CNC wire-cutting machines are the success of mechatronics, but most machines have a flaw that cannot be ignored. That is, the machine itself does not have a protective device for electromagnetic radiation. With the wide application of such machine tools, the pollution of electromagnetic radiation to the environment is becoming increasingly serious. The source of the electromagnetic wave is in the spark zone between the electrode (aluminum wire) and the workpiece. How is it generated? According to the analysis, the high-frequency current in the device changes continuously and instantaneously from 10 to 20 kHz, and the high-frequency electromagnetic field generated by them is sent to the three-dimensional space in the form of electromagnetic waves.
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