Fender Design
FENDER DESIGN
To design a fender and drip area for the Sill, Bumper, Baffle(Splash), and A-Pillar mount according to the Engineering standard with given skin data and master section.
Fendor
In a car, the fender is the structure that extends between the front door and front bumper, protecting the front wheels & the rear wheels.
Fender is the US english term for the automobile part (vechicle body) the frames that covers the wheel well (fender underside).
Its primary purpose is ti prevent from sand, mud, rocks, liquids and other road spray from being thrown into air by rotating tire.
When vechile is moving , tires pick up stones and others and hurl them in all directions. Fendors are badsically present to prevent any injuries to pedetrians and contain the motion of the particles.
Most passenger vechile have four fenders, one over each wheel. For vechicle with narrow car boy that exposes fire, the fender is an exposed curve top of the tire. For wide body vehicles that covers the tire , the fender forms the wheel well sorrounding the tire, and is not directily visible from above the car body.
Types of fender :
1. Full bumper type fender
2. Half bumper type fender
1.Full bumper type fender
This types of fender are narrow and cover the wheel well fully. Now a days this type of fender are not in use. Also this type of fender mostly have indicator hole in it.
2.Half bumper type fender
This is type of fender are mostly used by industries now a days and it will cover half of the wheel well.
Mounting Points in fender :
There are five mounting points in fender
1.Body
2.A piller
3.Sill
4.Cowl
5.Drip
All the mounting were joined with fasterners and all the area will covered.
In fender, surface mounting in body is the larger surface and it will connects with hinge and A piller connects drip which we design here, it is a smaller portion. Sill area in bottom of the car, it will be connected with fastners
Baffle mounting area is larger area which have to connected without gaps. It will only protects inside of car from dust particle from road . Bumper mounting area will be in the front of the car, Bumper is the plastic part which will also connected with fastners.
Design parameters :
Mounting area for all other areas of fender in hands of design engineer expext drip. Drip have to designed with parameters metioned above.
MANUFACTURING OF FRONT FENDER :
Process planning: The purpose of process planning of automotive panels is to identify the number of operations, the tasks in each operation, and the content of each task. This research proposes an automatic reasoning procedure based on expert experience and the laws of physics.
Blank size calculation.
Trimming task: The trimming task is separated into two parts.
Restriking task: The restriking task is necessary when surfaces deform because of springback after drawing and trimming, or the accuracy requirement is high because a surface overlaps another surface of another panel during assembly. To overcome the springback of sheet metal restriking is required.
Piercing task: Each hole feature requires a piercing task. Hole features can be classified as basic holes, lock holes, and enlarge holes based on their different functions during assembly. A basic hole is for locating the panel, and a lock hole is for locking panels.
Burying task: Removing the sharp edges and harmful burs from the component.
Design od fender :
Designing of fender includes mounting position of drip, sill, bumper, baffle and A piller.
1. First I have created mounting position for drip. To create this mounting position i have follewed the master section.
Already, skin data given with flange i have trimed the flange to 5mm.
2. Second I have created the mounting position for bumper with three holes. Dia of the holes is 6 mm and required clearence where given to it.
3. Third i have created mountimg position for baffle area. The baffle is the plastic part so screws are used for mounting. So creating of emboss is avoided.
4. Fourth I have to create mounting position for sill. I have created it with two holes.
5. Last and important mounting postion is A piller mounting position i have created it with two holes for mounting.
