Metal working – Method of mechanical manufacture – Gear making
Reexamination Certificate
2005-07-19
2005-07-19
Omgba, Essama (Department: 3726)
Metal working
Method of mechanical manufacture
Gear making
C029S893000, C029S893300, C074S462000, C451S047000
Reexamination Certificate
active
06918181
ABSTRACT:
A method for improving acoustic and vibrational properties of gears includes determining the transmission errors of intermeshing gears due to stiffness variations in the gear teeth, performing Gear Tooth Topological (GTT) modifications to compensate for the errors, and isotropically processing the gears to produce an ultra-smooth surface finish. Additional errors from isotropic processing, machining, loading, thermal effects and/or load sharing may be summed with the errors from the stiffness variations and used for the GTT modifications. The teachings of the present invention may reduce noise by as much as 13 to 15 dB.
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Cooper Clark V.
Hansen Bruce D.
Karedes Edward J.
Vinayak Harsh
Zunski Lawrence M.
Carlson & Gaskey & Olds
Omgba Essama
Sikorsky Aircraft Corporation
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