Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge
Patent
1981-11-17
1984-05-15
Valentine, Donald R.
Chemistry: electrical and wave energy
Processes and products
Electrostatic field or electrical discharge
20412935, 20412946, 204206, 204224M, 204225, 204280, 204290R, 219 69W, 219 69M, 51410, 156664, 72703, 427 34, 427117, B23P 110, B23P 112, B23K 916
Patent
active
044486553
ABSTRACT:
An improved electrode and method for electroerosion machining both of traveling-wire type wherein an elongate element having a thickness of 0.05 to 0.5 mm is axially displaced to form a traveling-wire machining electrode therefrom. The traveling-wire machining electrode is juxtaposed with a workpiece across a machining gap flooded with a machining liquid issuing from a jet and a machining current from a source is passed between the electrode and the workpiece to electroerosively machine the latter. Gaseous bubbles formed by the electrical decomposition of the machining liquid tend to be adherent on the machining surface of the electrode and thus act as a thermal insulator between the electrode and the coolant machining liquid. The elongated element is formed with a rugged peripheral surface along a length thereof to facilitate the detachment of the gaseous bubbles from the machining surface of the electrode. Various ways of producing the rugged peripheral surface are described, e.g. by forming projections and recesses in a regular pattern on a cylindrical wire surface; twisting together a group of small diameter wires; winding a small diameter wire on a large diameter core wire; and forming a spiral groove in the smooth surface of a wire by means of a rotating die.
REFERENCES:
patent: 2883306 (1959-04-01), Cotter
patent: 2945936 (1960-07-01), Carman
patent: 3163058 (1964-12-01), Hunter
patent: 3896010 (1975-07-01), Vetter
patent: 4193852 (1980-03-01), Inoue
patent: 4341939 (1982-07-01), Briffod et al.
Dubno Herbert
Inoue-Japax Research Incorporated
Ross Karl F.
Valentine Donald R.
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