Toolholder for a machine tool

Details Toolholder for a machine tool Toolholder for a machine tool

1988-10-11

1990-03-27

Bilinsky, Z. R.

Metal working

Plural diverse manufacturing apparatus including means for...

Common reciprocating support for spaced tools

279 1A, 279 1TS, B23Q 3157

Patent

active

049108603

ABSTRACT:
A toolholder is provided for a machine tool where a plurality of standardized toolholders, in particular steeptaper toolholders, can be picked up from a tool magazine by means of grippers and can be introduced into a spindle of a spindle stock. The toolholder comprises an annular flange having an upwardly converging outer conical surface. The gripper can be provided with an inner conical surface widening towards the top. The two surfaces come into frictional engagement with each other under the action of the own weight of the toolholder, during introduction of the toolholder into the spindle, while the surfaces are lifted off from each other when the toolholder occupies its fully engaged position in the spindle.
In order to enable standardized toolholders with relatively small angular flanges to be used also in machine tools whose grippers are adapted for so-called brake-bearing toolholders with flanges of larger dimensions, the inner conical surface is provided on an annular insert which can be fitted as an adapter in grippers designed for toolholders with annular flanges of larger diameter.

REFERENCES:
patent: 3672691 (1972-06-01), Hammond
patent: 4616398 (1986-10-01), Rutschle et al.

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