摘要
针对硬脆材料曲面加工过程中加工精度差、效率低、加工费用高的问题,结合理论分析与有限元法,设计了一种适用于硬脆材料曲面高精度加工的超声杯形工具复合变幅杆。对所设计的变幅杆进行了阻抗特性分析和振动性能测试,结果显示变幅杆结构合理、振动效果良好;并通过有限元与试验的对比分析,探究杯形头的壁高、底厚、内径对杯形工具复合变幅杆谐振频率的影响。结果表明:变幅杆谐振频率随着底厚的增加而增大,随着杯形头壁高、内径的增大而减小,且实测结果与仿真分析较好符合。
Aiming at problems of poor machining precision, low efficiency, and high processing cost in curve surface processing of hard and brittle materials, a kind of ultrasonic cup horn suitable for high precision machining of curve surfaces of hard and brittle materials was designed by combining the theoretical analysis and the finite element method. Afterwards, the impedance characteristic analysis and the vibration performance tests of the designed cup horn were performed. The results showed that the structure of the horn is reasonable and its vibration effect is good. Finally, through the finite element calculation and tests comparative analysis, the influences of wall height, bottom thickness, and inner diameter of the cup shaped head on the cup horn resonant frequencies were studied. The results showed that the resonance frequencies of the horn increase with increase in bottom thickness and decrease with increase in wall height, and inner diameter of the cup shaped head; the test results and the simulation analysis ones agree well each other. © 2017, Editorial Office of Journal of Vibration and Shock. All right reserved.
出处
《振动与冲击》
EI
CSCD
北大核心
2017年第9期159-165,共7页
Journal of Vibration and Shock
基金
国家"863"计划资助项目(2013AA040103)
作者简介
陈汇资男,硕士生,1989年生
通信作者赵波男,教授,博士生导师,1956年生
