Patents Assigned to Mapal Fabrik fur Prazisionswerkzeuge
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Patent number: 6872035Abstract: A machining tool for bores in thin-walled work pieces with at least one cutting plate is recommended that is characterized in that the at least one cutting plate (9, 9?, 9?; 9a, 9?a) is inserted into the circumference surface (15) of the tool (1) in such a way that two viewed in pivot direction—guide surfaces (31, 33) arranged at a distance to one another are present, which serve as a support of the tool (1) at the machining work piece surface.Type: GrantFiled: August 1, 2002Date of Patent: March 29, 2005Assignee: MAPAL Fabrik für Präzisionswerkzeuge Dr. Kress KGInventors: Dieter Kress, Rudolf Strom
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Patent number: 6808342Abstract: 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).Type: GrantFiled: June 14, 2002Date of Patent: October 26, 2004Assignee: Mapal, Fabrik für Präzisionswerkzeuge, Dr. Kress KGInventors: Dieter Kress, Friedrich Haberle
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Publication number: 20040009046Abstract: 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.Type: ApplicationFiled: June 23, 2003Publication date: January 15, 2004Applicant: MAPAL Fabrik fur Prazisionswerkzeuge Dr. Kress KGInventors: Dieter Kress, Friedrich Haberle
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Publication number: 20030217632Abstract: 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.Type: ApplicationFiled: May 22, 2003Publication date: November 27, 2003Applicant: MAPAL, Fabrik fur Prazisionswerkzeuge, Dr. Kress KGInventors: Dieter Kress, Friedrich Haberle
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Publication number: 20030113176Abstract: A tool for removing material or machining the end of a pipe. The tool having at least one and preferably two blade plates. Each blade plate includes a first cutter for machining an end surface of the pipe, a second cutter adjacent the first cutter for producing an internal chamfer in the pipe end and a third cutter adjacent the first cutter positioned for producing an external chamfer adjoining the end surface of the pipe end. Devices guide and permit movement of the cutters either radially or axially. The shaping of the cutter is disclosed.Type: ApplicationFiled: December 11, 2002Publication date: June 19, 2003Applicant: MAPAL Fabrik fur Prazisionswerkzeuge Dr. Kress KGInventor: Dieter Kress
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Publication number: 20030103821Abstract: 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.Type: ApplicationFiled: December 4, 2002Publication date: June 5, 2003Applicant: MAPAL Fabrik fur Prazisionswerkzeuge Dr. Kress KGInventors: Dieter Kress, Friedrich Haberle
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Patent number: 6543319Abstract: 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.Type: GrantFiled: September 22, 2000Date of Patent: April 8, 2003Assignee: Mapal Fabrik fur Prazisionswerkzeuge, Dr. Kress KGInventors: Dieter Kress, Friedrich Häberle
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Patent number: 6536997Abstract: A process is proposed for chip-removing machining of bore surfaces spaced at a distance from one another in axial direction, particularly of crankshaft and/or camshaft bearing bores, in which at least one of the two outermost bore surfaces is machined to produce a bearing surface for the machining of additional bore surfaces, and a boring bar is inserted through one of the machined outermost bores into at least one bore lying between the outermost bore surfaces.Type: GrantFiled: September 13, 2000Date of Patent: March 25, 2003Assignee: Mapal, Fabrik fur Prazisionswerkzeuge Dr. Kress KGInventor: Dieter Kress
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Patent number: 6503030Abstract: 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.Type: GrantFiled: June 4, 2001Date of Patent: January 7, 2003Assignee: Mapal, Fabrik für Präzisionswerkzeuge Dr. Kress KGInventors: Dieter Kress, Friedrich Häberle
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Publication number: 20020081168Abstract: A tool for the fine machining of workpieces having at least one cutter tip and at least one setting device acting on the cutter tip. The setting device comprises an adjusting element extending over a region of one side face of the cutter tip. A set screw displaces the adjusting element relative to the cutter tip at least one radially and axially with respect to the body. This moves the cutter tip at least one of radially and axially with respect to the body of the tool. A second adjusting element operably by a second setting device may be provided to act on a second side face of the cutter tip.Type: ApplicationFiled: December 5, 2001Publication date: June 27, 2002Applicant: MAPAL Fabrik fur prazisionswerkzeuge Dr. Kress KGInventor: Dieter Kress
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Publication number: 20020076283Abstract: 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.Type: ApplicationFiled: November 20, 2001Publication date: June 20, 2002Applicant: MAPAL Fabrik fur Prazisionswerkzeuge Dr. Kress KGInventors: Dieter Kress, Friedrich Haberle
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Publication number: 20020071730Abstract: 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.Type: ApplicationFiled: September 10, 2001Publication date: June 13, 2002Applicant: MAPAL Fabrik fur Prazisionswerkzeuge Dr. kress KGInventors: Dieter Kress, Friedrich Haberle
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Patent number: 6394710Abstract: A tool having a base body is proposed, on which at least one cutter holder, preferably a rocker-type cutter holder, is mounted such that it can be adjusted transversely with respect to the axis of the tool. The cutter holder carries a cutter and rests via a pressure piece on a control chamfer, which is provided on a control sleeve which is mounted in the base body such that it can be displaced axially in relation to the pressure force. The tool is defined in that the movement of the cutter holder (35) is controlled by at least one centrifugal force-actuated element (44, 66).Type: GrantFiled: January 5, 2000Date of Patent: May 28, 2002Assignee: Mapal Fabrik Fur Prazisionswerkzeuge Dr. Kress KGInventor: Artur Kurz
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Patent number: 6345937Abstract: A tool for cutting machining a workpiece, including a cutter plate supported on a holder for machining a surface and additionally comprising a tool projecting from the body of the tool. The cutter plate is supported on a holder which is in turn supported on a rotatable eccentric such that rotation of the eccentric moves the holder radially. A cooperating converting device converts axial movement of an actuating device into rotation of the eccentric through intermeshing gear elements. A second tool, e.g., a reamer, is moved by a second push/pull rod axially with respect to the body of the tool and into the workpiece, and the second tool is supported on the axis of the main body.Type: GrantFiled: December 22, 1999Date of Patent: February 12, 2002Assignee: Mapal Fabrik für PräzisionswerkzeugeInventors: Dieter Kress, Herbert Jäger
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Publication number: 20020012574Abstract: 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.Type: ApplicationFiled: June 4, 2001Publication date: January 31, 2002Applicant: MAPAL Fabrik fur Prazisionswerkzeuge Dr. Kress KGInventors: Dieter Kress, Friedrich Haberle
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Patent number: 6224301Abstract: 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;′).Type: GrantFiled: June 9, 1999Date of Patent: May 1, 2001Assignee: Mapal Fabrik für Präzisionswerkzeuge, Dr. Kress KGInventors: Dieter Kress, Friedrich Häberle
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Patent number: 5915889Abstract: A polygon shaped cutting tip for a metal workpiece boring tool, the cutting tip having linear side edges lying in a common plane and adjacent side edges which pass tangentially into rounded corner regions. Parts of the corner regions and of the side edges serve as the primary and secondary cutting edges of the tip. A chip breaker edge is arranged at a distance in from the side edges. A chip breaker surface extends from the side edge to the chip breaker edge. The chip breaker edge includes linear sections corresponding to the linear side edges of the tip and has curved sections which correspond to the curved regions of the side edges. The arc of curvature of both the curved regions and the curved sections is the same although the arcuate length of the curved sections is greater. The chip breaker surface extends from the side edges of the corner regions inward toward and downward into the tip at an acute angle where it intersects the chip breaker edges.Type: GrantFiled: July 11, 1997Date of Patent: June 29, 1999Assignee: Mapal Fabrik fur Prazisionswerkzeuge Dr. Kress KGInventors: Dieter Kress, Friedrich Haberle
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Patent number: 5904452Abstract: A chip removal tool for finishing the radial surface of a bore and having a cylindrical bit for mounting a cutting element and a deflector positioned adjacent the cutting element to deflect chips cut from the bore and urging the chips into a flow of fluid from respective cooling and lubricating sources.Type: GrantFiled: February 6, 1997Date of Patent: May 18, 1999Assignee: Mapal Fabrik Fur PrazisionswerkzeugeInventor: Dieter Kress
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Patent number: 5865573Abstract: A boring bar for machining of borehole surfaces which are arranged axially spaced from each other, in particular crank-shaft and/or cam-shaft bearing holes. The bar has at least one, and preferably a plurality, of cutting devices and at least one, and preferably a plurality of, guide devices each associated with a cutting device. A fluid pressure actuating device acts on both the cutting devices and the guide devices. The actuating device effects a setting movement of each of those devices against a respective defined stop by application of fluid pressure through the boring bar to the cutting devices and the guide devices.Type: GrantFiled: October 30, 1996Date of Patent: February 2, 1999Assignee: Mapal Fabrik fur PrazisionswerkzeugeInventor: Dieter Kress
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Patent number: 5857813Abstract: A boring tool for the fine finishing of surfaces of holes having at least one cutting bit and at least one guide ledge which are introduced and fixed in place in grooves arranged in the circumferential surface of the base body of the boring tool, characterized by the fact that a setting device is provided which is positively coupled with at least two cutting bits associated with each other; that the cutting bits are arranged displaceable by means of the setting device in the base body with respect to the circumferential surface; that the association of the cutting bits consists in that they are displaceable in opposite directions, with respect to the axis of rotation or center line of the boring tool; and that the setting device in each case displaces one cutting bit into a working position and the other cutting bit into a position of rest.Type: GrantFiled: March 26, 1997Date of Patent: January 12, 1999Assignee: Mapal, Fabrik fur Prazisionswerkzeuge Dr. Kress KGInventors: Dieter Kress, Friedrich Haberle