Design of backdoor
Design of Back Door
Objectives: To design a Back door assembly and develop the inner & outer panel of the back door by using the given styling data of the back door using the NX cad tool
introduction of Back Door
Backdoor or Tailgate is the hinged door at the rear part of a vehicle and can be moved up or down. It lets us access the boot space or trunk. The door or opening of a cargo area may be hinged at the top, side, or bottom. when hinged is placed at the bottom so that it opens downward. similarly when hinged is placed at the top so that it opens upward
Parts of Back door assemble:
- Inner Panel
- Outer Panel
- Hinge Mounting Bracket
- Hinge Inner Reinforcement
- Latch Inner Reinforcement
- Wiper Motor Mounting Bracket
- Gas Stay mountings and reinforcement
Design of Inner Panel
Designed with consideration of given outer panel and followed with creating of embosses, mounting brackets, and necessary reinforcement.
Embosses are given to make the inner panel stiffer and good endurance while crash.
Side view of the back door
MASTIC DATA
Mastic is a type of glue or sealant which is used for joining two parts or panels. Must be a 5mm gap between the outer panel and inner panel for applying mastic
Tooling direction
Hemming and Relief and thickening
Hemming is the process of joining two surfaces using a set of rollers and bending the parent part over the subpart. Relief is given on the outer panel to decrease the stress concentration.
thickening both outer& inner panels of the Back door with 0.75.The inner panel thicken towards outerpanel
Relief
Overall view of the Back Door
Latch placement
The hinge axis is taken as a center to draw a circle at the middle of the backdoor and the latch is placed perpendicular to that circle.
Reinforcement
1.Left&right sides of Hinges reinforcement
2.Wiper Motor reinforcement
3.Latch Reinforcement
4.Gas Stay mountings and reinforcement
Draft analysis
Draft analysis is done to see whether the metal is drawn with a particular design without any tear in the metal of disfiguration.
It is done with 5 degrees of allowance. Green is good to go
Rendering image of Back door
Conclusio