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Design and Development of Compact Ceramics Reinforced Pump with Low Internal Leakage for Electro-Hydrostatic Actuated Robots

  • Mitsuo KomagataEmail author
  • Tianyi Ko
  • Yoshihiko Nakamura
Conference paper
Part of the Mechanisms and Machine Science book series (Mechan. Machine Science, volume 73)

Abstract

In this paper, we developed a compact pump reinforced by ceramics structure. In order to reduce the internal leakage, we developed a ceramics reinforcer for the pump-casing to suppress the deformation of the casing under high pressure, and devised the structure using bearing balls which can adjust the gap between the gear and the casing precisely. To evaluate the internal leakage, we used the internal leakage resistance which indicate the difficulty of internal leakage. Internal leakage resistance of developed pump is 3.39 × 1013Pa·s/m3 which means that the internal leakage loss of developed pump is 1/2.8 times that of previously developed pump.

Keywords

hydraulic EHA pump ceramics 

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Mitsuo Komagata
    • 1
    Email author
  • Tianyi Ko
    • 1
  • Yoshihiko Nakamura
    • 1
  1. 1.Graduate School of Information Science and TechnologyThe University of TokyoBunkyo, TokyoJapan

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