RESEARCH PAPERS: Power Transmissions and Gearing Papers

Lubricant Jet Flow Phenomena in Spur and Helical Gears With Modified Center Distances and/or Addendums—For Out-of-Mesh Conditions

[+] Author and Article Information
L. S. Akin

California State University, Long Beach, CA

D. P. Townsend

National Aeronautics and Space Administration, Lewis Research Center, Cleveland, Ohio

J. Mech., Trans., and Automation 107(1), 24-30 (Mar 01, 1985) (7 pages) doi:10.1115/1.3258686 History: Received July 10, 1984; Online November 19, 2009


The work reported is an extension from a previous study which was limited to standard centers and tooth proportions only. This paper includes long and short addendums and modified center distances. The analysis develops the equations for the limit values of variables necessary to remove prior severe limitations or constraints necessary to facilitate computer analysis. A new computer program IMPOUT2 has been developed using these newly established “Limit Formulas” to prevent negative impingement on the pinion. The industrial standard nozzle orientation usually found where the offset S = 0 and inclination angle β = 0 will often cause the pinion to be deprived of primary impingement which can be an important cause of incipient scoring failure in high-speed drives.

Copyright © 1985 by ASME
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