超声辅助磨料射流变幅杆设计  

Design of the horn for ultrasonically assisting the abrasive water jet

作　　者：顾胜宇 张丹[1] 朱永成 左敦稳[1] 吴铭烽 GU Sheng-yu;ZHANG Dan;ZHU Yong-cheng;ZUO Dun-wen;WU Ming-feng(School of Mechanical and Electrical Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016;Kunshan Kersen Science&Technology Co.,Ltd.,Kunshan 215300)

机构地区：[1]南京航空航天大学机电学院,江苏南京210016 [2]昆山科森科技股份有限公司,江苏昆山215300

出　　处：《机械设计》2019年第12期21-27,共7页Journal of Machine Design

摘　　要：变幅杆是超声辅助加工中的重要零部件之一,用于辅助加工的变幅杆通常带有工具头负载,研制存在一定难度。通过对带负载的用于超声辅助磨料射流的变幅杆研究分析,在使用解析法设计其初始结构尺寸的基础上,借助有限元软件选择节点耦合方式进行仿真,采用控制变量的原则获得各结构参数对系统频率的影响,修整变幅杆装配体模型,经过试验测定,发现该种处理方式及修整方法获得的仿真结果与实际测定相比,谐振频率误差在1%以内,振幅测定误差在2%以内,为研制带有复杂工具头的变幅杆提供了参考。The horn is one of the important components in ultrasonic-assisted machining.The horn used for auxiliary machining usually has the load of tool head,which is difficult to develop.Based on the analysis on the loaded horn used for ultrasonically assisting the abrasive water jet,the analytic method is applied to identify the horn’s initial structural size,and the finite-element software is used to select the mode of node coupling for simulation.Besides,the principle of controlling variables is adopted to identify the influence of structural parameters on the system frequency,and the horn-assembly model is trimmed.Based on the experimental measurement,the simulation results obtained by the above-mentioned method and the trimming model are compared with those obtained by the actual measurement;it’s found that,the resonant frequency error is less than 1%,and the amplitude measurement error is less than 2%,which provides reference for the development of the horn with a complex tool head.

关 键 词：变幅杆 工具头负载 节点耦合 修整模型 

分 类 号：TG663[金属学及工艺—金属切削加工及机床] TB559[理学—物理]