Lifetime and meshing-teeth temperature of a crossed helical gear consisting of a plastic gear and a metal gear: In case of no-lubrication
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- TAKAHASHI Mikio
- Department of Mechanical Engineering, National Institute of Technology, Kisarazu College
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- ITAGAKI Takayoshi
- Department of Mechanical Engineering, National Institute of Technology, Kisarazu College
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- TAKAHASHI Hideo
- Department of Mechanical Engineering, National Institute of Technology, Kisarazu College
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- KOIDE Takao
- Department of Mechanical and Aerospace Engineering, Tottori University
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- KOBORI Yuki
- Advanced course of Mechanical and Electrical Engineering, National Institute of Technology, Kisarazu College
抄録
<p>The strength of plastic greatly varies with temperature; that is, the strength increases as the temperature decreases. Therefore, the lifetime of a plastic gear can be increased by reducing the meshing-teeth temperature of the gear. The meshing-teeth temperature can be reduced by changing the material of the mating gear from plastic to metal considering that a metal gear will have high thermal conductivity. In this study, we investigated the load-carrying characteristics of an unlubricated crossed helical gear consisting of a plastic gear meshed with a metal gear. We performed gear lifetime experiments and meshing-teeth temperature survey experiments. The results showed that the failure mode of the plastic crossed helical gear was caused by the breakage of the tooth and the rim. Then, we confirmed that the stress ratio could be an index for the lifetime evaluation of the plastic crossed helical gear that could fail by tooth breakage. Additionally, by testing gear pairs with several dimensions, we confirmed that the mean flash temperature could be an index for the meshing-teeth temperature evaluation of the plastic crossed helical gear. Furthermore, we proposed a lifetime estimation method for the plastic crossed helical gear that could fail by tooth breakage and verified the validity of the proposed method based on the experimental results.</p>
収録刊行物
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- Journal of Advanced Mechanical Design, Systems, and Manufacturing
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Journal of Advanced Mechanical Design, Systems, and Manufacturing 11 (6), JAMDSM0081-JAMDSM0081, 2017
一般社団法人 日本機械学会
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詳細情報 詳細情報について
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- CRID
- 1390282680247879680
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- NII論文ID
- 130006267962
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- ISSN
- 18813054
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可