Manuscript received April 18, 2022; revised May 30, 2022; accepted July 23, 2023; published November 6, 2023.
Abstract—Currently, improving the Noise Vibration Harshness (NVH) characteristics of systems is among the most important issues for meeting user needs in the automotive industry. Remember that the tooth surface accuracy significantly influences the vibrations in gear meshing. The hypoid gear used in the automobile differential has a complex shape; hence, estimating its contact conditions is difficult. Therefore, we aim to develop a novel method to analyze the tooth contact conditions by using highly sensitive infrared thermography measurements with a high response. The proposed method acts as a noncontact analysis that is based on monitoring the temperature distribution during meshing between the pinion and gear surfaces. In this report, we designed three hypoid gear types with high-reduction ratios. Subsequently, a tooth contact analysis was carried out using thermography measurements. As a result, the relationship between the temperature rise at the tooth contact area was clarified.
Index Terms—High-reduction, hypoid gear, thermography, gear mesh loss
Kouki Watanabe, Toshiki Hirogaki, and Eiichi Aoyama are with Doshisha University of Technology, Japan. E-mail: thirogak@mail.doshisha.ac.jp (T.H.), eaoyama@mail.doshisha.ac.jp (E.A.)
*Correspondence: kouki1003w@outlook.jp (K.W.)
Cite: Kouki Watanabe*, Toshiki Hirogaki, and Eiichi Aoyama , "Investigating the Tooth Contact Based on a High-speed Thermography Monitoring Conducted Under High-reduction Hypoid Gears Meshing Conditions," International Journal of Modeling and Optimization vol. 13, no. 4, pp. 139-143, 2023.
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