High-speed driving adapter for boring, milling and similar machi

Details High-speed driving adapter for boring, milling and similar machi High-speed driving adapter for boring, milling and similar machi

1985-01-08

1986-11-04

Weidenfeld, Gil

Gear cutting, milling, or planing

Milling

Cutter spindle or spindle support

408 57, 408234, 408124, B23C 100

Patent

active

046208240

ABSTRACT:
A high-speed driving adapter for boring, milling and similar machine tools has a gear housing fixedly connected to a spindle housing of the machine tool. The gear housing rotatably supports a drive shaft having a taper shank disposed in a conical receiving bore in the machine tool spindle. A bearing sleeve is secured to the drive shaft and a tool-receiving spindle is rotatably supported therein and has a conical receiving bore coaxial with the drive shaft for the taper shank of a tool. A sun-and-planet gear arrangement is provided between the drive shaft and tool-receiving spindle. A collet carrier having a center ejecting pin and a collet is axially movable in a coaxial bore in the tool-receiving spindle, the collet having claws which engage an annular groove at an end of the tool taper shank. Several cup springs are arranged concentrically with respect to the collet carrier and urge the collet carrier away from the receiving bore. An arrangement to release the collet and eject the taper shank includes, in a coaxial bore in the drive shaft, a hydraulically actuated piston which can move the collet carrier against the urging of the cup springs.

REFERENCES:
patent: Re26623 (1969-07-01), Erikson
patent: 3221606 (1965-12-01), Baldwin
patent: 3490333 (1970-01-01), Scruton
patent: 3568566 (1971-03-01), Weidig
patent: 4303360 (1981-12-01), Cayen et al.
"High-Speed Milling Spindle", Type 817, Sep. 1983, by Henninger KG, 7541 Straubenhardt.
"Reliable+Quick+Plus Safe: Tool Chuck," Nov. 4, 1982 by Ott.

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