| 摘要 |
PURPOSE:To prevent production of abrasion dust and irritation of a sliding surface due to chipping of a vibrator by carbon fiber, to reduce irregularity of the output of a vibration wave motor, and to improve durability of the motor by making the hardness of a sliding member of a vibrator not less then Hv 600. CONSTITUTION:The upper surface of comb-teeth of a friction-contact surface has a hardened section 1c with a coat having Vickers hardness not less than Hv 600. The sliding surface of a vibrator 1 and a sliding member 2b of a mover 2 are in pressure-contact with each other by applying an axial force of, for example, 10kgf. by a pressing means not shown. An AC voltage at the frequency inherent to the vibrator 1 is applied to two groups of piezoelectric elements 1a consisting of piezoelectric elements polarized alternately in the thickness direction. And, then, the vibrator 1 resonates and a progressive vibration wave is generated in the direction toward the sliding surface and the mover 2 in pressure-contact with the surface of the vibrator 1, rotates by a friction force produced between the sliding surfaces of the vibrator 1 and the sliding member 2b. |
