Title:
MECHANISM FOR FEEDING WIRE IN WIRE CUT ELECTRIC DISCHARGE MACHINE
Document Type and Number:
WIPO Patent Application WO/1987/001064
Kind Code:
A1
Abstract:
A mechanism for feeding wire in a wire cut electric discharge machine, in which a wire electrode (P) cut during the discharge machining is rewound on a reel (1) for supplying wire electrode so that said electrode can be easily connected. This mechanism has a clutch (3) of which an output shaft (5) is coupled to the reel for supplying the wire electrode and the coupling torque between the input and output members (3a, 3b) changes depending upon the supplied voltage, and has a geared motor (M) coupled to an input shaft (6) of the clutch. When the wire electrode is cut, the supplying reel is coupled to the geared motor at rest via the clutch that is served with a high voltage to firmly couple the input and output members together. Therefore, the reel is not allowed to make idle running. The supplying reel is then driven by a predetermined torque at a slow speed by the geared motor via the clutch which is served with a decreased voltage and which is loosely coupling the input and output members, whereby the wire electrode is rewound.
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Inventors:
ASO TOSHIYUKI (JP)
ISHIBASHI TAMOTSU (JP)
ISHIBASHI TAMOTSU (JP)
Application Number:
PCT/JP1986/000414
Publication Date:
February 26, 1987
Filing Date:
August 13, 1986
Export Citation:
Assignee:
FANUC LTD (JP)
International Classes:
B23H7/10; (IPC1-7): B23H7/10
Foreign References:
| JPS522838B2 | 1977-01-24 | |||
| JPS58202725A | 1983-11-26 | |||
| JPS5955627U | 1984-04-11 | |||
| JPS5749336B2 | 1982-10-21 |
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