Tool fastening device

Details Tool fastening device Tool fastening device

1980-07-08

1982-10-05

Briggs, William R.

Gear cutting, milling, or planing

Milling

Cutter spindle or spindle support

279 1Q, B23C 526

Patent

active

043526128

ABSTRACT:
A tool fastening device comprises a drawbar (21, 22; 47, 48) for clamping a tool holder (10; 40) to a spindle (11; 41) of a machine tool by frictional engagement with a conical bore therein. The drawbar is connected to the tool holder by radially expansible locking means (23; 50) on the drawbar. The locking means is actuated by means of an expansion rod (28; 52). For purposes of facilitating the operation of the expansion rod there is provided forcing means (30; 57) which continuously forces the expansion rod toward the tool holder.

REFERENCES:
patent: 3481248 (1969-12-01), Engstrom
patent: 3490333 (1970-01-01), Scruton
patent: 4011791 (1977-03-01), Lanzenberger
patent: 4068559 (1978-01-01), Schmid, Jr. et al.
patent: 4226562 (1980-10-01), Schmid et al.

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