Electromagnetic test fixture

Abstract

The invention relates to an electromagnetic test fixture which is electrically connected with an external test device so as to carry out electromagnetic test on a piece to be tested. The electromagnetic test fixture comprises a body unit and a conductive unit arranged on the body unit. The body unit is provided with two bodies which can be separately connected mutually and an accommodating spacewhich is defined by coordinating and mutually connecting the two bodies and is used for accommodating the piece to be tested. The conductive unit is arranged on the bodies, and the two bodies are mutually connected and matched to form a current channel. The current channel winds the accommodating space and the piece to be tested in the accommodating space and is electrically connected with the external test device simultaneously, thereby replacing enamelled wires wound on the piece to be test, and furthermore solving the problems derived by winding the enamelled wires.

Description

technical field [0001] The invention relates to a test fixture, in particular to an electromagnetic test fixture. Background technique [0002] refer to figure 1 Generally, the electromagnetic steel sheet 100 that cooperates with the excitation coil to produce electromagnetic effects is usually in the shape of a ring, and the current electromagnetic steel sheet manufacturing / testing industry generally adopts the method when conducting electromagnetic characteristic tests, which is to use two enameled wires 200 A primary coil (indicated by a solid line) and a secondary coil (indicated by a dotted line) are respectively wound on the annular electromagnetic steel sheet 100 to respectively form the primary side and the secondary side in the equivalent circuit, and then the primary coil The secondary coil and the secondary coil are respectively electrically connected to an external testing device 300 , and cooperate with the electromagnetic steel sheet 100 to generate an excitat...

AI Technical Summary

Problems solved by technology

[0003] However, the general implementation of winding the enameled wire 200 on the electromagnetic steel sheet 100 is generally carried out by manual winding. This method is not only time-consuming and labor-intensive, but also difficult to standardize the operation procedures. When the wire is wound, the enameled wire 200 is easily scratched, and the wire distance after winding is not easy to fix, which leads to the problem of poor accuracy of electromagnetic measurement results due to poor winding quality.

Furthermore, even if automatic winding machines are used for winding, it is not easy to keep the distance between the wires uniform, and the winding method of mechanical action is more likely to wear the enameled wire 200, and even damage the outer insulating layer of the enameled wire 200 to cause damage. Short circuit, and make it impossible to measure the electromagnetic characteristics

[0004] From the above description, it can be known that the existing electromagnetic steel sheet testing method, especially in the winding of the enameled wire, obviously still has many places to be further improved. Therefore, how to effectively and quickly test the electromagnetic steel sheet is to One of the important issues that manufacturers and testers of electromagnetic steel sheets want to solve

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