Modified Involute Helical Gears: Computerized Design, Simulation of Meshing and Stress Analysis

Abstract

The 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.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 2003
Accession Number
ADA417105

Entities

Organizations

  • National Aeronautics and Space Administration

Tags

Communities of Interest

  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Algorithms
  • Applied Mechanics
  • Bending Stress
  • Computer Programs
  • Computers
  • Coordinate Systems
  • Engineering
  • Finite Element Analysis
  • Geometry
  • Lead Angle
  • Mechanics
  • Relative Motion
  • Simulations
  • Space Sciences
  • Stress Analysis
  • Three Dimensional
  • Vibration

Fields of Study

  • Engineering

Readers

  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).