Giant magnetostictive ultrasonic transducer

An ultrasonic transducer, giant magnetostrictive technology, applied in the direction of the fluid using vibration, etc., can solve the problems affecting the performance of the giant magnetostrictive transducer, and achieve the effect of solving heat

Active Publication Date: 2018-09-25
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

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  • Giant magnetostictive ultrasonic transducer

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Embodiment Construction

[0020] The present invention will be described in detail below with reference to the drawings and specific embodiments.

[0021] The giant magnetostrictive ultrasonic transducer of the present invention, such as figure 1 As shown, the giant magnetostrictive ultrasonic transducer,

[0022] Including a tool holder 1, a central through hole is provided along the axis of the tool holder 1, a secondary winding 3 is fixed on the tool holder 1 by a set screw 4, and a primary winding is provided on the tool holder 1 relative to the secondary winding 3 2. The primary winding 2 is fixed on the machine tool, the primary winding 2 is connected to the ultrasonic generator through lead wires, and the secondary winding 3 and the primary winding 2 are connected through inductive coupling to facilitate the transmission of electric energy;

[0023] The lower part of the tool holder 1 has an accommodating cavity. The accommodating cavity is provided with a zigzag magnetic permeable sleeve 8. The lower ...

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PUM

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Abstract

The invention discloses a giant magnetostictive ultrasonic transducer which comprises a rear cover plate, a magnetism conduction block, a permanent magnet, a giant magnetostictive rod and an amplitudevariable rod, wherein the components are connected by using bolts; a pre-tightening force is provided by the bolts; a magnetism conduction sleeve, a magnetism conduction piece and the amplitude variable rod are fixed by using a screw and a stem; holes are formed in the middles of both the bolts and the amplitude variable rod; a groove is formed in the magnetism conduction piece; certain gaps areformed between a rear cover plate and the magnetism conduction sleeve, and between the giant magnetostictive telescopic rod and a coil. When a transducer is cooled by using a coolant, a hose is connected between the bolt and a central hole of the stem. By adopting the giant magnetostictive ultrasonic transducer, the transducer can be cooled by using a cooling gas or the coolant, a cooling water tube or a cooling water jacket can be also arranged between the coil and the giant magnetostictive telescopic rod to cool the transducer, the problem of heating of the transducer can be effectively solved while the transducer is rotated at a high speed, temperatures of the transducer can be controlled to fluctuate within a very small range, and the transducer can work stably.

Description

Technical field [0001] The invention belongs to the technical field of ultrasonic processing equipment, and specifically relates to a giant magnetostrictive ultrasonic transducer. Background technique [0002] At present, in the field of ultrasonic processing technology, piezoelectric ceramics are widely used as excitation materials for ultrasonic transducers. However, piezoelectric ceramics have relatively low power density, and have disadvantages such as overheating failure and fragility, which limit their use Applications in high-power applications. [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 beneficial to realize high-power and large-amplitude ultrasonic vibration. Due to the hysteresis effect and eddy current effect of the giant magnetostrictive material, and the excitation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B06B1/08
CPCB06B1/08B06B2201/58
Inventor 李鹏阳刘强
Owner XIAN UNIV OF TECH
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