Tool turret

A tool turret for an automated tool change process in a machine tool, the tool turret comprising:

• a tool disk being rotatable by a drive about a rotational axis and having a work station that is rotatable with the tool disk between a work position, an adjusting position and a changing position;
• a rotatable drive shaft;
• a holder that receives a machining tool, the holder being releasably fixed on the tool disk;
• and
• a clamp that is mounted on the tool disk and that receives the holder, the clamp being able to be activated and deactivated when disposed in the adjusting position through rotation of the drive shaft, and when the clamp is activated, the holder is immobilized with respect to the tool disk by friction exerted on the holder by the clamp;
• in the work position of the tool disk, the machining tool being driven by the drive shaft to machine a workpiece;
• in the adjusting position of the tool disk, the adjusting position being rotationally spaced from the work position, when the clamp has been deactivated, the holder is no longer immobilized with respect to the tool disk but is left securely engaged on the tool disk by a positive fit lock;
• and
• in the changing position of the tool disk, the changing position being rotationally spaced from the work position and from the adjusting position, after the clamp has been deactivated from the holder in the adjusting position, the positive fit lock is dis-engageable and the holder is removable from the tool disk and replaceable by another holder that is to be used.