摘要
针对橡胶等难切割材料的加工问题,该文设计了一种基于夹心式压电换能器的超声刀。根据振动及波动理论设计了夹心式压电换能器及其变幅杆。利用有限元分析软件ANSYS 14.0对超声刀进行了模态分析,得到了超声刀工作模态的谐振频率。最后搭建实验测试平台,通过实验测出了样刀的谐振频率,并进行了功率和切割效果测试。实验结果表明,随着负载的增加,超声刀的功率呈线性变化,且负载相同时,输出功率随驱动电流的增大而增大,参考电流分别为200 mA、250 mA、300 mA时,对应切割7张纸的功率分别为3.7 W、4.1 W、5.9 W,功率特性良好。与普通刀具相比,超声刀切割时,切口更光滑整齐,切割效果良好。
Aiming at the processing problem of difficult cutting materials such as rubber,an ultrasonic cutter based on sandwiched piezoelectric transducer is designed in this paper.According to the vibration and wave theory,the sandwiched piezoelectric transducer and the amplitude transformer are designed.The modal analysis of the ultrasonic cutter is carried out by using ANSYS 14.0,and the resonant frequency of the working mode of the ultrasonic cutter is obtained.Finally,an experimental test platform was built,and the resonant frequency of the sample cutter was measured,and the power and cutting effect were tested.The experimental results show that with the increase of the load,the power of the ultrasonic cutter changes linearly,and the output power increases with the increase of the driving current when the load is the same.When the reference current is 200 mA,250 mA and 300 mA,the power corresponding to cutting seven sheets of paper is 3.7 W,4.1 W and 5.9 W,respectively,and the power characteristics are good.Compared with the ordinary cutting tools,the incision is smoother and neat when cutting with the ultrasonic cutter and has better cutting effect.
作者
张小辉
程宗辉
孙同明
李永彬
舒送
管博文
李华
贺良国
ZHANG Xiaohui;CHENG Zonghui;SUN Tongming;LI Yongbin;SHU Song;GUAN Bowen;LI Hua;HE Liangguo(State-owned Wuhu Machinery Factory, Wuhu 241007,China;School of Mechanical Engineering, Hefei University of Technology, Hefei 230009, China)
出处
《压电与声光》
CAS
北大核心
2021年第5期632-635,共4页
Piezoelectrics & Acoustooptics
基金
中国博士后科学基金资助项目(2020M671841)
安徽省自然科学面上基金资助项目(2008085ME154)。
关键词
压电换能器
变幅杆
共振
超声刀
有限元分析
piezoelectric transducer
amplitude transformer
resonance
ultrasonic cutter
finite element analysis
