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: 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: 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: 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: A method and a device for machining workpieces having an annular-shaped section that is to be provided with a split bore. The device includes: a fracture-splitting device for fracture-splitting the annular-shaped workpiece section and for creating fracture-split workpiece parts corresponding with one another with a split bore; an applicator device for a plain-bearing material for applying at least one closed annular plain-bearing layer to the inner periphery of the split bore of the fracture-split workpiece; and a fracture-splitting device for the plain-bearing layer for fracture-splitting the closed annular plain-bearing layer of the previously fracture-split workpiece.

Abstract: The aim of the invention is to provide a novel machining method, which is particularly suited for cracking disk-shaped or plate-shaped production parts, and to provide a device suited for carrying out this method. To this end, the invention provides that the respective production part is chucked on both sides of the rupture plane between chuck jaw pairs. Afterwards, the chuck jaw pairs are displaced relative to one another by the action of force so that the production part, along the rupture plane, is subjected to a tensile stress alternately on the upper side and underside.

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: The invention relates to a method and a device for machining workpieces comprising an annular-shaped section that is to be provided with a split bore. Said device comprises: a fracture-splitting device for fracture-splitting the annular-shaped workpiece section and for creating fracture-split workpiece parts corresponding with one another with a split bore; an applicator device for a plain-bearing material for applying at least one closed annular plain-bearing layer to the inner periphery of the split bore of the fracture-split workpiece; and fracture-splitting device for the plain-bearing layer for fracture-splitting the closed annular plain-bearing layer of the previously fracture-split workpiece.

Abstract: The invention relates to a method for fracture-separating a workpiece which comprises one or more ring-shaped workpiece sections that are aligned axially one behind the other. The method comprises the following steps: fixing the workpiece for the fracture-separation process; axially introducing at least one expansion device into at least one borehole which is formed in each ring-shaped workpiece section; creating at least one fracture notch in at least one borehole during and/or after the axial introduction of the expansion device; and expanding the expansion device for fracture-separating at least one ring-shaped workpiece section. The invention also relates to a device which is suitable for carrying out said method.

Abstract: The invention relates to a method for fracture-separating a workpiece which comprises one or more ring-shaped workpiece sections that are aligned axially one behind the other. The method comprises the following steps: fixing the workpiece for the fracture-separation process; axially introducing at least one expansion device into at least one borehole which is formed in each ring-shaped workpiece section; creating at least one fracture notch in at least one borehole during and/or after the axial introduction of the expansion device; and expanding the expansion device for fracture-separating at least one ring-shaped workpiece section. The invention also relates to a device which is suitable for carrying out said method.

Abstract: The invention relates to a method for fracture-separating a workpiece which comprises one or more ring-shaped workpiece sections that are aligned axially one behind the other. The method comprises the following steps: fixing the workpiece for the fracture-spectrum process; axially introducing at least one expansion device into at least one borehole which is formed in each ring-shaped workpiece section; creating at least one fracture notch in at least one borehole during and/or after the axial introduction of the expansion device; and expanding the expansion device for fracture-separating at least one ring-shaped workpiece section. The invention also relates to a device which is suitable for carrying out said method.

Abstract: The invention relates to a method for fracture-separating a workpiece which comprises one or more ring-shaped workpiece sections that are aligned axially one behind the other. The method comprises the following steps: fixing the workpiece for the fracture-separation process; axially introducing at least one expansion device into at least one borehole which is formed in each ring-shaped workpiece section; creating at least one fracture notch in at least one borehole during and/or after the axial introduction of the expansion device; and expanding the expansion device for fracture-separating at least one ring-shaped workpiece section. The invention also relates to a device which is suitable for carrying out said method.

Abstract: The invention relates to a device for fracture-separating a workpiece comprising several ring-shaped workpiece sections which are aligned axially one behind the other. The device comprises at least one expansion device which can be introduced axially into a borehole, formed in each ring-shaped workpiece section and has at least one expansion element that can be expanded in at least two axial expansion areas which lie at a distance from each other in the axial direction. The expansion device is provided with an integrated expansion control device which interacts with the expansion element for controlling a variable position and/or a variable expansion distance and/or a variable expansion period and/or a variable expansion sequence of at least the two expansion areas.

Abstract: An apparatus fracture-separates an annular piece, such as a connecting rod. The apparatus includes one stationary and one mobile expandable jaw for insertion into a bore hole in the annular piece. An expanding device separates the expandable jaws. The fracture behavior of the annular piece can be influenced. To this effect, the peripheral surface of the expandable jaws is so configured that the expandable jaws engage in the inner surface of the bore hole only via a region of reference surfaces or lines which is defined locally with precision.

Abstract: A device for separating the rod and cap of a connecting rod by breaking includes a fixed expansion mandrel half on a fixed device part a mobile expansion mandrel half on a device part which moves in the direction of expansion, and support elements for the rod and the cap. The device has a long service life without operational problems and can separate the rod and cap of a connecting rod from each other with a high degree of precision. To this end, the adjustable support elements are arranged on the fixed device part and the fixed support elements are arranged on the mobile device part.

Abstract: The invention relates to a device for fracture-separating a workpiece comprising several ring-shaped workpiece sections which are aligned axially one behind the other. The device comprises at least one expansion device which can be introduced axially into a borehole, formed in each ring-shaped workpiece section and has at least one expansion element that can be expanded in at least two axial expansion areas which lie at a distance from each other in the axial direction. The expansion device is provided with an integrated expansion control device which interacts with the expansion element for controlling a variable position and/or a variable expansion distance and/or a variable expansion period and/or a variable expansion sequence of at least the two expansion areas.