Abstract: A machine tool for machining workpieces, wherein the machine tool has a first spindle assembly and at least one second spindle assembly each having at least two working spindles which are arranged in a common spindle housing and on which in each case a machining tool for workpiece machining is arrangeable, wherein the machine tool has a workpiece holding device for holding workpieces for the purpose of workpiece machining by way of the machining tools, wherein the machine tool has a guide arrangement for the relative positioning of the workpiece holding device holding the workpieces and the first and the at least one second spindle assembly for workpiece machining.

Abstract: A machine tool for machining workpieces, wherein the machine tool has at least one first spindle assembly with at least one working spindle on which a machining tool for workpiece machining is arrangeable, wherein the machine tool has a workpiece holding device for holding workpieces for the purpose of workpiece machining by way of the machining tool, wherein the machine tool has a guide arrangement for the relative positioning of the workpiece holding device holding the workpieces and the first spindle assembly for workpiece machining, wherein the guide arrangement comprises a workpiece-holder guide for guiding the workpiece holding device so as to position a workpiece holder holding the workpieces relative to the first spindle assembly.

Abstract: A device for breaking separation of at least one bearing cap of a corresponding thrust block in the bearing assembly of engine cases provided with bearing bores which are arranged in-line, in particular crankshaft cases for alternative piston engines is provided. The device includes an extension mandrel comprising two half-mandrels insertable into at least one of the bearing bores. The half-mandrels being distant from each other in order to produce breaking separation force between the thrust block and the bearing cap. The bearing cap is clamped in such a way that it is non-rotatable except in a limited manner in the direction of breaking separation between a corresponding half-mandrel and a fixing device.

Abstract: A machine tool for chip removing machining operations on workpieces using tools comprises a tool checking device for checking a tool of the machine tool as regards damage or fracture by means of a sensor. There is a provision on the machine tool such that sensor is a contact-free sensor arranged on a movably disposed sensor holder, that the tool checking device possesses a drive for the sensor holder to shift the sensor toward and away from the tool to be checked and that the machine tool or the tool checking device possesses a control module for the control of the drive to perform a measuring excursion so that the drive shifts the sensor for a measurement of a tool to be checked for a measurement toward the tool and after the measurement shifts it away from the tool.

Abstract: The invention relates to a method for joining two components (10, 12) of a unit (1), especially a fractured unit, to be screwed together. Said method comprises the following steps: the components are first joined by a joining device (2), especially a joining press (22), the components are separated, and the components are then rejoined by being screwed together.

Abstract: The invention relates to a method and a device for producing a split bearing arrangement, in which a top bearing part (6) is separated in several machining stations from a basic bearing part (5) that is monolithically joined thereto via a severing breaking process on a predefined plane of breakage (10) by applying a certain force, whereupon the two parts are joined back together by means of a screw connection comprising at least two screws. The basic bearing part (5) and the top bearing part (6) are fixed on an adapter device (1) that is conveyed from one machining station to another while the top bearing part is retained at least during some processes in the machining stations via a retractable auxiliary support (13) which is disposed on the adapter device and catches the top bearing part outside the area of the screw connection.

Abstract: In a method and an engagement sensor device for engagement measurement for a machine tool for processing workpieces using tools or a laser the machine tool possesses a clamping device with a clamping face for clamping an object, in particular a tool or a workpiece and the engagement sensor device is provided for the measurement or engagement of a face of clamped object at the clamping face or any gap between the face of the clamped object and the clamping face. The sensor device comprises at least one engagement sensor, arranged to the side of the clamping face, with a measurement range aligned in the direction of the gap or of the clamping face for the detection of an electrical or magnetic stimulation field, such field extending between the face of clamped object and the clamping face and being able to be influenced by any gap, the measurement range extending essentially along the clamping face in accordance with a depth direction of any gap or parallel to the clamping face.

Abstract: Fracture separation module for insertion into a machine tool, comprising: A drive spindle (10) with a receiving section for clamping the module into a spindle of a machine tool, a fracturing part (20) for the fracture separation of a workpiece, a conversion unit (30) which is connected both to the drive spindle (10) and to the fracturing part (20) and converts a rotational movement of the drive spindle (10) into a linear movement of the fracturing part (20), which movement is suitable for fracturing the workpiece, and a method for the fracture separation of a workpiece, wherein the fracture separation step takes place by means of the fracture separation module of the present invention.

Abstract: The invention relates to a work holder device designed for holding work for machining by a machine tool and to a machine tool equipped with such a holder device. The work holder device includes a carrier fixture and at least one transferable jig adapted to be attached to the carrier fixture, such transferable jig having a work trap for receiving and holding the work, the at least one transferable jig being able to be inserted on a linear guide arrangement like a drawer into a trap of the transferable jig in an insertion plane and being able to be fixed in the trap in a fixing position.

Abstract: A multi-spindle machining center for the chip forming processing of workpieces comprises a spindle group having at least two spindles arranged in a spindle row to mount a chip forming tool, and a workpiece support, on which at least two workpiece holders, correlated with the geometrical arrangement of the spindles, for holding workpieces for a simultaneous processing by means of the spindles, are arranged, the workpiece support having a beam-like longitudinal support member, bearing the workpiece supports, which at its longitudinal terminal regions is movably held on a respective workpiece support bearing structure and the spindles are guided for a movement toward the workpiece support in a first axial direction on a spindle linear guide arrangement.

Abstract: A multi-spindle machining center for the chip forming processing of workpieces comprises a spindle group having at least two spindles arranged in a spindle row adjacent to each other to mount a chip forming tool, and a workpiece support, on which at least two workpiece holders, correlated with the geometrical arrangement of the spindles, for holding workpieces for a simultaneous processing by means of the spindles, are arranged, the workpiece support having a beam-like longitudinal support member bearing the workpiece supports, and the spindles are guided for a movement toward the workpiece support in a first axial direction on a spindle linear guide arrangement.

Abstract: A clamping device for a machine tool for processing workpieces, comprises a clamping body having at least one clamping face for clamping an object to be clamped, in particular a tool or a workpiece, and a sensor arrangement for measurement of a planar setting of a face of the object to be clamped on at the least one clamping face or a possible gap between the face of the object to be clamped and the at least one clamping face. In the case of the clamping device for the machine tool there is a provision such that the sensor arrangement has at one planar setting sensor for the detection of a distance between the at least one planar setting sensor and a portion of the object clamped in the clamping device, projecting laterally in front of the at least one clamping face, and that the at least one planar setting sensor is arranged on a portion, which is set back in relation to the at least one clamping face, of the clamping body.

Abstract: The invention relates to a device for applying a working force to a workpiece, using a working cylinder. The device includes a working piston, an actuation chamber that can be supplied with a hydraulic medium, a recirculation chamber that can be supplied with a gaseous medium and a force transmission device that co-operates with the working piston. This allows a transmission or an application of the working force to a workpiece that is as rapid as possible with a technical construction that is as simple as possible.

Abstract: A processing machine arrangement includes a processing machine with at least one tool spindle and with a tool magazine for offering tools to the processing machine for the machining of a workpiece. A method for the operation of such a processing machine arrangement is also provided. There is a robot with a multi-joint robot arm for providing the tool magazine with tools from a tool storage supply means and for removing spent tools from the tool magazine, and that the tool magazine includes a tool holder portion which is alternatingly able to be shifted, and more especially pivoted, into a robot access space for a tool change of the robot and into a spindle access space for a tool change on the tool spindle, with the tool holder portion having a tool holder for holding a tool.

Abstract: The invention relates to a device for fracture splitting of an annular section (12) of a workpiece, with a housing (34) for mounting the workpiece (10), during the machining, a laser device (30), for the formation of two diametrically opposed nicks in an inner circumferential surface (16) of the annular section (12) by fusion of the material using laser energy and a fracture splitting device (32), for the fracture splitting of the annular section (12) of the workpiece (10) into two pieces along a fracturing plane (5) given by the nicks, characterised in that the laser device (30) and the fracture splitting device (32) form a single machining station and are embodied such that the formation of the nicks and fracture splitting of the workpiece (10) are carried out from opposing sides of the workpiece (10).

Abstract: The invention relates to a method and a device for producing a split bearing arrangement, in which a top bearing part (6) is separated in several machining stations from a basic bearing part (5) that is monolithically joined thereto via a severing breaking process on a predefined plane of breakage (10) by applying a certain force, whereupon the two parts are joined back together by means of a screw connection comprising at least two screws. The basic bearing part (5) and the top bearing part (6) are fixed on an adapter device (1) that is conveyed from one machining station to another while the top bearing part is retained at least during some processes in the machining stations via a retractable auxiliary support (13) which is disposed on the adapter device and catches the top bearing part outside the area of the screw connection.

Abstract: The invention relates to a device for machining workpieces, especially for chip removing machining. The device includes a spindle which is mounted on a first end of a pivoting arm in such a way that it can be linearly displaced in a direction parallel to the rotation axis of the spindle, and a console on which the pivoting arm is mounted by its second end in such a way that it can rotate about an axis parallel to the rotation axis of the spindle. The console can be displaced in a direction which is perpendicular to the displacement direction of the spindle in all of the pivoting positions of the pivoting arm.

Abstract: The invention relates to a machine tool, in particular to cutting machine tools. The inventive machine tool comprises at least two machining modules provided with at least one spindle with a horizontally oriented axis and at least one clamping module having a tooling surface for at least one part which is horizontally oriented and rotatable around a vertical axis. The clamping module includes structure for a rigid coupling thereof to the machining module. One or several clamping modules and/or machining modules are provided with at least one fictive midplane which is parallel with respect to the spindle axis. The machine tool also includes at least one pallet changing module which is connected to the clamping module asymmetrically with respect to the midplane.

Abstract: A machine tool for machining workpieces includes a spindle group with at least two spindle arrangements placed alongside each other, each spindle arrangement possessing a spindle to receive a machining tool. Each spindle arrangement is guided on a guide arrangement in the direction of the axis of the respective spindle in a longitudinally sliding manner on a holding device or frame for the spindle group, each guide arrangement possesses an external clearance which is larger than the width of the respective spindle and that the guide arrangements of two directly adjacent spindle arrangements of the spindle group are arranged on mutually different sides of the holding device or frame so that the spindle axes are arranged closer together than in the case of an arrangement of the guide arrangements on the same side of the holding device or frame.

Abstract: The invention relates to a method for breaking separation of at least one bearing cap of a corresponding thrust block in the bearing assembly of engine cases provided with bearing bores which are arranged in-line, in particular crankshaft cases for alternative piston engines. The inventive method consists in introducing an extension mandrel comprising two half-mandrels into at least one bearing hole, said half-mandrels being distant from each other in order to produce breaking separation force between the thrust block and the bearing cap. Said invention is characterized in that the bearing cap is clamped in such a way that it is non-rotatable except in a limited manner in the direction of breaking separation between a corresponding half-mandrel and a fixing device.