Aluminium alloy bumper bar section bar bending forming method and device for automobile

Abstract

The invention relates to an aluminium alloy bumper bar section bar bending forming method and device for an automobile, and belongs to the field of metal ductility processing technology and equipment. The device is characterized in that the outlet of a horizontal extruder is provided with a straightening cutting device, a hydraulic drive bending device and a quenching device, an aluminium alloy blank forms a required section bar through hot extrusion, then the section bar is dragged to the required length, the section bar is straightened and cut so as to be transferred to the hydraulic bending device; after the section bar is bent, the bent section bar is quenched under a tepefaction state, less processes are utilized to realize the bending forming and quench treatment of the extruded section material; the different bending radiuses are realized through adjusting the number and position of hydraulic rods and locating pieces, the extrusion section bar is straightened and cut at the outlet of the extruder so as to be directly bent and quenched; the section bar is bent under the tepefaction state, the section transformation and surface scratch are prevented from appearing in cold bending, and the bending radiuses of the section bar is adjusted; and the volume production is realized, the production rate is improved, the generation of spent materials is reduced, and the cost is reduced.

Description

technical field [0001] The invention relates to the field of metal plastic processing technology and equipment, in particular to a bending forming method and device for aluminum alloy bumper profiles for automobiles. Background technique [0002] Automotive safety, energy saving and environmental protection have become three research hotspots with important social and economic significance in the field of automotive engineering today, and have been highly valued by relevant government departments. Under the general situation that the world requires energy conservation and environmental protection, the automobile industry is developing in the direction of lightweight and low energy consumption. Aluminum and its alloys are the preferred materials for lightweight vehicles, and they have excellent properties that other materials cannot match. Since the 1970s, the amount of aluminum used in automobiles has continued to increase. As a lightweight material, aluminum alloy is incr...

AI Technical Summary

Problems solved by technology

The above methods all use rollers or guide wheels (plates) at the exit of the extruder to bend the extruded profile, which is bent and formed at the exit of the die, and because the temperature of the extruded profile is high at the exit of the die , for hollow extruded profiles, it is difficult to ensure the cross-sectional shape, size and surface quality of curved profiles

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