Device and method for machining composite energy absorption tube

Abstract

The invention discloses a composite energy absorption tube machining device which comprises a rectifier (1), a resistor (2), a switch (3), a capacitor (4), a boosting transformer (5), an upper fixing plate (6), a fixing bolt (7), a pressing block (8), a mould frame (9), a constraint mould (11), a coil (12), a lower fixing plate (13), a T-shaped platform (14), an exhaust vent (16), a fixing groove (17) and a wire hole (18). Compared with a hydraulic forming method and a mechanical bulging method, a composite metal energy absorption forming method based on the electromagnetic forming principle and used in the composite energy absorption tube machining device is high in machining efficiency and high in the pipe fitting forming speed and enables composite metal tubes to be formed under the high strain rate; due to the fact that the high strain deformation process can be used for forming metal materials which are deformed difficultly through a conventional method, the plasticity of the metal materials is greatly improved, and the yield strength of the materials is greatly improved. Different wave forms and reinforcing ribs can be formed by changing the shape of the constraint mould in a mould body, and the machining flexibility is high.

Description

technical field [0001] The invention relates to a processing technology for a composite energy-absorbing tube, in particular to a composite energy-absorbing tube based on the principle of electromagnetic forming and a forming device thereof. Background technique [0002] Electromagnetic forming is a high-energy, high-speed forming technology that uses the plastic deformation of metals under the action of electromagnetic force in a strong pulsed magnetic field. Electromagnetic forming has the ability to improve the plastic deformation of materials, and magnetic pulse forming uses magnetic force instead of mechanical force to process metals, so no force transmission medium is required during the forming process, the forming process is stable, the production efficiency is high, and the energy Easy to control. Generally, electromagnetic forming requires the resistivity of the workpiece to be lower than 0.15μΩ·m, which is very suitable for the processing of highly conductive mat...

AI Technical Summary

Problems solved by technology

Thin-walled steel pipe has high strength, but its conductivity is not as good as that of aluminum alloy thin-walled pipe. It cannot easily reach the required expansion size during electromagnetic expansion. Forming technology to carry out radial expansion of the metal composite tube for driving, improving its plasticity

[0006] Traditionally, metal thin-walled circular tubes are made of a single type of material, which cannot meet the complex stress process when they are crushed by collision

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