EDM with an electromagnetic shield of hollow ferrite beads float

Details EDM with an electromagnetic shield of hollow ferrite beads float EDM with an electromagnetic shield of hollow ferrite beads float

1989-10-02

1990-08-28

Pellinen, A. D.

Electric heating

Metal heating

Cutting or disintegrating

174 35MS, 219 6914, B23H 100, B23H 102, B23H 108

Patent

active

049527673

ABSTRACT:
An electric discharge machining apparatus having a shielding mechanism for prevention of an occurrence of radio interference due to electromagnetic waves which are generated during an electric discharge machining operation. The shielding mechanism comprises a plurality of shielding floats at least the surface of which are made of a magnetic material high in magnetic permeability. The floats covers a surface of a machining solution contained in a machining reservoir made of a magnetic material high in magnetic permeability, in such a manner that the shielding floats are in contact with a side wall of the machining reservoir.

REFERENCES:
patent: 3009119 (1961-11-01), Slater et al.
patent: 4670347 (1987-06-01), Lasik et al.
patent: 4703133 (1987-10-01), Miller

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