PREPARED FOR MAILLIARD RANCH

PCT No. PCT/JP94/00533 Sec. 371 Date Nov. 30, 1994 Sec. 102(e) Date Nov. 30, 1994 PCT Filed Mar. 31, 1994 PCT Pub. No. WO94/23935 PCT Pub. Date Oct. 27, 1994An object of the invention is to provide a tool horn integrally formed into one unit of a vibration converting portion (1) and a torsional vibration tool portion (2), which can convert longitudinal vibration in an ultrasonic processing device (DE) to torsional vibration, wherein said vibration converting portion (1) is provided with a disk-shaped main body (11), in which flexural vibrations are induced when ultrasonic vibrations concerned with longitudial direction are imparted thereto, with one side thereof forming one pair of projected frames (12) attachable to the longitudial vibration horn and the other side thereof forming a connecting rib (14) connected to the torsional vibration tool portion (2), said connecting rib (14) being disposed in a relation occupying the diagonal position to said projected frames (12).