Design of backdoor

AIM:- Design of back door for the given styling surface with proper engineering features and regulation.

CAR BACK DOOR:- In car back door there are many fitting as well mounting position like hinge reinforcement, gas stay reinforcement, wiper motor reinfrorcement, laches reinforcement. In back door we have also provide lighting system. This all is the back door assembly of the car.

The component of car back door

INNER PANNEL

The inner pannel of the car door where the all reinforcement are mounted. The thickness of the inner pannel is 0.75mm. This inner pannel is made by castinng (Aluminum) or stamping dies of sheet metal.

Outer upper pannel

The outer upper pannel is styling surface. This is made by steel. The manufacturing process is press die. The upper pannel assembled with inner pannel through hemming process. The thickness of the outer pannel is 0.75mm.

Inner lower pannel

The inner lower pannel is styling surface. This is made by steel. The manufacturing process is press die. The upper pannel assembled with inner pannel through hemming process. The thickness of the outer pannel is 0.75mm.

HINGE REINFORCEMENT

Hinge is the the position where back door rotate with a fix point. This provide the additional strength of the inner pannel. In this we have put the thickness of the reinforcement is 0.75mm.

GAS STAY REINFORCEMENT

Gas stay is the reinforcement where gas tay hing is mounteed. This provide the additional strength of the inner pannel. In this we have put the thickness of the reinforcement is 0.75mm.

WIPER MOTOR REINFORCEMENT

Wiper motor reinforcement is the reinforcement where wiper is mounteed. This provide the additional strength of the inner pannel. In this we have put the thickness of the reinforcement is 0.75mm.

LACHE REINFORCEMENT

Laches reinforcement is the reinforcement where lache is mounted. This provide the additional strength of the inner pannel. In this we have put the thickness of the reinforcement is 0.75mm.

BACK DOOR ASSEMBY

DESIGN METHODOLOGY

We start the designing the top down approch for this assembly modeling with full parametric. First we design the inner pannel of the door. Then we design the hinge,gasstay,wiper motor,laches reinforcement. We have also provide some embosses for energy distribution.

Important commande we have to use

• WAVE GEOMETRY LINKER
• BRIDGE CURVE
• OFFSET FACE
• OFFSECT ON SURFCE
• EXTRACT GEOMETRY
• SPLIT BODY
• TRIM BODY
• TRIM SURFACE
• TRIM & CORNER
• EDGE BLEND
• FACE BLEND
• EXTEND SHEET
• LAW EXTENSION
• EXTRUDE
• THICKEN
• DRAFT ANALYSIS

DRAFT ANALYSIS OF INNER PANNEL

We anaysis the draft analysis of the inner pannel. The draft angle is 7 degree which is shown in the below image.

Tooling direction and hinge path

Conclusion

Car back door design with all necessary reinforcement. We also consider the regulation of design..