Week 8 - Challenge 1 - Base Bracket Design

AIM: Create the Base Bracket 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.

REPORT ON DRAFT ANALYSIS:

Given Class A Surface:

STEP 1:

Check the connectivity of the Class A Surface.Ensure that there is no gap between the component, using join command.
We can visually check it or by clicking boundary command.It has 3 boundaries one outer and two inner circle boundaries.
Therefore first check completed.

STEP 2:

Find the tooling axis of the component. The tooling axis is nothing but the mould opens or cavity opens.
Check viswally which is the best possible tooling axis. Check all three axis.
Along x it possible but expensive and y is not possible. z is the best possible tooling axis due to holes.

Creating a Tooling axis along z:

Bisecting method :

EXPLANATION ON BISECTING METHOD:
Bisecting method is basically use to find the proper tooling axis using the dummy tooling axis. In Bisecting method, bisecting line is used which either bisect the two line or it will show error which means the two lines are parallel to each other. In order to know whether the particular surface is toolable or not we intersect the surface with the respective plane and get a sketch which consist of two lines and with the help of bisecting line option we bisect the line which creates a line at the mid point of the two lines. Like wise we create tooling clearing axis for x and y which will be used to create the main tooling axis using the bisecting line option in in the line comand.

A point was created at the center of the large circle, Using that axis system is inserted,Using the YZ plane an intersection is to be made.

Two lines need to be created from the points-take any two of the incline lines as reference,

Create a bisecting line for the inclination lines,

The tooling axis is the tool movement axis (core/cavity).This axis will decide the draft direction.

Tooling Axis:

Now creating Class B Surface:

Intially extracting the right side rib using extract option from Class A surface.

Then perform Extrapolate inorder to increase the length

Now trim the surfaces to required surfaces

Then Offset the surface inorder to get the required thickness

Similary create the left side rib

Now Similarly get the slanted as well as the flat surface and offset it to desired value

And now trim inorder to get the required surface

Now fillet the surface to required amount

Now Creating Class C Surface:

PART BODY DRAFT ANALYSIS :

CLASS - A SURFACE DRAFT ANALYSIS :