A motor control device includes an acceleration detecting section configured to detect an acceleration of a control object, and an acceleration control section configured to control an acceleration of a motor driving the control object based on the detected acceleration, in which the acceleration control section includes a vibration component extraction filter configured to extract a vibration component generated between the motor and the control object, and the vibration component extraction filter changes a filter characteristic frequency according to at least one of a position and a mass of the control object.

A diagnostic system includes a tool to perform machining on a workpiece, a test piece to be subjected to test machining by the tool for abnormal detection, a sensor to generate sensor data representing a physical quantity generated in the test machining, and circuitry. The test piece is different from the workpiece. The circuitry controls the tool to perform the test machining in each cycle of machining on the workpiece and calculates a degree of abnormality from the sensor data of the test machining. The test machining is performed on the test piece under a test machining condition corresponding to a machining condition of the machining on the workpiece.

A method for checking at least one subregion of a component, in particular a component of a turbomachine, including at least the steps of a) providing a blank; b) producing at least the subregion from the blank by machining the blank using at least one tool and using at least one force sensor-to record at least one force curve of at least one force acting during machining on the at least one tool; c) checking whether there is at least one deviation-of the at least one force curve from at least one predetermined target curve-of the at least one force curve, the at least one deviation-characterizing at least one material defect-contained in an unmachined segment of the subregion. A checking device for checking at least a subregion of a component is also provided.

A tool holder having at least one sensor and a transmission device for transmitting the data captured by the sensor to a higher-level controller. The power supply to the sensor or the data module can be interrupted without contact when the tool holder is removed from the machining space of a machine tool. This prevents, for example, the power supply from being discharged while the tool holder is in a magazine outside the machine, and, for example, significantly increases the availability and service life of the tool holder before a battery is replaced, and/or before the accumulator and/or charge storage device is recharged.

Processing data during polygon processing is stored in the processing data storage unit 17. The position detection unit 18 detects a cut-start position A and a cut-end position B of a workpiece based on a change in the processing data. The position detection unit 18 detects a processing surface based on the cut-start position A and the cut-end position B.

A machine tool includes: an advancing/retracting drive device causing a main spindle to travel back and forth with respect to a milling shaft; a clamp device provided in the milling shaft and clamping the main spindle; a feeding control section controlling the advancing/retracting drive device and the clamp device; and a reaction force sensor detecting reaction force against the advancing/retracting drive device from the main spindle. The feeding control section performs: in an unclamped state where the main spindle is not clamped by the clamp device, advancing/retracting control by which the main spindle is moved to a designated feeding position by the advancing/retracting drive device; and in a clamped state where the main spindle is clamped by the clamp device, reaction force servo control by which the advancing/retracting drive device is operated in a direction in which the reaction force detected by the reaction force sensor becomes small.

A direct pose feedback (DPF) control method applied to a DPF controlled machine is provided. The DPF control method includes a pose compensation control in addition to the position feedback control. The pose compensation control includes an initiation step, a reference system step, an actual pose calculation step and a position compensation step. The sum of the primary driving value and the compensation driving value is output to the driver of each of the motors. The advantage of the DPF control method is that the existing real-time position control loop in the controller can remain unchanged, while the pose compensation control is added to eliminate tool pose error resulted from geometric errors in the machine. The DPF controlled machine uses a pose measuring mechanism to measure the actual pose of the tool and to compensate the tool pose error. Hence, the DPF controlled machine is free of geometric errors.

In a method for automated positioning of a blank in a processing machine provided with a housing and a spindle unit with an electric motor, a control unit for control and electrical supply of the processing machine, a computer producing processing programs for manufacturing workpieces, a workpiece holder, and an image recording unit that optically records image data of a blank received in the workpiece holder, a blank is fixed in the processing machine and the image recording unit produces an image of the blank. A division of the blank into an already processed region and into an unprocessed region based on the image data of the image is performed. A workpiece geometry to be produced is assigned to the unprocessed region of the blank, and a milling operation is performed on the unprocessed region. In a variant of the method, the image recording unit is separate from the processing unit.

The present invention is directed to an automatic impact inducing device for inducing an impact on an object wherein, in particular on a machine tool.

The invention relates to a machine tool (10) with (a) a tool head frame (16), (b) a tool head (18), (c) an axis unit (20) that is fixed to the tool head frame (16) and by means of which the tool head (18) can be positioned in a predefinable position, and (d) a movement device (28) for moving the tool head frame (16). The invention proposes that the movement device (28) comprises (e) a machine frame (12) and (f) a multipod drive (14) which (i) has at least three drive elements (24), (ii) is arranged in the flux of force between the machine frame (12) and the machine tool frame (16), and (iii) has at least two supporting elements (26), which can be brought into a locked state, (iv) wherein the multipod drive(14) is mechanically overdetermined by the supporting elements (26) and the drive elements (24).