Design of backdoor

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Aim:

To design a backdoor of the car on sheet metal using the appropriate design and provided skin data by considering design parameters.

Objective:

• To design a back door of a car with an inner panel, outer panel and reinforcement for hinges, gas stay, Wiper motor and latch.
• The inner panel is subjected to the draft analysis to ensure whether it is satisfying the deep drawing requirements for the tooling direction that is created in the design.

INTRODUCTION :

Types of doors based on working position,

1. Top Mounted Door

2. Side mounted Door

3.Bottom Door

the back door is operated by two types of comodities

1. electrically operated
2. gas stay powered

the main purpose of these mechanisims is to open the back door without heavy efforts, because the backdoor have different parts and the weight of the back door is high, so we are not able to open the back door manually, so we introduced these two types comodities. and these also decides the premium of the car, mostly the electrically operated used in premium cars.

1.gas stay powered

2.electrically operated

Back Door Assembly:

1. Inner panel
2. outer panel
3. hinge and its reinforcement
4. wiper motor reinforcement
5. latch & stricker and its reinforcement
6. gas stay reinforcement

inputs for designing of backdoor:

1. Outer Panel - 0.75 mm
2. Inner Panel - 0.75 mm
3. Reinforcements - 1.5 mm

class a surface: backdoor outer upper and lower class a surface has to be repaired according to the smoothness. After repairing the surfaces, the door is divided into two parts as Door Outer Upper and Doo Lower Panel.

First, we need to create the Tooling direction for the Deep drawing operation. It shows that all the operations like embossing is done by considering this vector direction and it will help in manufacturing the part,

Then we will be creating the Back door inner panel flange by offsetting the outer surface at a distance considering the sheet thickness and thickening direction.

Then created the connecting flange to join the inner panel and sealing flange.

Then for the windshield panel mounting, windshield panel is created and joined with sealing flange.

hinge reinforcement:

Gas Stay Emboss and Reinforcement:

Latch reinforcement:

Wiper Motor Reinforcement

AFTER ASSEMBLY:

DRAFT ANALYSIS OF INNER PANEL

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