catia v5 exercicios part design nv

CATIA

Part Design Exercicios

TRV5PD

TRV5PD (Exercicios) – Página 2

Rua Cotoxó, 411. Sala 44. CEP 05121-000. São Paulo. SP, Tel: XX-11-3675-2799. Fax: XX-11-3676-1363

www.nvsistemas.com.br

Maiores Informações: NV Sistemas Ltda. Rua Cotoxó, 611 - Sala 44. 05021-000. São Paulo. SP. Tel: (0XX) 11 3675-2799 Fax: (0XX) 11 3676-1363 www.nvsistemas.com.br

Esta publicação é parte integrante do conjunto de treinamentos oferecidos pela NV Sistemas e não pode ser vendida separadamente.

Julgamos que as informações contidas nesta publicação sejam exatas, entretanto, a NV Sistemas não assume nenhuma responsibilidade pelo seu uso. As informações estão sujeitas a alterações sem aviso prévio e não devem ser interpretadas como um compromisso da NV Sistemas.

CATIA é marca registrada da Dassault Systèmes S. A.




Table of Contents Piston ..............................................................................................................................5

Creating the Main Pad..................................................................................................5 Creating the Symmetrical Cut-out.................................................................................7 Creating the Cylindrical Boss......................................................................................13 Creating Pockets ........................................................................................................14 Creating a Through Hole ............................................................................................17 Creating Fillets............................................................................................................19 Changing the color .....................................................................................................25

Angle Bracket ................................................................................................................27 Setting Part Design Parameters .................................................................................28 Defining the Pads for the Bracket ...............................................................................28 Defining the Pilot Holes and the Angular Pads for the Bracket...................................32 Defining the Clevis Through Hole and Fillets..............................................................36

Building the Hinge .........................................................................................................37 Car Jack Support...........................................................................................................48

Creating Profiles and Pads .........................................................................................50 Creating Draft Angles .................................................................................................53 Creating Edge Fillets ..................................................................................................55 Creating Additional Profiles and Pads ........................................................................57 Creating Edge Fillets for the Additional Pads .............................................................60 Creating Holes............................................................................................................62 Creating Grooves .......................................................................................................83 Creating a Chamfer. ...................................................................................................86 Creating Pockets. .......................................................................................................88 Creating Edge Fillets. .................................................................................................91

Side Toolhead ...............................................................................................................93 Creating Profiles, Pads and Draft Angles ...................................................................95 Creating Pockets and Draft Angles.............................................................................97 Creating Profiles, Pads and Draft Angles .................................................................103 Creating Holes..........................................................................................................106 Creating Pockets ......................................................................................................119 Creating Fillets..........................................................................................................122 Creating Chamfers ...................................................................................................127

Tee Fitting....................................................................................................................129 Creating Pads...........................................................................................................130 Draft Angles and Fillets.............................................................................................140 Holes Creation..........................................................................................................144 Mirroring ...................................................................................................................151 Mold Core: Shaft Creation ........................................................................................154 Mold Core: Filleting...................................................................................................158 Mold Core: Shaft Creation ........................................................................................159 Mold Core: Filleting...................................................................................................161 Removing Body ........................................................................................................162

Meat Mincer Screw......................................................................................................164 Creating Profiles and Helixes ...................................................................................165 Creating a Loft ..........................................................................................................180 Creating Tri-Tangent Fillets ......................................................................................182 Creating Variable Radius Fillets ...............................................................................185 Creating a Pad..........................................................................................................188




Creating a Groove ....................................................................................................191 Creating a Pad..........................................................................................................201 Creating a Hole.........................................................................................................203 Creating a Chamfer ..................................................................................................206

Pedal Support..............................................................................................................207 Rib Creation..............................................................................................................209 Circular Pattern.........................................................................................................212 Tri-Tangent Fillets.....................................................................................................213 Filleting .....................................................................................................................215 Rib Creation..............................................................................................................219 Filleting .....................................................................................................................222 Pad Creation.............................................................................................................225 Filleting .....................................................................................................................228 Hole Creation............................................................................................................235 Circular Pattern.........................................................................................................240 Threaded Hole Creation ...........................................................................................241 Assembling the Crank Set ........................................................................................244




Piston We will design this Piston to practice the various ways of using both the Sketcher and Part Design workbenches for designing parts. Load the starting piston part from the companion, and if necessary, activate Start + Mechanical Design + Part Design (DO NOT DO IT IF YOU ARE ALREADY IN THE PART DESIGN WORKBENCH)

Creating the Main Pad In this section, we are going to build the main pad




Now, let us do it !

1. Select the Pad icon .

2. Select the sketch to be extruded.

3. Enter the following parameters in the dialog box, and then select OK.

You get:




Creating the Symmetrical Cut-out In this section we are going to build the symmetrical cut-out.

We are going to insert a body in which we are going to create a pad and its symmetric.

4. Select Insert + Body




5. Select the Sketcher icon .

6. Select the ZX plane.

7. Select the Profile icon .

8. Sketch approximately the following profile.




9. Using the constraint icon, constrain the profile as shown here after.

10. Select the Exit icon to leave the Sketcher .

11. Using the Pad icon, create a pad with the following parameters.

You get:




12. In order to get the symmetrical pad, select the Mirror icon .

13. Select the YZ plane.

14. Select OK in the dialog box.

You get:




15. Now, we are going to Remove Body 1 from the main body. Place the cursor on Body 1 then select

Remove from the contextual menu.




You get:

Creating the Cylindrical Boss In this section, we are going to create the following bosses.

1. On the YZ plane, sketch and constrain the following circle

2. Once you have left the sketcher, create a pad (with the previously created circle) with the following

parameters.




You get:

Creating Pockets In this section, we are going to create the following pockets.

1. On the YZ plane create and constrain the following arc.




2. Once you have left the sketcher, create a pocket (With the previously created arc) with the

following parameters.

You get:




3. On the XY plane create and constrain the following profile.

4. Once you have left the sketcher, create a pocket (With the previously created profile) with the

following parameters.




You get:

Creating a Through Hole In this section, we are going to create the following hole.




1. Select the Hole icon .

2. Select the following face.

3. Create a hole with the following parameters.




You get:

Creating Fillets In this section, we are going to create the following fillets.




1. We are going to create first the following fillet. So select the Edge Fillet icon .

2. Select the four following edges.




3. Enter 3 in the Radius field of the dialog box, then select OK.

You get:

4. Using the same method, create an edge fillet with a radius of 5 at the following location.




You get:





You get:

Changing the color In this section, we are going to change the piston color.

1. Place the cursor onto PartBody, then select properties from the contextual menu (MB3).




2. Select a color in the Fill combo, then select OK.




You get:

Angle Bracket We will design this small bracket to practice the various ways of using both the Sketcher and Part Design workbenches for designing parts. One of the tools we will use in many different cases is the Sketching of a Profile and extruding Pads.




Setting Part Design Parameters

1. Create a new Part and select mm as model unit by going to Tools + Options + General + Units.

2. Set the Sketcher Primary Spacing to 20 mm. and graduation to 10 by going to Tool + Options + Part + Sketcher.

3. Go to Tools + Options + Part + Display and make sure Relations is checked.

4. Click OK and exit Option.

Defining the Pads for the Bracket The views shown below are provided as an overall reference for dimensions and hole locations.




1. We will first define all the sketches / pads for the Bracket. We will start with the 3 mm. thin flange.

2. Select the XY plane and enter the Sketcher. Draw the first sketch using Rectangle icon and dimension as follows:




3. Exit Sketcher and create a Pad with height of 26 mm above sketch.

We will now create the base pad of the part:




4. Reselect the XY plane and go back into Sketcher. Use Profile to sketch then constrain

the new contour to the boundaries of the existing Pad and apply the appropriate dimensions

.

5. Extrude this second Pad to a height of 4 mm.




Defining the Pilot Holes and the Angular Pads for the Bracket Next we would like to create the two angle flanges (clevis).

To create this geometry, we will require an angular Plane at 24 Degrees with respect to the YZ plane in order to sketch our profile. Since our drawing calls out the position of these flanges from the position of the pilot hole located between the flanges, we will make our plane pass through the center of this hole so that we will readily have available the values of the extrusion limits. Since our 24 Degrees Plane will pass through the center of one of the pilot holes, we will need to locate this hole in the model. Consequently, we might as well create all the pilot holes first.

1. Position the first hole by first selecting the reference edges, the Hole feature icon, and finally the top of the pad into which the holes are drilled. Put in the appropriate locating dimensions and the hole diameter per the part drawing at the beginning of this exercise. Use the Up to Next option.

2. Position the second hole by first selecting the reference edges, the Hole feature icon, and finally the top of the pad into which the holes are drilled. Put in the appropriate locating dimensions




and the hole diameter per the part drawing at the beginning of this exercise. Use the Up to Next option.

3. Create the third hole by first selecting the rounded edge the Hole feature icon , and finally the top of the pad into which the holes are drilled. Put the appropriate hole diameter (3), the hole is automatically centered on the rounded edge. Use the Up to Next option.

We will now create the 24 Degrees plane through the center of one of the pilot holes. To do it, display the Plane icon by selecting the View + Toolbars + Reference Elements (Extended)




4. Select the Plane icon and create the required plane using the Plane Type of “Angle/Normal to Plane”. Select the vertical pad wall as reference and the pilot hole as the rotation axis for the plane. Put in –24 Degrees to get the desired orientation.

5. To redefine the PartBody as the In Work Object place the cursor on the PartBody in the tree then

select the Define In Work Object command from the contextual menu.




6. Select the plane you just created and go into the Sketcher to create the following profile. As

before, constrain the profile to the existing geometry and apply the appropriate dimensions.

7. Create a pad from this sketch with a thickness of 4 mm. (use the 2 limits option).

We will now create the other Clevis by using the Rectangular Pattern tool (you can find this tool under Insert/Transformation Features)

8. Click on the Rectangular Pattern Icon , select the existing Clevis, select the red edge below for the reference direction, and put in 2 instances spaced at 16 mm.




Defining the Clevis Through Hole and Fillets

1. In order to define a concentric hole, select the outside R 13 edge of the left Clevis, the Hole tool

, then the outside face of this Clevis. Put in 6 mm for the diameter and use the “Up to Last” option.

Use Edge Fillet to create all the fillets. (You can multi-select edges by keeping the CTRL key pressed during selection.)

2. Create the R3 fillets (5 edges).




3. Create the R6 fillets (2 edges).

4. Finally, create the R8 fillets (2 fillets).

Building the Hinge In this exercise, you will build the hinge part using the following tools: sketcher, constraints, pad, pocket, hole, draft, fillet, mirror and pattern. First we describe and discuss the methodology used to build the hinge; you don’t have to read it - you can go ahead and build the hinge your way with the information given on this page.




1. Start a new CATPart.

2. Let’s start with a basic triangular pad, it will be the main pad. Enter the sketcher on the XY plane

.

3. Draw a rough sketch of the outer profile with Profile tool. Hint: draw the left edge of the triangle vertically in order to get the vertical constraint automatically.




4. Constrain the sides as show below:

5. Exit sketcher and use the triangle sketch to make the main pad in the positive OZ direction with a height of 7.5mm




6. Now, let’s draw the pocket. Enter the sketcher on the bottom plane of the main pad . Note that we draw the pocket profile on the bottom surface of the pad because later we want to be sure that the pocket bottom face position is linked to the Hinge thickness – if the thickness changes, the pocket will follow automatically.

7. Draw a rough profile for the pocket:

8. Constrain the profile to obtain the following triangle (Hint: use distance option in contextual menu)




9. Exit sketcher and with the triangle, make a pocket in the positive OZ direction and with the following parameters:

10. Let’s start now a first bearing. Enter the sketcher on the bottom face of the main pad .

11. Draw a 15 mm radius circle and constrain it to coincide (contextual menu) with the top vertex of the pocket.




12. Exit the sketcher and use the circle to make a cylinder pad in the positive OZ direction and using the up to plane limit type with the top face of the hinge:




13. Now let’s duplicate this first cylinder pad for the other bearings. We will duplicate it with a user

pattern – and not a simple copy & paste - to ensure that later if a modification is needed on the bearings, we will be able to do it only on one of them – the others will follow automatically.

Enter again the sketcher on the bottom surface of the main pad .

14. Draw 2 points anywhere on the grid. Sketch.4 is added in the tree.

15. Make each of these points coincide (contextual menu) with each of the remaining vertices of the pocket triangle (you may need to move the orientation of the part to see the small triangle).




16. Exit sketcher and select the cylinder pad. To apply the pattern, click on User Pattern and Sketch.4. Turn “Keep specifications” option on:

We will now stop working on the bearings to match the fabrication process: the holes are drilled at the end.

17. Now let’s fillet , the six sharp corner edges with a common radius of 5mm:




18. Let’s build a draft angle around the hinge. The pulling direction is the positive OZ direction, the angle is 3 degrees and the Neutral element is the bottom face of the hinge.

19. Fillet the following edges with a common radius of 2mm. (You may need to do it in several shots.)




20. Now let’s make the symmetrical part of the hinge using the bottom face as symmetry plane:

21. Now let’s come back to the bearings, and make a hole in one of them: • Select the Hole icon. • Select the following edge in order to center the hole :




• Select the following face in order to place the hole:

• Enter the following parameters:

You get:

22. We will use the same pattern to duplicate this hole : For the positions, use the same sketch that you used for the cylinder pads (You can select Sketch.4 from the tree). Turn “Keep specifications” option on.




23. You should get the following result. Save it.

Car Jack Support We will design this Car Jack Support to practice the various ways of using both the Sketcher and Part Design workbenches for designing parts.




Once CATIA is running, activate the Part Design Workbench by clicking on the New icon

and select Part

in the New dialog box. Click to validate.

Using the Tools -> Options command, be sure that you are working in millimeters.




Using the Tools -> Options command, be sure that the sketcher grid has the following parameters:

Creating Profiles and Pads In this section, we are going to build two necessary profiles that will allow you to create the main pad.

1. Activate the Sketcher icon , then select the XY plane.

2. Activate the Circle icon , then, using the grid, draw the following circle and cronstrain it (R=60).




3. Leave the Sketcher by selecting the Exit icon .

4. Now, activate the Pad icon . Using the previously created sketch, build a pad with the following parameters (do not forget to select

to validate the pad creation):

5. Now we return in the sketcher by selecting the Sketcher icon and the XY plane.

6. Create the second profile with two rectangles and two circles.




7. Add four corners to get the following profile.


9. Now, activate the Pad icon .




10. Using the previously created sketch, build a pad with the following parameters (do not forget to

select to validate the pad creation):

You get:

Creating Draft Angles In this session, we are going to draft angles.

1. Click on the Draft Angle icon , the Draft Definition dialog box appears.




2. Select the faces to be drafted and the neutral element.

You get:

3. Use the same methode to create the second draft. Use the following parameters.




You get:

Creating Edge Fillets In this session, we are going to build edge fillets.




1. Click on the Edge Fillet icon , the Edge Fillet Definition dialog box appears.

2. Select the edges to be filleted enter 30 as the radius, then select .

You get:

3. Using the same methode, create the following fillets.




You get:

Creating Additional Profiles and Pads In this session, we are going to build two other elements. We need to return in the sketcher to draw a profile.




1. Activate the Sketcher icon , select the XY plane then draw a circle as shown below.








You get:

5. We are going to create another profile with the following caracteristics. Activate the sketcher on

the YZ plane, and create and constrain the following profile.








You get:

Creating Edge Fillets for the Additional Pads In this session, we are going to create the following fillets.




1. Click on the Edge Fillet icon , the Edge Fillet Definition dialog box appears.

2. Click on the edges to be filleted, enter 3 as the radius then select .

You get:




Creating Holes In this session, we are going to build the following holes.

1. Select the following surface:




2. Click on the Hole icon and enter the following parameters in the Hole Definition dialog box.

3. We are going to move the hole center at the Origin point.




4. In the Hole Definition dialog box, click on the Positioning Sketch icon to constrain the hole.

Select the following point and edge.

5. Click on the Constraints Defined in Dialog Box icon




6. Click on Concentricity and validate with

You get:




7. Now we are going to create a counterbored hole.


9. Click on the hole icon and enter the following parameters, then select :




You get:




We are going to create another counterbored hole.

10. First, select the following face:

11. Click on the Hole icon and enter the following parameters:




12. Use the Positioning Sketch to constrain the center of the hole at the following coordinates as

shown below.




13. Leave the Sketcher by selecting the Exit icon . You get:

Now we can create all the other V-bottom holes. So select the following face

14. Click on the Hole icon and create a V-bottom hole with the following parameters and select

.




15. Now click on the following face.

16. Click on the Hole icon and create an other V-bottom hole with the following parameters and select




You get:

Now we are going to create two other V-bottom holes.




17. Select the following face:

18. Click on the Hole icon and create a hole with the following parameters:




19. Use the Positioning Sketch icon to constrain the center of the hole


21. Create the second hole perpendicular to the first one with the following parameters:




You get:

22. Create another V-bottom hole.




You get:

Now we are going to create the following holes.





24. Click on the Hole icon and enter the following parameters in the dialog box.




25. Click on Normal to surface and select the following edge (parallel to the XY plane).

26. Click on Positioning Sketch to move the hole and enter the parameters:

27. Leave the Sketcher by selecting the Exit icon . The second hole is on the same face. It has a length of 82mm and it is parallel to the hole created before.




You get:

Now we are going to create another hole.

28. Select the following face




29. Create a hole and move it to the following coordinates

You get:




Now we are going to create the last hole of the support.

30. Select the following face:

31. Create the hole with the following parameters:




You get:




Creating Grooves In this session, we are going to build grooves. They are built with a closed profile and a rotation axis.

1. Activate the Sketcher icon , select the XZ plane and draw the profile with the following caracteristics.





3. Now activate the Groove icon .

You get:




Now we are going to create another groove.

4. Activate the Sketcher icon , select the XZ plane and draw the profile with the following caracteristics.


6. Now activate the Groove icon .

You get:




Creating a Chamfer. In this session, we are going to create a chamfer.

7. Select the edge to be chamfered:




8. Click on the Chamfer icon and enter the following parameters into the Chamfer Definition

dialog box and select .

You get:




Creating Pockets. In this session, we are going to build two pockets.

1. Activate the Sketcher icon , select the top face and draw the profile as follows.





3. Click on the Pocket icon and write the following parameters into the Pocket Definition dialog box.

You get:




We are going to create another pocket.

4. Activate the Sketcher icon , select the bottom face and draw the profile with the following caracteristics.





6. Click on the Pocket icon and enter the following parameters into the Pocket Definition

dialog boxthen select .

You get:

Creating Edge Fillets. In this session, we are going to create a fillet using the Keep Edge option.




1. Select the edge you want to be filleted.

2. Click on the Fillet icon and enter 3 as the radius, then select and select the

purple edge as the edge to be kept. Select .




You get:

You can save the Part.

Side Toolhead We will design this Side Toolhead to practice the various ways of using both the Sketcher and Part Design workbenches for designing parts.




Once CATIA is running, activate the Part Design Workbench by clicking on the New icon

and select Part

in the New dialog box. Click to validate.






Creating Profiles, Pads and Draft Angles In this section, we are going to build the main pad.

Activate the Sketcher icon , then select the XY plane. Draw the profile with the following parameters:




Leave the Sketcher by selecting the Exit icon .

Now, activate the Pad icon . Using the previously created sketch, build a pad with the following parameters (do not forget to select


Activate the Draft icon and enter the following parameters in the Draft Definition dialog box:




You get:

Creating Pockets and Draft Angles In this session we are going to build two drafted pockets.




Activate the Sketcher icon , then select the following face.

Draw the profile with the following caracteristics:




Add four corners (R=2) to get the following profile:





Now activate the Pocket icon and enter the following characteristics in the Pocket Definition dialog box.

You get:

Use the same method for the other pocket with the following parameters:




Leave the sketcher and activate the Pocket icon as shown below and enter the following parameters:




You get:

Now activate the Draft icon and select the following faces:




You get:

Creating Profiles, Pads and Draft Angles In this session, we are going to build a drafted pad.




Activate the Sketcher icon , then select the XY plane. Draw the profile with the following parameters:





Now, activate the Pad icon . Using the previously created sketch, build a pad with the following parameters (do not forget to select


You get:

Activate the Draft icon and enter the following parameters in the Draft Definition dialog box:




You get:

Creating Holes In this session we are going to create a counterbored hole and a simple hole and three countersunk holes.




Now we are going to create the counterbored hole

Select the following face.




Click on the Hole icon and enter the following parameters:




Click on Positioning Sketch icon to move and constrain the hole. Then select the two following elements.

Click on the Constraints Defined in Dialogue Box icon and select Concentricity. Click to validate




Leave the Sketcher by selecting the Exit icon . You get:

Now we are going to create the three countersunk holes.




Select the following face:

Click on the Hole icon and enter the following parameters:




Click on the Positioning Sketch icon to move and constrain the hole with the following parameters:





Create the opposite side hole with exactly the same parameters. You get:




Create the following hole:


Click on the Hole icon and keep the entered parameters into the Hole Definition dialog box. In the Hole Definition dialog box, click on Normal to Surface and select the following edge:




Then click on the Positioned Sketch icon to move and constrain the hole with the following parameters:





Now we are going to create the simple hole.





Click on the Hole icon and enter the following parameters in Hole Definition dialog box:

Click on Normal to Surface and select the following edge:




Click on the Positioning Sketch icon to move and constrain the hole.





Creating Pockets In this session we are going to create the following pocket:

Activate the Sketcher icon , then select the following face:




Draw the following profile and constrain it:


Now activate the Pocket icon and enter the following parameters in the Pocket Definiton dialog box.




Click on the More icon

Click on Normal to Sketch and select the following edge:

Click to validate. You get:




Creating Fillets In this session we are going to create the following edge fillets

Select the following edges:




Click on the Fillet icon and enter the following parameters:





Now select the following edge:






Now click on the following edge inside the pockets




Creating Chamfers In this session we are going to create a chamfer.

Select the following edge:




Click on the Chamfer icon and enter the following parameters:





You can save the part.

Tee Fitting We will design this tee fitting screw to practice the various ways of using both the Sketcher and Part Design workbenches for designing parts.

Once CATIA is running, activate the Part Design Workbench if necessary (Through the Start menu).






Creating Pads In this section, we are going to build four simple pads corresponding to a quarter of the Tee Fitting.




We are going to build this pad:

Then this one:

Then this one:




And finally this one:


2. Activate the Rectangle icon and using the grid, create the following rectangle:





4. Now, activate the Pad icon , then create a pad with the following parameters:

5. Activate the Sketcher icon , then select the following face:

6. Using the grid, build the following lines:




10. Using the grid, build the following lines:







14. Using the grid, build the following profile:




15. Add the following corners:

16. Using the grid, create the following strait line:




17. Activate the Trim icon and trim the corners with the strait line in order to get:




18. Delete the two following lines:



You get :




Draft Angles and Fillets In this section, we are going to build the following draft angles (green) and fillets (red):

1. Activate the Draft Angle icon and create a draft angle with the following parameters:




4. Activate the Edge Fillet icon and create a fillet on the edge with the following parameters:

5. Activate the Edge Fillet icon and create a fillet on the three edges with the following parameters:





You get :




Holes Creation In this section, we are going to build the two following holes:

1. Activate the Hole icon then select the following face:




2. Enter the following parameters in the dialog box (Extension tab):

3. Enter the following parameters in the dialog box (Type tab):




4. Select the Extension tab then activate the Positioning Sketch icon from the dialog box.

5. Using the Ctrl key, select the edge and the point as shown below.




6. Activate the Constraints Defined in dialog Box icon

7. Select the Concentricity option from the dialog box then select OK.





9. Activate the Hole icon then select the following face:

10. Enter the following parameters in the dialog box (Extension tab):




11. Enter the following parameters in the dialog box (Type tab):

12. Select the Extension tab then activate the Positioning Sketch icon from the dialog box.




13. Using the Ctrl key, select the edge and the point as shown below.

14. Activate the Constraints Defined in dialog Box icon

15. Select the Concentricity option from the dialog box then select OK.





Mirroring In this section we are going to mirror the part in order to get:




1. Activate the Mirror icon , then select the following face:


You get:




3. Activate the Mirror icon , then select the following face:


You get:




Mold Core: Shaft Creation In this section, we are going to build the inside of the tee fitting. To do it, we are going to create a body in which we are going to build a solid corresponding to the material to be removed from the main part then we will physically remove this body to the part body to get the final result.

1. First of all, we need to insert a new Body. To do it, select the Insert + Body function. The

inserted body becomes automatically the working object.




The tree becomes:




2. To better see the core creation, we are going to put the part body in the No Show. Activate the

Hide/Show icon then select the PartBody. Now, we are going to build the following shaft:




3. Activate the Sketcher icon , then select the ZX plane.

4. Using the grid, create and constrain the following profile:

5. Because we are building a shaft, we need to create an axis. So, activate the Axis icon , then using the grid, cearthe the following axis:


7. Now, activate the Shaft icon then select the previously created sketch.

8. Enter the following parameters in the dialog box, then select OK.




You get:

Mold Core: Filleting In this section, we are going to create the following fillets:

1. Activate the Edge Fillet icon and create a fillet on the two edges with the following parameters:

You get:




Mold Core: Shaft Creation In this section we are going to build the following shaft:

1. Activate the Sketcher icon , then select the ZX plane.

2. Using the grid, create the following profile:




3. Because we are building a shaft, we need to create an axis. So, activate the Axis icon , then using the grid, cearthe the following axis:


5. Now, activate the Shaft icon then select the previously created sketch.

6. Enter the following parameters in the dialog box, then select OK.




You get:

Mold Core: Filleting In this section, we are going to create the following fillets:





You get:

Removing Body In this section, we are going to remove the core from the main part.

1. We are going to put the part body in the Show. Activate the Hide/Show icon then select the PartBody from the tree.




2. Place the cursor on the body containing the core (in the tree), then select the Body.2 object +

Remove function from the contextual menu (MB3).

You get:




You can save the Tee Fitting.

Meat Mincer Screw We will design this meat mincer screw to practice the various ways of using both the Sketcher and Part Design and Wireframe and Surface workbenches for designing parts.

Once CATIA is running, activate the Wireframe and Surface Workbench (Through the Start menu).






Creating Profiles and Helixes In this section, we are going to build all the necessary lines for the meat mincer screw. The first element will be a sketch representing the section of the screw:




Then a strait line that will be the axis of the helixes.

Then, we are going to make a point at each sharp corner of the sketch (twelve points).

Then we are going to make twelve tapped helixes starting by the twelve points.




Then, on a new plane, we are going to sketch a twelve point profile, then we are going to make each corner of the profile coincident with each helix extremity.

Now, let us do it !


2. Activate the Profile icon and using the grid, create the following profile:





4. Now, activate the Line icon , then select the Point-Point option from the Line type combo in the dialog box.

5. In order to create the first point of the line, place the cursor on the Point 1 field then select the

Create Point command from the contextual menu (Using the third mouse button).

6. A new dialog box appears in which you will be able to define a point. Select the Coordinates

option from the Point type combo in the dialog box.




7. As the point coordinates enter X=0, Y=0 and Z=0 in the X=, Y= and Z= fields, then select OK.

8. In order to create the second point of the line, place the cursor on the Point 2 field then select the Create Point command from the contextual menu (Using the third mouse button).

9. A new dialog box appears in which you will be able to define a point. Select the Coordinates

option from the Point type combo in the dialog box.

10. As the point coordinates enter X=0, Y=0 and Z=200 in the X=, Y= and Z= fields, then select OK.

11. The two necessary points for the line are now created, select OK from the Line dialog box to validate the line creation.




You get:

12. Now, we are going to create a point at each sharp corner of the sketch (twelve points). To do it,

activate the Point icon , then select the previously created sketch. Automatically, the point type option is turned to On curve.

13. Place the cursor on one of the sharp corner of the sketch, and when you see a red dotted circle

surrounding the cursor (This means that the sharp corner has been detected), click on the first mouse button.




14. In order to validate the point creation; select OK in the dialog box.

15. The point is now created. Using the same method, create the eleven other points at each sharp corner of the sketch.

You get:

16. Now, let us create a tapped helix. Activate the Helix icon (access it by selecting the small

arrow in the Spline icon ).

17. Select one of the previously created points as the helix starting point.

18. Select the Axis field in the dialog box. Select the following line.




19. Enter the following parameters in the dialog box, and then select OK.

You get:




20. The helix is now created. Using the same method, create the eleven other helixes at each sharp

corner of the sketch. You get:

21. Now, we are going to sketch a twelve points profile on a plane parallel to the XY plane and

passing through the top point of the axis of the helixes. We need first, to create this plane. Activate

the Plane icon .

22. Select the XY plane.




23. Select the top point of the axis of the helixes, then select OK.

You get:




24. Activate the Sketcher icon , then select the previously created plane.

25. Activate the Profile icon and using the grid, created the following profile:




26. Using the contextual menu, delete all the constraints.




27. With the Ctrl key held down, select the two following points.




28. Activate the Constraint Defined in Dialog Box icon .

29. Activate the Coincidence option in the dialog box, and then select OK.

You get:




30. Using the same method, create eleven other coincidences between each helix extremity and each

sharp corner of the profile. You get:




31. Leave the Sketcher by selecting the Exit icon . All the necessary lines for the screw are created. We can now create a solid part.

Creating a Loft In this section, we are going to build a solid loft between the two sketches using the helixes as guide lines.

1. Activate the Part Design workbench (Through the Start menu).




2. Activate the Loft icon .

3. Select the small sketch then the large one.

4. If necessary, modify the closing points and the orientations of the sections in order to get them in

the same direction and with their closing points aligned.

5. Select the Guide field.

6. Select one by one all the helixes, then select OK.




You get:

Creating Tri-Tangent Fillets In this section we are going to create the following tri-tangent fillets:




1. Activate the Tri-Tangent Fillet icon (access it by selecting the small arrow in the Edge Fillet

icon ).

2. Select the two following faces of one of the thread.

3. Select the face to be removed, then select OK.




You get:

4. Using the same method, create three other tri-tangent fillets on the three other threads. You get:




Creating Variable Radius Fillets In this section we are going to create the following variable radius fillets:

1. With the Ctrl key held down select the following four edges (the bottom of each thread):




2. Activate the Variable Radius Fillet icon (access it by selecting the small arrow in the Tri-

Tangent Fillet icon ).

3. Double click on one of the radius dimensions located on the smaller side of the cone and in the appearing dialog box, enter 10 as the new radius then select OK.

4. Using the same method, change the three other radii from 5 to 10 on the smaller side of the cone.




5. Using the same method, change the four other radii from 5 to 15 on the bigger side of the cone

then select OK in the main dialog box.

You get:




Creating a Pad In this section we are going to create the following pad:


2. Activate the Hexagon icon (access it by selecting the small arrow in the Rectangle

icon ).

3. Select origin of the sketcher




4. Using the grid, select the following point:

You get:






7. Using the previously created sketch, build a pad with the following parameters (do not forget to select OK to validate the pad creation):




You get:

Creating a Groove In this section we are going to build the following chamfer using the groove function:




1. Activate the Sketcher icon , then select the YZ plane.

2. Activate the Profile icon and using the grid, create the following profile:

If some contraints appear after the profile creation, delete them.

3. Now, we are going to add constraints between the screw and the profile. So, with the Ctrl key held down, select the top face of the screw then the following edge of the profile.




4. Activate the Constraints Defined in Dialog Box icon .

5. Select the Coincidence option.

6. Select OK to validate the coincidence creation.

7. Using the same method, create a coincidence constraint between the two following edges.




8. Now, we are going to create an angular constraint, so, activate the Constraint icon .

9. Select the following edge:





11. Click at the position you want to get the angular constraint.

12. In order to modify the angular value, double click on the angular dimension. You will get the

following dialog box:




13. Enter 60 in the value field then select OK.

14. Now, we are going to create a linear constraint, so, activate the Constraint icon .

15. Select the following point of the profile:




16. Select the following edge on the screw:

17. Click at the position you want to get the constraint.




18. In order to modify the dimension value, double click on the dimension. You will get the following

dialog box:

19. Enter 46 in the value field then select OK.




20. To create a groove, we need to create an axis, so activate the Axis icon .

21. Using the grid, create the following axis:





23. Now, let us build the groove, so activate the Groove icon and, if necessary, select the previously created sketch.

24. Enter the following parameters for the groove, then select OK.




You get:

Creating a Pad In this section, we are going to create the following pad:





2. Activate the Circle icon .

3. As the center of the circle, select the origin

4. Using the grid, select the following point to define the radius of the circle.






7. Using the previously created sketch, build a pad with the following parameters (do not forget to select OK to validate the pad creation):

You get:

Creating a Hole In this section, we are going to create the following threaded hole:




1. Activate the Hole icon .

2. Select the following face (Because the face is circular, the hole will be centered on the face):

3. Enter the following parameters in the dialog box, then select the Threaded button then the

Specification button.




4. Enter the following parameters in the Thread Definition dialog box then select OK.

5. Select OK in the Hole Definition dialog box. You get:




Creating a Chamfer In this section, we are going to create the following chamfer:

1. Activate the Chamfer icon .


3. Enter the following parameters in the Chamfer Definition dialog box, then select OK.

You get :




4. You can save the Meat Mincer Screw.

Pedal Support We will design this pedal support to practice the various ways of using both the Sketcher and Part Design workbenches for designing parts.




The pedal support will be created directly in an already existing assembly. Once the assembly already containing a toothing and an empty part representing the pedal support has been loaded, expand the tree as shown below and double click on the PartBody in order to activate the Part DESIGN workbench.




Rib Creation In this section, we are going to build the first rib of the pedal support.




1. On the ZX plane, sketch the following rectangle with the following dimensions.

2. On the YZ plane, sketch the following profile with the following dimensions.

3. Now, activate the Rib icon , and then select the rectangle as the Profile for the rib.




4. Now, select the last sketch as the Center curve for the rib.





You get:

Circular Pattern In this section, we are going to duplicate the rib using the Circular Pattern command.

1. Activate the Circular Pattern icon , and then select the previously created rib. As the Reference Element, select the XY plane. Enter the following parameters in the Circular Pattern dialog box.




2. Select OK in the dialog box. You get:

Tri-Tangent Fillets In this section, we are going to create the three following tri-tangent fillets.

1. Select the Tri-Tangent Fillet icon , and then select the two following faces.




2. As the Face to remove, select the following face (The red one).


You get:




4. Repeat the same operations on the two other branch extremities in order to get the following

result.

Filleting In this section, we are going to create the following fillets.




1. Activate the Edge Fillet icon , and then select the following edges.

2. As the Radius, enter 10 in the dialog box, and then select OK.




You get:






You get:

5. Activate the Edge Fillet icon , and then select the following edge.





You get:

Rib Creation In this section, we are going to build the second rib of the pedal support.

1. On the XZ plane, sketch the following rectangle with the following dimensions.




2. On the YZ plane, sketch the following rectangle with the following dimensions.

3. Now, activate the Rib icon , and then select the rectangle as the Profile for the rib.

4. Now, select the last sketch as the Center curve for the rib.





You get:






You get:

Pad Creation In this section, we are going to create the following Pad.




1. Activate the Sketcher icon , and then, select the following face.

2. Create a circle with the following dimensions.




3. Select the Exit icon .

4. Activate the Pad icon , then, select the circle.




5. Enter the following parameters in the pad dialog box, then, select OK.

You get:





2. As the Radius, enter 8 in the dialog box, then, select OK.

You get:





You get:




Hole Creation In this section, we are going to create the following hole.




1. Activate the Hole icon , then, select the following edge.




3. Enter the following parameters in the Hole dialog box, then, select OK.




You get:




Circular Pattern In this section, we are going to duplicate the hole using the Circular Pattern command.

1. Activate the Circular Pattern icon , and then select the previously created hole. As the Reference Element, select the XY plane. Enter the following parameters in the Circular Pattern dialog box.




2. Select OK in the dialog box. You get:

Threaded Hole Creation In this section, we are going to create the following threaded hole.




1. Activate the Hole icon , then, select the following edge.


3. Enter the following parameters in the Hole dialog box, then, select OK.




You get:

Assembling the Crank Set In this section, we are going to insert constraints between the toothing and the pedal support.




1. In order to activate the Assembly Design workbench.




2. Select the Coincidence Constraint icon .

3. By moving the mouse over the following hole, display its axis then, select it.

4. By moving the mouse over the following hole, display its axis then, select it.




5. If necessary, select the Update All icon . You get:

6. Repeat these operations between the two following holes.

You get:




7. Select the Contact Constraint icon .





10. If necessary, select the Update All icon . You get:




You can save the assembly.

catia v5 exercicios part design nv

Documents