杯形工具复合变幅杆设计及振动特性分析  

Design of a cup horn and its vibration characteristics analysis

作　　者：陈汇资 赵波[1] 赵金坠 高国富[1] 

机构地区：[1]河南理工大学机械与动力工程学院,河南焦作454000 [2]郑州磨料磨具磨削研究所有限公司,郑州450007

出　　处：《振动与冲击》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)

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.

关 键 词：硬脆材料 曲面加工 杯形工具复合变幅杆 有限元 谐振频率 

分 类 号：TB559[理学—物理]