| 摘要 |
1,125,567. Ultrasonic wave couplings. AEROPROJECTS, Inc. 3 Dec., 1965 [16 March, 1965], No. 51432/65. Heading H4J. [Also in Division B3] A coupling member in an ultrasonic welding or extrusion apparatus comprises a cylindrical "reed" 14 excited so as to vibrate in a torsional mode and, removably coupled to the reed, an acoustic transformer 18 consisting of a solid or hollow body which is tapered according to the law I x = I i e-α x where I is the moment of inertia (second moment of area) at any distance X from the input end i of the transformer. The reed is driven by one or, two or more suitably electrically or mechanically phased magnetostrictive or ceramic piezo electric transducers 24a via any conventional n#/ 2 coupler 22a. The reed is clamped metallurgically by a massive support 12 located at an odd multiple of a quarter wavelength in torsion from the free end 11. The transformer and reed are locked together in a stress free manner by means of a set of opposed generally radially disposed teeth and clamping bolts. A hollow, cicrular, elliptic triangular or rectangular work tip 20 is attached metallurgically to the transformer, whereby corresponding welds can be obtained. A suitable ceramic transducer is described in Specification 1,072,066. Reference to U.S. Specifications 3,131,515 and 2,921,372 is made in the discussion on prior art torsional mode couplers. Prior use of torsional mode welding apparatus is discussed in connection with Specifications 895,413, 895,416 and 1,009,623. |
