Punching mechanism

Details Punching mechanism Punching mechanism

1989-10-10

1991-06-18

Bray, W. Donald

Cutting

Processes

83576, 83577, 310 15, 310 34, 335209, 335230, B26D 100

Patent

active

050241273

ABSTRACT:
A punching mechanism includes a permanent magnet and a pole-piece connected to one pole of the permanent magnet and spaced from the other pole by a gap. A movable coil is disposed at least partially within the gap. A punch actuator is connected to the movable coil, and conductors are provided for conducting an electrical current to the coil. Current is supplied to the coil to effect a punching action.

REFERENCES:
patent: 1128036 (1915-02-01), Paulero
patent: 1138804 (1915-05-01), Simmen
patent: 2509956 (1946-11-01), Benoit
patent: 2597559 (1952-05-01), Bekey
patent: 2730103 (1956-01-01), Mackta
patent: 3486400 (1969-12-01), Westmijze et al.
patent: 3709083 (1978-01-01), Doherty et al.
patent: 3841185 (1974-10-01), Baran
patent: 3878412 (1975-04-01), Kurpanek
IBM Techanical Disclosure Bulletin, vol. 26, No. 7A, Dec. 1983, "Punch Programmer with Magnetic Retract" by A. F. Coneski et al., pp. 3173-3175.
IBM Technical Disclosure Bulletin, vol. 20, No. 4, Sep. 1977, "Automated Punch Apparatus for Forming Via Holes in a Ceramic Green Sheet", by T. J. Cochran et al., pp. 1379-1380.

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