Backdoor or Tailgate Design using Sheet Metal Emboss Hemming and Punching for Positioning of Mounting of Latch Striker, Gas Stay, Wiper Motor, Hing with Rear Roof Rail Using Design Concept and Nx-Cad Software .
Project Objective: In this project, I am going to Design the Backdoor or Tailgate in Positioning of Latch Striker, Gas Stay, Wiper Motor, Hing Emboss & Reinforcement, and Hemming using Nx-Cad.
About Backdoor:
The Backdoor is the panel that covers the boot (or trunk) of an automobile. It enables access to the main luggage compartment. A hinge allows the boot lid to be raised, while devices such as springs or gas cylinders hold it up in the open position.
In principle, boot lids have to fulfill similar requirements and are subject to the same design guidelines as bonnets. However, aluminum sheets are used much less for Tailgate than for bonnets.
The Backdoor or Tailgate are hinged at the top and open upwards, tailgates are lateral opening doors which are hinged at the left or right side. They greatly benefit from a reduced weight due to easier handling. In addition, a reduced weight can translate into significantly lower rear axle loads (as these panels overhang the rear axle) and hence additional seating capacity.
Design Consideration:
- Rear Visibility
- Hinges and gas stays
- Fit and Clearances
- Boot spaces and accessibility
Emboss Latch Striker, Gas Stay, Wiper Motor, and Hing:
Embossing is a metal forming process for producing raised or sunken designs or relief in sheet material by means of matched male and female roller dies, theoretically with no change in metal thickness. Embosses are created to provide additional. strength and to direct the forces towards the hinge and body of the car.
Reinforcement:
Instead of making the whole inner panel of a thicker sheet, a sheet with less thickness in addition to local reinforcement is provided to increase the strength of the component and reduce the weight.
Mastic Sealing:
As we know that the main purpose of the outer panel is for the aesthetic looks. Thus we cannot use bolts or welding. This has to be done with the help of the hemming and mastic sealants. Mastic sealants are elastic compound that behaves like the rubber. It is placed between the outer and inner panels. Initially is it in paste form, but after the hot furnace bath, it gets hardened thus joining the outer and inner panel. Mastic sealant has the tendency to increase the strength of the panel and
has an influence of 80 mm in diameter.
Hemming:
Hemming is the process in which the edge is rolled flush to itself, while a seam joins the edges of two materials. Normally hemming operations are used to connect parts together, to improve the appearance of a part, and to reinforce part edges.
Relief is provided onto the part or component in order to remove any stresses developed in a particular area i.e sharp corners that take place during the hemming process are carried out. Thus corners are rounded or chamfered.
Final Assembly:
Conclusion:
Thus, I have Designed of Backdoor using Emboss Latch Striker, Gas Stay, Wiper Motor, and Hing for improving the strength of the Body.
Google Drive Module Link: https://drive.google.com/file/d/1LY0jmrbGMGtwaNWMV2WBnnG2CXIf_Pqm/view?usp=sharing
Thanks & Regards
Rajnish Kumar