Electric heating – Metal heating – Cutting or disintegrating
Patent
1992-10-06
1995-05-30
Evans, Geoffrey S.
Electric heating
Metal heating
Cutting or disintegrating
279 20, 408 59, B23H 726
Patent
active
054203880
ABSTRACT:
Tool-holder (5) makes it possible to rotate a tool at high speed around its axis of symmetry. Its tapered end (26) is engaged in the tapered bore (16) provided in the spindle (6). In a bore of suitable shape a clamp (2) is engaged, adapted to secure the electrode tool end (1) rigidly. An injection chamber (28) communicates with the bore and is connected by radial channels (27) to a fluid inlet. The clamp (2) has radial grooves to bring the cooling fluid (25) from the injection chamber (28) to the surface of the tool (1). A sealed circuit (12,13,15) channels the liquid; it is connected by an input channel of small diameter which passes through the spindle body (10) to a small liquid inlet in the mobile element of the machining head or in the intermediary fixing element mounted on said mobile element. An annular seal (14) of small diameter is mounted in the spindle body around said channel (11').
REFERENCES:
patent: 2818490 (1957-12-01), Dixon et al.
patent: 3487748 (1970-01-01), Grage
patent: 4628171 (1986-12-01), Colby et al.
patent: 4640652 (1987-02-01), Rivera, Jr.
patent: 4705932 (1987-11-01), Aso et al.
patent: 4795292 (1989-01-01), Dye
patent: 4867618 (1989-09-01), Brohammer
patent: 4957398 (1990-09-01), Schneider et al.
patent: 5028178 (1991-07-01), Ronen
Charmilles Technologies
Evans Geoffrey S.
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