Smetal Cat

7/29/2019 Smetal Cat

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Copyright DASSAULT SYSTEMES 2001 1

CATIA TrainingExercises

Version 5 Release 6

February 2001FOR-CAT-E-SMD-FX-V5R6


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In this exercise you will:

Assign Material Parameters

Create Walls; Profile, Edge and Extrude

Create Bends; Auto/Regular and Flange and Hem

Add Cut Outs, Pattern, use Flat Mode and 3D Features

Create 2D Flat Pattern drawing

Modify; Standard Bend Radii, Wall sizes, Cut Outs,

Flanges and Features 70 min

Control Bracket Exercise


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1. The part is not symmetrical2. The first wall is a profile3. The Bends are common throughout the part4. Some Flanges are used in the part5. Some walls are equal in length and can be extruded from a profile6. Holes whether they are round or a specific profile are done with wall cuts7. Speciality features such as extruded hole and strengthening ribs are used

8. All walls, bends and features can be modified9. A 2D flat view can be created for the part

Design Intent of the exercise

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1.Assign Material Parameters

2. Create Walls, Profile, fromedge and extruded from

sketch

3. Add Auto Bends andHem Bends

4. Add Wallcuts and3D Features and

Pattern them

Bracket design process...

Design process solution of the exercise

5. Create 2D FlatViews on Drawings

6. Modify Walls andBend Radius


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1.Assign Material Parameters


And now practice in the context of the Control Bracket ...


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Defining the Parameters for the Control Bracket

10 min

Control Bracket step 1


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Do it yourself

Load the Catia document CATSMDEXControl-Brkt_step1.CATPart

Create Parameters for control bracket:

. Use 1 mm for thickness, 1 mm for Bend Radius and Square Relief


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2. Create Walls, Profile, fromedge and extruded from

sketch


Step1



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Defining the walls of the Control Bracket

15 min



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Do it yourself


Back walls

Right wall

Left wall

Bottom wall

Define the walls of the Control Bracket:

. Back walls: 9 mm length

. Right walls to be 8 mm length

Material side


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3. Add Auto Bends andHem Bends


Step 1

Step 2



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Defining the Bends and Flanges of the Control Bracket

10 min



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Do it yourself


Create bends and flanges for control bracket:

. Use standard Bend Radii except where indicated

. Use 1 mm radius, and 5 mm length and 90 degree angle for the front Flange

. Use 0.5 mm radius and 7 mm length for the Hem Bend

2 mm Radius this wall only

Flange edges

Hem Bend


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1- Select Bend icon and change radii to 2mm and create bend onwall indicated on back of part

2- Select the Automatic Bend icon and create bends for otherwalls.

3- Select the Flange icon and then the 3 front edges indicated.Key in 1 mm radius, 5 mm length and 90 degree angle.

4- Select the Hem icon and the edge indicated. Key in 0.5 radiusand 7 mm length

2 mm Radius this wall only

Flange edges

Hem Bend

Do it yourself (More Detailed)


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4. Add Wallcuts and3D Features and

Pattern them


Step 1

Step 2

Step 3



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Defining Cut Outs, Patterning them and adding 3D Features to theControl Bracket

10 min



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Do it yourself


Create Cut Outs, Patterns and Features for control bracket:

. Use sketches where provide for cut outs

. Holes to be 2 mm diameter on 4 mm horizontal spacing and 3 mm vertical spacing

. Cut out in the flat to be centered and be 4 mm from edge of part and be 10 mm long by 2mm wide

. Stiffening Rib located in center of center flange with R1 and R2 equal to 1 mm and angleequal to 80 degrees and 10 mm long

. Extruded hole to be 3 mm diameter, 4 mm deep with a 0.5 mm Radius and 85 degreeangle, centered in wall

Center Flange

Edge to locate flatcut out from


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1- Using Sketch.21 create a simple hole Up to Next

2- Select Sketch.15 create a more complex cut out using Up to Next

3- Pattern hole created in step 1 with 5 instances, 4 mm apart horizontal and 2instances 3 mm apart vertical

4- Go to Flat mode and create rectangular cut out 2 mm wide by 10 mm long 4mm from main body of part, wall indicated above. Re-fold part.

5- Create Stiffener Rib in center of Back center flange. R1 and R2 should be 1 mmradius, the angel should be 80 degrees and the length should be 10 mm

6- Create an extruded hole with a 3 mm diameter 4 mm deep with 0.5 radii.



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5. Create 2D FlatViews on Drawings

Step 1

Step 2

Step 3

Step 4



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Creating a 2D Flat View of the Control Bracket

10 min



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Do it yourself


Create a 2D Flat View for control bracket:

. Add some dimensions to the flat view

Select thisReference plane


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1- Start a 2D drawing and then select the Unfolded View icon

2- Select the reference plane indicated above.

3- Now click anywhere on the drawing to create the 2D Flat View.

4- Add some dimensions

Select thisReference plane



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Step 5

Step 1

Step 2

Step 3

Step 4


6. Modify Walls andBend Radius


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Modifying various features of the part, Wall Size, Bend Radii,Flange size, Cut Outs, and 3D Features

20 min



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Do it yourself


Modify the following list of items as indicated:

. Modify the general bend radius to .5 mm

. Modify the Flange height and Hem Bend to 3 mm

. Modify the back left wall to 5 mm wide

. Modify the back right wall with corner cut out 3 mm by 5 mm

. Change the length of the tab to be 1 mm shorter then it currently is and add 2 mm by 45degrees chamfers on the end.

. Change saw tooth cut out in bottom to be 7 mm wide and to have 0.25 mm radius oncorner of teeth.

Back Right WallBack Left Wall

Tab


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1- Using Sketch.14 create a simple hole Up to Next

2- Select Sketch.15 create a more complex cut out using Up to Next

3- Pattern hole created in step 1 with 5 instances, 4 mm apart horizontal and 2instances 3 mm apart vertical

4- Go to Flat mode and create rectangular cut out 2 mm wide by 10 mm long 4mm from main body of part, wall indicated above. Re-fold part.

5- Create Stiffener Rib in center of Back center flange. R1 and R2 should be 1 mmradius, the angel should be 80 degrees and the length should be 10 mm

6- Create an extruded hole with a 3 mm diameter 4 mm deep with 0.5 radii.



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Creating some simple walls in the context of an assembly

15 min

Sheet Metal Walls

Recap Exercise


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You are starting in an Assembly and will be creating the Top Cover in the context

of the Assembly

. Create the Top Cover wall using Sketch.1

. Create the back wall extending 7.5 mm downward

. Create two side walls on each side where indicated above 3 mm length

Do it yourself

Load the Catia document CATSMDEXSimple_Wall_start.CATProduct

Extrude top wall upfrom these flanges

Back Walll

Side Walls


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1- Select Sketch.1 and the Wall icon. Make sure material arrowpoints upward.

2- Select the Wall on Edge icon and then then create the backwall making it 7.5 mm long.

3- Select the inside surface of the side wall and go to the

sketcher and sketch the first side wall between the twoflanges. Use sketch to create a profile wall extruded inward tothe part

4- Select the same surface again and sketch between flange andthe back relief on the new cover. Again create a profile wall

extruded inward.

5- Repeat the process on the other side of the part.

Extrude top wall upfrom these flanges

Back Wall

Side Walls



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Adding Bends to the walls already created and adding someFlanges

15 min

Sheet Metal Bends and FlangesRecap Exercise


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Add Bends to the walls created lesson 2 and then add a hem bend to the back

wall and an S-Bend to the front edge of the cover:

The Hem bend should 5 mm long and a radius of .1 mm on the inside of the

back wall.

Use Sketch.7 for the S-Bend (Swept Flange)

Do it yourself

Load the Catia document CATSMDEXBends_start.CATProduct

Front Edge

Back Wall



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1- Use the Regular Bend icon and create a bend between wall 1and walls 2 through 6.

2- Select the Hem icon and then the inside edge of the bottom ofthe back wall and key in .1 mm radius and 5 mm length.

3- Select the Swept Flange icon and then the bottom front edgeof the cover for the spine. Select Sketch.7 for the profile.

Front Edge

Back Wall



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Adding the mounting holes and a 3D feature with a hole in it.

10 min

Sheet Metal Cut Outs, Flat and FeaturesRecap Exercise


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Using holes from existing part create cover mounting holes and then add 3D

Feature for raised area in part:

Holes to be 3 mm Diameter

Feature to be 2 mm high with 0.5 mm radii and 45 degree angle.

Center hole in feature to be 10 mm diameter

Do it yourself

Load the Catia document CATSMDEXCutouts_Features_start.CATProduct

Hole in each of these 4 flanges

Feature Sketch



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1- Use 4 holes on flanges in base part to make new holesconcentric with. They will be 3 mm in diameter

2- Select the Feature sketch (Sketch.9) and key in 2 mm for theheight, 0.5 mm for the radii and 45 degrees for the angle.

3- Select the surface to the feature and sketch a hole in thecenter of the feature. The Diameter should be 10 mm.

Hole in each of these 4 flanges

Feature Sketch


Documents

Smetal Cat