Abrading – Abrading process – Gear or worm abrading
Patent
1996-07-16
1998-10-20
Rose, Robert A.
Abrading
Abrading process
Gear or worm abrading
451 56, 451 72, 451161, B23F 2310
Patent
active
058238573
ABSTRACT:
A precision grinding apparatus includes a grinding worm for precision grinding a case-hardened face gear. A shaper is first placed into contact with a face gear, to thereby shape a surface of the face gear into a plurality of face gear teeth. The shaper is then removed, and the face gear is case hardened. The grinding worm is disposed in a normal orientation to the case-hardened face gear and includes a spiral tooth extending along a perimeter of the grinding worm. The spiral tooth of the grinding worm is adapted to contact and precision grind the case-hardened gear. A dressing tool includes a protrusion for contacting the spiral tooth of the grinding worm, as the spiral tooth contacts and precision grinds the case-hardened face gear. The dressing tool thus maintains the shape of the grinding worm to within a desired tolerance range.
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McDonnell Douglas Helicopter Company
Rose Robert A.
Stout Donald E.
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