Abrading – Abrading process – Gear or worm abrading
Patent
1997-04-18
2000-11-14
Banks, Derris H.
Abrading
Abrading process
Gear or worm abrading
451 56, B24B 100
Patent
active
061462535
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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Chen Ningxin
Chen Yih-Jen
Heath Gregory F.
Litvin Faydor L.
Sheth Vijay J.
Banks Derris H.
McDonnell Douglas Helicopter Company
Stout Donald E.
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