Week 8 - Challenge 4 - Coin Holder Design

AIM:

To create the Coin Holder Plastic component through the given Class-A surface and add the thickness and perform the draft analysis on a solid surface.

OBJECTIVE:

The objective of the challenge is to create a Coin Holder Design along the solid part body from class A surface in CATIA surface workbench and part design.

• To create a class B & C surface for the given component.
• To form a tooling axis.
• To perform a draft analysis.

1. INPUT CLASS A SURFACE:

Check for any boundary opening therein given Class-A surface using the Boundary command.

2. TOOLING AXIS CREATION:

The Tooling Direction is basically the direction that the mold pulls apart. The mold is built in two separate pieces, basically. You have a Cavity side and you have the Core side. The Core pulls apart from the Cavity and that's the Dyeline or the Tooling Direction.

• analyzing the model visually to see the most efficient side suitable for the tooling axis from the image below image.
• Extrude the surface to create a point and temporary axis.

3. DRAFT ANALYSIS ON THE CLASS-A SURFACE:

• First, change the parameter to material mode and then go to perform draft analysis Go to Insert > analysis > feature draft analysis.
• Click on the compass icon & align with the tooling axis.

• from the above image, we see the surface in green color has more than a 3degree draft which is required for tooling feasibility.

4. CLASS-B SURFACE:

We subdivided the class-A surface by

1. Sidewalls
2. Base
3. Top walls
4. Outer Flange

1. Sidewalls:

• we take the extract of the side walls from the class A surface.
• Surface Untrim the extracted walls.
• Extrapolate the walls by some distance.
• Trim the side walls to combine single walls.
• Offset the wall by 2.5mm by outside as shown below image.
• Given the radius value of the sharp edges of corners by Class-A surface radius + 2.5 mm.

2. Base:

• we take the extract of the Base from the class A surface.
• Surface Untrim the extracted walls.
• Extrapolate the walls by some distance.
• Trim the side walls to combine single walls.

3. Top walls:

• Extract the top wall surrounding the class-A surface.
• extrapolate the surface by both sides offset the top walls by 2.5mm

Trim the sidewalls, base, and top walls

4. Outer Flange:

• we take the extract of the outer walls from the class A surface.
• Surface Untrim the extracted walls.
• Extrapolate the walls by some distance.
• Trim the side walls to combine single walls.
• Finally Class-B surface formed.

5. CLASS-C SURFACE:

The surface will be created using the sweep command by sweeping the boundary of Class-A surface along the tooling axis along the A-B surface is known as CLASS-C surface.

after creating a Class-C surface using the B and C surface created a closed surface will be formed by using trim commend.

• After creating the closed surface go to the part workbench to form a solid part from the closed surface using close surface commend.

6. DRAFT ANALYSIS ON SOLID PART BODY:

• After creating the solid body again I will perform the draft analysis but this time the whole part body.
• I follow the same process I do on the class-A surface.
• First, change the parameter to material mode and then go to perform draft analysis Go to Insert > analysis > feature draft analysis.
• Click on the compass icon & align with the tooling axis.

• from the above image, we see the surface in green color has more than a 3-degree draft which is required for tooling feasibility.
• The below image is analyzed under the running point to see the angle of the surface.

various orientations (Isometric, Front, Side, and Top View)