Gear cutting – milling – or planing – Milling – Cutter spindle or spindle support
Patent
1983-09-06
1986-05-06
Bilinsky, Z. R.
Gear cutting, milling, or planing
Milling
Cutter spindle or spindle support
408239R, B23B 3104, B23C 526
Patent
active
045868603
ABSTRACT:
A spindle head for a machine tool rotatably carries a tool spindle, which is drivingly connected with an output shaft of a drive motor provided in axial alignment therewith. A drawing bar received in an axial through hole of the tool spindle is urged by means of springs for clamping on the tool spindle a tool being inserted into a front tapered bore of the tool spindle. In order to move the drawing bar against the springs and thereby to unclamp the tool from the tool spindle, an annular cylinder device is provided around the tool spindle. This cylinder device, when supplied with pressurized fluid, moves first and second operating members toward and away from each other in the axial direction of the tool spindle. The first operating member is abuttable with a first abutting member fixed on the tool spindle, while the second operating member is abuttable with a second abutting member, which is secured to the drawing bar, with opposite end portions thereof extending externally of the tool spindle through elongate holes formed in the tool spindle. Accordingly, movement of the first and second operating members toward each other causes the second abutting member and the drawing bar to move against the springs without applying substantial thrust force to the tool spindle.
REFERENCES:
patent: 3490333 (1970-01-01), Scruton
patent: 3520228 (1970-07-01), Wohlteil
Hasegawa Toshifumi
Kanii Norikazu
Ohkoshi Fumihiko
Bilinsky Z. R.
Toyoda Koki Kabushiki Kaisha
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