Challenge

Week 9 - Challenge 1 - Base Bracket Design

AAmit Kumar24 Jul 2023

Objectives:

Creation of Tooling Axis.
Creation of Class B and Class C surface.
Creating a solid part out of surface modelling.
Draft Analysis of Class A surface and final plastic component.

Tool Used used to create model: CATIA V5

Introduction: We are designing a base bracket using given class A surface. The approach includes creation of Class B surface keeping 2.5 mm of thickness in mind for the complete component. The design also included Class C creation from the given parent surface.

CLASS A: Following surface is given as the input for the component creation.

To design the part model we have to find out the tooling axis for the surface and check the drafts using Feature Draft Analysis tool of CATIA.

Draft Analysis of Class A Surface :

The analysis is done for 3degree draft angle. So as can be seen all the surfaces are more than 3deg.

Creating of Tooling Axis:

First we create an intersection of CLASS A surface with referance of YZ plane and from the intersection create the tooling axis as shown below.

Created a bisecting line using the lines shown.
Here, Line shown in dotted yellow line is our tooling axis.

Creation of Class B:

Now for Class B creation, we have extracted surface from Class A and untrimmed them to obtain the original parent surface.
Then offseted to the required thickness(That is 2.5mm).
After offsetting, all the surfaces are trimmed into the required shape.
Required fillets are given to the surfaces.

Creation of Class C:

For creating Class C surface we have extracted the boundry of Class A using multi-extract and then converted to smooth curve.
Now this smooth curve is sweep along the draft direction with a 3deg draft.