Challenge

Week 9 - Attachment Feature Creation - Challenge 2

Attachment Feature Creation - Challenge 2

Aim

Software

CLASS -A Surface

The Class-A surface is the outermost surface of the plastic component which is also looks fine surface and it is the aesthetic surface that the designer creates as an input part for the design work.

Tooling Axis.

In Molding, machine arrangement is given to open the mold along a direction which is known as Tooling Direction. In other words. The mold is built from two separate halves (Core and Cavity) and tooling direction basically defines the direction of mold or core pulls apart.
The tooling axis is created by Bisecting method.
Bisecting method : Using a dummy tooling axis, the bisecting approach is essentially used to identify the correct tooling axis. When using the bisecting method, a line is used to either bisect the two lines or show an error, indicating that the two lines are parallel to one another. In order to determine whether a specific surface is toolable or not, we interest the surface with the appropriate plane to produce a sketch that consist of two lines. Using the bisecting line option, we then divide the two lines, creating a line at the intersection of the two lines.

CLASS -B Surface Creation

The Class-B finish is a quality finish with only minimal imperfections. A Class-B finish is the most common finish for exterior surfaces. It is normally specified on surfaces such as external covers, panels, and parts that are fairly prominent.

CLASS -C Surface Creation

The Class-C finish allows more imperfections than Class-A or Class-B. Class-C is often specified for interior surfaces not readily visible, surfaces that will be covered by another part when assembled, or surfaces which the Customer feels do not need to meet a high cosmetic finish.

Final Surface

The Class-A, Class-B and Class-C surfaces are joined together to form a closed surface.

Dog House Creation

General Guidlines for Dog House:

Doghouse wall thickness at the intersection of the part wall ( C ) should be 40% or less than the main wall stock ( T ).
The height of ( B ) should be between 3.0 – 6.0 mm
Minimum Doghouse Width (X) for doghouses is 12 mm.
Minimum Doghouse Width (X) for doghouses is 12 mm.

Final Plastic Component

Thickness : 2.5mm

The black doted line is the main tooling axis and the white doted line is the side core axis.

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 analysed element where the deviation from the draft direction at any point, corresponds to specified values.
Most parts or applications require minimum of 1/2 to 1 degree, however 3 degrees is widely accepted as the norm.
Draft analysis on Class-A surface.

Conclusion

Thus the Dog House for the Door Trim is created considering the design rules.

Ship work like this
in your own course.