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Research Papers

Analytical and Experimental Tooth Contact Pattern of Large-Sized Spiral Bevel Gears in Cyclo-palloid System

[+] Author and Article Information
Kazumasa Kawasaki

Center for Cooperative Research, Niigata University, 8050, Ikarashi 2-nocho, Nishi-ku, Niigata 950-2181, Japankawasaki@ccr.niigata-u.ac.jp

Isamu Tsuji

 Iwasa Tech Co., Ltd., 12-40 Shinkiba 4-chome, Koto-ku, Tokyo 136-0082, Japaniwasa@fa.mbn.or.jp

J. Mech. Des 132(4), 041004 (Apr 13, 2010) (8 pages) doi:10.1115/1.4001348 History: Received June 17, 2009; Revised February 10, 2010; Published April 13, 2010; Online April 13, 2010

Demand for large-sized spiral bevel gears has increased in recent years and a trend expected to continue. The large-sized spiral bevel gears with equi-depth teeth are usually manufactured based on Klingelnberg cyclo-palloid system. In this paper, the tooth contact pattern of large-sized spiral bevel gears in this system are investigated analytically and experimentally. First, the tooth contact pattern and transmission errors of such gears are analyzed. The analysis method is based on simultaneous generations of tooth surface and simulations of meshing and contact. Next, the large-sized spiral bevel gears are manufactured and the tooth contact pattern of these gears is investigated experimentally. Moreover, the real tooth surfaces are measured using a coordinate measuring machine and the tooth flank form errors are detected using the measured coordinates. It is possible to analyze the tooth contact pattern of the spiral bevel gears with consideration of the tooth flank form errors expressing the errors as polynomial equations. Finally, the influence of alignment errors due to assembly on the tooth contact pattern is also investigated analytically and experimentally. These analyzed results were compared with experimental ones. As a result, the two results showed a good agreement.

FIGURES IN THIS ARTICLE
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Copyright © 2010 by American Society of Mechanical Engineers
Topics: Gears , Errors
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References

Figures

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Figure 1

Klingelnberg AMK spiral bevel gear generator

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Figure 2

Tooth trace of complementary crown gear

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Figure 3

Cutting edges of cutter

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Figure 4

Locus of cutting edge

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Figure 5

Meshing of pinion and gear

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Figure 6

Results of tooth contact analysis

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Figure 7

L-R axis system of tooth flank grid

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Figure 8

Measurement of tooth flank form

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Figure 9

Procedure deriving relation between fundamental components of polynomial expression and tooth flank form errors (mm)

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Figure 10

5×9 grid on tooth flank form

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Figure 11

Comparisons of analyzed and experimental tooth contact patterns with alignment errors of drive side

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Figure 12

Comparisons of analyzed and experimental tooth contact patterns with alignment errors of coast side

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