Week 8 - Challenge 6 - Core & Cavity Design

AIM:

• To Create the Core and cavity blocks for the switch bezel component.

DESCRIPTION:

  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 them with a maximum tolerance of 0.003 mm.

• Extract the boundary and dissemble the boundary.
• Find the correct tooling axis where the material don't interfere with the tooling axis and all the elements can be created.
• Create an axis system using at the centre of the switch Bezel.

• Intersect the yz plane with respect to the class A surface.
• Hide the class A surface and create point to point lines on the suspected drafts.
• Create bisecting line with the two lines and point to create a tooling axis.
• BISECTING LINES were used to get the exact medium from the two sides so that maximum positive draft angle can be achieved. 

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

  2. PUBLICATION

• Publication is done to the component to make it visible and navigate easily.
• To publish the component go to tools > publications and then select the tooling axis and the class A surface.
• A separate tree structure is formed under the main part.

  3. PARTING SURFACE

• Generally injection mold has two major components : the movable half and the fixed half, during the injecction molding 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.

  4. PARTING LINE

• A parting line is an inevitable part of injection molded products.
• It is the line of separation between where two halves of a mold meet.
• It manifests itself on injection molded 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.

  5. CORE DESIGN

• Core - 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.

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  6. CAVITY 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.

  7. 3D VIEWS

• ISOMETRIV VIEW

        

• FRONT VIEW
• BACK VIEW
• 

        CONCLUSION:

• The Core and cavity blocks for the switch bezel component is created.