3-Pat Design Fundamentals Excercise

7/28/2019 3-Pat Design Fundamentals Excercise

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CATIA TrainingExercises

Part DesignFundamentals


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Table of Contents

1. Lever: Building the Main Pad p.3

2. Lever: Finishing the Part p.5

3. Connector Housing Presentation p.74. Connector Housing (1): Creating Features p.10

5. Connector Housing (2): Dressing-up the Connector p.12

6. Connector Housing (3): Modifying the Part p.14


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Exercise

Lever: Building the Main Pad

In this exercise you will:

Practice the various Sketcher tools and Sketch-based features to continue the Lever

30 min.


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Do It Yourself

Create the lever using the provided profile

Thickness = 5mm

Load: CATPDG_EX_Lever1.CATPart


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Exercise

Lever: Finishing the Part

In this exercise you will:

Practice the various tools such as Pattern, Draft, Fillet, and Mirror, to finish the Lever

30 min.


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Do It Yourself

Pattern the hole

Add the draft angles (5deg)

Fillet the edges (1mm)Mirror the part

Load: CATPDG_EX_Lever2.CATPart


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Master Exercise

Connector Housing: Presentation

In this exercise you will build a housing connector from scratch following the recommended

design process:

Create and combine features, and modify the part using Sketcher and Part Design tools

70 min.


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Design Intent: Connector Housing

The connector housing is a molded part that is used in an assembly

The part is not symmetrical

The profile of the main pad is sketched on the YZ planeThe catch is centered on the base

Counterbored through holes with same radius

The detent pocket and the clip are equally positioned

Most surfaces are drafted

Fillets radii are constant except for cornersWall thickness is constant

Catch

Detent

Clip

Standoffs

Hole


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Extruding profiles to create main pad

and other features

Filleting, drafting, and

shelling the part

Editing features to

modify the part

Design Process: Connector Housing

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Master Exercise

Connector Housing (1) : Creating Features

In this step you will:

Create the 4 main features making up the connector:

- the main pad

- the Catch

- the Detent Pocket

- the Clip

15 min.


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Create the four features of the connector:

1. Main pad: 70mm long from the connector profile

2. Catch: at 35mm from yz plane, 16mm centered on offset plane3. Detent: 9.5mm long pocket 20mm forward of the back face of the main pad

4. Clip: 3mm long

Main pad

Detent

Detent

Clip

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2

3

4

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2

4

3

Do It Yourself Load: CATPDG_Ex_Connector_Housing_Step1.CATPart


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Exercise

Connector Housing (2): Dressing-up the Connector


Dress-up the Connector by:

- Drafting surfaces

- Filleting edges

- Shelling the part

- Patterning a hole

You will also:

- Add standoffs

30 min.


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Do It Yourself

Dress-up the connector:

Drafts: 3deg

Edge fillets: 1mmCorner variable fillets: top= 1mm, bottom= 2mm

Connector shell (including the clip): 1mm inside thickness

Complement the part:

Hole: 3.5mm diameter, located at 15mm from right edge and 10mm from

front edge on the upper face

Pattern the second hole: 40mm from the first hole

On the underside of the part: 4mm standoffs

Vertical faces drafts= 3 deg.

Edge fillets= 1mm

Corner fillets: top=1mm / bottom= 2mm

Shell= 1mm inside

thickness

15mm

10mm

Inside Clip

Faces

Right EdgeFront Edge

Hole location

4mm standoffs

Load: CATPDG_Ex_Connector_Housing_Step2.CATPart


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Master Exercise

Connector Housing (3): Modifying the Part


Modify the connector by:

- Editing feature parameters

- Editing a sketch

- Editing fillets

- Changing the hole type

- Editing feature properties

30 min.


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Do It Yourself

Modify the following features so that:

Main pad: width = 40mm

Standoffs: include two tangent lines, perpendicular to each other withconstraints

Step fillets: radius from 1mm to 1.5mm

Holes: Counterbored (5mm diameter and 1.5mm depth for the counterbore)

Catch (Pad.2) color: red

Counterbored

hole

40mm width pad

1.5mm

fillets

Red catchstandoffs

Load: CATPDG_Ex_Connector_Housing_Step3.CATPart

3-Pat Design Fundamentals Excercise

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