An Ultrasonic Motor Using Thrust Bearing with Dimple Structure on the Friction Surface

Takaaki Ishii; Hiroki Yamawaki; Hidetoshi Ohuchi

doi:10.4028/www.scientific.net/KEM.649.54

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 649An Ultrasonic Motor Using Thrust Bearing with...

An Ultrasonic Motor Using Thrust Bearing with Dimple Structure on the Friction Surface

Abstract:

An ultrasonic motor using thrust ball bearing with dimple structure on the friction surface has been proposed. The bearing balls are rotated by the friction force caused by the ultrasonic vibration of the stator, and transfer torque to the rotor. The dimple structure on the sliding surface can hold the ball position and rotate the balls and the rotor without a retainer. The newly proposed motor can avoid the friction loss between balls and the retainer. The balls of 2.4 mm in radius are used and the radii of the curvature of the dimples of 2.0 mm and 3.0 mm are used in this research. The radius difference changes the contact condition between the balls and the dimple structure. Fundamental motor characteristics are measured and discussed.

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Periodical:

Key Engineering Materials (Volume 649)

Pages:

54-59

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.649.54

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Online since:

June 2015

Authors:

Takaaki Ishii, Hiroki Yamawaki, Hidetoshi Ohuchi

Keywords:

Dimple, Friction Surface, Thrust Bearing, Ultrasonic Motor

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References

[1] T. Ishii, T. Shinkoda, S. Ueha and K. Nakamura, Efficiency improvement of an ultrasonic motor driven with rectangular waveform, Jpn. J. Appl. Phys., vol. 35, no. 5B, pp.3281-3285, (1996).

DOI: 10.1143/jjap.35.3281

Google Scholar

[2] T. Ishii, H. Takahashi, K. Nakamura and S. Ueha, A low-wear driving method of ultrasonic motors, Jpn. J. Appl. Phys., vol. 38, no. 5B, pp.3338-3341, (1999).

DOI: 10.1143/jjap.38.3338

Google Scholar

[3] W. Qiu, Y. Mizuno, D. Koyama and K. Nakamura, Efficiency improvement of hybrid transducer-type ultrasonic motor using lubricant, IEEE Trans. Ultrason. Ferroelectr. Freq. Contr., vol. 60, no. 4, pp.786-794, (2013).

DOI: 10.1109/tuffc.2013.2627

Google Scholar

[4] K. Nakamura, M. Kurosawa and S. Ueha, Characteristics of a hybrid transducer-type ultrasonic motor, IEEE Trans. Ultrason. Ferroelectr. Freq. Contr., vol. 38, no. 3, pp.188-193, (1991).

DOI: 10.1109/58.79602

Google Scholar

[5] K. Nakamura, M. Kurosawa and S. Ueha, Design of a hybrid transducer type ultrasonic motor, IEEE Trans. Ultrason. Ferroelectr. Freq. Contr., vol. 40, no. 4, p.394–401, (1993).

DOI: 10.1109/58.251288

Google Scholar

[6] T. Ishii, H. Yamawaki and K. Nakamura, An ultrasonic motor using thrust bearing for friction drive with lubricant, IEEE Joint UFFC, EFTF and PFM Symposium, p.197–200, (2013).

DOI: 10.1109/ultsym.2013.0051

Google Scholar