Plate-pipe connecting method and device based on local radial extrusion

Abstract

The invention discloses a plate-pipe connecting method and device based on local radial extrusion, and belongs to the technical field of metal plastic connection. An upper die and a lower die act on an extrusion die of a sectioning structure, a pipe generates local extrusion deformation through circumferential extrusion of the extrusion die on the pipe, meanwhile, an elastic body in a groove enables the local pipe not to be stressed and deformed through elastic deformation, and therefore a mechanical locking structure of the pipe and a plate is formed locally. The device is simple in structure, reasonable in design, convenient to install and good in compatibility with conventional equipment; and the plate and the pipe can be connected at any position, connecting auxiliary parts are not added, the lightweight design requirement is met, the connecting strength flexibility of the plate and the pipe is achieved, and the device is suitable for large-scale automatic production and does not cause environmental pollution.

Description

technical field [0001] The invention belongs to the technical field of metal plastic connection, and in particular relates to a plate-pipe connection method and device based on partial radial extrusion. Background technique [0002] In recent years, with the wide-scale use of lightweight technology in vehicles such as automobiles and airplanes, the connection technology between plates and pipes has been greatly developed. The demand for plate and tube connections in the fields of automobiles and construction is gradually increasing. [0003] In the traditional plate-tube connection process, auxiliary parts need to be added for bolted connection, which does not meet the requirements of lightweight design. At the same time, the plate-tube connected by bolts is easy to fall off under vibration and other environments; welding process is an important production process for plate-tube joints, but for The same or dissimilar materials with large differences in performance and wall ...

AI Technical Summary

Problems solved by technology

[0003] In the traditional plate-tube connection process, auxiliary parts need to be added for bolted connection, which does not meet the requirements of lightweight design. At the same time, the plate-tube connected by bolts is easy to fall off under vibration and other environments; welding process is an important production process for plate-tube joints, but for The same or dissimilar materials with large differences in performance and wall thickness have problems such as welding difficulties, many joint defects, and difficulty in guaranteeing joint strength.

At the same time, the welding process produces exhaust gas and dust, which is easy to cause environmental pollution

Glued joints have low connection strength, the adhesive manufacturing cycle is long, and the joints are easily affected by the environment

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