Large-amplitude longitudinal-flexural ultrasonic vibration cutting device

Abstract

The invention discloses a large-amplitude longitudinal-flexural ultrasonic vibration cutting device. The large-amplitude longitudinal-flexural ultrasonic vibration cutting device comprises an ultrasonic vibration transducer, a first-stage amplitude changing rod, a second-stage amplitude changing rod, a third-stage amplitude changing rod, a cutter head, an ultrasonic power supply and a protection shell, wherein the ultrasonic vibration transducer comprises a bolt and also comprises a rear cover plate, piezoelectric ceramic pieces, an electrode piece and the first-stage amplitude changing rod which are successively sleeved on the bolt; the back rear cover and the first-stage amplitude changing rod are used for connecting and pressing the rear cover, the piezoelectric ceramic pieces, the electrode piece and the first-stage amplitude changing rod through the bolt; the second-stage amplitude changing rod is arranged at the front end of the first-stage amplitude changing rod; the third-stageamplitude changing rod is arranged at the front end of the second-stage amplitude changing rod; the cutter head is arranged at the front end of the third-stage amplitude changing rod; an included angle alpha between a central axis of the cutter head and an axis of the third-stage amplitude changing rod is 80-100 degrees; a cutting edge is arranged at the edge of the cutter head; and a triangularsawtooth structure with a sharp tip facing to a tip end of the cutter head is arranged at the edge of the cutting edge. The large-amplitude longitudinal-flexural ultrasonic vibration cutting device has the advantages of high power capacity, simple structure, high energy conversion efficiency, large amplitude and stable operation performance.

Description

technical field [0001] The invention relates to the field of ultrasonic vibration utilizing the inverse piezoelectric effect of piezoelectric ceramics, in particular to a large-amplitude longitudinal bending ultrasonic vibration cutting device. Background technique [0002] Ultrasonic cutting is a new technology that uses ultrasonic piezoelectric transducers to drive cutting tools to generate ultrasonic frequency vibrations, and transmits collision and impact energy to the medium to be cut, causing the material to be cut to be fatigued and broken to achieve the purpose of cutting. Ultrasonic cutting can process carbon fiber, glass fiber, Kevlar fiber, various honeycomb composite materials and hard and brittle materials such as optical glass, silicon crystal, ceramics, etc. more efficiently and accurately. In addition, because the cutting tool in contact with the biological tissue vibrates at a certain ultrasonic frequency, it can vaporize the water in the biological tissue, ...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a new type of large-amplitude longitudinal-bending ultrasonic vibration cutting device, the purpose of which is to overcome the deficiency of low amplitude in the existing ultrasonic vibration transducers and provide a relatively large-amplitude ultrasonic vibration cutting device

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