GSD-11 EVALUATION OF AN ESTIMATION METHOD FOR PITTING LIFE OF CARBURIZED GEARS BASED ON ROLLER TESTS(GEAR STRENGTH AND DURABILITY)
スポンサーリンク
概要
- 論文の詳細を見る
In order to analyze gear tooth face pitting, the previous research presented the influence of pitting factors and the life estimation formulas that were accomplished using carburized roller tests under various test conditions. This paper presents the evaluations of the tooth pitting life estimation method based on roller pitting analysis as compared with conventional calculation methods of the tooth face strength and the results of gear pitting tests. The coefficient values of the pitting factors in the roller formula for life estimation are within the limit of those values given in the conventional calculation methods ; ISO, AGMA and so on. The roller formula includes some important pitting factors that are not significantly considered in the conventional methods. Therefore, the tooth pitting life estimation based on the roller formula gives a more definite value than the conventional methods for carburized gears. The comparison of pitting life between the estimation of the roller formula and the actual gear tests was carried out. The result shows that the pitting lives estimated by the roller formula are shorter than that of actual gear tests. This is caused by the surface wear of the carburized gear's tooth face. The surface wear induces a decrease in the contact stress that strongly influences the pitting life. It also induces the fact that the oxidized-nonmartensitic layer wears out and the stronger case hardened surface appears.
- 一般社団法人日本機械学会の論文
- 2001-11-15
著者
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Inoue Katsumi
Department of Cardiology, Kokura Memorial Hospital
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Inoue Katsumi
Department Of Cardiology Kokura Memorial Hospital
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Hotta Shoji
Materials Div. 1 Toyota Central R&d Labs. Inc.
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SUZUKI Tomohiro
Materials Div. l, Toyota Central R&D Labs., Inc.
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ASAI Mikio
Drive Train Engineering Div. 1, Toyota Motor Corporation
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Asai Mikio
Drive Train Engineering Div. 1 Toyota Motor Corporation
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Suzuki Tomohiro
Materials Div. L Toyota Central R&d Labs. Inc.
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