Catia v5 exercicios part design NV 251 trang

TRV5PD Exercicios – Página 13 You get: Creating the Cylindrical Boss In this section, we are going to create the following bosses.. TRV5PD Exercicios – Página 14 You get: Creating Poc

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CATIA

Part Design Exercicios

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CATIA é marca registrada da Dassault Systèmes S A

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TRV5PD (Exercicios) – Página 3

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

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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

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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

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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:

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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

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5 Select the Sketcher icon

6 Select the ZX plane

7 Select the Profile icon

8 Sketch approximately the following profile

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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:

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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:

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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

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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

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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

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

You get:

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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

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You get:

Creating a Through Hole

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

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1 Select the Hole icon

2 Select the following face

3 Create a hole with the following parameters

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

2 Select the four following edges

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You get:

5 Using the same method, create an edge fillet with a radius of 2 at the following location

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You get:

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You get:

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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)

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

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You get:

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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

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

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

We will now create the base pad of the part:

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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

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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

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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)

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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

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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)

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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)

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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

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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.

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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

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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)

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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.

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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:

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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).

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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:

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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 :

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

• Enter the following parameters:

You get:

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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

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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

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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)

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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

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7 Add four corners to get the following profile

8 Leave the Sketcher by selecting the Exit icon

9 Now, activate the Pad icon

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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

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You get:

Creating Edge Fillets

In this session, we are going to build edge fillets

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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

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