Abrasive tool making process – material – or composition – Impregnating or coating an abrasive tool
Patent
1973-08-29
1977-11-22
Jones, Jr., James L.
Abrasive tool making process, material, or composition
Impregnating or coating an abrasive tool
51 33R, 51 52R, 90 3, 90 8, B23F 508, B23F 510
Patent
active
040589382
ABSTRACT:
A method for grinding the tooth flanks of a roughed-out, annular, internally-toothed gear wheel wherein the pitch circle of the internally-toothed gear wheel is rotated about or rolled off a fixed circle having a diameter equal to the pitch circle of an externally-toothed pinion, adapted to mesh with the finished internally-toothed gear wheel; and, simultaneously with the rotation of the gear wheel, a grinding wheel is rotated on an axis parallel to the plane of the gear wheel, is reciprocated through the interior of the gear wheel along an axis parallel to the axes of the pitch circle of the gear wheel and the fixed circle and maintained a fixed distance from the axis of the fixed circle, except for normal infeed, and has a circumferentially-disposed grinding surface whose cross-sectional profile is equivalent to the profile of at least a part of the profile of at least one tooth of the pinion; the ratio of the diameter of the fixed circle to the diameter of the pitch circle of the gear wheel being an aliquant fraction whose denominator is equal to the number of teeth of the gear wheel and whose numerator is at least two and not more than the number of teeth of the gear wheel minus 2. The rotation of the gear wheel has superimposed thereon a second rotation by an apparatus in which a fixed externally-toothed gear is mounted on the machine base; a driving portion of an eccentric shaft, having a driven portion whose axis is parallel to and spaced from the axis of the driving portion by a distance equal to the difference between the radius of the pitch circle of the gear wheel and the radius of the fixed circle, is rotatably mounted in the base; a support table, adapted to support the gear wheel concentrically with respect to the driven portion of the shaft, is rotatably mounted on the driven portion of the shaft and has an internally-toothed gear formed thereon circumferentially larger than the externally-toothed gear and spaced therefrom; and a gear means is disposed between the externally-toothed gear and the internally-toothed gear and is adapted to mutually mesh with these gears. Preferably, the externally-toothed gear, the gear means and the internally-toothed gear mesh in a common plane. It is also preferred that the gear means is a pair of mutually meshing gears which individually mesh with the externally-toothed gear and the internally-toothed gear. Finally, the gear means is preferably mounted in a fashion such that it may be adjusted to accommodate different spacings between the externally-toothed gear and the internally-toothed gear.
REFERENCES:
patent: RE20063 (1936-08-01), Miller
patent: 1817405 (1931-08-01), Braren
patent: 2038665 (1936-04-01), Miller
patent: 2665612 (1954-01-01), Nubling
patent: 2861502 (1958-11-01), Caubet
patent: 3782040 (1974-01-01), Harle et al.
Eisenmann Siegfried
Harle Hermann
Bryan James E.
Furstlich Hohenzollernsche Huttenverwaltung Laucherthal
Jones Jr. James L.
Ramsey K. J.
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