Ultrasonic cutting tool

The invention provides an ultrasonic cutting tool. The ultrasonic cutting tool comprises a supporting base, a cutting tool body and a cutting tool body, eight insulating films; four end cover plates; at least four piezoelectric ceramic pieces and a corresponding number of electrode plates; one top clamp; one bottom clamp; one cutter; and a plurality of different sizes and types of screws are provided. According to the ultrasonic cutting tool, the sizes of the supporting base and the end cover plate are designed through the bending vibration mode of the overall structure so as to generate resonance, the amplitude is transmitted to the output end of the tool through excitation of the piezoelectric ceramic piece, and therefore a cut object is cut. 本发明提供了一种超声切割刀具，该超声切割刀具包括：1个支撑座；8片绝缘膜；4个端盖板；至少4块压电陶瓷片以及对应数量的电极片；1个顶部夹具；1个底部夹具；1个刀具；数枚不同尺寸、种类的螺钉。该超声切割刀具通过整体结构的弯振模态设计支撑座、端盖板的尺寸以产生谐振，通过对压电陶瓷片的激励将振幅传导至刀具输出端，以此对被切割进行切割。