Strength of spline joints assembled by forming |
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Authors: | Kenji Hirota Kazuhiko Kitamura Yoshihiko Ukai Keiichi Matsunaga |
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Affiliation: | 1. Department of Materials Science and Engineering, Kyushu Institute of Technology, Kitakyushu, Fukuoka 804-8550, Japan;2. Department of Mechanical Engineering, Nagoya Institute of Technology, Nagoya, Aichi 466-8555, Japan;3. Toyota Motor Corporation, Toyota, Aichi 471-8571, Japan;4. MEG Inc., Anjo, Aichi 446-0052, Japan |
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Abstract: | In this paper, a new assembling method of spline joints that enables tight fitting in a simple manner by allowing slight plastic deformation at the spline teeth was introduced. Experiments were carried out for the spline joints of medium carbon steel varying the overlap zone between the male and the female spline teeth. Axial joining strength was increased with increase in the overlap length due to the residual compressive stress by forming. The joint by the proposed method also showed higher torsional strength than the conventional joint. Improvement in the torsional strength was explained based on the deformation and hardness distribution around the spline teeth. With respect to the shape of overlap zone, better results were obtained when using the specimen having a uniform overlap length along the axial direction. |
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Keywords: | Spline joint Torsional strength Assembly by forming |
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