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Metrology Evaluation of Superfinished Gears CompletedGears, bearings, and similar mechanical elements transmit loads through the surfaces that are in contact with one another. Thus, the fatigue lives of gears can be improved by providing smoother tooth surfaces. At the NASA Lewis Research Center, we completed a metrology evaluation of one method for making gears with a highly polished, mirrorlike surface. The polished gears were measured carefully. The measurement data showed that the polishing process did, indeed, reduce the surface roughness but did not change the overall tooth shape in any harmful way. This work was done as a partnership of NASA, the U.S. Army, and the University of Wales. NASA provided conventionally ground gear specimens and has begun testing to determine the fatigue lives of the superfinished gears. Under contract, the University of Wales superfinished the gears and inspected them before and after the superfinishing operation. The U.S. Army European Research Office provided the funds and procured the contract with the University of Wales.
Document ID
20050192116
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Krantz, Timothy L.
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 7, 2013
Publication Date
April 1, 1999
Publication Information
Publication: Research and Technology 1998
Subject Category
Mechanical Engineering
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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