Week 9 - Attachment Feature Creation - Challenge 2

1. 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.

For the color ranges there are 3 colors presented in a simpler legend called the quick analysis mode. Beginning with Green, Red and Blue colors corresponds to the draft angle range of above 3 degrees, 0 to 3 degrees and below 0 degrees respectively.

The ideal value of the draft angle is set at 3 degrees for main tooling axis whereas for side core it is set at 0.5 degrees and accordingly the component should be representing the green colour all over the surface which indicates the appropriate value.

The draft analysis of the Class A is rather simple with a few steps which includes-

1. Select the 'Customize view parameters' from the view options and select 'Material' in the 'Mesh' column.

2. Click on the draft analysis operation either from the Tools option above or from the 'Analysis' bar from the lower column.

3. Place the axis system from the top right on the tooling axis and select the 'Uses the compass to define the new current draft direction' from the direction option in the draft analysis window.

4. Now select the Class A and set the draft angle within the appropriate range (0 to 3 degrees) and identify the color on the surface as to whether it lies within the range or not with the help of the legend.

There is a part of the surface that signifies the draft angle being lesser than the nominal angle. In such cases where class A shows error in draft analysis it should be reported to the Class A Design Engineer without making any changes.

The process of the draft analysis of the solid body is no different from the Class A with similar steps.

After the analysis when we take a closer look there are a few spots on the class C and class A part of the body where the surface is under 2.8 degrees but above 0 degrees.

To fix this we usually change the angle value in the draft analysis window but in this case the C class is not perpendicular to the tooling axis throughout. In most cases where the component is less complex comparitively we adjust the angle value until we achieve a complete green profile.

Also the tooling axis created for the door trim is simply in the y-axis since the cross-sections of the class A was so complex.

Draft analysis of B side feature - Dog house

Draft analysis using Side Core tooling axis for Dog house inner side portion

Tooling axis

Side Core axis

Tree Structure

END.