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US 6,639,172 B1Granted
Method of and apparatus for wire electric discharge machining capable of machining the machining subject coarsely in a dielectric fluid and finely in a gaseous environment
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsAkihiro Goto, Toshio Moro, Seiji Satou
Life of this patent
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Abstract
The wire electric discharge machining apparatus includes apparatus or generating a discharge in a gap between a wire electrode (1a) and a machining subject (2) to machine the machining subject. A gas supplying unit (8) supplies a pressurized gas in the gap between the wire electrode and the machining subject. This wire electric discharge machining apparatus has a high productivity, and it is suitable for high-precision machining.
Claims4
A wire electric discharge machining method comprising:
- generating an electric discharge into a gap between a wire electrode and a machining subject to thereby machined the machining subject;
- supplying a pressurized fluid into a nozzle;
- switching the pressurized fluid to a dielectric fluid when the machining subject is coarsely processed, and to a gas when the machining subject is finely processed;
- coarsely processing the machining subject in environment of the dielectric fluid;
- and
- finely processing the machining subject in the gaseous environment while supplying the pressurized gas in the gap between the wire electrode and the machining subject.
3 more elements
A wire electrical discharge machining apparatus comprising:
- a discharge unit which generates an electric discharge in a gap between a wire electrode and a machining subject thereby machine the machining subject;
- a dielectric fluid supplying unit which supplies a pressurized dielectric fluid in the gap;
- a gas supplying unit which supplies a pressurized gas in the gap;
- and
- a switching unit which supplies a pressurized fluid into a nozzle and for switching the pressurized fluid to a dielectric fluid or a gas, wherein
- the switching unit is provided so as to constitute the dielectric fluid supplying unit in the gas supplying unit.
3 more elements
Dependencies are inferred from the claim text.