Dual Cutters Patents (Class 409/44)
  • Topland chamfering of gears
    Patent number: 11090744
    Abstract: A method wherein a cutting or grinding chamfering tool (25) is guided along the face width of a gear (12, 23, 52) through one tooth slot (8) (e.g. from heel to toe) while it contacts the topland corners (10, 1 1) of the respective concave and convex tooth flanks of adjacent teeth (2, 4). The tool moves to an index position, the gear is indexed to the next tooth slot position and the tool moves through the tooth slot (e.g. from the toe to the heel). The cycle is repeated until all topland corners are chamfered.
    Type: Grant
    Filed: May 19, 2017
    Date of Patent: August 17, 2021
    Assignee: THE GLEASON WORKS
    Inventor: Hermann J. Stadtfeld
  • Apparatus for milling a gear for a double enveloping worm gear drive
    Patent number: 4534684
    Abstract: Apparatus for milling a gear for a double enveloping worm gear drive. A rotating milling cutter is advanced toward a workpiece spindle to mill a flank of a gear tooth by tilting the milling cutter supporting frame about an axis that passes through the axis of rotation of the workpiece spindle to form a predetermined change in the helix angle from the top to the root of the tooth. The initial tilt setting of the cutter is adjusted to suit the root helix angle.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: August 13, 1985
    Inventor: Bernard H. Johnson