Discharge machining apparatus

Details Discharge machining apparatus Discharge machining apparatus

1981-09-15

1983-09-27

Paschall, M. H.

Electric heating

Metal heating

Cutting or disintegrating

219 69R, 219 69S, 2041296, 137455, B23P 108

Patent

active

044069383

ABSTRACT:
A discharge machining apparatus wherein the workpiece is supported over an aperture in the work support plate on top of a tank at the machining station for cooperation with an electrode movable toward and away from the workpiece in alignment with the aperture. A machining solution recirculation device injects the solution into the tank and removes the solution from the tank at a greater rate than it is injected into the tank. Additional fluid is directed into the tank through the aperture between the workpiece and electrode. An additional conduit having a solenoid controlled valve is provided for supplying an excess of solution to the tank upon raising of the electrode to overflow the tank and remove all sludge and combustible gases. The exhaust pipe for the solution is also adjustably mounted within the tank to more effectively position the inlet of the exhaust pipe for the optimum removal of combustible gases. A pressure release valve is provided in the side wall of the tank to vent explosive gases and prevent damage to the workpiece and electrode.

REFERENCES:
patent: 985160 (1911-02-01), Goodyear
patent: 3094469 (1963-06-01), Strauss et al.
patent: 3144542 (1964-08-01), Haas et al.
patent: 3748427 (1973-07-01), Baldwin
patent: 3878352 (1975-04-01), Inoue
patent: 4222834 (1980-09-01), Bacon et al.

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