Traversing hoists – Overhead – Cable
Patent
1981-08-24
1984-07-03
Paschall, M. H.
Traversing hoists
Overhead
Cable
219 69D, 219 69M, B23P 108
Patent
active
044581300
ABSTRACT:
A traveling-wire electroerosive cutting method using a worktank filled with a liquid machining medium in which a workpiece is immersed. A continuous wire electrode is transported from a supply unit to a takeup unit to axially travel and thereby traverse the workpiece in a cutting zone defined between a pair of cutting guide members spanned by the electrode. A nozzle is arranged in the cutting zone to inject a high-velocity stream of the coolant liquid machining medium into the machining gap which is formed in the workpiece juxtaposed with the traveling wire electrode and which is filled with and disposed in the relatively static liquid machining medium contained in the worktank. The liquid stream injected from the nozzle has a pressure in excess of 2 kg/cm.sup.2 and preferably has a velocity in excess of 3 m/sec. A high-frequency (e.g. of a frequency of 1 kHz to 1 MHz) mechanical vibration is imparted to the traveling wire electrode in a direction transverse to the wire axis.
REFERENCES:
patent: 3168638 (1965-02-01), Riddles
patent: 3538289 (1970-11-01), Burnet et al.
patent: 3928163 (1975-12-01), Ullmann et al.
Dubno Herbert
Inoue-Japax Research Incorporated
Paschall M. H.
Ross Karl F.
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