This paper presents the design, modeling, and motion control of the noncircular turning process for camshaft machining. The cam profile tracking performance requirements are first characterized to meet industry standards. Based on these requirements, a unique test fixture using state-of-the-art actuation and sensing technologies is designed for the noncircular turning process. Modeling of the electrohydraulic servo valve, actuator, and sensors is conducted based on their frequency responses. Digital motion control that achieves asymptotic cam profile tracking while maintaining system robust stability is designed and implemented on the turning test fixture. Spindle speed can be chosen depending on the required profile tracking accuracy with higher speed rendering higher machining rate for rough turning and lower speed rendering higher accuracy for finish turning. Experimental results of turning a variety of cam profiles show that the tracking error is less than for spindle speed at and is less than for spindle speed at or .
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Design, Modeling, and Motion Control of the Noncircular Turning Process for Camshaft Machining
Tsu-Chin Tsao,
Tsu-Chin Tsao
Mechanical and Aerospace Engineering Department,
University of California Los Angeles
, 137-30 Engineering IV 420 Westwood Plaza, Los Angeles, CA 90095-1597
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Zongxuan Sun,
Zongxuan Sun
Mechanical Engineering Department,
University of Minnesota
, Twin Cities Campus, 111 Church Street S.E., Minneapolis, MN 55455
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Reed D. Hanson,
Reed D. Hanson
Seagate Technologies
, 1280 Disc Drive, Shakopee, MN 55379
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Alexanda Babinski
Alexanda Babinski
Western Digital Corporation
, 20511 Lake Forest Drive, Lake Forest, CA 92630
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Tsu-Chin Tsao
Mechanical and Aerospace Engineering Department,
University of California Los Angeles
, 137-30 Engineering IV 420 Westwood Plaza, Los Angeles, CA 90095-1597
Zongxuan Sun
Mechanical Engineering Department,
University of Minnesota
, Twin Cities Campus, 111 Church Street S.E., Minneapolis, MN 55455
Reed D. Hanson
Seagate Technologies
, 1280 Disc Drive, Shakopee, MN 55379
Alexanda Babinski
Western Digital Corporation
, 20511 Lake Forest Drive, Lake Forest, CA 92630J. Dyn. Sys., Meas., Control. May 2008, 130(3): 031005 (7 pages)
Published Online: April 18, 2008
Article history
Received:
November 19, 2002
Revised:
December 14, 2007
Published:
April 18, 2008
Citation
Tsao, T., Sun, Z., Hanson, R. D., and Babinski, A. (April 18, 2008). "Design, Modeling, and Motion Control of the Noncircular Turning Process for Camshaft Machining." ASME. J. Dyn. Sys., Meas., Control. May 2008; 130(3): 031005. https://doi.org/10.1115/1.2907350
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