A machine tool with active damping is provided, having a ram with longitudinal walls wherein vibrations are produced during machining according to at least a main bending direction (D1, D2) of the ram, a head that is arranged at one free end of the ram, actuation means for actuating the head which are arranged on one of the longitudinal walls of the ram, and damping means configured to generate at least a force (F1, F2) in the main bending direction (D1, D2) of the ram, wherein the damping means are arranged in a partial cross section of the longitudinal wall of the ram wherein the actuation means are arranged, the partial cross section being located between the actuation means and the free end of the ram on which the head is arranged.

A machine tool with active damping is provided, having a ram with longitudinal walls wherein vibrations are produced during machining according to at least a main bending direction (D1, D2) of the ram, a head that is arranged at one free end of the ram, actuation means for actuating the head which are arranged on one of the longitudinal walls of the ram, and damping means configured to generate at least a force (F1, F2) in the main bending direction (D1, D2) of the ram, wherein the damping means are arranged in a partial cross section of the longitudinal wall of the ram wherein the actuation means are arranged, the partial cross section being located between the actuation means and the free end of the ram on which the head is arranged.

A tool for machining an object including a first part including a rotatable member that is rotatable to cause rotation of a machine tool, a second part, a joint coupling the first part and the second part to enable relative movement between the first part and the second part, and a sensor to sense an object to be machined.

A tool for machining an object including a first part including a rotatable member that is rotatable to cause rotation of a machine tool, a second part, a joint coupling the first part and the second part to enable relative movement between the first part and the second part, and a sensor to sense an object to be machined.

A rotary table device includes a table provided on one end-side of a main shaft rotatably supported in a frame; and a drive transmission mechanism transmit rotation of an output shaft of a drive motor to the main shaft and including a drive transmission member and accommodated in an accommodation space formed in the frame. The table is supported with respect to the frame by a bearing provided between a lower surface of the table and an upper surface of the frame, and a space is provided between the lower surface of the table and the upper surface of the frame. The frame is provided with a communication passage configured so that the space and the accommodation space communicate with each other.

A rotary table device includes a table provided on one end-side of a main shaft rotatably supported in a frame; and a drive transmission mechanism transmit rotation of an output shaft of a drive motor to the main shaft and including a drive transmission member and accommodated in an accommodation space formed in the frame. The table is supported with respect to the frame by a bearing provided between a lower surface of the table and an upper surface of the frame, and a space is provided between the lower surface of the table and the upper surface of the frame. The frame is provided with a communication passage configured so that the space and the accommodation space communicate with each other.

A tool for machining an object comprising: a first part including a rotatable member, the rotatable member being rotatable to cause rotation of a machine tool; a second part; a joint coupling the first part and the second part to enable relative movement between the first part and the second part; and a sensor to sense an object to be machined.

A tool for machining an object comprising: a first part including a rotatable member, the rotatable member being rotatable to cause rotation of a machine tool; a second part; a joint coupling the first part and the second part to enable relative movement between the first part and the second part; and a sensor to sense an object to be machined.

A linear or rotary table is provided which can be moved in two dimensions having a stator and at least one upper slider plate movable relative to the stator in two independent translational directions or two independent rotary directions, and at least two piezoelectric linear drives for moving the upper slider plate in the two translational directions or two rotary directions, wherein a central slider plate is arranged between the stator and the upper slider plate, and the at least two piezoelectric linear drives are each attached to the stator to move the upper slider plate in the two translational directions or two rotary directions, and wherein at least one piezoelectric linear drive attached to the stator is in contact with the upper slider plate through an opening in the central slider plate to move the upper slider plate in a first translational direction or a first rotary direction.

A linear or rotary table is provided which can be moved in two dimensions having a stator and at least one upper slider plate movable relative to the stator in two independent translational directions or two independent rotary directions, and at least two piezoelectric linear drives for moving the upper slider plate in the two translational directions or two rotary directions, wherein a central slider plate is arranged between the stator and the upper slider plate, and the at least two piezoelectric linear drives are each attached to the stator to move the upper slider plate in the two translational directions or two rotary directions, and wherein at least one piezoelectric linear drive attached to the stator is in contact with the upper slider plate through an opening in the central slider plate to move the upper slider plate in a first translational direction or a first rotary direction.