带有加工工具的超声复合变幅杆的优化设计  

Ptimum design of acoustic horns with tool for ultrasonic machining using finite-element analysis

作　　者：张可昕[1,2] 张向慧[1,2] 高炬[1,2] 

机构地区：[1]北方工业大学机电工程学院,北京100144 [2]清华大学基础工业训练中心,北京100084

出　　处：《机械设计与制造》2011年第11期33-35,共3页Machinery Design & Manufacture

基　　金：北京市教委科技计划项目资助(KM200810009003)

摘　　要：鉴于传统的带有加工工具的超声复合变幅杆求解方法的不准确性,运用有限元法,设计带有加工工具的复合变幅杆,并对其进行动力学分析,包括模态分析、谐振分析;并在此基础上进行优化设计。在保证其突变处工作应力在其材料许用应力范围的前提下,得到其固有频率等于工作频率时复合变幅杆的最佳放大倍数及谐振长度;运用有限元法,分析了工具头的长度,直径对于整个变幅杆谐振长度、放大倍数的影响,为设计更多的复杂形变幅杆提出了一种新的思路。In view of inaccuracy of the traditional design method of compounded horns with milling tool,the finite-element analysis method is used to design the horns and dynamic analysis including modal analysis,harmonic analysis is carried out;Then optimal design is proceeded in the premise of meeting the safe of working stresses for horn material in mutational areas to obtain the resonance length with the circumstance that natural frequency is equal to operating frequency.Also,with finite-element analysis method,the effects of the length of milling tool on the amplification factor and resonance length of the horns are analyzed,which provides a new method for the design of compounded horns.

关 键 词：超声复合变幅杆 有限元分析 动力分析 谐振长度 优化设计 

分 类 号：TH16[机械工程—机械制造及自动化] V261.92[航空宇航科学与技术—航空宇航制造工程]