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A new piezoelectric ceramic longitudinal-torsional composite ultrasonic vibrator for wire drawing

机译：新型拉丝压电陶瓷纵扭复合超声振子

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摘要

This paper presents a new sandwich longitudinal torsional (L&T) composite ultrasonic vibrator for wire drawing. The characteristic of this composite ultrasonic vibrator is driven by an axially poled piezoceramic stack, which is greatly different from the conventional composite ultrasonic vibrator driven by two or more piezoceramic stacks. Four uniform slanting grooves were cut off at the end part of the ultrasonic vibrator to transform the longitudinal ultrasonic vibration into an L&T composite motion. The effects of slanting grooves on the resonance frequency, amplitudes of longitudinal and torsional vibration were analyzed by the finite element method. Experiments were performed to verify the above simulation results. The experimental results met well with the theoretical results. It indicates that L&T composite ultrasonic vibration can be achieved by one piezoceramic stack, and applied in wire drawing. The present work provides a new methodology for ultrasonic wire drawing. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
机译：本文提出了一种用于拉丝的新型三明治式纵向扭转（L＆T）复合超声振动器。这种复合超声振动器的特性由轴向极化的压电陶瓷叠层驱动，这与由两个或多个压电陶瓷叠层驱动的常规复合超声振动器有很大的不同。在超声振动器的端部切出四个均匀的倾斜槽，以将纵向超声振动转换为L＆T复合运动。用有限元方法分析了斜槽对共振频率，纵向和扭转振动幅度的影响。进行实验以验证上述仿真结果。实验结果与理论结果吻合良好。这表明L＆T复合超声振动可以通过一个压电陶瓷叠层实现，并应用于拉丝。目前的工作提供了一种超声波拉丝的新方法。 （C）2015 Elsevier Ltd和Techna Group S.r.l.版权所有。

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