| 摘要 |
PURPOSE:To reduce loss through simple structure by exciting second order flex vibration crossing perpendicularly with a vibration cross body. CONSTITUTION:An ultrasonic actuator comprises vibration cross bodies 101a-101c where rectangular bars having square cross section are crossing perpendicularly in the center and a base 102, and a plurality of nodes, i.e. fixing sections 103, in the central section of the vibration body are arranged two dimensionally on the base 102. The vibration body 101 comprises a resilient cross body 104 and piezoelectric bodies 105a-105d, where respective rectangular bars produce second order flex vibration. An oval locus is provided through the two dimensional vibration and mechanical output is taken out from the vicinity of the antinode of vibration. |
