Week 9 - Attachment Feature Creation - Challenge 2
AIM:
Create the Dog House for the Door Trim considering the design rules mentioned in the video. Consider the thickness of the part to be 2.5 mm.
OBJECTIVE:-
The main objective is to create a dog house under design rules .the dog house should follow the design rules. also the creation of tooling axis and to perform the draft analysis on the whole combined component.
PROCEDURE:-
DESIGN RULES WE MUST CONSIDER IN THE BEGINNING.
1. DESIGN RULES FOR SCREW BOSS:-
- Draft -0.5 degree on walls of boss
- Thickness- typically 40% of the nominal wall at the base
- Height to diameter ratio -3:1
- Radii-0.25mm maximum radii
2. DESIGN RULE OF DOG HOUSE:-
- Dog house wall thickness at the intersection of the part wall should be 40 %or less than the main wall stock.
- The height of B should 3.0-6.0mm.
TOOLING AXIS CREATION:-
It is defined as the direction in which the mould/core and cavity open. Selection of the direction of the tooling axis depends on the ease at which components can be easily ejected.
By analysing the component the most easily ejectable direction is somewhere close to the Z direction,(might be inclined to it) so we have made a sketch on the YZ plane of Axis System) to create a bisecting line considering the 2 faces which might be difficult to be tooled.
Then resultant tooling axis is created using the bisecting method.
DRAFT ANALYSIS OF CLASS A SURFACE:
CREATION OF CLASS B SURFACE:
- Exact offset of Class-A surface is taken at 2.5mm inside to develop the initial surfaces.
- Missing surfaces were built by using Multi-section surfaces.
- Finally 'Join' operation is performed.
CLASS C SURFRACE:
- From boundaries of the Class-A surface swept operations are performed.
- For surfaces normal to the tooling axis swept is performed by using 'draft direction' feature.
- For surfaces parallel to the tooling axis swept is performed by using 'reference surface feature'
- Finally 'Join' operation is performed.
CLASS A+CLASSB+CLASSC SURFACE JOINED:
CREATION OF DOG HOUSE:
FINAL TREE
