Fender Design

INTRODUCTION

Its purpose is to keep mud, rocks, and other road debris from being thrown around by the tires. In other words, the fender is a housing for the wheels that keeps road debris contained. If there was nothing covering the wheels, all kinds of debris would be kicked up by the rotating tires. The fender not only protects your car from sustaining damage from road debris but it prevents this debris from being thrown up at other vehicles on the road and people walking by near. This is why vehicles with large, oversized tires are often required by law to install fender flares.

Types of car fenders:

• Full Bumper type
• Half Bumper type

he full bumper type fender was used in old cars, it covers the full area until the front lighting. But it has a lot of sheet metal material which is unnecessary and increases the weight of the fender. This type of fenders are no longer used in automobiles.

Mainly half bumper type is used in modern automobiles. It is basically related to scrap management. Half bumper type leads to less wastage of the blank.

We are changed from full bumper type to half bumper type to reduce the scrap rate per blank. In the full bumper, we can only produce one Fender per blank, whereas as a half bumper type, we can produce 2 fenders per blank.

There are generally 5 mountings on a Front fender-

1. A-Pillar
2. Sill
3. Cowl
4. Drip
5. Bumper

MANUFACTURING PROCESS:-

A car Fender bumper is made by a process called reaction injection molding (RIM), which basically consists of making a special polyurethane compound and introducing it into a large fender. RIM is a process that conserves raw materials and reduces costs. It is similar to injection molding except thermosetting polymers are used, which requires a curing reaction to occur within the mold. Common items made via RIM include automotive bumpers, air spoilers, and fenders.

section measurement details

• There should be some consideration followed to design the drip area of the fender.
• From the backside of the front fender, there will be 200mm clearance for the cowl(wiper motor) mounting area.
• From the front side of the front fender, there will be a 150mm clearance for the headlamp housing unit.
• The remaining area we can use to design a drip area.

DRIP AREA

section view for drip area

SILL MOUNTING:

Sill mounting is the bottom side mounting of the fender, where the mounting is done at the sill of the car

A-PILLAR MOUNTING:

The mounting takes place between the fender and a pillar.

BUMPER MOUNTING:

At the bumper mounting, the bumper will be mounted to the fender and the A-Pillar.

BAFFLE MOUNTINGS:

The wheel arch will be mounted to the baffle mountings .

model image

conclusion

the mountings in the required regions are created according to the standard measurements.