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

Ribs and Screw Boss creation

Aim :

To create the Rib for the drill handle considering the design rules for rib creation and Screw boss creation and then perform the Draft analysis for the final component.

Objective :

• Create the Tooling axis by using the bisecting method.
• Design the class-B and class-C surfaces and join them.
• Create the solid feature by surfaces we create.
• Design the required Ribs and Screw Boss and analysis them.
• Perform the Draft analysis for the final component.

Creation of tooling axis

Tooling direction is important for plastic product design as it decides the direction for mold separation.

Step followed for the creation of tooling axis :

The first step is to observe the given class-A surface deeply and we can say the larger flat area which is perpendicular to the tooling axis. So, by considering this thing for this class-A surface tooling direction will be in the X-direction. so we create the point on the flat surface. And next is to create the reference line or axis from the Z-direction using the sketch and bisect line. This line remains the tooling axis.

Draft analysis of class A

1. The class A has to be changed to material modes in the display frame.
2. Compass is enabled aligned light along with the tooling direction.
3. Lock command is then applied to fix compass along with tooling axis.
4. Color codes are classified and Draft angle is applied.
5. Running point analysis is used to display permissible draft and angles.

Class A surface

Class B surface

Class B is created by offsetting the class A surface of 2.5mm. If there is any incomplete surface it as to be completed using options like extract, boundary, join, trim, multi section surface.

Class C surface

Class C surface is created by sweeping the class A surface.

Closed surface

Class A, B and C surface are joined and trimed to form closed surface.

Solid body

Creation of rib

Sketch for ribs and screw boss

Final product with ribs and screw boss

Rib analysis

The ribs are created based on the above given standards

Draft analysis of final component

DIFFRENT VIEWS

Conclusion

Ribs and screw bosses are created for the given class A surface by maintaning proper tree structure.