A giant magnetostrictive rotating ultrasonic vibration device

Abstract

The invention discloses a giant magnetostriction rotary ultrasonic vibration device comprising a knife handle, a primary winding, and two sets of bearing systems. A secondary winding is arranged on the knife handle, and the primary winding and the secondary winding are connected through inductive coupling; a giant magnetostriction transducer is installed at the lower part of the knife handle; thegiant magnetostriction transducer is sleeved with the two sets of bearing systems; and the bottoms of two sets of bearing systems are opposite and the two sets of bearing systems are connected by screw threads. An air cooling system is adopted to cool the giant magnetostriction transducer, and the problem of heat generation of the giant magnetostriction transducer in actual processing can be effectively solved; copper stranded wires are adopted by driving coils, compared with commonly used copper wires, the copper stranded wires are more conducive to heat dissipation, and the operating temperature of the coils is reduced; a thin-walled sleeve inside a transducer shell and a flange are arranged to ensure the coaxiality of the flange and the transducer shell, and the giant magnetostriction rod is subjected to uniform pre-tightening force; and the sleeve is arranged to facilitate the outward diffusion of heat generated by the giant magnetostriction rod and the coils.

Description

technical field [0001] The invention belongs to the technical field of ultrasonic processing equipment, and in particular relates to a giant magnetostrictive rotating ultrasonic vibration device. Background technique [0002] At present, in the field of ultrasonic machining technology, piezoelectric ceramics are widely used as excitation materials for ultrasonic transducers. However, due to the relatively small power density of piezoelectric ceramics, and the shortcomings of overheating, failure, and fragility, their application is limited. Applications in high-power occasions. [0003] Giant magnetostrictive material is a new type of functional material with large magnetostriction coefficient, high power capacity, fast response speed, relatively stable performance, and large electromechanical coupling coefficient. It is the research direction of high-power, large-amplitude ultrasonic machining system. Due to the hysteresis effect and eddy current effect of the giant magne...

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Problems solved by technology

Due to the hysteresis effect and eddy current effect of the giant magnetostrictive material, and the excitation coil must work at high frequency, a large amount of heat will be generated, which seriously affects the performance of the giant magnetostrictive transducer

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