Machine tool spindle and tool holder

Details Machine tool spindle and tool holder Machine tool spindle and tool holder

1986-05-06

1987-08-04

Briggs, William R.

Gear cutting, milling, or planing

Milling

Cutter spindle or spindle support

279103, 408239R, 409234, B23Q 312, B23B 3102

Patent

active

046843019

ABSTRACT:
A machine tool spindle, which serves for interchangeably receiving tool holders (13) having different shanks (8,16), has in the spindle head (1a) thereof a frusto-conical receiving bore (3) for the reception of a steeply tapered conical shank of a first tool holder. The spindle head (1a) is provided with an end surface (4) which surrounds the frusto-conical receiving bore (3). Immediately adjacent this end surface there is provided a mating bore (8), the diameter (D) of which is slightly greater than the theoretical diameter of the frusto-conical receiving bore (3) in the plane of the end surface (4). The axial length of the mating bore (8) is equal to about 10 to 15% of the theoretical diameter. The mating bore (8) serves for the reception of a cylindrical mating extension (15) of the second tool holder (13).

REFERENCES:
patent: 2917975 (1959-12-01), Webster
patent: 3444781 (1969-05-01), Sunderman et al.
patent: 3554080 (1971-01-01), Herrmann
patent: 4596502 (1986-06-01), Cattani
patent: 4604010 (1986-08-01), Reeves
VDMA-Tagung (Documents of the Firm Valenite-Modco. GmbH, D-6920 Sinheim/Elsenz, "VAL-Clamping Device for Flexible Production)-pp. 1-10.

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