Tool holder for boring, milling and the like machine tools

Details Tool holder for boring, milling and the like machine tools Tool holder for boring, milling and the like machine tools

1984-02-16

1985-12-24

Desmond, Eugene F.

Gear cutting, milling, or planing

Milling

Cutter spindle or spindle support

279 1E, B23C 900

Patent

active

045603103

ABSTRACT:
A tool holder for boring, milling and the like machine tools has a conical shaft with a support member arranged coaxially on said conical shaft. The conical shaft fits into a conical first receiving bore of the machine tool spindle. The support member has a second conical receiving bore for the conical shaft of a tool. The second conical receiving bore is coaxial with the tool holder conical shaft and is smaller than the first receiving bore of the spindle. The tool holder conical shaft has a coaxial bore, in which is axially movable a collet carrier with a collet. The ends of the collet are constructed as claws and engage an annular groove at the free end of the tool conical shaft. Several axially acting cup-spring packages are arranged in the support member concentrically with respect to the second conical receiving bore. The cup-spring packages act onto the collet carrier through several radially extending support arms for clamping the tool conical shaft in the tool holder. To release the collet and to eject the tool conical shaft, at least one hydraulically loadable piston, which acts onto the collet carrier opposite to the spring pressure, is provided in the bore of the tool holder conical shaft.

REFERENCES:
patent: 3680435 (1972-08-01), DePlante

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