Patents by Inventor Jürgen Kreschel
Jürgen Kreschel has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11738399Abstract: The invention relates to a method for machining a toothing (2) having an axis of rotation (C), in which a machining tool (4), which is rotationally driven about its axis of rotation (B), removes material from the toothing while executing a relative motion between the machining tool and toothing to generate a flank geometry of the toothing, which has been predefined over the full width of the toothing, in a machining operation, wherein the predefined flank geometry matches a motion control that defines a motion path of the tool center with respect to the toothing axis of rotation, said motion control having a defined, non-vanishing axial advancement with a defined advancing motion between machining tool and toothing, wherein in a first machining process, the relative motion is only executed for generating a part, more particularly a significant part (5), of the flank geometry according to this motion control, while a further part, more particularly the remaining part (6), of the flank geometry is generated inType: GrantFiled: June 20, 2018Date of Patent: August 29, 2023Assignee: GLEASON-PFAUTER MASCHINENFABRIK GMBHInventor: Jürgen Kreschel
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Publication number: 20230264280Abstract: the invention relates to a method for machining or producing a toothed portion (2) on a workpiece by means of a tool toothed portion (4), wherein the tool toothed portion is brought into a first machining engagement with the rotating workpiece toothed portion clamped in a clamped setup, such that there is rolling coupling which assigns the teeth of the tool toothed portion to the tooth spaces of the workpiece toothed portion, and wherein the tool toothed portion is brought into a second machining engagement phase-shifted by at least one fourth of the pitch in comparison with the rolling coupling of the first machining engagement at the machining distance of deepest advancement, said second machining engagement having increased machining distance from the workpiece toothed portion clamped in the same clamped setup of the first machining engagement in comparison with the deepest advancement of the first machining engagement.Type: ApplicationFiled: July 22, 2021Publication date: August 24, 2023Inventor: Jürgen Kreschel
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Publication number: 20230158591Abstract: The invention relates to a method for machining a tooth edge formed between a tooth flank and an end face (2b) of the workpiece tooth arrangement (3), by means of a tool tooth arrangement (13), in which method the tooth arrangements (3, 13) rotate about their respective tooth arrangement rotational axes (C, B) in mutual rolling coupling, wherein the two tooth arrangement rotational axes (C, B) are substantially parallel to each other and the machining is carried out over a plurality of workpiece rotations, and wherein a first relative movement (Z) between the workpiece tooth arrangement (3) and the tool tooth arrangement (13), parallel to the workpiece rotational axis, is carried out and the position of the envelope (28) of the tool tooth rolling positions (29i) is shifted relative to the engagement position of said envelope with the tooth flank of the workpiece tooth arrangement in the plane (X-Y) orthogonal to the workpiece rotational axis (C), transversely to the profile of the workpiece tooth arrangement,Type: ApplicationFiled: March 5, 2021Publication date: May 25, 2023Inventor: Jürgen Kreschel
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Patent number: 11654497Abstract: A method for machining a toothing of a workpiece held in a clamping, in which a toothing tool that rotates about its rotational axis and comprises cutting edges is brought into rolling chip-removing machining engagement with the toothing that rotates about its rotational axis, in order to produce a predetermined tooth flank end geometry in one or more machining passes, wherein during the machining pass which produces the tooth flank end geometry, monitoring responsive to the event of a removed chip being pressed into a machined tooth flank of the toothing by means of the rolling machining process is carried out and, if the monitoring responds, an additional toothing machining process that removes the material protrusion on top of the tooth flank end geometry formed by the chip that was pressed in is implemented automatically, which process is carried out in the same clamping of the workpiece and by means of the toothing tool.Type: GrantFiled: October 19, 2018Date of Patent: May 23, 2023Assignee: GLEASON-PFAUTER MASCHINENFABRIK GMBHInventor: Jürgen Kreschel
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Publication number: 20220331893Abstract: The invention relates to a method for producing or machining, by cutting, an identical set of teeth on each of a plurality of workpieces, in particular at least 4 workpieces, of a workpiece batch on one or more gear-cutting machines (100) having a gear-cutting tool (S), which has a set of teeth having rake faces (5) and having an axis of rotation (B1), in rolling machining engagement, in which method, in the event that a deviation of a set of teeth from the tooth profile sought for said set of teeth is detected or expected, a countermeasure that counteracts said deviation is determined and the production/machining of additional workpieces of said workpiece batch is continued using the countermeasure, the countermeasure being, at least in part, a change in the position of the rake faces relative to the axis of rotation of the tool, which change is brought about by means of grinding performed on the gear-cutting machine or at a grinding machine (140) that belongs to the machine group of the gear-cutting machineType: ApplicationFiled: September 23, 2020Publication date: October 20, 2022Inventor: Jürgen Kreschel
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Publication number: 20220168831Abstract: The invention relates to a method for producing or machining a toothing (2) on a workpiece (3), in which method the workpiece, which is rotationally driven about its axis of rotation (C), is brought into rolling machining engagement with tool toothing (5) rotating about an axis of rotation (C2) which is, in particular, at a non-null crossed-axes angle to the axis of rotation of the workpiece, wherein the machining operation is automatically monitored, using sensors to record same automatically, already at the machine operation stage for a recurring irregularity originating from tool wear (52), in particular higher wear of at least one tool tooth (51) compared to other tool teeth.Type: ApplicationFiled: March 27, 2020Publication date: June 2, 2022Inventor: Jürgen Kreschel
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Publication number: 20210178499Abstract: The invention relates to a method for machining toothings, which method uses a disk-shaped, toothed tool that is rotationally driven about its axis of rotation and has a geometrically defined cutting edge. The tool teeth are produced from a base material, are provided, at least on the tooth flanks, with a coating that improves wear resistance, and have machining surfaces facing an end face of the tool, said machining surfaces being re-ground from time to time when the tool is reconditioned, wherein after at least one regrinding, use of the tool is resumed and continued with regions of the machining surfaces formed along the cutting edges from the base material.Type: ApplicationFiled: November 20, 2018Publication date: June 17, 2021Inventors: Edgar Weppelmann, Jürgen Kreschel
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Publication number: 20210162527Abstract: The invention relates to a method for machining a toothing (2) having an axis of rotation (C), in which a machining tool (4), which is rotationally driven about its axis of rotation (B), removes material from the toothing while executing a relative motion between the machining tool and toothing to generate a flank geometry of the toothing, which has been predefined over the full width of the toothing, in a machining operation, wherein the predefined flank geometry matches a motion control that defines a motion path of the tool center with respect to the toothing axis of rotation, said motion control having a defined, non-vanishing axial advancement with a defined advancing motion between machining tool and toothing, wherein in a first machining process, the relative motion is only executed for generating a part, more particularly a significant part (5), of the flank geometry according to this motion control, while a further part, more particularly the remaining part (6), of the flank geometry is generated inType: ApplicationFiled: June 20, 2018Publication date: June 3, 2021Inventor: Jürgen Kreschel
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Publication number: 20200361012Abstract: The invention relates to a method for machining a toothing of a workpiece held in a clamping, in which method a toothing tool that rotates about its rotational axis and comprises cutting edges is brought into in particular rolling chip-removing machining engagement with the toothing that in particular rotates about its rotational axis, in order to produce a predetermined tooth flank end geometry in one or more machining passes, wherein during the machining pass which produces the tooth flank end geometry, monitoring responsive to the event of a removed chip being pressed into a machined tooth flank of the toothing by means of the in particular rolling machining process is carried out and, if the monitoring responds, an additional toothing machining process that removes the material protrusion on top of the tooth flank end geometry formed by the chip that was pressed in during the event which occurred is implemented in particular automatically, which process is carried out in particular in the same clamping ofType: ApplicationFiled: October 19, 2018Publication date: November 19, 2020Inventor: Jürgen Kreschel
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Patent number: 10583507Abstract: The invention relates to a method for machining a workpiece, wherein, in particular in the skiving process, a toothing is produced on the workpiece in a first machining operation, in which a toothed cutting wheel, which rotates about the axis of rotation thereof and, on a first end face, comprises cutting edges on the toothing thereof, is coupled in a rolling manner to the workpiece which rotates about the axis of rotation thereof, and a cutting movement of the cutting edges, which has directional components in parallel with the workpiece axis, ends at an axial side of the workpiece toothing, the cutting edges of the cutting wheel forming a first operating region which can be positioned with respect to the workpiece by means of movement axes, and in which, in a second machining operation using a second operating region, the workpiece is machined on the side of the workpiece toothing at which the movement ends, wherein the second operating region can be positioned with respect to the workpiece by means of theType: GrantFiled: May 21, 2015Date of Patent: March 10, 2020Assignee: GLEASON-PFAUTER MASCHINENFABRIK GMBHInventors: Edgar Weppelmann, Juergen Kreschel, Steffen Fischer
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Patent number: 9878383Abstract: The invention concerns a method for the machining of the tooth edges between an axially facing surface and the tooth flanks of a gear with a machining tool that has a toothed contour. For the material-removing cutting operation, the machining tool, rotating about the axis of its toothed contour, is brought into rolling engagement with the toothed workpiece under a crossing angle different from zero between the rotary axes of the machining tool and the toothed workpiece.Type: GrantFiled: July 15, 2014Date of Patent: January 30, 2018Assignee: GLEASON-PFAUTER MASCHINENFABRIK GMBHInventors: Kurt Kleinbach, Juergen Kreschel, Matthias Philippin, Edgar Weppelmann
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Publication number: 20170072485Abstract: The invention relates to a method for machining a workpiece, wherein, in particular in the skiving process, a toothing is produced on the workpiece in a first machining operation, in which a toothed cutting wheel, which rotates about the axis of rotation thereof and, on a first end face, comprises cutting edges on the toothing thereof, is coupled in a rolling manner to the workpiece which rotates about the axis of rotation thereof, and a cutting movement of the cutting edges, which has directional components in parallel with the workpiece axis, ends at an axial side of the workpiece toothing, the cutting edges of the cutting wheel forming a first operating region which can be positioned with respect to the workpiece by means of movement axes, and in which, in a second machining operation using a second operating region, the workpiece is machined on the side of the workpiece toothing at which the movement ends, wherein the second operating region can be positioned with respect to the workpiece by means of theType: ApplicationFiled: May 21, 2015Publication date: March 16, 2017Inventors: Edgar Weppelmann, Juergen Kreschel, Steffen Fischer
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Patent number: 9575483Abstract: A profile gauge that embodies a measurement geometry for a tool that has a toothed profile designed in particular for the skiving of toothed work pieces, wherein the profile gauge serves to determine at least one measurement quantity which can be used for a machining process, specifically a skiving process, that is to be performed with the tool and wherein, in a phase of said process, the toothed profile of the work piece that is to be generated is formed by a meshing engagement with the teeth of the tool, wherein the profile gauge is distinguished by having a toothed profile section with which, for determining the measurement quantity, the teeth of the tool are brought into a meshing engagement that corresponds to the tooth engagement between the tool and the work piece during the profile-forming phase. The invention further concerns a measuring device and a measurement method.Type: GrantFiled: March 17, 2014Date of Patent: February 21, 2017Assignee: Gleason-Pfauter Maschinenfabrik GmbHInventors: Juergen Kreschel, Edgar Weppelmann
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Publication number: 20160158861Abstract: The invention concerns a method for the machining of the tooth edges between an axially facing surface and the tooth flanks of a gear with a machining tool that has a toothed contour. For the material-removing cutting operation, the machining tool, rotating about the axis of its toothed contour, is brought into rolling engagement with the toothed workpiece under a crossing angle different from zero between the rotary axes of the machining tool and the toothed workpiece.Type: ApplicationFiled: July 15, 2014Publication date: June 9, 2016Inventors: Kurt Kleinbach, Juergen Kreschel, Matthias Philippin, Edgar Weppelmann
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Patent number: 9144854Abstract: The invention concerns a method of generating gear teeth, wherein a workpiece which is to receive a toothed profile and a cutting tool are advanced toward each other in a rolling feed motion until each tooth flank of the gear profile has been generated after several passes of the tool, wherein in each pass a cut surface containing at least one flank cut is generated on the workpiece, wherein an auxiliary motion is superimposed on the rolling motion, which has the effect that the flank cuts generated in at least two immediately consecutive passes will be connected to each other. In addition, the invention also concerns a gear-cutting machine with the requisite control features to perform the method.Type: GrantFiled: May 30, 2013Date of Patent: September 29, 2015Assignee: GLEASON-PFAUTER MASCHINENFABRIK GMBHInventors: Juergen Kreschel, Claus Kobialka
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Publication number: 20150081083Abstract: A profile gauge that embodies a measurement geometry for a tool that has a toothed profile designed in particular for the skiving of toothed work pieces, wherein the profile gauge serves to determine at least one measurement quantity which can be used for a machining process, specifically a skiving process, that is to be performed with the tool and wherein, in a phase of said process, the toothed profile of the work piece that is to be generated is formed by a meshing engagement with the teeth of the tool, wherein the profile gauge is distinguished by having a toothed profile section with which, for determining the measurement quantity, the teeth of the tool are brought into a meshing engagement that corresponds to the tooth engagement between the tool and the work piece during the profile-forming phase. The invention further concerns a measuring device and a measurement method.Type: ApplicationFiled: March 17, 2014Publication date: March 19, 2015Applicant: GLEASON-PFAUTER MASCHINENFABRIK GMBHInventors: Juergen Kreschel, Edgar Weppelmann
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Publication number: 20130336739Abstract: The invention concerns a method of generating gear teeth, wherein a workpiece which is to receive a toothed profile and a cutting tool are advanced toward each other in a rolling feed motion until each tooth flank of the gear profile has been generated after several passes of the tool, wherein in each pass a cut surface containing at least one flank cut is generated on the workpiece, wherein an auxiliary motion is superimposed on the rolling motion, which has the effect that the flank cuts generated in at least two immediately consecutive passes will be connected to each other. In addition, the invention also concerns a gear-cutting machine with the requisite control features to perform the method.Type: ApplicationFiled: May 30, 2013Publication date: December 19, 2013Applicant: GLEASON-PFAUTER MASCHINENFABRIK GMBHInventors: Juergen Kreschel, Claus Kobialka