The invention relates to a system and a method for controlling an ultrasound generator of a machine tool for generating ultrasound for machining a workpiece. According to the invention, a determined phase shift of the ultrasound is analyzed as a function of frequency and, based on the analysis, a regulation algorithm for controlling the frequency of the ultrasound generated by the ultrasound generator is determined.

A clamping device includes a clamping chuck and a clamping element, which can be clamped thereto. The clamping chuck has a receiving opening for the clamping element and clamping members for clamping the clamping element in the receiving opening. The clamping element is elongated, while the clamping chuck is provided with an elongated receiving opening for the clamping element. A resiliently flexible centering element, which aligns the clamping element in response to the insertion into the receiving opening at right angles to the longitudinal axis of the receiving opening, is arranged on the clamping chuck in the insertion area of the receiving opening. Such a clamping device is suitable in clamping systems by means of which large to very large workpiece carriers can be clamped in the work area of a machine tool in a repeatably accurate manner.

A machine tool including a base, a slider that is supported to be linearly movable in a direction with respect to the base, a ball screw configured to cause the slider to linearly move with respect to the base, and a chain-like carrier used for wiring a movable wire body between the base and the slider. The carrier is disposed between the base and the slider and curved in a U-shape around an axis extending in a direction in which the base and the slider are apart from each other, one end of the carrier is fixed to the slider and an other end of the carrier is fixed to the base, and a curved portion of the carrier, which is curved in the U-shape, is disposed at a position where the curved portion crosses an extension line of an axis of the ball screw.

A holding apparatus/workpiece adapter apparatus arrangement includes a holding apparatus and a workpiece adapter apparatus. The workpiece adapter apparatus is positioned and fixed, with a workpiece fastened thereto, by the holding apparatus. The holding apparatus has partially cylindrical positioning elements, which engage in an associated cylindrical positioning recess and a positioning slot and position the workpiece adapter apparatus in an x and a y direction. The workpiece adapter apparatus bears by mating contact surfaces against contact surfaces of the holding apparatus and is clamped by linearly displaceable clamping elements and pressed against the contact surfaces, and thus positioned in a z direction. For clamping, clamping surfaces of the clamping elements bear against mating clamping surfaces of the workpiece adapter apparatus.

A composite member is manufactured by a manufacturing method including adding, on a surface of a base member composed of a first material, a second material different from the first material, using additive manufacturing employing directed energy deposition as an additive manufacturing process. The manufacturing method is performed by placing the base member in a machining area of a machine tool configured to perform subtractive machining. Accordingly, a composite member can be obtained that is manufactured through additive manufacturing and that is in a state in which the composite member can be promptly machined.

A method for production of a motor vehicle that includes providing a device for positioning motor vehicle parts that comprises a base frame having at least one base module arranged thereon, and at least one exchangeable docking plate configured for connection to the base module, the at least one exchangeable docking plate having arranged thereon a plurality of receivers configured to hold the motor vehicle parts, transferring the at least one exchangeable docking plate to the base frame, connecting, at a configuration station, the at least one exchangeable docking plate to the base module, fitting, at a work station, a motor vehicle part to the at least one exchangeable docking plate, such that the motor vehicle part is held by the receivers, and equipping the motor vehicle part with add-on parts.

A rotary indexing table assembly includes an axis of rotation, a rotation element and a receiving assembly. The rotation element is rotatable about the axis of rotation and has a centering opening coaxial with the axis of rotation. The receiving assembly has a spring system and a pin assembly. The pin assembly has a pin body, movable along the axis of rotation by the spring system and settable in a set-up state or a blocking state. In the set-up state, the rotation element is releasably connected to the receiving assembly, and in the blocking state, the rotation element is fixedly connected to the receiving assembly.

A support extending about an axis has an axial cavity, adapted to receive a pin fixed to the workpiece, and has retention means for retaining the pin axially.

Interposed between the pin and the workpiece is a centering ring which is accommodated in the axial cavity in such a way that it can slide on a plane that is perpendicular to the axis of the pin with respect to the support.

A rotary union includes a housing forming a bore and a piston bore having an open end and disposed at a radially offset distance with respect to the bore. The piston bore is fluidly isolated from the bore. A seal carrier is slidably disposed within the bore, and includes an actuation arm extending radially outwardly relative to the bore such that it overlaps the piston bore. A piston slidably disposed in the piston bore is extendible to releasably abut the actuation arm and urge the seal carrier to displace relative to the bore when the piston displaces relative to the piston bore.

In a device for swivelling, turning and changing pallets on a horizontal machining center, with swivel arms that can be synchronously swiveled about a swivel axis, each of them having a pallet carrier turnable around a turning axis, for docking and undocking of at least one pallet, which can be connected to a power supply that also provides a vacuum for fixing the workpiece; on the pallet carrier, a power supply interface connected with the power supply via the swivel arm is provided which can be moved along.