Week 9 - Attachment Feature Creation - Challenge 2

DOG HOUSE:

Dog house is an engineering feature used in plastic trim design.
Dog houses are used as supporting feature.
Sometimes other engineering features like snaps; locators etc. are mounded on them to increase their strength.
Dog houses are subjected to draft analysis to prevent breakage of the component during ejection from mould cavity.
Dog house and other engineering components are built on B-surface

Tooling Axis :

The direction in which the mold called the tooling axisor core and cavity opens is Tooling axis
Considering the ejection from the cavity of the mold after manufactering the interior trim must have the nominal 3 degree draft angle. Hence the tooling axis is crested by considering this factor
The white clour line is the tooling axis of this surface

Class A Surafce :

Class surface are the one which will be visible to the customer
It's the exterior of the parts
It has a optimal asthetic shape and high surface quality

Draft Analysis :

This type of analysis is performed based on colour ranges identifying zones on the analysed element where the deviation from the draft direction at any point.
The Green colour denotes the draft angle is in the standards (3 degree).
The Blue colour denoted its is below (3 degree).
The Red colour denotes the surface is not producable.

For class A :

For Part :

For Dog House:

Class B Surface :

Class B is the inner side of the Class a surface which will not be seen by the customer
where it will faced in the side of core
where the ejection will make there contact
It contains the engineering aspects of a model.

Class C Surface :

Surface that joins class-A and class-B surfaces is class-C surface.
Which will determine the thickness.
Class C is often specified for interior surfaces not readily visible.

Conclusion:

The report of “Drill Handle” with Attachment feature Creation (Ribs & Screw Boss), And the project Is Done.

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