Method and device based on radial extrusion connection of end part of metal pipe and plate

Abstract

The invention discloses a method and a device based on radial extrusion connection of an end part of a metal pipe and a plate, and belongs to the technical field of connection of metal plates and pipes. The edge of an orifice of the plate is extruded through an upper die, and meanwhile, a cylindrical boss on a lower die is used for restraining, so that plastic deformation flowing towards the radial direction of the pipe is generated, radial pressure is applied to a part of the pipe, then inward necking is generated, a mechanical lock catch is formed, and reliable connection of the end part of the metal pipe and the plate is realized. A joint formed by the method and the device is high in anti-pulling strength. The method is low in manufacturing cost and high in production efficiency. The requirement on equipment is not high in the connecting process, the die is simple to machine, the connecting process is convenient and fast, the production efficiency is high, and assembly line production is easy to realize. Meanwhile, the whole connecting process is carried out at room temperature, heating is not needed, harmful gas or dust cannot be generated, and the method and the device are environment-friendly; and the performance of a base material cannot be changed before and after connection, and the material can be conveniently recycled.

Description

technical field [0001] The invention belongs to the technical field of connecting metal plates and pipes, and in particular relates to a method and a device based on the radial extrusion connection between the ends of metal pipes and plates. Background technique [0002] In recent years, with the use of lightweight sheet pipes, sheet-tube connections have been greatly applied and developed in automobiles. The demand for new sheet metal connection technology is gradually increasing. In the traditional connection technology, welding has problems such as polluting the environment and not being suitable for the connection of dissimilar materials; screw and bolt connections need to increase auxiliary parts, auxiliary equipment is required for the connection process, and the cost is high. Problems: There are problems such as the bonded joint is susceptible to environmental impact and the strength of the bonded joint is reduced. [0003] The plastic connection of plates and tubes ...

AI Technical Summary

Problems solved by technology

The demand for new sheet metal connection technology is gradually increasing. In the traditional connection technology, welding has problems such as polluting the environment and not being suitable for the connection of dissimilar materials; screw and bolt connections need to increase auxiliary parts, the connection process requires auxiliary equipment, and the cost is high. Problem; there are problems such as the bonded joint is susceptible to environmental impact and the strength of the bonded joint is reduced.

[0003] The plastic connection of plates and tubes not only meets the requirements of lightweight design and the connection of dissimilar materials, but also facilitates the automatic production of assembly lines, and can also realize the connection of plates at any part of the pipes. However, the plastic connection process of plates and tubes requires a large connection force. There is some damage to the life of the specific extrusion die, and the surface quality of the plate connecting the joint is not good

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