Patents Assigned to The Gleason Works
  • Machine tool
    Patent number: 7886415
    Abstract: In a machine tool with at least two axes of movement (2, 7) defining, respectively, the mobility of a first function-supporting unit (1) and of a second function-supporting unit (5), only the first function-supporting unit (1) is provided with its own servo drive, while the second function-supporting unit (5) is driven by the movement of the first function-supporting unit (1) through a coupler unit (13) that can be switched between an engaged and a disengaged state.
    Type: Grant
    Filed: June 18, 2007
    Date of Patent: February 15, 2011
    Assignee: The Gleason Works
    Inventor: Johann Mall
  • Quick-adjust draw rod positioning nut
    Patent number: 7836803
    Abstract: A quick-adjust draw rod positioning nut which is attachable to a machine's chuck and/or de-chuck prime mover via a base portion. The positioning nut includes an engagement portion preferably comprising at least two segments that can be held in a collapsed position, where the segments threadably engage a draw rod, or an expanded position, where the segments are out of engagement with the draw rod, depending on the presence or positioning of a ring. In the collapsed position, the engagement portion can be disengaged from the base to permit rotation of the engagement portion and thereby effecting axial movement of the draw rod in order to achieve proper axial positioning of the draw rod in the machine. The engagement portion can be locked in one of a plurality of incrementally spaced rotational positions to adjust the axial position of the draw rod to a desired position.
    Type: Grant
    Filed: April 14, 2008
    Date of Patent: November 23, 2010
    Assignee: The Gleason Works
    Inventors: William D. McGlasson, Kenneth E. Glasow
  • RUNOUT COMPENSATION ON MACHINE TOOLS
    Publication number: 20100290851
    Abstract: A method of determining axial and/or radial runout due to workholding equipment and compensating for such runout during machining of a gear wherein axial and/or radial runout compensations are executed during the machining of each individual tooth slot.
    Type: Application
    Filed: March 16, 2009
    Publication date: November 18, 2010
    Applicant: THE GLEASON WORKS
    Inventors: Hermann J. Stadtfeld, Joseph A. Courtney, Gary J. Kimmet
  • METHOD AND DEVICE FOR REMOVING A SECONDARY BURR ON AN END-CUT WORK PIECE WHEEL
    Publication number: 20100273400
    Abstract: A method and a device for removing secondary burrs raised on the tooth flanks of a work piece wheel by a chamfering of the end tooth edges of said work piece wheel provides a tool wheel that rotationally meshes with the work piece wheel. Said tool wheel has cutting edges on its tooth flanks (5, 6) and their cutting motion, caused by the meshing, removes the secondary burrs by cutting.
    Type: Application
    Filed: April 13, 2010
    Publication date: October 28, 2010
    Applicant: THE GLEASON WORKS
    Inventors: Karl Schaeferling, Gerhard Reichert
  • ARRANGEMENT TO CONNECT A TOOL WHEEL AND A TOOL HOLDING FIXTURE
    Publication number: 20100272535
    Abstract: An arrangement for the non-rotational connection between a toothed tool wheel for the machining of end peripheral areas of tooth flanks, having an axis of rotation, and a tool holding fixture that can be rotationally driven around an axis of rotation. Said arrangement has an elastic means with a restoring force against which the direction of the axis of rotation of the tool wheel can be displaced relative to the direction of the axis of rotation of the tool holding fixture.
    Type: Application
    Filed: April 13, 2010
    Publication date: October 28, 2010
    Applicant: THE GLEASON WORKS
    Inventors: Karl Schaeferling, Gerhard Reichert
  • Gear cutting machine, in particular bevel gear cutting machine, having a device for chamfering / deburring the edges of a work piece
    Patent number: 7794186
    Abstract: A gear cutting machine wherein a chamfer/deburr device and tool are fastened to a fixed component of the gear cutting machine. In this way, it is possible to adjust the chamfering/deburring tool into the working position in a simple and dependable manner to remove the edges from a gear. The device preferably has a linear track as well as a pivot axis, which can position the tool into the optimum position for the chamfering and/or deburring of the gear.
    Type: Grant
    Filed: July 6, 2006
    Date of Patent: September 14, 2010
    Assignee: The Gleason Works
    Inventors: Klaus Peiffer, Matthias Philippin
  • Expanable mandrel
    Patent number: 7748718
    Abstract: An expandable mandrel for holding a part has a shank with inclined radial slots slidably engaged by keys. The keys are coordinated by a collar which engages an extension on each key. A platen affixes to the shank of the mandrel to provide a stop that will index the position of a part mounted onto the mandrel. The platen has radial key passages to allow longitudinal movement of the keys in the slots. The platen preferably has resilient indexing nubs to engage the part. Preferably, the position of the platen on the mandrel can be adjusted by a set screw engaging one of several indexing holes or engaging a longitudinal guide track. For machining in a wet environment, the slots can be provided with longitudinal rails and the keys provided with transverse channels to remove liquid from between the keys and the slots.
    Type: Grant
    Filed: June 16, 2006
    Date of Patent: July 6, 2010
    Assignee: The Gleason Works
    Inventor: Charles E. Brettell
  • Carriage arrangement for a machine tool
    Patent number: 7712227
    Abstract: An actuation device driven by the adjusting motion of a first carriage is provided and, because of the adjusting motion of the first carriage from the first position into the second position, the adjusting motion of a second carriage can be driven from the measurement point to the rest position, and because of the adjusting motion of the first carriage from the second position into the first position, the adjusting motion of the second carriage can be driven from the rest position to the measurement point.
    Type: Grant
    Filed: September 8, 2008
    Date of Patent: May 11, 2010
    Assignee: The Gleason Works
    Inventor: Uwe Gampe
  • Variable rate method of machining gears
    Patent number: 7682222
    Abstract: A method of machining gears or other toothed articles wherein the workpiece feed rate and/or the tool shifting is varied so as to produce an irregular surface pattern on tooth surfaces with a resulting reduction in mesh noise. The method is particularly applicable to grinding spur and/or helical gears with a grinding worm.
    Type: Grant
    Filed: May 6, 2005
    Date of Patent: March 23, 2010
    Assignee: The Gleason Works
    Inventor: Brian J. Baldeck
  • Method of lapping gears
    Patent number: 7651383
    Abstract: The present invention provides a controllable gear lapping process whereby the lapping process may be modified at discrete locations on the tooth surface in order to selectively modify the tooth flank surface.
    Type: Grant
    Filed: October 12, 2007
    Date of Patent: January 26, 2010
    Assignee: The Gleason Works
    Inventor: Hermann J. Stadtfeld
  • Gear testing and lapping machine
    Patent number: 7553115
    Abstract: A machine for processing gears, such as by testing and lapping, which can accommodate a wide range of gear pair shaft angles (less than, equal to, and greater than ninety degrees) while providing improved machine stiffness and an enhanced arrangement of machine elements.
    Type: Grant
    Filed: September 6, 2007
    Date of Patent: June 30, 2009
    Assignee: The Gleason Works
    Inventors: William D. McGlasson, Daniel D. Wood, David E. Lawson
  • Method of finishing bevel gears to produce a diffuse surface structure
    Patent number: 7462092
    Abstract: A method for providing a surface structure wherein conventional grinding micro scratches are broken up to provide a diffuse structure of micro scratches and micro flats resulting from grinding wheel motion comprising an eccentric revolving of the grinding wheel and/or grinding wheel pulsing.
    Type: Grant
    Filed: September 13, 2007
    Date of Patent: December 9, 2008
    Assignee: The Gleason Works
    Inventors: Hermann J. Stadtfeld, Uwe Gaiser
  • Method of lapping gears
    Publication number: 20080113592
    Abstract: The present invention provides a controllable gear lapping process whereby the lapping process may be modified at discrete locations on the tooth surface in order to selectively modify the tooth flank surface.
    Type: Application
    Filed: October 12, 2007
    Publication date: May 15, 2008
    Applicant: The Gleason Works
    Inventor: Hermann Stadtfeld
  • Manufacturing straight bevel gears
    Patent number: 7364391
    Abstract: A method and tool arrangement for producing straight bevel gears and the like on a multi-axis computer controlled machine wherein a single tool is utilized in the machining process.
    Type: Grant
    Filed: October 4, 2006
    Date of Patent: April 29, 2008
    Assignee: The Gleason Works
    Inventors: Hermann J. Stadtfeld, Uwe Gaiser, Earl D. Ervay, Theodore J. Krenzer
  • Method for dressing a grinding worm
    Patent number: 7294046
    Abstract: A method for dressing an essentially cylindrical grinding worm on a machine suitable for continuous generation grinding in the diagonal method. The dressing tool is an essentially cylindrical gear wheel, having an abrasive coating on the surface that effects the dressing, which is brought into engagement with the grinding worm to move relative to the grinding worm in axial direction of the same to profile the flanks of the grinding worm. A periodically alternating movement in axial direction of the dressing gear wheel is superimposed on the relative movement of the dressing gear wheel, with the wavelength of the oscillating relative movement being the same or smaller than the usable width of the grinding worm in its axial direction.
    Type: Grant
    Filed: March 16, 2005
    Date of Patent: November 13, 2007
    Assignee: The Gleason Works
    Inventors: Antoine Turich, Gerhard Reichert
  • Method of gaging on gear lapping and testing machines
    Patent number: 7228643
    Abstract: A system to replace or augment the common manual cone-gage method with a method that is highly automated on a CNC machine. Two cone-gage fixtures are employed, getting clamped into the gear and pinion workholding fixtures, respectively. But instead of mechanical contact, dial indicators, or other methods, a precision electronic touch probe is employed that, together with the CNC motion-controlled machine axes, can be used to measure and position gage fixture surfaces.
    Type: Grant
    Filed: February 16, 2006
    Date of Patent: June 12, 2007
    Assignee: The Gleason Works
    Inventor: William D. McGlasson
  • Truing tool for truing a grinding worm
    Patent number: 7204243
    Abstract: A truing tool for truing an essentially cylindrical grinding worm that is arranged on the tool spindle of a machine suitable for the continuous generation grinding in the tangential- and diagonal process. The truing tool comprises an essentially cylindrical gear wheel (6) having an abrasive coating on the surface that is active during truing to profile the flanks of the grinding worm (3) and an essentially cylindrical roll (7) having an abrasive coating on its circumferential surface to adapt the diameter of the addendum circle of the grinding worm. The gear wheel (6) and the roll (7) can be connected axially and torsion-resistantly to the work piece spindle (1) of the machine.
    Type: Grant
    Filed: April 21, 2004
    Date of Patent: April 17, 2007
    Assignee: The Gleason Works
    Inventor: Engelbert Schauer
  • Workpiece loading apparatus for machine tool
    Patent number: 7198440
    Abstract: Method and apparatus for positioning a workpiece in a spindle of a machine tool and/or removing a workpiece from the spindle. The machine spindle includes an axis of rotation and the workpiece includes a centerline extending between a first end surface and a second end surface. A mechanism is provided for grasping the workpiece, preferably on its centers, in a position proximate the spindle whereby the workpiece centerline is coincident with the axis of rotation of the spindle. The spindle is moved relative to the workpiece in the direction of the axis of rotation whereby the workpiece is inserted into the spindle or removed from the spindle.
    Type: Grant
    Filed: February 17, 2004
    Date of Patent: April 3, 2007
    Assignee: The Gleason Works
    Inventor: James J. Gnadt
  • Coolant delivery apparatus for machine tool
    Patent number: 7182674
    Abstract: A coolant delivery apparatus for a machine tool wherein the position of the coolant delivery apparatus is controllable such that coolant may be delivered to the machining contact zone of a tool even though the location of the machining zone of the tool may change such as during machining of a workpiece, or from one workpiece to another.
    Type: Grant
    Filed: March 30, 2004
    Date of Patent: February 27, 2007
    Assignee: The Gleason Works
    Inventor: Eric G. Mundt
  • Dressing tool for profiling the tip area of a threaded grinding wheel
    Patent number: 7118459
    Abstract: A dressing tool for profiling the tip area of a threaded grinding wheel used for continuous generation grinding. Concave working faces (13) are arranged in a cylindrical surface of the dressing tool (7) and coated with an abrasive coating. The pitch (P) of said working faces (13) corresponds to the pitch of the grinding wheel (3). The dressing tool (7) can be brought into rolling engagement with the grinding wheel (3) under crossed axes.
    Type: Grant
    Filed: July 26, 2005
    Date of Patent: October 10, 2006
    Assignee: The Gleason Works
    Inventors: Antoine Turich, Engelbert Schauer