Week 9 - Attachment Feature Creation - Challenge 2
WEEK-9,CHALLENGE-2
ATTACTHMENT FEATURE CREATION -MAYANK TIWARI
DOG HOUSE
OBJECTIVE - Create the Dog House for the Door Trim considering the design rules .
DOG HOUSE
Dog house is an engineering feature used in plastic design. Dog houses are used as support feature. Sometimes other engineering features like snaps, locators, screw bosses are mounted on them to increase their strength.
Dog houses are subjected to draft analysis to prevent breakage of the component during ejection from the mould cavity. Dog house and oher engineering components are built on the B-surface.
OBJECTIVE
- Create Tooling axis for the given CLASS -A surface.
- Create the CLASS B and C surfaces of door trim using the given CLASS-A surface.
- Create final surface model and convert it into solid body using close surface command in the part design workbench.
- Create side core axis for the dog house
- Create Dog house on the B surface by considering the design rules.
- Perform draft analysis for both Class-A surface and Final part body.
1. CHECKING CONTINUITY OF CLASS -A.


2. TOOLING AXIS CREATION.
Procedure for Tooling axis creation
- Check the best possible tooling direction by manually adjusting the compass.
- By analysing it is found that y axis as tooling direction would clear most of the faces without any difficulties.
- Now extract any surface and create a mid-point on it.
- Then create a dummy axis creating a line on the point and direction along the y axis.
- Perform draft analysis to find whether the given axis clearing the draft analysis. If not create a new tooling axis.

3. CLASS-A DRAFT ANALYSIS.
IN ANY COMPONENT, DRAFT IS GIVEN AS TO EASE IT'S EJECTION FROM MOULD.
MIN DRAFT FOR PLASTIC COMPONENT IS - 3 DEG
FOR DOG HOUSE MIN DRAFT IS 1.5 DEG FOR OUTER WALLS & 0.5 DEG FOR INNER WALLS

4. CLASS-B CREATION.

5. CLASS-C CREATION.

6. FINAL TRIM OF CLASS-A&C WITH CLASS-B.

7. FINAL CLOSED BODY.



8. DOG HOUSE DESIGN CONSIDERING DESIGN RULES.


SIDE CORE AXIS FOR DOG HOUSE.

9. DRAFT ANALYSIS ON FINAL CLOSED BODY.

10. TREE STRUCTURE.
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11. CATPART FILE IS ATTACTHED BELOW.