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Research Papers

Experimental and Numerical Study of a Loaded Cylindrical PA66 Gear

[+] Author and Article Information
Michele Guingand

e-mail: michele.guingand@insa-lyon.fr

Jean-Pierre de Vaujany

Université de Lyon,
CNRS,
INSA-Lyon, LaMCoS UMR5259,
F-69621, Bât. Jean d'Alembert,
18-20 rue des Sciences,
69621 Villeurbanne cedex, France

Laurent Chazeau

Université de Lyon,
CNRS,
INSA-Lyon, MATEIS UMR5510,
F-69621, Bât. Blaise Pascal,
25 av. Jean Capelle,
69621 Villeurbanne cedex, France

1Corresponding author.

Contributed by the Power Transmission and Gearing Committee of ASME for publication in the JOURNAL OF MECHANICAL DESIGN. Manuscript received May 3, 2012; final manuscript received January 24, 2013; published online March 26, 2013. Assoc. Editor: Avinash Singh.

J. Mech. Des 135(4), 041007 (Mar 26, 2013) (9 pages) Paper No: MD-12-1234; doi: 10.1115/1.4023634 History: Received May 03, 2012; Revised January 24, 2013

Polymer gears replace metal ones in many motion and light power transmission applications. This paper presents a numerical method to predict the mechanical behavior of plastic cylindrical gears and its experimental validation. The numerical method uses a viscoelastic model in its linear domain depending on temperature, humidity, and rotational speed. This numerical simulation computes the load sharing between instantaneously engaged gears and provides results such as contact pressure, tooth root stress, or transmission error. The numerical results are then compared to experimental measures on a test bench developed at the LaMCoS laboratory. This comparison allows the validation of the load sharing model.

FIGURES IN THIS ARTICLE
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Copyright © 2013 by ASME
Topics: Stress , Gears , Errors , Temperature
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References

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Figures

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Fig. 1

Computing process [16]

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Fig. 2

Generalized Kelvin model

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Fig. 4

Master curve of the polyamide obtained by DMA at 0 °C

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Fig. 5

(a) Load sharing model at 25 °C, 50% of relative humidity, 300 rpm and 10 N · m; Fig. 5(b) Gear transmission error at 25 °C, 50% of relative humidity, 300 rpm and 10 N · m

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Fig. 6

Perspective scheme of the test bench

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Fig. 7

Phase difference encoder [3]

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Fig. 8

Transmission error on one gear revolution

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Fig. 9

Transmission error sampling on one gear revolution

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Fig. 10

Transmission error at 300 rpm and 10 N · m, without deviation and inclination errors

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Fig. 11

Transmission error at 300 rpm and 10 N · m, with maximum deviation and inclination variation

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Fig. 12

Transmission error at 300 rpm and 10 N · m with center distance variation

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Fig. 13

Transmission error at 400 rpm and 10 N · m, with shaft distance variation

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