Tooth Contact Shift in Loaded Spiral Bevel Gears

Abstract

An analytical method is presented to predict the shifts of the contact ellipses on spiral bevel gear teeth under load. The contact ellipse shift is the motion of the tooth contact position from the ideal pitch point to its location under load. The shifts are due to the elastic motions of the gear and pinion supporting shafts and bearings. The calculations include the elastic deflections of the gear shafts and the deflections of the four shaft bearings. The method assumes that the surface curvature of each tooth is constant near the unloaded pitch point. Results from these calculations will help designers reduce transmission weight without seriously reducing transmission performance. Keywords: Geometry and loading; Contact analysis.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1989
Accession Number
ADA218718

Entities

People

  • D. G. Lewicki
  • F. L. Litvin
  • J. J. Coy
  • M. Savage
  • P. C. Altidis

Organizations

  • National Aeronautics and Space Administration

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Army Aviation
  • Bearing Rollers
  • Bearings
  • Computer Programs
  • Computers
  • Curvature
  • Displacement
  • Engineering
  • Equations
  • Gear Teeth
  • Geometry
  • Manufacturing
  • Mathematics
  • Relative Motion
  • Rigidity
  • Spiral Bevel Gears
  • Teeth

Fields of Study

  • Engineering

Readers

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