Supersonic motor

Abstract

Abstract PURPOSE:To facilitate manufacture, by forming a groove of random width in the sideface of Langevin type oscillation chip such that the longitudinal vibration and the torsional vibration have identical resonant frequencies. CONSTITUTION:A piezoelectric ceramic vibration chip 1 for a supersonic motor is held between long and short metal blocks 2, 3 and secured through a bolt 4 having threaded opposite ends thus constituting an asymmetric bolt tightening Langevin type vibration chip 5. A groove 6 is made in the sideface of the long metal block in order to match the resonant frequencies of longitudinal vibration and torsional vibration, thus taking out oval vibration from the endface of the groove 6. A ball 8 supported on a rotary body 7 is contacted with the endface 6a of the groove 6, While a press board 9 and a spring 10 are provided. Upon application of A.C. field onto the piezoelectric vibration chip 1, resonant sides of longitudinal vibration and torsional vibration coincide on the endface 6a of the groove 6 to produce oval vibration so as to rotate the ball 8 thus rotating the rotary body 7.

Inventors

• 👤 Keisuke Honda

Bibliographic Details