Abstract: A turret includes a housing connected to a machine tool, a rotatably mounted toolholder for mounting of machining tools, and an electric drive for rotating the toolholder into a particular working station for the machining tools. The electric drive has a rotor and a stator with coil windings. The rotor of the electric drive is connected to the toolholder. The stator is connected to elements of the housing. The rotary movement for the toolholder is generated without gearing and directly by the electric drive of the rotor enclosing the stator. Since both the rotor and the stator are enclosed by the toolholder and since the rotor is in direct contact with the toolholder on the side of the external circumference and rigidly connected to the toolholder for transmission of torque, the rotor-stator layout creates an external rotor for the electric drive. In that layout, the rotor rotates externally, with the tool holder and the stator being mounted internally of the housing.

Abstract: 1. Turret.

Abstract: A tool turret has a turret housing and a hollow supporting column. A head is provided at one end of the supporting column. The other end of the supporting column is connected with the turret housing. A tool face is mounted rotatably relative to the head and is lockable with this head. The tool face has at least one recess for a tool. A torque overload protection arrangement is provided between the hollow supporting column and the head and/or between the hollow supporting column and the turret housing.

Abstract: A tool turret has a locking mechanism part axially slidable relative to the turret head with a face gear engaging face gears of the turret head and the housing in its locked position. The axial slidability of the locking mechanism part out of its locked position and the curtailibility of an opposing compression spring allows disengagement of the face gear of the locking mechanism part from at least one of the other two face gears. The force of the compression spring during the load on the turret head arising in disturbance-free operation is greater than the force working through this load on the locking mechanism part in the direction of disengagement of its face gear. In case of a collision with a stress exceeding the load capacity of the tool turret, the force of the compression spring is smaller than the collision force working through this load on the locking mechanism part in the direction of a disengagement of its face gear.