Week 8 - Challenge 6 - Core & Cavity Design
AIM :
To create the Core and cavity blocks for the Switch Bezel Component.
OBJECTIVE :
To Create Core, Cavity and Parting surface for the given component along the Tooling Axis.
CORE :
- 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.
- Core is the male part which forms the internal shape of molding.
- Cores are often used to create hollow sections or cavities in a casting.
CAVITY :
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 external shape of molding.
PARTING SURFACE & PARTING LINE :
- A Parting surface is a surface in the model that you designate to split a workpiece, die block, or another volume.
- 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 discrepencies 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 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 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 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 component to form the Core part.
- The Core was closed at the top using Fill command and was further joined using Join command.
Creating Cavity:
- The Rectangular extrude was usde to create the cavity aswell.
- This extrude was Trimmed with the Class B to form the Cavity part.
- The Cavity was closed at the top using Fill command and was further joined using Join command.
Creating 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 degree.
Feature tree:
CONCLUSION:
Created the Core and cavity blocks for the switch bezel designed in the earlier challenge.