Resonator for joining metal members together utilizing ultrasonic vibration and a joining tool having distal end projecting laterally

摘要

A resonator (1) for joining metal members utilizing ultrasonic vibration includes an ultrasonic horn (2) having a length of at least half wavelength of a resonance frequency of ultrasonic vibration transmitted from a vibrator (4), and a joining tool (3) provided on the ultrasonic horn (2) so as to project in a direction normal to a vibration transmission direction of the ultrasonic horn (2) at a position of a point of a maximum vibration amplitude of the ultrasonic horn (2). The joining tool (3) is formed into a linear bar made of a material excellent in acoustic property and is provided on a distal end (11) thereof with a tool head (12) projecting laterally.