A small electromagnetic riveting gun cooling device and its realization method

Abstract

The invention relates to a cooling device of a small-sized electromagnetic riveter and an implementation method of the cooling device of the small-sized electromagnetic riveter. Considering that a coil generates heat during single discharge of the electromagnetic riveter, after repeated riveting discharge, the heat generated by the work coil accumulates, the temperature becomes lower gradually from the center of the coil to the edge of the coil in the radial direction, the insulating layer of the portion, generating most heat, of the coil is prone to breakdown, and then the work coil is damaged. According to the cooling device of the small-sized electromagnetic riveter, cooling gas is fed into the riveter through a guide pipe, the cooling gas enters a cooling air channel and then is guided to the surface of a mandrel through a cooling air inlet formed between the cooling air channel and the mandrel, the mandrel is sleeved with a multi-groove-type coil sleeve capable of sliding relative to the mandrel in a reciprocating manner, the cooling gas is guided to surface of the work coil in the radial direction of the work coil finally along the inner surface of the multi-groove-type coil sleeve, and then the purpose of cooling the work coil is achieved; and the gas is discharged out of the riveter after cooling from a gap reserved at the front end of the riveter.

Description

technical field [0001] The invention relates to the technical field of mechanical processing, in particular to a cooling device for a small electromagnetic riveting gun and a realization method thereof. Background technique [0002] Electromagnetic riveting technology generally connects two or more plates together by riveting. Compared with mechanical bolt connection, it is faster and more reliable, and it is easy to realize automation. It is mainly used in the aerospace field. The working principle of the electromagnetic riveting gun is to use the capacitor to store energy and then discharge through the coil to generate a pulsed strong magnetic field and induce an eddy current in the drive plate. Under the interaction of the two currents, an electromagnetic repulsion force is generated, and the repulsion force is generated in the amplifier in the form of a stress wave. The middle propagation acts on the rivet, and finally achieves the purpose of riveting. Chinese Invention...

AI Technical Summary

Problems solved by technology

[0004] In view of this, the purpose of the present invention is to provide a small electromagnetic riveting gun cooling device and its implementation method, which solves the problem that the electromagnetic riveting gun generates a lot of heat due to the current skin effect and heat conduction due to the continuous discharge of the electromagnetic riveting gun. , to prevent the insulation layer from being broken down and damage the coil, effectively reducing the coil surface temperature

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