Gerotor is generated by an oval shape generating curve, which is attached to a large pitch circle rolling on an inside smaller one. For gerotor design, existing methods are able to handle arc-based generating curves with switch angle assignability. However, when dealing with nonarc-based generating curves, the current methods do not provide switch angle assignability. The switch angle is an important parameter in gerotor kinematics; it determines the angular conjugating range on the generating curve and affects the rotor profile. In this paper, we developed a deviation-function-based design method. By using this method, users can design and directly assign switch angles to both arc- and nonarc-based gerotors. Analytical formulations of both generating and gerotor profiles are derived and summarized into a detailed algorithm in design steps. Some designed gerotor examples using our method are provided for design and process illustration.
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e-mail: jiayan@ucla.edu
e-mail: dyang@seas.ucla.edu
e-mail: shihhsi@seas.ucla.edu
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January 2009
Research Papers
A New Gerotor Design Method With Switch Angle Assignability
Jia Yan,
Jia Yan
Graduate Student
Department of Mechanical and Aerospace Engineering,
e-mail: jiayan@ucla.edu
University of California
, Los Angeles, CA 90095
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Daniel C. H. Yang, Professor,
Daniel C. H. Yang, Professor
Department of Mechanical and Aerospace Engineering,
e-mail: dyang@seas.ucla.edu
University of California
, Los Angeles, CA 90095
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Shih-Hsi Tong
Shih-Hsi Tong
Lecturer
Department of Mechanical and Aerospace Engineering,
e-mail: shihhsi@seas.ucla.edu
University of California
, Los Angeles, CA 90095
Search for other works by this author on:
Jia Yan
Graduate Student
Department of Mechanical and Aerospace Engineering,
University of California
, Los Angeles, CA 90095e-mail: jiayan@ucla.edu
Daniel C. H. Yang, Professor
Department of Mechanical and Aerospace Engineering,
University of California
, Los Angeles, CA 90095e-mail: dyang@seas.ucla.edu
Shih-Hsi Tong
Lecturer
Department of Mechanical and Aerospace Engineering,
University of California
, Los Angeles, CA 90095e-mail: shihhsi@seas.ucla.edu
J. Mech. Des. Jan 2009, 131(1): 011006 (8 pages)
Published Online: December 15, 2008
Article history
Received:
April 13, 2008
Revised:
July 30, 2008
Published:
December 15, 2008
Citation
Yan, J., Yang, D. C. H., and Tong, S. (December 15, 2008). "A New Gerotor Design Method With Switch Angle Assignability." ASME. J. Mech. Des. January 2009; 131(1): 011006. https://doi.org/10.1115/1.3013442
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