon. You will create two circles using this icon.

Create 2 circles using the following coordinates. H=0, V=3, Radius=1; H=2, V=0,Radius=.5 Two circles should appear as shown below.

Select the bi-tangent line icon. It should highlight.

Select the right side of the larger circle. This will specify the line to be tangent to thatside of the circle. The next location specifies the other element that the line is to be tangentto.




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Select left side of the smaller circle. This makes the line tangent to that side of the circleas well. The line should appear similar to the one shown below.

If you desire you can save your document with the name bitangent with your initials.




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Bisect Line

CATIA V5R6

This will cover the steps necessary to build a bisect line. A bisect line splits the anglebetween two other lines. All you have to do is specify the two lines that you wish to bisectand the bisecting line will be created.

Select the line icon. It should be highlighted.

Create two lines similar to the ones shown below. Start each line at the origin.

Select the bisect line icon. It should be highlighted.

Select one of the lines. This defines one side of the sector that will be bisected.

Select the other line. A bisecting line should appear similar to the one shown below.

If you desire you can save your document with the name bisect with your initials.




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Axis

CATIA V5R6

This will cover the steps necessary to build an axis. An axis can be used for mirroring or forcreating a shaft or groove in Part Design. To create an axis, all you have to do is specifytwo endpoints.

Select the axis icon. It should be highlighted.

Select the origin point of the sketch plane. This will specify one endpoint of the axis.Next you will specify the other endpoint.

Select above the origin. This determines the other endpoint of the axis and it shouldappear similar to the one shown below.

If you desire you can save your document. Call it axis with your initials.




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Point

CATIA V5R6

This will cover the steps necessary to build a point. Points are useful for constraining yourprofile. All you have to do is specify a location for the point.

Select the point icon. It should be highlighted.

Select up and to the right of the origin. This will specify a location for the point. Youalso have the option of selecting an element to put the point on the element at the specifiedlocation. That option will automatically add a coincidence constraint. The point shouldappear similar to the one shown below.

If you desire you can save your document and call it point with your initials.




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Point using coordinates

CATIA V5R6

This will cover the steps necessary to build a point using coordinates. This icon is useful forgenerating points at specific locations. Normally this is used to position an item within yourprofile. All you have to do is enter the coordinates in the window that opens.

Select the point using coordinates icon.and the icon should be highlighted. A Point Definition window should appear

Notice that you can enter the coordinates using the cartesian coordinate system or the polarcoordinate system. You will want to use the cartesian coordinate system for this exercise.

Enter 2 for H and 2 for V. This will generate a point at that coordinate and it shouldappear similar to the one shown below.

Notice the dimension constraints were automatically generated when you created the point.If you desire you can save your document and call it coord point with your initials.




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Equidistant points

CATIA V5R6

This will cover the steps necessary to build equidistant points. This icon is useful forgenerating points equidistant along an element. You have to specify an element and thenspecify the origin or the starting location for your spacing. Then you have to specify thespacing and the number of points to be spaced.

Select the three point arc icon. It should be highlighted.

Select the origin point of the sketch plane. This specifies an endpoint of the arc. Theother two locations will determine the shape of the arc.

Select up and to the right of the origin. This defines the second location for the arc.

Select down and to the right of the previous location. This defines the third location forthe arc to pass through and the arc should appear similar to the one shown below.

Select the equidistant points icon.It should highlight. You will now have to specifythe element you want to create equidistant points on.

Select the arc. This is the element that you are going to create equidistant points along.The next location will determine the starting point for the spacing of the points.

Select the right end of the arc. This determines the starting point for the creation of theequidistant points. An Equidistant Point Definition window should appear.

There are three different Parameters options. Points & Length, Points & Spacing, andSpacing & Length. In this exercise you will choose the Points & Spacingparameter.




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Enter 1 for Spacing and 3 for New Points. This specifies the distance between the pointsand how many points that you want generated.

Select OK. The points should appear similar to the ones shown below.

Notice that constraints were automatically generated for you. If you desire you can saveyour document and call it equidist point with your initials.




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Intersection Point

CATIA V5R6

This will cover the steps necessary to create a point at the intersection of two elements. Allyou have to do to create an intersection point is select the two elements.


Create two lines as shown below.

Select the intersection point icon. It should be highlighted.

Select one of the lines. It will use this line as one of the intersecting elements.

Select the other line. The two lines do not have to actually intersect as long as they wouldintersect if they were to continue in length. The intersection point should appear withconstraints as shown below.

If you desire you can save your document and call it intersection point with your initials.




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Projection Point

CATIA V5R6

This will cover the steps necessary to create a point by projecting a point to an element. Allyou have to do to create a projection point is select a point that you want to project and thenselect the element that you want to project the point to.


Create a line as shown below.

Select the point icon. It should be highlighted.

Create a point as shown below.

Select the projection point icon. It should be highlighted.

Select the point. You will use this point to project to the line.




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Select the line. A projected point is created and should appear with constraints as shownbelow.

If you desire you can save your document and call it projection point with your initials.




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Profiles

CATIA V5R6

This part will discuss the profile icon which the most commonly used icon when definingsketches. The purpose of these exercises are to demonstrate the usefulness of the profileicon and how to use it effectively. You can use it to generate basic shapes or more involvedshapes all in one operation.

The most common use is to specify corner points of your desired profile and it will generatelines between those points until you either click on the profile icon again, double-click alocation or select a location that closes the profile. You also can use two other icons that arelocated in the bottom toolbar to generate curves as you are defining the profile. Also whileusing the line icon of profile you can generate curves by holding down the left mouse buttonand dragging it in the direction you want the curve to go and it will know to create a circularcurve from that location.

As you are defining the profile occasionally the element will appear in blue before definingthe endpoint or a constraint may appear in blue. If you select the endpoint while the elementor the constraint is blue then it will automatically put those constraints on the geometry

when it is created. This is useful when defining horizontal and vertical lines because if theyappear in blue while you are defining them then the horizontal and vertical constraint willautomatically be generated on the element.

You will now build various profiles to get experience using the various capabilities of theprofile icon. The first profile you are going to build looks like the one shown below.


Select the profile icon. It should be highlighted.

Select the origin point of the sketch plane. This specifies the starting point for yourprofile. When you specify the next location make sure the line appears blue before selectingthe location. This will put the vertical constraint on your element automatically.


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Select a location above the origin. If the line appeared blue before you selected the secondlocation then it should appear with the vertical constraint on it like the one shown below.Make sure when you specify the other locations that those elements appear blue as wellbefore selecting the location.

Select a location to the right of the previous location. It should appear with thehorizontal constraint on the element and look similar to the diagram shown below.

Select a location below the previous location along the H axis. It should appear similarto the diagram shown below.


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Select a location to the left of the previous location. It should appear similar to thediagram shown below.

Select a location above the previous location. It should appear similar to the diagramshown below.

Select a location to the left of the previous location. It should appear similar to the

diagram shown below.




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Select a location below the previous location. It should appear similar to the diagramshown below.

Select the origin point of the sketch again. The profile should appear similar to thediagram shown below and exit the profile icon.

If you desire you can save your document and call it profile1 with your initials.

Save the document and close it.




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You will now perform a sketch of a part using the three point arc icon in the bottom toolbarduring the sketch. This icon allows you to define a three point arc while using the profileicon. The second profile you are going to build looks like the one shown below.



Select the origin point of the sketch plane. This specifies the starting point for yourprofile. When you specify the next location make sure the line appears blue before selectingthe location. This will put the vertical constraint on your element automatically.

Select a location above the origin. If the line appeared blue before you selected the secondlocation then it should appear with the vertical constraint on it like the one shown below.Make sure when you specify the other locations for the lines that they appear blue as wellbefore selecting the location.

Select a location to the right of the previous location. It should appear similar to thediagram shown below.




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Select the three point arc icon in the bottom toolbar.This icon will allow you tospecify a location for the arc to pass through and an ending location for the arc. The arc willbegin at the last location specified which is the endpoint of the line.

Select up and to the right of the previous location. This specifies the location that the arcshould pass through. The next point specifies the endpoint of the arc.

Select down and to the right of the previous location. This location should be straightacross from the start of the arc. It should appear similar to the diagram shown below.Notice how the three point arc icon in the bottom toolbar automatically turned off and theline icon turned on.

Select to the right of the previous location. It should appear similar to the diagram shownbelow.

Select below the previous location. It should appear similar to the diagram shown below.




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Select to the left of the previous location. It should appear similar to the diagram shownbelow.

Select above the previous location. It should appear similar to the diagram shown below.

Select to the left of the previous location. It should appear similar to the diagram shown

below.

Select the three point arc icon in the bottom toolbar.This icon will allow you tospecify a location for the arc to pass through and an ending location for the arc. The arc willbegin at the last location specified which is the endpoint of the line.

Select up and to the left of the previous location. This specifies the location that the arcshould pass through. The next point specifies the endpoint of the arc.

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Select down and to the left of the previous location. This location should be straightacross from the start of the arc. It should appear similar to the diagram shown below.Notice how the three point arc icon in the bottom toolbar automatically turned off and theline icon turned on.

Select to the left of the previous location. It should appear similar to the diagram shown

below.

Select below the previous location. It should appear similar to the diagram shown below.




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Select the origin point of the sketch again. The profile should appear similar to thediagram shown below and exit the profile icon.






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You will now perform a sketch of a part using the tangent arc icon in the bottom toolbarduring the sketch. This icon allows you to define an arc tangent to the last line while usingthe profile icon. The third profile you are going to build looks like the one shown below.



Select the origin point of the sketch plane. This specifies the starting point for yourprofile.

Select to the right of the origin. If the line appeared blue before you selected the secondlocation then it should appear with the horizontal constraint. It should appear similar to thediagram shown below.

Select the tangent arc icon in the bottom toolbar.This icon will allow you tospecify an endpoint for an arc starting at the last location. It will automatically put atangency constraint on your profile at the initial point.




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Select up and to the right of the previous location. This specifies the endpoint of the arc.It should appear similar to the diagram shown below.

Select up and to the right of the previous location. It should look similar to the diagramshown below.


Select up and to the left of the previous location. This specifies the endpoint of the arc.It should appear similar to the diagram shown below.




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Select to the left of the previous location. It should appear similar to the diagram shownbelow.


Select down and to the left of the previous location. This specifies the endpoint of thearc. It should appear similar to the diagram shown below.




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Select down and to the right of the previous location. It should look similar to thediagram shown below.


Select the origin point of the sketch plane. This specifies the endpoint of the arc. Itshould appear similar to the diagram shown below.






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You can also create tangent arcs using the mouse instead of using the tangent arc icon in thebottom toolbar. In order to create an arc instead of a line you need to press and hold the leftmouse button down and drag the mouse in the general shape of the arc. Then you can selectthe endpoint of the arc. The following steps will walk you through the steps necessary toperform this operation, however you may need to see it done in order to really understandhow it works.

You will generate the same profile you created in the previous exercise except you will usethe mouse to generate the arcs instead of the tangent arc icon. The final sketch should looksimilar to the one shown below.



Select the origin point of the sketch plane. This specifies the starting point for yourprofile.

Press and hold the left mouse button at a location to the right of the origin. Thisspecifies the endpoint of the line. You need to continue holding the left mouse button downin order to specify the tangent arc which will begin at this location.

While holding down the left mouse button drag your mouse in the direction that you

want the arc to follow.

Select a location up and to the right of the previous location. This will specify theendpoint of the arc. It should appear similar to the diagram shown below.




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You can continue this process to complete the sketch. You will probably need to practicethis sketch a few times using this option in order to become proficient. It is a much quickermethod of creating tangent arcs then using the icon in the bottom toolbar.

Finish sketching the part using the drag option for the tangent arcs. It should appearsimilar to the one shown below.

There is no need to save this sketch since it is similar to the previous one.




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Now that you have tried the various options with the profile icon you are ready to sketchsome practice sketches.

Try sketching the following sketches and save them as profile4, profile5 and profile6respectively.

Sketch the profile shown below and save asprofile4 with your initials.




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CATIA V5R6





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Constraints

CATIA V5R6

Constraints are similar to dimensions and they allow you to force your sketch to be an exactshape. Sketches without constraints generally are not accurate enough for your design andtherefore it is necessary to put constraints on your sketch to make it an exact size.

There are many types of constraints and most are listed below.

Dimensional Constraints

Distance

Length

Angle

Radius/Diameter

Semimajor axis

Semiminor axis

distance between two elements

length of an element

angle between two elements

radius or diameter of a circle or arc

semimajor axis of an ellipse

semiminor axis of an ellipse

Geometrical Constraints

Symmetry

Midpoint

symmetric about an axis or line

forces an element to be located at the midpoint of anotherelement

forces three points to be equidistant from each other

positions an element so it will not move

aligns one element with another

makes a circle or arc positioned concentric to another circle orarc

makes an element tangent to another element

forces a line to be parallel to another line

forces a line to be perpendicular to another line

makes a line be positioned horizontally

Equidistant point

Fix

Coincidence

Concentricity

Tangency

Parallelism

Perpendicularity

Horizontality

www.cadfamily.comVerticalitymakes a line be positioned vertically

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When defining constraints on your sketch the color of the elements of the sketch will changecolor depending on the status of the element. The table below shows the default colors andthe corresponding status.

Color

White

Green

Purple

Black

Red

Status

Not constrained

Perfectly constrained

Over constrained

Unresolved constraint

Invalid geometry

There are a few icons that allow you to generate constraints. Those icons are shown below.

Constraint by dialog icon allows you to define constraints by selecting them from awindow.

Most commonly used constraint icon to define basic constraints on elements andbetween elements.

Allows the computer to automatically put constraints on your sketch. Sometimesthis is useful to get a start on the constraints.

Allows for the animation of constraints. This is useful to see how the sketch wouldchange based on a constraint varying in size.

Normally, the goal is to perfectly constrain your sketch so that it is completely definedaccording to your specifications. Therefore you normally want your sketch to appear greenwhen leaving the Sketcher to go to Part Design.

The first thing you need to remember is that sometimes when you built your sketchconstraints were automatically generated. This was caused by two icons located in thebottom toolbar. One is for geometrical constraints and the other is for dimensionalconstraints.

Geometrical constraints

Dimensional constraints

By default these two icons are selected. You should have seen some of the geometrical anddimensional constraints generated in your previous exercises. In the following exercisesyou will sketch the shape shown and then the steps will walk you through constraining thesketch.


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Sketch the profile shown below and save as constraint1 with your initials. You shouldmake sure that the coincidence constraint appears in blue when defining the origin point ofyour sketch. That constraint will not appear after creating the sketch it is implied.

Notice some constraints were automatically generated. You will now put additionalconstraints on your profile to make it perfectly constrained.

Select the constraint icon. This will allow you to define a constraint.


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Select the bottom horizontal line and locate the constraint below the line. A lengthconstraint should appear underneath the horizontal line. The value that appears for you maynot be the same as shown below.

You can use the constraint icon for almost all of the dimensional constraints. You will nowuse it to generate a constraint between two elements.


Select the horizontal line above the bottom one. This defines the first element. You willnow define the second element to create a distance constraint between the two elements.




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Select the horizontal line above the previous one and position the constraint to theright. It should appear similar to the diagram shown below except the value may bedifferent.

You can also use the constraint icon to put some geometric constraints on elements. Youwill now use the constraint icon to make the angled line have the horizontal constraint.


Select the angled line. A constraint will appear but instead of positioning the constraint ata location you will now press the right mouse button on the constraint.




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Press the right mouse button while on the constraint. Various options appear in awindow as shown below.

Select the Horizontal option. This puts the horizontal constraint on the element. It shouldappear similar to the diagram shown below.

You will learn more about the other options that appear in the window later. Since it is notalways convenient to have to press the constraint icon each time you want to generate aconstraint, there is a way to make it active for multiple constraints. To do this you have todouble click on the icon using the left mouse button. This will keep the icon activated untilit is turned off. You will do that and then finish constraining your sketch.


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Double click on the constraint icon with the left mouse button.icon for multiple uses.

CATIA V5R6

This activates the

Select the bottom right vertical line and position the constraint to the right. It shouldappear similar to the diagram shown below but it may have a different value.




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Select bottom horizontal line and then the horizontal line above the 1.5 line andposition it to the right. It should appear similar to the diagram shown below but it mayhave a different value.




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Select the bottom horizontal line and then the top horizontal line and position it to theright. It should appear similar to the diagram shown below but it may have a differentvalue.




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Put the horizontal and vertical constraints on all of the elements that do not alreadyhave them by selecting the element and then right clicking the constraint and choosingHorizontal or Vertical. It should appear similar to the diagram shown below.

You will now put a coincidence constraint on two elements while the constraint icon is stillactive.

Select the vertical line between the base and the shelf. This selects the first element, butinstead of positioning a constraint you will now select a second element.

Select the vertical line between the shelf and the top of the sketch. This selects thesecond element. Now, you will right click on the constraint and choose the Coincidenceoption.




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Press the right mouse button while on the constraint. Various options appear in awindow as shown below.

Select the Coincidence option. This makes the two elements coincident with one another,meaning that they line up with one another. Your sketch should now appear similar to theone shown below but it may have different values.

Notice the part is almost perfectly constrained (green color). You will now finishwww.cadfamily.comconstraining the sketch while the constraint icon is still active.The document is for study only,if any tort to your rights,Please inform us,we will delete it

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Select the left most vertical line and then the next top vertical line and position theconstraint above the sketch. This constrains the location of both of the coincident linesdue to the coincidence constraint. All that is left is the vertical line of the shelf. It shouldappear similar to the diagram shown below but it may have different values.




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Select the left most vertical line and the vertical line at the end of the shelf and positionthe constraint above the sketch. This will put the final constraint on your sketch and itshould appear all in green. It should also look similar to the diagram shown below but mayhave different values.

You will now modify the values of your constraints to force your sketch to be a specificsize. You can change the values of the constraints any time after they are created, you donot have to perfectly constrain your part ahead of time. The first thing you have to do is todeactivate the constraint icon.




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Select the constraint icon to turn it off.The icon should no longer appearhighlighted. As you experienced, it is much faster to constrain a sketch by forcing theconstraint icon to stay active by double clicking on it instead of having to select it each time.

To change the values of the constraints all you have to do is double click on the value andthen key in a new value. You can move the position of the constraint as well by selecting

the constraint and holding down the left mouse button you can drag the constraint to a newposition. If you want to relocate just the value then you can hold down the left mousebutton on the value, however, if you want to relocate the value along with the constraintarrows then you must hold down the left mouse button on the arrow lines.

Double click on the constraint representing the total height of the sketch. A windowappears as shown below but it may have a different initial value.

Change the value to 7.00 and press OK. Notice that the sketch automatically changed sothat the height is now seven inches. You will continue to change values until all of theconstraints are set to their proper values.




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Change all of the constraints to the values shown below. The sketch should look justlike the one shown below.

Save your document.




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Normally you do not have to put all of the horizontal and vertical constraints on your sketchto make it perfectly constrained. When you put a distance constraint between one elementand another it is assumed that the two elements are parallel to each other.

Remember those constraint option windows that appeared when right clicking theconstraint.

These allow you to specify various constraints using the constraint icon that you normallycould not define. Most of the options are the same as the options that were describedbefore. However there are a few new options that you need to be aware of in order toeffectively use this icon.

Reference This creates a reference dimension that is shown only to let you know thevalue. You can not change the value of a reference dimension, it onlyreflects the actual value of the dimension. Therefore if you put constraintson your sketch that changes that dimension it will be reflected in the value.

Notice that a reference dimension has parentheses around the value.




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Horizontal Measure Direction

Vertical Measure Direction

Default

CATIA V5R6

Puts the distance or length constraint to measurehorizontally instead of the default orientation.

Puts the distance or length constraint to measurevertically instead of the default orientation.

Horizontal

Vertical




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Swap Location

CATIA V5R6

This swaps the constraint to go to the other side of the element.Sometimes when you sketch you may get a line to the wrong sidewith respect to another and when you constrain it, you can not give ita negative value in order for it to switch sides. This is a good optionto use in that circumstance, however, you can also just drag anelement over using the left mouse button.

After:Before:

Allow symmetry line This allows you to define a symmetry line after selecting twoelements that you want to be symmetric to each other. After selectingthe two elements, use your third mouse button to activate the menu,selectAllow symmetry line and then select the symmetry line.




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For the rest of the constraint exercises the initial sketch will be provided for you to make iteasier for you to concentrate on the actual constraints.

Open the constraint2 document and save with your initials. This will open the partcalled constraint2. In order to work with the sketch you will need to go to the Sketcher andchoose the sketch from the specification tree.

Select the Sketcher icon and then select the Sketch from the specification tree.This takes you into the sketch and then you can start adding constraints. A diagram of thesketch is shown below.

Notice that the bottom horizontal line is already constrained. You will now be constrainingthis sketch to look like the following diagram.




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Double click on the constraint icon with the left mouse button.the constraint icon to be used more than once.

CATIA V5R6

This will activate

Select the bottom horizontal line and position the constraint below the line. It shouldappear similar to the diagram shown below.

Select the bottom horizontal line and the bottom right angled line and position the constraint to the right. It should appear similar to the diagram shown below.




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Select the bottom horizontal line and the bottom left angled line and position theconstraint to the left. It should appear similar to the diagram shown below.

Select the left curve and the bottom left angled line. This will make a constraint but youare going to press the right mouse button to choose the Tangency option.

Press the right mouse button while on the constraint. A window should appear withconstraint options.

Select the Tangency option. This will force the line and the curve to be tangent to oneanother.




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Select the left curve and position the constraint to the left. This puts a radius constrainton your curve.

Select the right curve and position the constraint to the right. This puts a radiusconstraint on your curve. It should look similar to the diagram shown below.

Select the bottom left angled line and then the top left angled line.

Press the right mouse button while on the constraint. A window should appear withconstraint options.

Select the Allow symmetry line option. This will allow you to define a symmetry line.

Select the dashed line. This will put a symmetry constraint on the two angled lines using

the dashed line as a symmetry line. It is important to select the symmetry line last. Also, itshould be noted that this symmetry line is a construction line not a standard line andtherefore will not show up in Part Design. You will learn more about construction elementslater in this course.




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