Week 8 - Challenge 6 - Core & Cavity Design

26 - Week 8 - Challenge 6 - Core & Cavity Design

CORE AND CAVITY DESIGN:

1. CREATING TOOLING AXIS -

The Tooling Direction is basically the direction that the mold pulls a part. The mold is built in two separate pieces, basically. You have a Cavity side and you have the Core side. The Core pulls apart from the Cavity and that's the Dye line or the Tooling Direction.

• Open the given CAT part file.
• Check for gaps between surfaces for that click on join and then preview.

If theres any gap between the surfaces join with a maximum tolerance of 0.003 mm.

The tooling axis is created for the component by bisecting two axis from x and y planes:

PARTING SURFACE

• Generally injection mold has two major components: the movable half and the fixed half, during the injection moulding process, these two halves are pressed tightly from a sealed hollow to avoid the melt flow leakage and maintain certain holding pressure, the pressed surface are called parting surface , usually parting surface are the biggest projection outline of the part.

5. PARTING LINE

• A parting line is an inevitable part of injection moulded products.
• It is the line of separation between where two halves of a mold meet.
• It manifests itself on injection moulded parts as a line that runs the entire perimeter of the part.
• In most parts, it is just a line that runs straight down the middle.

6. CAVITY DESIGN

• CAVITY - A portion of the mold that goes inside a cavity to form the interior of a hollow part.

Core-cavity - A term used to describe a mold created by mating A-side and B-side mold halves

7. CORE DESIGN

• A mold is a hollow form typically made from stainless steel that has plastic injected into it to manufacture a plastic part.
• The plastic is inserted into the mold cavity, which is a hole in the mold shaped like the desired part.

• FRONT VIEW