Manuscript received April 8, 2022; revised May 30, 2022; accepted July 23, 2022; published October 25, 2023.
Abstract—A small and high-strength spiral bevel gear
fabricated using a five-axis controlled machining center has
been developed. In previous paper, we proposed a novel spiral
bevel gear with ribs at the end of the tooth width to reinforce the
tooth bending strength, which is machined with a ball-nose
end-mill tool. However, it was shown that the stress could be
concentrated around the ribs depending on the shape although
the tooth root stress was reduced. Therefore, in this paper, we
investigated the influence of the rib shape and size on the
maximum stress at the tooth and rib root fillet and the tooth
deflection with FEM analysis. The results revealed a novel
guideline for designing the shape and size of rib at the end of the
teeth width for the small and high-strength spiral bevel gear.
Index Terms—Novel spiral bevel gear design, rib, FEM,
five-axis controlled machining center
Masahiro Saito and Shinya Toyota are with Asano Gear Co., ltd.,
Higashi-ikejiri, Osakasayama, Osaka, Japan. E-mail:
toyota@asanogear.co.jp (S.T.)
Toshiki Hirogaki and Eiichi Aoyama are with the Department of
Mechanical Engineering, Doshisha University, Tataramiyakodani,
Kyoutanabe, Kyoto, Japan. E-mail: thirogak@mail.doshisha.ac.jp (T.H.);
eaoyama@mail.doshisha.ac.jp (E.A.)
*Correspondence: saito_masahiro@asanogear.co.jp (M.S.)
Cite: Masahiro Saito*, Shinya Toyota, Toshiki Hirogaki, and Eiichi Aoyama, "Consideration of the Optimal Form of Rib by Observing the Stress and the Tooth Deflection of a Small and High-Strength Spiral Bevel Gear Fabricated Using Five-Axis Controlled Machining Center," International Journal of Modeling and Optimization vol. 13, no. 4, pp. 123-128, 2023.
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