ULTRASONIC TRANSDUCER SYSTEM

摘要

A transducer stack comprises rings of piezo-electric ceramic alternating with metal electrodes along a threaded central shaft extending from a titanium back plate. A spacer element threaded on to the shaft holds the ceramic rings and electrodes in compression against the back plate. The transducer stack is mountable eccentrically to a horn of an ultrasonically-vibratable tool, away from an axis of an elongate waveguide extending from the horn. The transducer stack may vibrate in a flexural mode perpendicular to the waveguide, generating torsional mode ultrasonic vibrations in the horn and waveguide, or in a flexural mode parallel to the waveguide, generating longitudinal mode ultrasonic vibrations in the horn and waveguide. <0 14 -32