Design of backdoor

Back Door Design

Aim - Design the Back Door of Car using given styling

Software Used- NX

Back Door Assembly-

• Inner panel
• outer panel
• hinge and its reinforcement
• wiper motor reinforcement
• latch & stricker and its reinforcement 

Thickness Of Part-

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

Parts of the BackDoor-

a. Inner Panel

b. Hinge  Mounting Bracket( LH & RH )

c. Gas Stay  Bracket( LH & RH )

d. Wiper Motor  Support Bracket

e. Latch

f. Latch Reinforcement

g. Hinge reinforcement( LH & RH )

h. Gas Stay Reinforcement( LH & RH )

Input-

Checking it for errors

Found errors during join surface at fillets of class-A.

So i decided to recreate that blends and created the error free Join(Sew).

Tooling Axis-

Created the Tooling Axis this helps while manufacturing the part.

Upper Outer Panel-

Lower Outer Panel-

Creation of Ceiling Flange-

After that creation of ceiling flange by offset the surface.

Creation of Connecting Flange-

Created Connecting flange by considering tooling direction

Created Inner Panel Flange-

Inner Pannel-

Draft Analysis-

Reinforcement assembly-

Latcher And Striker Trajectory-

Backdoor is  the swinging part which rotates about hinge axis.

The position and orientation of latch striker is important for proper opening and closing of the backdoor.

The positioning is done by sketching a circle with center as the axis of  the hinge which passes through  the striker at  appropriate position with respect to inner panel.

Hemming-

Hemming is a forming operation  in which the edges of  the sheet are folded  over another  part in order  to achieve a tight fit.

Usually hemming  operations are used  to connect parts together ,to improve the appearance  of a part and to reinforce part edges.

In car part  production,hemming is used in  assembly as a secondary operation  after deep drawing, trimming  and flanging operations  to join two  sheet metal parts  (outer and inner)  together.

Corner Relief-

Section View-