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Modified Involute Helical Gears: Computerized Design, Simulation of Meshing and Stress AnalysisThe computerized design, methods for generation, simulation of meshing, and enhanced stress analysis of modified involute helical gears is presented. The approaches proposed for modification of conventional involute helical gears are based on conjugation of double-crowned pinion with a conventional helical involute gear. Double-crowning of the pinion means deviation of cross-profile from an involute one and deviation in longitudinal direction from a helicoid surface. Using the method developed, the pinion-gear tooth surfaces are in point-contact, the bearing contact is localized and oriented longitudinally, and edge contact is avoided. Also, the influence of errors of alignment on the shift of bearing contact, vibration, and noise are reduced substantially. The theory developed is illustrated with numerical examples that confirm the advantages of the gear drives of the modified geometry in comparison with conventional helical involute gears.
Document ID
20040008831
Document Type
Contractor Report (CR)
Date Acquired
September 7, 2013
Publication Date
June 1, 2003
Subject Category
Computer Programming And Software
Report/Patent Number
NASA/CR-2003-212229
ARL-CR-514
AD-A417105
Funding Number(s)
CONTRACT_GRANT: NAG3-2450
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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