IJAT Vol.10 No.4 pp. 549-556
doi: 10.20965/ijat.2016.p0549


Study of Rotary-Linear Ultrasonic Motor Output Shafts

Ayato Kanada, Tomoaki Mashimo, and Kazuhiko Terashima

Toyohashi University of Technology
1-1 Hibarigaoka, Tempaku-cho, Toyohashi, Aichi 441-8580, Japan

Corresponding author,

January 5, 2016
May 6, 2016
July 5, 2016
actuator, piezoelectricity, multi-DOF, preload mechanism

We propose output shafts with a preload generation mechanism to improve the output torque and thrust force of the rotary-linear ultrasonic motor. The stator is comprised of a single metallic cube with a through-hole, and the output shafts are inserted into the hole to generate motion in both its circumferential and axial directions arbitrarily. In this paper, two design concepts for optimizing the preload using the output shafts are examined. The first involves a cylinder shaft with micron-order accuracy diameter realization. The cylinder shaft makes contact with the entire inner surface of the stator and generates a preload between the stator and shaft. The second concept employs a spring shaft having a slightly larger diameter than the stator hole, which expands in the radial direction and generates the preload. Experiments show that these design concepts improve the output torque and thrust force.

Cite this article as:
A. Kanada, T. Mashimo, and K. Terashima, “Study of Rotary-Linear Ultrasonic Motor Output Shafts,” Int. J. Automation Technol., Vol.10, No.4, pp. 549-556, 2016.
Data files:
  1. [1] E. A. Mendrela and E. Gierczak, “Double-winding rotary-linear induction motor,” IEEE Trans. on Energy Conversion, Vol.EC-2, pp. 47-54, 1987.
  2. [2] S. Makino, T. Shikayama, I. Murokita, H. Yahara, and M. Ohto, “Direcet Drive θ-Z Motor for Rotary and Linear Motion,” The Institute of Ekectrical Engineers of Japan, Vol.134, No.7, pp. 683-690, 2014.
  3. [3] Koganei Corporation, [accessed Dec. 22, 2015]
  4. [4] N. Iwatsuki et al., “Precision positioning with a rotary-linear motor driven by a pair of 2-D ultrasonic actuators,” in Micro Machine and Human Science, 1996., Proc. of the Seventh Int. Symposium, pp. 183-188, 1996.
  5. [5] S. Sato et al., “Design of a precision rotary-linear dual-axis positioning system with a surface encoder,” presented at the Proc. of SPIE, Int. Symposium on Optomechatronic Technologies (ISOT 2005) Sapporo, Japan, 2005.
  6. [6] Y. Chen et al., “Study of a Mini-Ultrasonic Motor with Square Metal Bar and Piezoelectric Plate Hybrid “ Japanese J. of Applied Physics, Vol.45, pp. 4780-4781, 2006.
  7. [7] Y. Zhang, G. Liu, and J. Hesselbach, “On Development of a Rotary-Linear Actuator Using Piezoelectric Translators,” IEEE/ASME Trans. on Mechatronics, Vol.11, No.5, pp. 647-650, 2006.
  8. [8] S. Tuncdemir et al., “Design of Translation Rotary Ultrasonic Motor with Slanted Piezoelectric Ceramics,” Japanese J. of Applied Physics, Vol.50, pp. 027301, 2011.
  9. [9] T. Mashimo and S. Toyama, “Rotary-linear piezoelectric actuator using a single stator,” IEEE Trans. on Ultrasonics, Ferroelectrics and Frequency Control, Vol.56, pp. 114-120, 2009.
  10. [10] T. Mashimo and S. Toyama, “Rotary-Linear Piezoelectric Microactuator with a Cubic Stator of Side Length 3.5mm,” IEEE Trans. Ultrasonics, Ferroelectrics and Frequency Control, 2010.
  11. [11] T. Sashida and T. Kenjo, “Introduction to ultrasonic motors,” New York: Oxford University Press, 1993.
  12. [12] T. Mashimo and S. Toyama, “Vibration analysis of cubic rotary-linear piezoelectric actuator,” IEEE Trans. on Ultrasonics, Ferroelectrics and Frequency Control, Vol.58, pp. 844-848, 2011.
  13. [13] T. Funakubo et al., “Ultrasonic Linear Motor Using Multilayer Piezoelectric Actuators,” Japanese Journal of Applied Physics. Pt. 1, Regular papers & short notes, Vol.34, pp. 2756-2759, 1995.
  14. [14] T. Funakubo and Y. Tomikawa, “Characteristics of 10 mm Multilayer L1-F2 Mode Vibrator and Application to a Linear Motor,” Japanese Journal of Applied Physics, Vol.42, pp. 3002-3006, 2003.
  15. [15] K. Takemura and T. Maeno, “Design and control of an ultrasonic motor capable of generating multi-DOF motion,” Mechatronics, IEEE/ASME Trans. on, Vol.6, pp. 499-506, 2001.
  16. [16] M. Aoyagi et al., “A novel multi-degree-of-freedom thick-film ultrasonic motor,” Ultrasonics, Ferroelectrics and Frequency Control, IEEE Trans. on, Vol.49, pp. 151-158, 2002.

*This site is desgined based on HTML5 and CSS3 for modern browsers, e.g. Chrome, Firefox, Safari, Edge, IE9,10,11, Opera.

Last updated on Dec. 11, 2018