Device for piercing a hole through a metal workpiece by electric

Details Device for piercing a hole through a metal workpiece by electric Device for piercing a hole through a metal workpiece by electric

1984-11-02

1987-05-12

Pellinen, A. D.

Electric heating

Metal heating

Cutting or disintegrating

2041297, 204224M, B23H 914, B23H 100

Patent

active

046652930

ABSTRACT:
The device includes an electrode in the form of a cylindrical tube, an arrangement for causing an electrical discharge between the electrode and the workpiece, a support fixed to the workpiece and disposed at least partly inside the electrode for guiding the electrode in a direction perpendicular to the workpiece and electromagnetic structure placed inside the electrode to cause the electrode to vibrate.

REFERENCES:
patent: 2263412 (1941-11-01), Armentrout
patent: 2731538 (1956-01-01), Sherman et al.
patent: 3053965 (1962-09-01), Kintzel
patent: 3337709 (1967-08-01), Bugher
patent: 3469056 (1969-09-01), O'Connor
patent: 3506559 (1970-04-01), Bonga
patent: 3668105 (1972-06-01), Abt
patent: 4020313 (1977-04-01), Koga et al.
patent: 4083767 (1978-04-01), Suslin et al.
patent: 4104503 (1978-08-01), Di Piazza et al.
patent: 4259562 (1981-03-01), Cammann et al.
patent: 4366358 (1982-12-01), Inoue
patent: 4565914 (1986-01-01), Suzaki et al.

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