Variable-thickness automobile front bumper and manufacturing method thereof

Abstract

The invention provides a variable-thickness automobile front bumper and a manufacturing method thereof. The automobile front bumper comprises a front bumper body which is of a thin-wall structure. The front bumper body sequentially comprises a left body section, a left transition section, a right body section, a right transition section and a right body section. A left energy absorption box and a right energy absorption box are arranged on the inner side faces of the left body section and the right body section of the front bumper body respectively, so that the front bumper body is connected with an automobile front longitudinal beam. The left body section and the right body section are of a uniform-thickness structure. The left transition section and the right transition section are of a continuous variable-thickness structure and become thinner gradually from the two ends to the middle body section. The middle body section is of a uniform-thickness structure and is the thinnest portion of the whole front bumper body. According to the variable-thickness automobile front bumper, by means of the design of parts of different thicknesses, the requirement for collision safety of the automobile front bumper is met, and the design of light parts can be achieved at the same time.

Description

technical field [0001] The invention belongs to the field of design and manufacture of auto parts, in particular to a variable-thickness automobile front bumper and a manufacturing method thereof. Background technique [0002] In the front structure of the car body, the energy absorption characteristics of the front bumper in the collision process have a very important relationship with the safety of the car body. Low-speed collision is one of the main collision forms of road traffic safety accidents. After a frontal collision between a car and other cars or objects in urban traffic, the front bumper of the car will be damaged accordingly. If its strength is insufficient, it will be damaged during the collision process. Large deformation occurs in the middle, so that the cooling frame and longitudinal beams and other parts behind it cannot be fully protected, resulting in greater body damage, greater difficulties for vehicle maintenance, and correspondingly greater economic ...

AI Technical Summary

Problems solved by technology

At present, most front bumpers have a constant cross-sectional shape, and its characteristics will cause the front bumper to have non-uniform performance in the longitudinal direction under conditions such as bending, torsion, and compression. This constant cross-section and thickness of the front bumper are relatively The front bumper in the present invention has the disadvantages of heavy weight and high cost

At the same time, this kind of front bumper with uniform lateral performance of the body will have a surplus of performance. It is designed with excess structure and materials, which directly wastes the amount of raw materials used, and at the same time increases the weight of the car, which is not conducive to fuel saving. At the same time, the cost of materials is increased

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