Challenge

Week 9 - Attachment Feature Creation - Challenge 2

For Draft Analysis, we need Tooling Axis. So here we have selected a circle like base surface and create center point on it.
From that center, we have created normal line to the surface.
We have choose this direction because, in this direction whole component is visible properly, so its a way to create Tooling Axis in such direction, so that is our Tooling Axis.

As we get Tooling Axis, we can go for the Draft Analysis by click on Feature Draft Analysis tool.
We have to ensure that our component is in the material view mode.
As a Draft Analysis tool open, we can see that 2 boxes as shown in image in right side of the screen.
Then click on Compass, so compass will be seen on screen. Do align this compass with Tooling Axis and click on lock symbol.
Then click on Class A Surface, so surface get colour on it.
Green colour indicates that, draft angle is above the 3 degrees.
Red colour indicates that, draft angle is between 0 to 3 degrees.
Blue colour indicates that, draft angle is below 0 degree or negative.

For the Draft Analysis by click on Feature Draft Analysis tool.
We have to ensure that our component is in the material view mode.
As a Draft Analysis tool open, we can see that 2 boxes as shown in image in right side of the screen.
Then click on Compass, so compass will be seen on screen. Do align this compass with Tooling Axis and click on lock symbol.
Then click on Final Plastic Component, so component get colour on it.
Green colour indicates that, draft angle is above the 3 degrees.
Red colour indicates that, draft angle is between 0 to 3 degrees.
Blue colour indicates that, draft angle is below 0 degree or negative.

Screenshot of Drfat Analysis Report for the Dog House :
Dog House is a one extra component added at main component for prevention from Sink Marks.
Dog House can solve lenght issue of Screw Boss.
If Screw Boss is perpendicular to the Tooling Axis, then we have to use Dog House.

For Designing of Dog House, we have to use several standard values to prevent the component from plastic defects.
Width of the Dog House should be a minimum 12mm, so here we have kept as a 35.1 mm.
Here ratio of Width of Dog House to its Height should be a 3:1, so by this relation we get value for the Height is 11.7 mm.
Draft should be 1.5 degrees, so we have given 1.5 degrees at outer surface of the Dog House by using Sweep tool and with Tooling Axis.
For Draft in inner surfaces of the Dog House, we need another axis, which will be perpendicular to the Tooling Axis, which is our Side Core Axis.
So here we give Draft at inner surfaces of Dog House with 0.5 degrees.
Wall thickness of the Dog House from its base and between height of 3mm to 6mm should be a 0.4 × Thickness of the Plastic Component.
So we have take 4 mm height and as thickness of plastic component is 2.5 mm, so we get 1 mm as a wall thickness for the Dog House upto the 4 mm height from the base of it.
We have Given 2.5 radius fillet at outer side of the Dog House and O.5 radius fillet at inside part of the Dog House.

Ship work like this
in your own course.