112 段付き複合曲げ振動棒を用いた大容量の超音波複合振動源の振動特性および保持方法について : 大容量の複合振動源の開発

概要

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The ultrasonic complex vibration systems with elliptical to circular locus are effective and essential for new high power applications in various industries including automobile production and also joining of aluminum window sashes, etc., but large capacity complex vibration sources are required. Configurations of large capacity ultrasonic complex vibration sources with a stepped complex transverse vibration rod using multiple transducers are proposed and studied. Transverse vibration rods were installed normally in the both sides of the center part of the circular longitudinal vibration disk (220mm in diameter) that six 27kHz driving longitudinal transducers (40mm in diameter) were installed its outer side surface. The complex transverse vibration rod has two stepped parts for vibration velocity transformation (N=4 to 7). Two transducers installed in opposite part are driven longitudinally with the same vibration phase and the transducer pair and the disk part are driven in 2 wavelengths longitudinal vibration mode. Three transducer pairs were driven simultaneously using three transformers, three 500W static induction transistor power amplifiers and an arbitrary waveform generator with three output voltages of phase difference 120°, and almost circular vibration locus was obtained at the free edge of the complex transverse vibration rod.
一般社団法人日本機械学会の論文
2003-06-04