A kind of opening and closing magnetic collector for electromagnetic pulse forming of pipe fittings

Abstract

The invention discloses an opening and closing magnetic collector for pipe fitting electromagnetic pulse formation. Two half magnetic collector main bodies are equally divided into upper structures, middle structures and lower structures from top to bottom; first connecting parts, gaps and second connecting parts are arranged on one sides of the half magnetic collector main bodies; a third connecting part in one half magnetic collector main body is inserted in the gap of the other half magnetic collector main body; and a first fixing piece penetrates through the first connecting part and the second connecting part in the first half magnetic collector main body and the third connecting part in the second half magnetic collector main body, and a second fixing piece penetrates through the third connecting part in the first half magnetic collector main body and the first connecting part and the second connecting part in the second half magnetic collector main body to fixedly assemble the two magnetic collector main bodies. The opening and closing magnetic collector adopts effective internal fixation to relieve the mechanical damage to discharge coils and magnetic collectors in the electromagnetic pulse forming process when meeting opening working condition requirements, so that the efficiency of a machining system is improved.

Description

Technical field [0001] The invention belongs to the field of electromagnetic pulse forming, and relates to an opening and closing magnetic concentrator for electromagnetic pulse forming of pipe fittings. Background technique [0002] The basic principle of the metal tube electromagnetic pulse forming technology is to use a capacitor bank to discharge the forming coil. The fast changing current flows through the coil to generate a transient strong magnetic field, which makes the surface of the metal tube placed in it form an eddy current, and the electromagnetic force Deformation occurs under the action. In this technology, the magnetic collector is also an auxiliary processing equipment that is often used. [0003] An existing typical magnetic concentrator structure is: the shape is a cylinder; the axis of the cylinder is the axis, and the two bottom surfaces of the cylinder are the lower bottom surfaces. Two symmetrical truncated concavities are dug out; The hole connects the up...

AI Technical Summary

Problems solved by technology

[0004] This kind of typical magnetic collector has a simple structure and is easy to manufacture. It belongs to an inseparable integral magnetic collector. The electromagnetic force is the strongest at the position, so the innermost side of the slit is most likely to deform and expand, resulting in damage to the magnet collector, such as Figure 4 shown

However, this solution is not practical, nor does it actually solve the problem of deformation and damage of the magnetic collector, because there is no reinforced connection design between the two magnetic collectors

When in use, the two magnetic collectors will tend to separate outward due to mutual repulsion, and there is generally an installation gap between the magnetic collector and the coil, which makes the magnetic collector have space for motion acceleration, and eventually has a more violent collision with the coil. The collision will transfer the damage to the outer layer of the magnetic collector and the coil, which will cause greater equipment cost loss

[0006] To realize the opening and closing of the magnetic collector, an effective reinforcement design is essential, but if reinforcement is used outside the magnetic collector, the reinforcement must contain a connection mechanism that is strong enough and can be opened, and the thickness of the reinforcement must be relatively large. The increased distance between the magnet and the coil results in a loss of magnetic field energy and the overall efficiency of the processing system drops significantly

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