Week 8 - Challenge 4 - Coin Holder Design

Coin Holder Design

Aim:- To Create the Coin Holder Plastic component through the given Class-A surface. To begin with, the tooling axis for the given Class-A Surface should be created meeting the requirements of the draft angle and at the end perform the Draft analysis on the model.

INTRODUCTION

The Draft Analysis command enables you to detect if the part you drafted will be easily removed. This type of analysis is performed based on colour ranges identifying zones on the analyzed element where the deviation from the draft direction at any point, corresponds to specified values.

Tooling direction is the main consideration for plastic part and mould parts because it defines the movement of the mould part and the possibility of the plastic part coming out from the mould part (Core and Cavity).

TOOLING DIRECTION

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.

PROCEDURE FOR CREATING TOOLING AXIS

Firstly import the given class A surface to the catia.

• Check For any defects in the surface such as boundries and estimate the possible tooling direction

Here, the input given was not a single surface. so, join the surfaces to create Class A surface

In the given surface the side walls are vertical without any draft to it. So, tooling axis is created in vertical direction along the base

Draft Analysis

Using the feature draft analysis, perform draft analysis on the surface considering the tooling axis

3 degrees draft is optimum for the plastic moulding component

As there was no draft given to side walls, mention the Class A designer to provide some draft angle for manufacturing feasibility.

Creating B surface

To create the B surface offset the parts of class A surface without fillets

Side walls

Base

Top wall

Initial trim

Top flange

Final B surface

Creating C surface

To create C surface Create sweep with reference to the surface

Final Coin holder surface

Create a solid from the surface using the feature "closed surface"

Performing draft analysis on the part body