Week 9 - Attachment Feature Creation (Ribs & Screw Boss) - Challenge 1

Aim: To create a plastic door handle component from the given Class A surface

Methodology: The steps followed are as mentioned below

1. Tooling axis is created
2. Draft analysis is performed
3. Class-B surface is generated
4. Class-C surface is generated
5. A closed solid model is created from the surfaces.
6. create ribs and boss screw

Draft analysis

1. The surface to the analysed is selected and the material options is turned on in the customize option.
2. The feature draft analysis tool is opened.
3. The compass is aligned with the tooling direction.
4. It is made sure that the pulling direction is correct. Otherwise it is flipped from the open toolbar.
5. The surface is selected to make sure that the draft values are in permissible limits on all faces.

Draft analysis of class A surface

ribs calculation

closed body thickness t = 2.5

rib thickness W=0.4*2.5= 1

rib depth d = 5*2.5= 12.5

draft angle = 0.5 deg

fillet radius = 0.25 mm

tip thickness=0.71 mm

boss screw calculation

m6 drill diameter= 5mm

boss screw Thickness T= 0.4*2.5= 1mm

boss screw height H= 3*5= 15mm(3:1)

draft angle = 0.5 deg

fillet radius = 0.25 mm

different view of object

design tree