A FEM study of the bending strength of circular fillet gear teeth compared to trochoidal fillets produced with enlarged cutter tip radius

C. Spitas, V. Spitas

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Circular fillet (CF) gears have been proven to possess a higher bending strength than their standard trochoidal fillet (TF) counterparts. However, stronger nonstandard variants of the TF are already possible to produce by increasing the tip radius of the cutters used for gear generation (racks, hobs, pinion cutters), affording competitive results. In this paper a comparison of the bending strength is made between the CF and the nonstandard large tip radius TF designs spanning the entire usable tooth number range using FEA. The results suggest a systematic advantage of the CF over the stronger variants of the TF for numbers less than 17 teeth, which is the undercut limit for the 20° involute gear system.

Original languageEnglish
Pages (from-to)59-73
Number of pages15
JournalMechanics Based Design of Structures and Machines
Volume35
Issue number1
DOIs
Publication statusPublished - Jan 2007
Externally publishedYes

Fingerprint

gear teeth
fillets
cutters
Gear teeth
flexural strength
Bending strength
Gears
Radius
Finite element method
radii
Rack
teeth
Entire
racks
Range of data

Keywords

  • Circular fillet
  • Enlarged cutter tip radius
  • Finite element method
  • Gear bending strength
  • Trochoidal fillet

ASJC Scopus subject areas

  • Engineering(all)

Cite this

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AB - Circular fillet (CF) gears have been proven to possess a higher bending strength than their standard trochoidal fillet (TF) counterparts. However, stronger nonstandard variants of the TF are already possible to produce by increasing the tip radius of the cutters used for gear generation (racks, hobs, pinion cutters), affording competitive results. In this paper a comparison of the bending strength is made between the CF and the nonstandard large tip radius TF designs spanning the entire usable tooth number range using FEA. The results suggest a systematic advantage of the CF over the stronger variants of the TF for numbers less than 17 teeth, which is the undercut limit for the 20° involute gear system.

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