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Design and evaluation of two-stage planetary gearbox for special-purpose industrial machinery

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Abstract

The gearbox, as a traditional machine that changes the transmission ratio and transfers power safely, stably, quietly and efficiently, is an irreplaceable component in the field of machinery design. The planetary gear train is the most widely used of the traditional gearbox designs. Although scholars have carried out a variety of research on gearboxes, gear failures, noise and other issues are still common. This article presents a study involving the initial macro geometry design, gear flank modification, static and dynamic analysis, and experimental verification of a two-stage planetary gearbox for special-purpose industrial machinery. Compared to traditional static transmission error simulation, this study presents a novel analysis of the gearbox overall dynamic transmission error. In this research, the modal flexibility is also analyzed to determine the possibility of resonance in the gearbox. As a result, the strength of this gear system is guaranteed by macro design. PPTE (noise evaluation index) of each gear pair is greatly improved after flank modification. The efficiency of power transmission system is also improved with the improvement of vibration. The result of final bench test of the prototype is also quite satisfactory. This also verified the correctness of the theoretical simulation method presented in this research.

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Acknowledgments

This study was supported by the Basic Science Research Program through the NRF of Korea (NRF) funded by the MEST (NRF-2016R1D1A1A09920105) & RomaxDesigner of Romax Technology.

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    Authors and Affiliations

    1. School of Mechanical and Aerospace Engineering, ReCAPT, Gyeongsang National University, Jinju-si, 52828, Korea

      Zhen Qin, Yu-Ting Wu, Amre Eizad, Ki-Hun Lee & Sung-Ki Lyu

    2. R&D Center, SEIL Industrial Co., Ltd., Jinju-si, Korea

      Ki-Hun Lee

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    1. Zhen Qin
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    2. Yu-Ting Wu
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    3. Amre Eizad
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    4. Ki-Hun Lee
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    5. Sung-Ki Lyu
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    Correspondence to Sung-Ki Lyu.

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    Recommended by Associate Editor Beomkeun Kim

    Zhen Qin is a Ph.D. student of the School of Mechanical and Aerospace Engineering, Gyeongsang National University, Jinju, Korea. He has worked at R&D Center of Kdac Co., Ltd. Korea, since 2013. And he was awarded the title of excellent engineer. His primary research interest is mechanical system design.

    Amre Eizad is a Ph.D. student of the School of Mechanical and Aerospace Engineering, Gyeongsang National University, Jinju, Korea. His research interest is mechanical system design.

    Ki-Hun Lee is a Ph.D. student of the School of Mechanical and Aerospace Engineering, Gyeongsang National University, Jinju, Korea. At the same time, he works at R&D Center of SEIL Industrial Co., Ltd., Jinju, Korea. His primary research interest is mechanical system design.

    Sung-Ki Lyu received his bachelor’s, master’s degrees at Chonbuk National University, Korea, in 1987, 1989, respectively. And he got the doctor’s degrees at Tohoku University, Japan, in 1994. Dr. Lyu is currently a Professor of Gyeongsang National University in Jinju, Korea.

    Yu-Ting Wu is a Ph.D. student of the School of Mechanical and Aerospace Engineering, Gyeongsang National University, Jinju, Korea. Her research interest is mechanical system design.

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    Qin, Z., Wu, YT., Eizad, A. et al. Design and evaluation of two-stage planetary gearbox for special-purpose industrial machinery. J Mech Sci Technol 33, 5943–5950 (2019). https://doi.org/10.1007/s12206-019-1139-7

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    • DOI: https://doi.org/10.1007/s12206-019-1139-7

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