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

doi:10.1080/15397730601182802

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: Journal Publication › Article › peer-review

32 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 language	English
Pages (from-to)	59-73
Number of pages	15
Journal	Mechanics Based Design of Structures and Machines
Volume	35
Issue number	1
DOIs	https://doi.org/10.1080/15397730601182802
Publication status	Published - Jan 2007
Externally published	Yes

Keywords

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

ASJC Scopus subject areas

Civil and Structural Engineering
General Mathematics
Automotive Engineering
Aerospace Engineering
Condensed Matter Physics
Ocean Engineering
Mechanics of Materials
Mechanical Engineering

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10.1080/15397730601182802

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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.",

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author = "C. Spitas and V. Spitas",

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AU - Spitas, V.

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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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KW - Enlarged cutter tip radius

KW - Finite element method

KW - Gear bending strength

KW - Trochoidal fillet

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

Abstract

Keywords

ASJC Scopus subject areas

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