Week 8 - Challenge 5 - Core & Cavity Design

AIM: Create the Core and cavity blocks for the switch bezel designed in the earlier challenge.

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 single boundary.

STEP 2: Find the tooling axis of the component. The tooling axis is nothing but the mould opens or cavity opens.

• Check visaully which is the best possible tooling axis.
• Check all three axis.
• z is the best possible tooling axis.

Creating a Tooling axis along z:

Therefore the main tooling axis is along z axis.

Now perform the Draft analysis using the Featured Draft Analysis tool in the tools.

Then after opening the draft analysis tool box go for the compass and place the compass alinged to tooling axis and click on the lock symbol after alinging and further click on the surface.

Then it will be shown green colored.

Now measure individually.

After completing the plastic component creating the Core Cavity Design.

Creating the Core and Parting Surface by trimming with the A and C with B surface.

Closing the Core part:

Intersections:

Cavity Design.

Creating the Parting Line by Intersecting Class B and trim 9.

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.

Screenshot of the complete Draft analysis:

Class A Surface:

Final Plastic Product:

Screenshots of the core and cavity blocks in various orientations:

ISOMETRIC VIEW:

FRONT VIEW:

SIDE VIEW:

TOP VIEW: