RESEARCH PAPERS: Power Transmission and Gearing Papers

A New Continuous Contact Low-Noise Gear Pump

[+] Author and Article Information
K. Mitome

Department of Mechanical Engineering, Yamagata University, Yonezawa, Yamagata, Japan

K. Seki

Nippon Gerotor Corp., Kumagaya, Saitama, Japan

J. Mech., Trans., and Automation 105(4), 736-741 (Dec 01, 1983) (6 pages) doi:10.1115/1.3258544 History: Received November 19, 1982; Online November 19, 2009


Developed is a new low-noise gear pump which has no trapping and whose gears are in continuous one-point contact in the plane of rotation. First this paper studies a practical method to design the tooth profile of a spur gear for a given path of contact. A new tooth profile is obtained by giving a closed path of contact like a figure 8. Basic dimensions are determined and limites of them are obtained. Both theoretical and approximate displacements are expressed in terms of the basic dimensions. Secondly, a helical gear pump is studied. The helical gear can be discussed in the same way as the spur gear by new basic dimensions. Finally some test gear pumps are made and tested. Test prove that this gear pump has excellent performance and durability.

Copyright © 1983 by ASME
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