Device and method for manufacturing vehicle longeron variable cross-section channel bar

Abstract

The invention relates to a device and a method for the cold bending production of reduce section channel steel for a vehicle longitudinal beam, which overcome the shortages that the prior die has poor universality, short service life, complex forming process and low production precision, and the surface quality and the mechanical property of a product after stamping cannot be guaranteed, and the like. The invention has the following measures: the device for producing the reduce section channel steel for the vehicle longitudinal beam mainly comprises a cold bending rolling mill 1, a cutter 2, a welding machine 3 and a conveying roller bed 4, and is characterized in that an extruder 5 is arranged between the cutter 2 and the welding machine 3; and the production method comprises the following steps: using the cutter 2 to perform cutting, adopting the extruder 5 to deform the reduce section segment of the channel steel and reserve a welding seam, adopting the welding machine 3 to perform welding, and cutting to length. The device and the method have the advantages of low manufacturing cost, high productivity, no need of a special die, high dimension precision, relative stamping, energy conservation, environmental protection with less pollution, small work hardening, and better product comprehensive mechanical properties.

Description

technical field [0001] The invention relates to a cold-bending forming device and method for section steel, in particular to a device and a method for cold-bending production of variable-section channel steel for longitudinal beams of automobiles. Background technique [0002] At present, variable cross-section channel steel beams for automobiles are mainly formed by stamping. Stamping forming requires special molds. Variable cross-section channel steel beams of different cross-sectional sizes and lengths require different molds. The versatility of the mold is poor, the mold life is short, and the forming process is complicated , the production accuracy is not high, the surface quality and mechanical properties of the stamped product cannot be guaranteed, the production efficiency is relatively low, and the cost is relatively high. Since stamping requires special molds, and the specifications of the frame of various models are not uniform, the cost of each set of molds is re...

AI Technical Summary

Problems solved by technology

[0002]Currently, variable cross-section channel steel girders for automobiles are mainly formed by stamping, which requires special molds. Molds and molds have poor versatility, short mold life, complex molding process, low production accuracy, surface quality and mechanical properties of stamped products cannot be guaranteed, production efficiency is relatively low, and cost is relatively high

Since stamping requires special molds, and the specifications of various car models are not uniform, the cost of each set of molds is relatively expensive (hundreds of thousands of yuan), and it takes a long time to replace the molds; therefore, the price of the automobile frame is high, the production efficiency is low, and the cost is relatively high.

In order to solve the problems of die stamping, people also use manual production methods for production, but the shape of the variable-section channel steel of the automobile beam produced by it is difficult to meet the requirements of users, and the forming pass rate is low.

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