Hyperboloid current pick-up for an electrical discharge wire cut

Details Hyperboloid current pick-up for an electrical discharge wire cut Hyperboloid current pick-up for an electrical discharge wire cut

1988-04-07

1990-01-23

Pellinen, A. D.

Electric heating

Metal heating

Cutting or disintegrating

B23H 710, B23H 704

Patent

active

048960136

ABSTRACT:
An electrical discharge wire cutting machine includes a current pick-up for delivering current pulses from a power supply to an electrode wire. The current pick-up includes a central bore with a continuous curvilinear cross section. The current pick-up is mounted in a holder secured in a first open end of a cartridge barrel. A wire guide for guiding the passage of a wire electrode is mounted in a second open end of the cartridge barrel. A nozzle for directing de-ionized fluid around the wire electrode is secured on the second open end of the cartridge barrel adjacent the wire guide. The current pick-up holder includes a central bore offset from its longitudinal axis in a first direction. A wire pre-guide is mounted adjacent the current pick-up in an enlarged threaded bore of the current pick-up holder. The enlarged threaded bore is offset from the longitudinal axis of the pick-up holder in a second direction. The current pick-up includes a slot into which a tool may be inserted to rotate the current pick-up to expose different internal surfaces to the moving wire electrode.

REFERENCES:
patent: 4539459 (1985-09-01), Yamagata
patent: 4559433 (1985-12-01), Aramaki et al.

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