Development of High Precision and Strength Sintered Ferrous Alloy Gear by Rolling -3rd Report- Improvement of Tooth Root Bending Fatigue Strength of Sintered Ferrous Alloy Gear by Modified Tool
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- Miura Hideshi
- Dept. Mechanical Engineering, Kyushu University
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- Tsumori Fujio
- Dept. Mechanical Engineering, Kyushu University
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- Takemasu Teruie
- Dept. Mechanical and Systems, Tokyo University of Science, Suwa
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- Komoto Kosuke
- Dept. Intelligent Machinery and Systems, Graduate School of Kyushu University
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- Hamamoto Shota
- Dept. Intelligent Machinery and Systems, Graduate School of Kyushu University
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- Unami Shigeru
- JFE Steel Corporation, Steel Research Laboratory
Bibliographic Information
- Other Title
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- 鉄系焼結合金歯車の転造による高精度化・高強度化 ‐第3報‐ 修整歯形工具による鉄系焼結合金歯車の歯元曲げ疲労強度向上
- 鉄系焼結合金歯車の転造による高精度化・高強度化(第3報)修整歯形工具による鉄系焼結合金歯車の歯元曲げ疲労強度向上
- テツケイ ショウケツ ゴウキン ハグルマ ノ テンゾウ ニ ヨル コウセイドカ コウキョウドカ ダイ3ポウ シュウセイ ハガタ コウグ ニ ヨル テツケイ ショウケツ ゴウキン ハグルマ ノ ハモト マゲ ヒロウ キョウド コウジョウ
- Development of High Precision and Strength Sintered Ferrous Alloy Gear by Rolling -3rd Report-
- Improvement of Tooth Root Bending Fatigue Strength of Sintered Ferrous Alloy Gear by Modified Tool
- 修整歯形工具による鉄系焼結合金歯車の歯元曲げ疲労強度向上
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Abstract
Surface finish rolling experiments were carried out using P/M spur gears of 0.6Mo-0.2Mn pre-alloyed sintered steel and of 0.8Mo-0.2Mn partially alloyed sintered steel with the density of 7.10 Mg/m3. A CNC form rolling machine of axis intersection type was employed, and a modified screw-shaped rolling tool was prepared: the modified concave tooth profile optimized by numerical tooth profile analysis for simultaneous rolling of tooth and fillet surface. Then, porosity distributions in the surface layer of rolled gear teeth were determined and the effects of the amount of tool radial feed R0 on the selective surface densification behaviors were evaluated. Besides, single tooth bending fatigue test was conducted. Gears with good tooth profiles were obtained by using the modified tools. As a result, the porosities in both the tooth flank and the fillet at the root were reduced to the target level at R0=600 μm in simultaneous rolling process. Furthermore, the single tooth bending fatigue durability was much improved to about 60 % of the case hardened wrought steel gears of SCM415.
Journal
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- Journal of the Japan Society of Powder and Powder Metallurgy
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Journal of the Japan Society of Powder and Powder Metallurgy 57 (6), 435-441, 2010
Japan Society of Powder and Powder Metallurgy
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Details 詳細情報について
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- CRID
- 1390001206308570240
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- NII Article ID
- 10026441654
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- NII Book ID
- AN00222724
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- COI
- 1:CAS:528:DC%2BC3cXos12gs7Y%3D
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- ISSN
- 18809014
- 05328799
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- NDL BIB ID
- 10755225
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed