• CN：11-2187/TH
  • ISSN：0577-6686
机械工程学报

›› 2004, Vol. 40 ›› Issue (7): 71-74.

• 论文 • 上一篇    下一篇

超声加工用厚电极换能器振子的频率方程研究

戴向国;傅水根;谷诤巍;王先逵   

  1. 清华大学机械系;清华大学基础工业训练中心;清华大学精仪系
  • 发布日期:2004-07-15

STUDY ON FREQUENCY EQUATION OF ONE-THICK ELECTRODE TRANSDUCER FOR ULTRASONIC MACHINING

Dai Xiangguo;Fu Shuigen;Gu Zhengwei;Wang;Xiankui   

  1. Mechanical Engineering Department,Tsinghua University Industrial Training Center, Tsinghua University Precision Instrumental Department, Tsinghua University
  • Published:2004-07-15

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摘要： 旋转超声加工是加工硬脆材料的一种较好方法。为实现长时间连续稳定工作，必须使用厚电极的超声换能器振子。目前，对厚电极换能器振子的研究较少，使用时一般采用近似计算与试验调整相结合的方法。为精确设计厚电极换能器振子，推导了单个厚电极换能器振子的频率方程，并使用模态试验分析和有限元仿真相结合的方法进行了验证，结果表明：在给定的电极厚度范围内，换能器振子的谐振频率误差小于5%，完全满足工程应用的需要。

关键词: 超声加工, 厚电极, 频率方程, 超声换能器振子

Abstract: Rotary ultrasonic machining is an effective way for machining hard and fragile materials. In order to keep the machining reliable longer, thick electrode ultrasonic transducer should be used. Now relevant study is fewer. If needed, thick ultrasonic transducer is designed by both approximate calculation and test adjustment. In order to design the precise transducer, frequency equation of one-thick electrode ultrasonic transducer is induced .In order to verify the equation, both modal experiments and FEM are used, and the results show that：within the given thickness range of electrode, resonance fre-quency error is less than 5%, and the frequency can meet the engineering requirement.

Key words: Thick electrode, Frequency equation, Ultrasonic machining, Ultrasonic transducer

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