Abstract: It is proposed to provide a tool for the final machining of a valve seat and valve guide in a cylinder block of a combustion engine of a motor vehicle, said tool having a first section with at least one first blade for machining the valve seat and a second section with at least one second blade for machining the valve guide. The tool is characterized in that a separation site (13) is provided between the first section (5) and the second section (9), said separation site comprising a cone (15) and a conical recess (17) capable of receiving said cone.

Abstract: Proposed is a tool with a tool insert (53) for machining workpieces, comprising a collet (2), designed for manual interchange of tools and for securing in position the tool insert (53) in a tool spindle (89), comprising at least one channel, penetrating essentially in the axial direction of the tool (1), in particular the collet (2), for mediums, in the particular for coolants and/or flushing agents and/or lubricants. The tool is characterized in that a second channel (7, 7′), which is separated from a first channel (5) and which runs essentially in the axial direction, is provided for mediums, in particular for coolants and/or flushing agents and/or lubricants in the collet (2), and that different mediums can be conveyed in the channels (5) and (7; 7′); and that they empty into a mixing device (85).

Abstract: A tool for metal-cutting machining of a surface of an opening particularly of a valve seat in a cylinder head of an internal combustion engines. The tool has a cutter tip with at least one geometrically defined cutting edge. The cutter tip rests on two supporting regions in the tool which are arranged at an angle &agr;, and an angle-bisecting line runs essentially perpendicularly with respect to the active cutting edge which then is removing chips from the valve seat. A claw holds the cutting tip to the tool end. Coolant and lubricant are supplied through an outlet from the claw.

Abstract: A tool for machining bore surfaces having at least four cutting edges in respective pairs, one pair of cutting edges are arranged so as to be offset from one another as viewed in the axial direction of the tool, one pair may be diametrically opposed and another pair may be diametrically offset and not diametrically opposed.

Abstract: A tool for machining workpieces, having at least one cutting edge which is fastened to a main body of the tool. A respective deburring device removes the burrs produced by each cutting edge during machining. The deburring device is supported at the main body near the cutting edge and is movable by an actuatable piston between a retracted storage position in the tool body and an extended active position out of the tool body for deburring after surface machining.

Abstract: A tool for machining workpieces, having a parent body which can be expanded at least zonally, having at least one geometrically defined cutting edge projecting beyond a circumferential surface of the tool, and having a setting device influencing the radial distance of the cutting edge from the center axis of the tool. The setting device has a setting element, and an adjusting device which sets the degree of bending of the setting element. The setting element is inserted into the parent body of the tool in such a way that, when the bending of the setting element is varied, the radial distance of the cutting edge is varied.

Abstract: A tool for the precision machining of surfaces in workpieces comprising at least two cutter inserts in the periphery of the tool body and each having at least one defined cutting edge. The cutter inserts are of different materials at least in the region of the at least one cutting edge. Guide strips on the tool body periphery between the cutter inserts guide the tool body.

Abstract: A tool for machining workpieces by removing material, the tool can be coupled to a tool holder. A storage chamber provided in the tool and/or in the tool holder accommodates a lubricant and/or coolant. A slide is displaceably introduced into the chamber. An actuator provided with the switching unit and can be coupled to the slide to move the slide to expel lubricant and/or coolant from the chamber.

Abstract: The invention relates to a tool (1) for machine cutting of workpieces which has a ventilation hood (11) for removing the shavings which arise. The tool is characterized by the fact that the ventilation hood (11) includes a turbine (17).

Abstract: Proposed is a tool with a tool insert (53) for machining workpieces, comprising a collet (2), designed for manual interchange of tools and for securing in position the tool insert (53) in a tool spindle (89), comprising at least one channel, penetrating essentially in the axial direction the tool (1), in particular the collet (2), for mediums, in particular for coolants and/or flushing agents and/or lubricants. Said tool is characterized in that a second channel (7, 7′), which is separated from a first channel (5) and which runs essentially in the axial direction, is provided for mediums, in particular for coolants and/or flushing agents and/or lubricants in the collet (2), and that different mediums can be conveyed in the channels (5) and (7; 7′); and that they empty into a mixing device (85).

Abstract: A reamer for the fine machining of surfaces of drilled holes in metal workpieces has a reamer body and at that body has at least one main blade and at least one auxiliary blade, a chip surface adjoining the blades at one side and a chip deflector step limiting the chip surface. That deflector step falls away in the zone of the auxiliary blade, exhibiting an increasing distance from the auxiliary blade. The chip deflector step rises in the zone of the main blade, exhibiting a decreasing distance from the main blade. The blades, chip surface and deflector step may be on a cutter plate attached to the reamer body or be part of the body itself. The invention also concerns that cutter plate.

Abstract: A tool for machining bore surfaces having at least four cutting edges in respective pairs, one pair of cutting edges are arranged so as to be offset from one another as viewed in the axial direction of the tool, one pair may be diametrically opposed and another pair may be diametrically offset and not diametrically opposed.

Abstract: A tool for machining workpieces, having at least one cutting edge which is fastened to a main body of the tool. A respective deburring device removes the burrs produced by each cutting edge during machining. The deburring device is supported at the main body near the cutting edge and is movable by an actuatable piston between a retracted storage position in the tool body and an extended active position out of the tool body for deburring after surface machining.

Abstract: A junction is proposed between two tool parts, where a first tool part has a recess in hollow cone shape, and a second tool part has a cone-shaped projection that can be inserted into the recess. The junction is characterized by the fact that the recess (7) and the projection (33) have practically the identical angle of taper, that the projection (33) is structured to be practically non-resilient, and the wall (9) that surrounds the recess (7) of the first tool part (holder (1)), is structured to be resilient, and that the two tool parts (1, 31) are provided with flat surfaces (23, 37) that rest against one another when the two tool parts (1, 31) are connected. It is essential that the two tool parts are secured together in the assembled state of the junction (1), in an axial direction by means of a clamping device in such a way that the wall (9) of the first tool part (1) is expanded.

Abstract: A reamer for the fine machining of surfaces of drilled holes in metal workpieces has a reamer body and at that body has at least one main blade and at least one auxiliary blade, a chip surface adjoining the blades at one side and a chip deflector step limiting the chip surface. That deflector step falls away in the zone of the auxiliary blade, exhibiting an increasing distance from the auxiliary blade. The chip deflector step rises in the zone of the main blade, exhibiting a decreasing distance from the main blade. The blades, chip surface and deflector step may be on a cutter plate attached to the reamer body or be part of the body itself. The invention also concerns that cutter plate.

Abstract: A cutter insert for a tool for the finish machining by chip removal of bore surfaces in workpieces is proposed, the cutter insert being inserted in a recess introduced into the peripheral surface of the tool and being held by means of at least one clamping shoe which interacts by means of a clamping lip with at least one clamping surface of the cutter insert, which is distinguished by the fact that the cutter insert, which preferably has a substantially rectangular configuration, has a hypothetical center line (39) with which the clamping surface (21; 21′) encloses an acute angle (&agr;; &agr;′).

Abstract: The invention relates to a process for the control of the shifting process of a vehicle with electro-hydraulically actuatable friction elements for the shifting-over between different transmission stages in a vehicle with at least in addition a drive engine in which a current actual value is determined for at least one magnitude characterizing the shift process in each shifting process; the actual value is compared with an establishable and/or storable desired value; on deviation of the actual value from the desired value, the control pressure for the at least indirect influencing of the magnitude characterizing the switching process is adaptively changed by a determinable, calculatable or prescribable first correction value for the achieving of an optimal shifting behavior and the course of the altered magnitude is storable in each case as new characteristic curve of the desired values.

Abstract: A process is provided for operating a vehicle transmission with preferably electrohydraulically actuatable friction elements for shifting between different transmission steps, in a vehicle with at least one drive engine in which an actual value of at least one of the quantities characterizing the shift process is determined for each shift process, which actual value is compared with a theoretical value that can be established and stored. When the actual value deviates from the theoretical value, a regulated quantity for at least direct influencing is changed by a correction value that can be established. For each shift process, the time duration for the output of a gear shift signal up to the beginning of the synchronization process and/or the change of the drive rpm during this time period is determined as a first and/or second actual value of the quantity characterizing the process.

Abstract: A reamer for material-removing finishing machining of drilled surfaces in workpieces made of metal. The reamer has a blade insert and two guide bars associated with the blade insert. The first guide bar trails the blade insert, as seen in the direction of rotation of the reamer, by approximately 40.degree. and the second guide bar is arranged opposite the blade insert. The reamer has at least one additional blade insert that leads the second guide bar by approximately 40.degree..

Abstract: A method for the control of shifting processes in a vehicle transmission from an initial gear to the next higher target gear includes the steps of continuously determining the vehicle acceleration (a) and the driven rpm (n.sub.2) behind the vehicle transmission. A shifting process is triggered when the acceleration value (a) and the essentially simultaneously recorded driven rpm value (n.sub.2) fall on a shifting point which lies on a shifting characteristic (n.sub.2 (a)) in an acceleration-driven rpm diagram, where the shifting characteristic (n.sub.2 (a)) has a stepped course with at least two break points (a.sub.-- max; a.sub.-- min) and the slope of the shifting characteristic for acceleration values a.sub.-- min<a<a.sub.-- max is always smaller than or equal to the slope of the shifting characteristic for acceleration values a.ltoreq.a.sub.-- min or a.gtoreq.a.sub.-- max. In other words, the following applies:.linevert split.n.sub.2 (a.sub.1).linevert split..ltoreq..linevert split.n.sub.2 (a.sub.