Accession Number : ADA163222


Title :   Gearing.


Descriptive Note : Reference publication,


Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION CLEVELAND OH LEWIS RESEARCH CENTER


Personal Author(s) : Coy,John J ; Townsend,Dennis P ; Zaretsky,Erwin V


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a163222.pdf


Report Date : Dec 1985


Pagination or Media Count : 70


Abstract : Gearing technology in its modern form has a history of only 100 years. However, the earliest form of gearing can probably be traced back to fourth century B. C. Greece. This publication draws together current gear practice and integrates it with recent advances in the technology. The history of gearing is reviewed briefly in the 'Introduction.' Subsequent sections describe types of gearing and their geometry, processing, and manufacture. Both conventional and more recent methods of determining gear stress and deflections are considered. The subjects of life prediction and lubrication are additions to the literature, not having been treated before. New and more complete methods of power loss prediction as well as an optimum design of spur gear meshes are described. Conventional and new types of power transmission system are presented. (Author)


Descriptors :   *GEARS , STRESSES , MANUFACTURING , LIFE EXPECTANCY(SERVICE LIFE) , PREDICTIONS , DEFLECTION , GEOMETRY , POWER , LOSSES , LUBRICATION , TRANSMISSIONS(MECHANICAL)


Subject Categories : Machinery and Tools


Distribution Statement : APPROVED FOR PUBLIC RELEASE