Abstract: The invention relates to a hydraulic device for driving an actuator to be hydraulically controlled or actuated, comprising a motor arranged in a motor housing, a compensating tank (31) for accommodating hydraulic fluid, and a hydraulic pump, which is arranged in a pump housing and driven by the motor, wherein the hydraulic pump is designed in such a way that the hydraulic pump permits conveyance of hydraulic fluid in two directions, namely in the forward direction and in the backward direction.

Abstract: The invention relates to a hydraulic device for driving an actuator to be hydraulically controlled or actuated, comprising a motor arranged in a motor housing, a compensating tank (31) for accommodating hydraulic fluid, and a hydraulic pump, which is arranged in a pump housing and driven by the motor, wherein the hydraulic pump is designed in such a way that the hydraulic pump permits conveyance of hydraulic fluid in two directions, namely in the forward direction and in the backward direction, wherein the hydraulic actuator comprises a drive cylinder, which has a first and a second cylinder chamber and a drive piston (3) arranged therebetween, to which drive piston a drive shaft (2) that can be displaced in the longitudinal direction is attached, wherein the device comprises a loading cylinder for an emergency closing spring (16), in which loading cylinder a loading cylinder chamber (12) and a loading piston (11) that can be coupled to the drive shaft (2) are arranged, wherein the emergency closing spring (1

Abstract: The invention concerns an industrial robot (4) comprising a machining tool (2) attached to one hand (3) of the robot, designed to perform a hydraulic-driven movement relative to the hand (3) and connected therefor to a hydraulic unit (10). The hydraulic unit (10) is placed directly on a mobile part of the robot, in particular directly on the robot hand (3). Therefore there is no more need for hydraulic supply lines along the arm of the robot. Further, when the robot hand (3) changes tool, no separation of hydraulic lines is required. The machining tool (2) is in particular a device for placing blind rivets, thereby enabling an entirely automated process for placing blind rivets.

Abstract: A compensating unit for a tool unit for inserting an element into a workpiece, in particular a setting unit for inserting a joining element into a workpiece. The tool unit is fastened to a mounting and being mounted, oriented in an axial direction, in such a way that, during the machining operation, a compensating movement in a plane oriented at least approximately perpendicular to the axial direction is made possible.

Abstract: A feeding unit for feeding an element to a treatment unit of a machine tool, in particular for feeding a rivet to a riveting unit, has a gripping element provided for the fastening element for the automatic take-up of the fastening element from a supply unit and automatic feed to the treatment unit. The gripping element is disposed on a rotary element rotatable about an axial direction, and at least one electromagnet is provided which is configured in such a way that a torque acting on the rotary element is generated by a magnetic force.

Abstract: The invention concerns an industrial robot (4) comprising a machining tool (2) attached to one hand (3) of the robot, designed to perform a hydraulic-driven movement relative to the hand (3) and connected therefor to a hydraulic unit (10). The hydraulic unit (10) is placed directly on a mobile part of the robot, in particular directly on the robot hand (3). Therefore there is no more need for hydraulic supply lines along the arm of the robot. Further, when the robot hand (3) changes tool, no separation of hydraulic lines is required. The machining tool (2) is in particular a device for placing blind rivets, thereby enabling an entirely automated process for placing blind rivets.

Abstract: A compensating unit for a tool unit for inserting an element into a workpiece, in particular a setting unit for inserting a joining element into a workpiece. The tool unit is fastened to a mounting and being mounted, oriented in an axial direction, in such a way that, during the machining operation, a compensating movement in a plane oriented at least approximately perpendicular to the axial direction is made possible.

Abstract: A feeding unit for feeding an element to a treatment unit of a machine tool, in particular for feeding a rivet to a riveting unit, has a gripping element provided for the fastening element for the automatic take-up of the fastening element from a supply unit and automatic feed to the treatment unit. The gripping element is disposed on a rotary element rotatable about an axial direction, and at least one electromagnet is provided which is configured in such a way that a torque acting on the rotary element is generated by a magnetic force.

Abstract: An hydraulic unit provides a pressurized hydraulic fluid at an outlet. The unit has an electric motor and a pump operated by the motor for generating pressure. A reservoir having a variable compensation volume stores the hydraulic fluid primed by the pump in a gas-free manner. The hydraulic fluid is especially pressurized in order to safely and reliably guarantee that the hydraulic fluid is gas-free. The inventive design allows for the safe and operationally reliable use of the hydraulic unit even at high acceleration values. The hydraulic unit is especially adapted for use in an industrial robot.

Abstract: A device for transmitting light signals between two structural members rotating relative to one another about an axis of rotation, one of these members bearing a light emitter, preferably a light conductor, and the other bearing a photoelectric transducer placed opposite the light emitter so as to leave a gap therebetween, the transducer converting the light signals received into electrical signals. The light emitter emits light through an emission opening provided at a predetermined distance from the axis of rotation. An annular photoelectric transducer which is centered relative to the axis of rotation is located opposite the emission opening and is irradiated by the light emerging therefrom.

Abstract: An apparatus for facing and internal turning, comprising a rotating housing and at least one carriage bearing a cutting tool and being displaceable transversely to the axis of rotation, has a drive motor in the rotating housing for displacement of the carriage and a distance measurement mechanism for directly measuring the distance of displacement of the carriage in relation to the housing, measurement and supply lines hereby extending between rotating housing and a stationary evaluation and control unit and the measurement signals and energy supply being transferred at a transfer unit from those parts of the measurement and supply lines communicating with the rotating housing to those parts of those lines communicating with the stationary evaluation and control unit.