The document provides a comprehensive guide on plastic product design for automotive interior and exterior trims, focusing on draft analysis, main tooling direction, and parting line creation. It outlines the necessary steps and criteria for conducting draft analysis, determining tooling direction, and extracting parting lines using various methods and tools. Key parameters include material modes, feasibility checks, and adherence to OEM standards in the design process.

1. Plastic Product Design
Automotive Interior Exterior Trims

2. INDEX
• Introduction to draft Analysis
• Steps of draft Analysis
• Introduction to main tooling direction
• Step to create main tooling direction
• Introduction to parting line
• steps to create parting line
• Examples

3. Introduction to draft Analysis
• It is analysis of plastic component to determine whether part
is actually feasible to manufacture or not.
• Input required for draft Analysis :-
1.Solid body
2.Tooling direction
3.Material mode
Shading with Material
1
2
3

4. Steps of draft Analysis
STEP 1 - Switch to material mode
STEP 2 - Activate feature draft analysis
Feature Draft Analysis
Shading with Material

5. Steps of draft Analysis
Customize view parameters
With this process, We can also select material mode for
draft analysis

6. Steps of draft Analysis
STEP 3 – Place the compass on main tooling direction
Compass
Keep Compass logo activated

7. Steps of draft Analysis
STEP 4 – Set parameter as per requirement
Green Area clear in main tooling
Red Area having no draft in main tooling
Blue Area undercut in main tooling
Note: Color specified for draft
analysis may be different from
OEM to OEM

8. Steps of draft Analysis
STEP 5 – Click the solid body area of which draft area need to be done

9. Steps of draft Analysis
STEP 5 – Check A surface for feasibility
Area clear in main tooling

10. Steps of draft Analysis
STEP 5 – Check B surface for feasibility
Inverse the draft
direction
Area clear in main tooling

11. Introduction to main tooling direction
The direction in which core clears part from cavity is called Main Tooling direction.
• Main tooling direction defined by OEM and provided with A surface
• Final component must be clear in Main Tooling Direction
• Components Main Tooling direction depends on Assembly direction in Automobile
Main Tooling Direction

12. Introduction to main tooling direction
Door Panel: Y-Axis , Generally tooling also Y-Axis
Instrumental Panel: X-Axis
Console: Z-Axis
Bumper: X-Axis
X-Axis
Bumper
Z-Axis
Console

13. Introduction to main tooling direction
Piece Hot RunnerComponent
Main Tooling
Direction

14. Steps to create main tooling direction
STEP 1 – Draw line perpendicular to A surface of part

15. Steps to create main tooling direction
STEP 2 – Check with draft analysis whether area clear in Drawn direction
Area clear in main tooling

16. Steps to create main tooling direction
STEP 3 – If part not clear in drawn normal direction, then we need to check at
different angles line drawn to normal with trail and error method.
Area clear in main tooling

17. Introduction to parting line
It is edge which differentiate core and cavity
Parting Line

18. Introduction to parting line
STEP 2 – Study where core and cavity differentiate with help of draft analysis.
In given case green area is clear in cavity and blue area clear in core.
Parting Line can be extracted as highlighted.

19. Introduction to parting line
STEP 3 – Start parting line extracting with help of command EXTRACT
Parting line can be parametric non-parametric as per requirement

20. Introduction to parting line
STEP 4 – Modify graphic properties of fully extracted parting line as per OEM
Standard and keep in separate Geometrical set in specification tree.

21. Introduction to parting line
STEP 5 – Give dedicated color to main tooling, main tooling parting line , slider/lifter
parting line for easy identification.
Avoid following color which are already used by CATIA Functions
RED UPDATE NEEDED
YELLOW CONTACT DMU
MAGENTA UNION TRIM (FACES TO REMOVE)
ORANGE SELECTON
CYAN UNION TRIM (FACES TO REMOVE)

22. With inertia command
select given A Style.
Main Tooling Direction Creation
Task 1 : By using inertia command
Step 1 : Select A Style.

23. Main Tooling Direction
Step 2 : Select Create geometry then create Centre of gravity and Axis system
Create both CG & Axis system
Select create Geometry

24. Main Tooling Direction
Step 3 : Check draft Analysis.
Area clear in Main Tooling drawn by inertia command

25. Main Tooling Direction Creation
Task : By Trail and Error method
Step 1 : Select A Style.