Week 9 - Attachment Feature Creation - Challenge 2

AIM:

• To Create theDoor Trim Component from the given Class-A surface.
• To Create the Tooling axis for the given Class-A Surface meeting the requirements of the draft angle.
• To perform the Draft analysis on the model.
• To Create the B Side Feature in the component by following the design rules.

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.

BISECTING LINES were used to get the exact medium from the two sides so that maximum positive draft angle can be achieved.

2. DRAFT ANALYSIS

The Draft Analysis command enables you to detect if the part you drafted will be easily removed. This type of analysis is performed based on color ranges identifying zones on the analyzed element where the deviation from the draft direction at any point, corresponds to specified values.

3. CREATING CLASS B SURFACE

• Extract the surfaces from the class A using multiple extract and untrim them.
• Use Extrapolate to make sure that all the untrims are properly intersected to trim and offset the surfaces to 2.5 mm to create the thickness.
• Trim the extra surfaces using trim command.
• Insert them into new geometrical set and name it with respective part names.
• Apply fillets to the model after creating the entire surface.
• If the edges are outside the fillet value will be added to the thickness of the component and if the edges are inside, the fillet value will be subtracted from the thickness of the component, for instance the thickness of the component Is 2.5mm the fillet value is 15mm so the outside portion value should be 17.5mm and inner eges should be filleted 12.5mm to get uniform thickness.
• Perform trims one at a time so that it will be clear to understand.
• 

5. CREATING CLASS C SURFACE

• Extract the boundary from the class A surface using boundary command.
• Using disassemble tool to divide the boundary as the boundary contains domains.
• Use sweep command > choose profile type line > subtype as with draft direction > choose guide curve and draft direction > draft angle as 3 degree > preview.
• 

SURFACE A+C:

SURFACE A+B+C:

CLOSED SOLID BODY:

6. B SIDE FEATURES CREATION

DOG HOUSE CREATION

• Design Principle for Dog House Creation

Height of the Dog House - Maxiumum of 55 mm
● Thickness of the Dog House (t) - Same as component wall thickness
● Coring Height (B) - 3 mm to 6 mm
● Coring Thickness (C) - 40% of Wall Thickness of the component
● Thickness of the Component - Given as input
● Length and Breadth of the Dog House can be decided upon the application
● Inner Fillet of Dog House (Thickness t) - 0.5 mm
● Outer Fillet of Dog House (Thicknes t) - t + 0.5 mm
● Inner Fillet of Dog House (Thickness C) - [ t + 0.5 mm] - 40% of Wall Thickness
● Outer Fillet of Dog House (Thicknes C) - t + 0.5 mm
● Fillet for the Corting Face - 0.25 mm (or) 0.3 mm
● Draft Angle for Dog House - 0.5 degree

SIDE CORE AXIS :

DRFAT ANALYSIS:

WITH SIDE CORE: