2001•The Proceedings of the JSME international conference on motion and power transmissionsOpen access

GUDA-11 DESIGN AND PERFORMANCE OF GEAR PUMPS WITH NON-INVOLUTE TOOTH PROFILE(GEAR UNIT DESIGN AND APPLICATIONS)

Kazuteru Nagamura, Kiyotaka IKEJO, Toshio TOYOSHIMA, Masanobu UEDA

Abstract

This paper describes design and performance of external gear pumps with the tooth profile based on cycloid tooth profile. We developed the method to accurately calculate the displacement volume of external gear pump to apply non- involute tooth profile as well as involute tooth profile. Using this method, we calculated the displacement volume of external gear pump with involute tooth profile, cycloid tooth profile, involute- cycloid composite tooth profile, and modified cycloid tooth profile. Then, we discussed merits and demerits of these tooth profiles on the displacement volume. In addition, we made a gear pump with involute- cycloid composite tooth profile, and the displacement volume of the pump was measured. Consequently, it was confirmed from both the calculated and the experimental results that the displacement volume of the gear pump with involute- cycloid composite tooth profile is about 20% larger than that of the conventional gear pump with involute tooth profile.

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Key concepts: Involute, Cycloid, Cycloid gear, Gear pump, Involute gear, Displacement (psychology), Engineering, Mechanical engineering