Effect of CBN Grinding on the Bending Strength of Carburized Gears-Reference-Cited by-同舟云学术

Effect of CBN Grinding on the Bending Strength of Carburized Gears

Published:1998-12-01 Issue:4 Volume:120 Page:606-611
ISSN:1050-0472
Container-title:Journal of Mechanical Design
language:en
Short-container-title:

Author:

Inoue K.¹,Sonoda H.²,Deng G.³,Yamanaka M.¹,Kato M.¹

Affiliation:

1. Graduate School of Engineering, Tohoku University, Aramaki-Aoba, Sendai 980-8579, Japan

2. East Japan Railway, 1-6-5 Hiromachi, Shinagawa, Tokyo 140-0005, Japan

3. Faculty of Engineering, Miyazaki University, 1-1 Gakuen Kibanadai-Nishi, Miyazaki 889-2192, Japan

Abstract

The surface condition of a carburized gear is improved by CBN grinding, in addition to the generation of a compressive residual stress at the ground surface. To clarify the effect of these merits on the strength enhancement, a bending fatigue test is performed for the carburized and the CBN-ground gears. The fillet as well as involute tooth surface is ground by an electroplated threaded CBN wheel. The low axial feed rate and the spark-out treatment are effective in improving the surface finish and increasing the compressive residual stress, and the strengths of CBN-ground gears are increased from 100 MPa to 160 MPa in comparison with the carburized gears. Moreover, the test results are discussed on the basis of the fracture mechanics-based strength evaluation which has been proposed by the authors. This analysis demonstrates that the influence of CBN grinding on strength is smaller than the effects of surface-treatments such as shot peening and chemical polishing.

Publisher

ASME International

Subject

Computer Graphics and Computer-Aided Design,Computer Science Applications,Mechanical Engineering,Mechanics of Materials

Link

http://asmedigitalcollection.asme.org/mechanicaldesign/article-pdf/120/4/606/5685160/606_1.pdf

Reference19 articles.

1. Aida T. , OdaS., KusanoK., and ItoY., 1967, “Bending Fatigue Strength of Gears,” Trans. JSME (in Japanese), Vol. 33, pp. 1314–1320.

2. Besuner, P. M., 1976, “Residual Life Estimates for Structures with Partial Thickness Cracks,” Mechanics of Crack Growth, ASTM STP590, pp. 403–419.

3. Drago R. J. , 1990, “Comparative Load Capacity Evaluation on CBN-Finished Gears,” Gear Technology, Vol. 7, pp. 8–48.

4. Inoue, K., Kato, M., and Yamanaka, M., 1989, “Fatigue Strength and Crack Growth of Carburized and Shot Peened Spur Gears,” Proceedings of the International Power Transmission and Gearing Conference, Vol. 2, ASME Book No. 10288B, pp. 663–668.

5. Inoue, K., Lyu, S., Kato, M., Onishi, M., and Shimoda, K., 1994, “Effects of Surface Condition on Bending Strength of Carburized Gear Teeth,” Proceedings of 1994 International Gearing Conference, UK National Gear Metrology Laboratory, pp. 183–188.

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