压电超声换能器金属外壳切削工艺研究  

Research on the Cutting Process of Metallic Shell for Piezoelectric Ultrasonic Transducer

作　　者：李亚飞 董姝[1] 李瑞峰[1] 鲜晓军[1] 唐盘良[1] 马晋毅[1] LI Yafei;DONG Shu;LI Ruifeng;XIAN Xiaojun;TANG Panliang;MA Jinyi(The 26th Institute of China Electronics Technology Group Corporation,Chongqing 400060,China)

机构地区：[1]中国电子科技集团公司第二十六研究所,重庆400060

出　　处：《压电与声光》2025年第1期69-74,共6页Piezoelectrics & Acoustooptics

摘　　要：为满足金属导电物体探测的要求,采用机械方法切削压电超声换能器金属外壳以形成0.10 mm绝缘台阶。借助有限元仿真软件ANSYS/LS DYNA分析发现,径向切削过程中陶瓷片所受应力为56.35 MPa,远小于轴向切削过程中陶瓷片所受应力216.25 MPa,故在分段叠加切削过程中陶瓷片所受的应力变形明显更小。结合理论分析和切削试验制定了3次叠加径向进刀工艺,优化了金属残留毛刺去除方法,解决了切削过程中频发的换能器匹配透声端面损伤及其与压电陶瓷分层的问题,对于压电超声换能器的应用推广具有重要意义。To ensure the effective detection of metal conductive objects,the end face of the transducer was machined mechanically to remove part of the shell and form a 0.10 mm insulating step.Finite element simulation using ANSYS/LS-DYNA revealed that the stress on the ceramic plate during radial cutting was 56.35 MPa,significantly lower than that encountered during axial cutting,which reached 216.25 MPa.Furthermore,both stress and deformation of the ceramic plate in the piecewise superimposed cutting process were markedly reduced.By combining theoretical analysis and cutting experiments,a three-time superimposed radial feed process was developed,and the removal method of metal residual burrs was optimized,addressing the frequent damage to the matching and transmitting end face of the transducer and delamination with piezoelectric ceramics during the cutting process.The results of this study have great significance for the application and promotion of piezoelectric ultrasonic transducers.

关 键 词：超声换能器 金属外壳 切削加工 有限元仿真 

分 类 号：TN384[电子电信—物理电子学] TN305