Design of backdoor

Upper outer panel sew the all surface

use offset in face and trim to create good surface using bridge curve and through curve mesh

Using law extension TO create C surface

offset in face to create hemming flange

use to three face bend created

to create lower outer panel using offset and law extension

Inner Panel:

The inner panel is a component which is used for strengthen the door assembly and it is one of the most important components on which all accessories are mounted like hinges, glass guide channel, molded trim, latch etc. the possible method is the integration method. In the integration method, the part is stamped out of a single blank. This reduces the number of tools needed, the assembly cost and eliminates any fit ability problem.

Design methodology:

Firstly we have to check if there are any surface irregularities in the skin data, if irregularities are there, then repair if by using a bridge curve and through curve nesh and sew it.Then we create a sealing flange. Generally with the help of master sketch, we will design the panel with appropriate dimensions. But here there is no master sketch, we designed by assumption.

Creation of Tooling Direction:

Back door is going to be manufactured by deep drawing process. In deep drawing process has a tool which is core and Die. The core part follows the single straight path the inclination angle of the core is known as tooling direction. The tooling direction/axis is created so, that the manufacturing team take the reference of this tooling axis and manufacture the part accordingly. It is designed by using Top down approach.

Design Consideration:

1.Rear visibilities for safety and functionality,

2.Support structures like hinges and Gas stay/ Power lifter,

3.Rear crash regulations,

4.Boot space,

5.Mounts for wiper motor and lights,

6.Strength criteria,Draft analysis

Hinge mountain and gas stray mountain

DOOR LOCK LATCH

to create emboss for increasing strength with out adding material

wiper motor mountain

Hinge Embosses

The backdoor is a swinging commodity, which swings with the help of hinges. This can be done by tentatively positioning the hinges and on the hinge axis, we take a center point. Again we take another center point on the latch hole. Taking these two points as a reference we draw a circle. This circle is the striker trajectory and it has to be perpendicular. This can be achieved by moving the hinge axis back and forth or by rotating the latch area.nd forth or by rotating the latch area.