Gear cutting – milling – or planing – Milling – With cutter holder
Patent
1998-06-16
2000-06-20
Bishop, Steven C.
Gear cutting, milling, or planing
Milling
With cutter holder
279 208, 279103, 409233, B23C 526, B23B 3140
Patent
active
060770031
ABSTRACT:
A tool holder with an elongate and expanding sleeve within a confining recess of a machine spindle to circumferentially engage the machine spindle and accurately, firmly and concentrically engage a machine tool adjacent to a machine spindle. In one form, a tapered expanding sleeve is disposed about the exterior of the tool holder and is received between the tool holder and the machine spindle in a tapered recess of the machine spindle. A hydraulic fluid is disposed between the tool holder and the expanding sleeve and is pressurized to expand the sleeve into firm engagement with the machine spindle. In another form, the expanding sleeve is received interiorly of a central bore within the tool holder and longitudinal grooves are provided in the sleeve about its circumference forming generally individual fingers. An expander member is disposed within the expanding sleeve and is slidably displaceable to expand the expansion sleeve into firm engagement with the inner wall of the tool holder, which preferably has slots machined through the wall to facilitate displacement of the wall, and thereby urge the tool holder into firm engagement with the machine spindle.
REFERENCES:
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patent: 4726721 (1988-02-01), Heel et al.
patent: 5030047 (1991-07-01), Pfalzgraf
patent: 5201621 (1993-04-01), McMurtry et al.
patent: 5516243 (1996-05-01), Laube
patent: 5775857 (1998-07-01), Johne
patent: 5964556 (1999-10-01), Toyomoto
Bishop Steven C.
Hydra-Lock Corporation
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