Design of backdoor

AUTOMOTIVE DESIGN OF CAR BACK DOOR USING NX CAD

OBJECTIVE:

           i) From the given styling surface, develop a back door using appropriate design methodologies.

         ii) The objective of this project is to design a BIW Back Door of a car with an Inner Panel, Outer Panel, and Reinforcements for the Hinges, Gas stay, Wiper Motor, and Latch by following the engineering standards.

           iii) The Inner Panel must be subjected to Draft Analysis for verifying whether it satisfies the Deep Drawing requirements for the tooling direction created in the design.

Major Parts and Reinforcements:

               The backdoor consists of the following basic components:

1. Backdoor Outer Panel (Upper)

2. Backdoor Outer Panel (Lower)

3. Backdoor Inner Panel

4. Hinge Reinforcements (LH & RH)

5. Gas-Stay Reinforcements (LH & RH)

DESIGN OF BACKDOOR OUTER PANEL:

               The Outer Panel is the styling surface of the back door. Other components of the backdoor are designed with reference to the outer panel. It acts as the outer cover and deals with the aesthetics of the car.

In this design outer panel is divided into two parts

1. Outer Upper Panel

2. Outer Lower Panel

Outer Upper Panel:

          The Outer Upper Panel Extracted from a styling surface.

          The panel is altered for the required design with the surface tools of NX CAD

          The thickness provided for the outer panel is 0.75 

THICKEN

 Thickened surface with 0.75mm

Outer Upper Panel:

          The Outer Upper Panel Extracted from a styling surface.

          The panel is altered for the required design with the surface tools of NX CAD

          The thickness provided for the outer panel is 0.75 

DRAFT ANALYSIS:

• The draft analysis will be performed for the tooling direction created at first and checked that the model is suitable for manufacturing.

• Then to get a complete green portion the necessary changes to the draft angle of the embosses were carried out by optimizing the model.

• The Draft Analysis command enables us to detect that the part drafted will be easily removed or not.

• This type of analysis is performed based on color ranges identifying zones on the analyzed element where the deviation from the draft direction at any point, corresponds to specified values.