はすば歯車の振動強度双方最適化歯面設計法 : 第1報,最適化法の基礎(機械要素,潤滑,工作,生産管理など)

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The transmission gear noise of passenger car becomes usually of problem during cruising condition, i. e. under light loading condition. Three dimensional tooth flank form must therefore be optimized in designing to satisfy not only strength reliability under the maximum loading, but also low vibrational characteristics under the light loading. For designing tooth flank forms to meet those requirements, it should also be taken into consideration that the amount of misalignment of gear shafts under the light loading is quite different from that under the maximum loading, because the stiffness of gear support of automotive transmission is considerably low. In this report, the influence of profile and lead form on vibrational excitation under the light loading and that on tooth root stress, Hertz stress and flash temperature under the maximum loading are clarified: There are local optimum conditions, where vibrational excitation is low, as function of combination of the amount of tooth profile modification, of lead crowning, and of lead inclination. In a definite local optimum condition, the tooth flank form that brings the minimum average rotational displacement between driving and driven gears makes vibrational excitation minimum. The range of the amount of lead inclination that satisfies the requirements for load carrying capacity and vibrational limit becomes smaller with increasing the amount of profile modification, if transverse geometrical contact ratio and overlap ratio are both over 1. The fundamentals for designing the optimum tooth flank form in terms of both vibration and load carrying capacity are shown.
一般社団法人日本機械学会の論文
2002-02-25

はすば歯車の振動強度双方最適化歯面設計法 : 第1報,最適化法の基礎(機械要素,潤滑,工作,生産管理など)

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