Production of magnetic planetary gear and measurement of basic properties

Issue title: Selected Papers from the 15th International Symposium on Applied Electromagnetics and Mechanics (ISEM 2011)

Article type: Research Article

Authors: Ando, Yoshinori^{a; *} | Ugajin, Takatoshi^a | Baba, Akira^a | Fujita, Tomoyuki^a | Nagaya, Kousuke^b

Affiliations: [a] Department of Mechanical System Engineering, Gunma University, Kiryu, Gunma, Japan | [b] Oita Industrial Creation Organization, Oita, Japan

Correspondence: [*] Corresponding author: Yoshinori Ando, Department of Mechanical System Engineering, Gunma University, Tenjin-cho 1-5-1, Kiryu Gunma 376-8515, Japan. Tel.: +81 277 30 1566; Fax: +81 277 30 1567; E-mail: ando@gunma-u.ac.jp

Abstract: A non-contact gear mechanism is important for the non-contact transmission of a torque and a motion. In this paper, a magnetic gear system without contact which requires no lubricant oil is proposed. The driving gear consists of some iron discs with gear teeth whose shape is an involute curve. The discs of the follower gear are inserted in the gaps between the discs of the driving gear, and the attractive forces between the discs generate the torque transmission. Using the magnetic gear system, a magnetically connected planetary gear device is developed. Moreover we measure and study the slip torque as static property, and the step-out torque as dynamic property due to implication of rotational speed.

Keywords: Magnetic gear, layered discs, planetary gear, magnetic force, torque

DOI: 10.3233/JAE-2012-1571

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 39, no. 1-4, pp. 1005-1011, 2012