Square tube bending method and fabricated bent square tube

Abstract

The invention discloses a square tube bending method. According to the square tube bending method, a square tube comprises a first wall body, a second wall body, a third wall body and a fourth wall body which are connected in sequence; a notch is formed in the square tube; a left tube body is arranged on the left side of the notch; a right tube body is arranged on the right side of the notch; the notch comprises a first opening, a second opening and a third opening; the first opening is formed in the first wall body; the second opening is formed in the second wall body; the third opening is formed in the fourth wall body; the square tube is folded towards the direction far away from the third wall body till the first opening, the second opening and the third opening are all closed and are all welded and fixed; and the angle between the left tube body and the right tube body is set to the required bending angle. The three surfaces of the square tube are cut to form the openings according to the design requirements; force is then applied, the surface, which is not cut but remained, of the square tube can be bent till the openings are overlapped, thereby the required angle is achieved; and then, the other three surfaces are welded, so that the strength of the whole square tube can be prevented from being influenced, any angle can be achieved, and thus the welding quality can be improved. The invention further discloses a fabricated bent square tube.

Description

technical field [0001] The invention relates to the technical field of making bent square tubes, in particular to a square tube bending method and a prefabricated bent square tube. Background technique [0002] When the square tube is bent, there will be irregular wrinkling and depressions. The smaller the bending angle, the more obvious it is, and the less easy it is to bend. If it is completely broken and divided into two pieces of tailor-welded parts, there will be sharp corners on the outermost side that are easy to puncture People, and poor control of welding depth will be uneven, and false welding is prone to occur. [0003] Therefore, how to provide a square tube bending method to improve the welding quality is a technical problem to be solved urgently by those skilled in the art. Contents of the invention [0004] In view of this, the object of the present invention is to provide a square tube bending method to improve welding quality. Another object of the prese...

AI Technical Summary

Problems solved by technology

[0002] When the square tube is bent, there will be irregular wrinkling and depressions. The smaller the bending angle, the more obvious it is, and the less easy it is to bend. If it is completely broken and divided into two pieces of tailor-welded parts, there will be sharp corners on the outermost side that are easy to puncture People, and poor control of welding depth will be uneven, and prone to false welding

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