Challenge

Week 8 - Challenge 6 - Core & Cavity Design

CORE AND CAVITY DESIGN

Objective :

To Create a Core, Cavity, and Parting surface for the given component along the Tooling Axis.

Core :

The core is a preformed, bonded, sand insert placed into the mold to shape the interior of a casting or a part of the casting that cannot be shaped by the pattern.
The core is the male part which forms the internal shape of the molding.
Cores are often used to create hollow sections or cavities in a casting.

Cavity :

The cavity is the combined open area of the molding material and core, where the metal is poured to produce the casting.
The cavity is the female part which forms the external shape of the molding.

Parting Surface :

A Parting surface is a surface in the model that you designate to split a workpiece, die block, or another volume.

Parting Line :

A Parting line is the line of separation on the plastic part where the two halves of the plastic injection mold meet.

Procedure :

Creating Tooling Axis:

Initially, the given Class-A surface was imported and checked for any discrepancies in the boundary.
The base surface of the component was extracted.
Two sketches were created based on the adjacent sides of the Class A surface.
Finally, a Tooling axis was created from these two reference lines using the bisecting option.

Creating Parting surface & Parting line:

Initially, the Class A surface was extrapolated.
It was then Trimmed with the Class C surface.
This output was further trimmed with a Class B surface along with the component.
The Parting line was created as an Intersect with Class B with a Trimmed surface.
The Parting surface was obtained by Splitting the Parting surface with the component with the Parting line.

Creating Core:

A Rectangular shape was formed and extruded along the tooling axis such that it stays inside the region of the Parting surface.
This extrude was Trimmed with the Parting surface with components to form the Core part.
The Core was closed at the top using the Fill command and was further joined using the Join command.

Creating Cavity:

The Rectangular extrude was used to create the cavity as well.
This extrude was Trimmed with Class B to form the Cavity part.
The Cavity was closed at the top using the Fill command and was further joined using the Join command.

Creating a Solid Body:

The Core and Cavity were made into a solid component using the Close surface feature.
The Tooling axis, Core, Cavity, Parting surface, and Parting line were published.

Draft Analysis:

The Drafting analysis was performed using the Feature Draft Analysis command.
Using this command the compass was set on the main tooling axis and the Draft angle was changed to 2.9 degrees.

Conclusion:

Created the Core and cavity blocks for the switch bezel designed in the earlier Challenge.

Ship work like this
in your own course.