Tool/tool holder clamping device for use in machine tool spindle, has force- or pressure sensor arranged within machine spindle for detecting clamping forces and attached to clamping units and/or spring unit

摘要

The device has a clamping sleeve (7) that is axially movable within a machine spindle (1), and a number of clamping units (13) associated to the sleeve. The clamping units are radially movable between a clamping position and a loosening position by an axial movement of the clamping sleeve, which is stressed by a spring unit (8). A force- or pressure sensor (21) is arranged within the machine spindle for detecting clamping forces and is attached to the clamping units and/or the spring unit.