抗强冲击微型圆筒型直线电机的结构设计  

Structure Design of Micro Cylinder Linear Motor with Strong Impact Resistance

作　　者：单鹏飞 王汉丰 方晓强[1] 杨素香[1] SHAN Pengfei;WANG Hanfeng;FANG Xiaoqiang;YANG Suxiang(No.21 Research Institute of CETC,Shanghai 200233,China)

机构地区：[1]中国电子科技集团公司第二十一研究所,上海200233

出　　处：《微特电机》2022年第10期24-27,30,共5页Small & Special Electrical Machines

摘　　要：研究了外径Φ7mm单相圆筒型直线电机的抗强冲击动子结构和尺寸紧凑定子结构,电机具有体积小、质量轻、抗冲击过载能力强的特点。结合与整机的一体化要求,动子选用了轴向充磁的动磁式结构,设计了一种采用滑动轴承的强冲击缓冲结构;仿照无刷空心杯电机的定子结构,绕线杯与机壳采用环氧浇注工艺一体化设计,制作了专用工装夹具完成线圈的绕制和装配。抗冲击力作用在转轴上,采用ANSYS软件仿真了转子的轴向和径向受力情况,分析了两种冲击条件下动子的应力应变状况。试验验证,转子可承受轴向加速度20 000 g和径向3 500 g的各1次重锤冲击,验证了结构方案的可行性。The actuator structure with strong impact resistance and the stator structure with compact size was studied on the single-phase micro cylinder linear motor of external diameter Φ7 mm. The motor had the characteristics of small volume, light weight and strong impact overload resistance. A buffer structure to resistant strong impact with sliding bearing was designed by selecting the actuator with an axial magnetized moving magnetic structure and integrating the whole machine. The winding cup and the casing were designed by epoxy casting process, imitating the stator structure of brushless hollow cup motor. The axial and radial forces of the rotor were simulated by ANSYS software, and the stress and strain of the actuators under two kinds of impact conditions were analyzed. The results showed that the rotor could withstand one times of heavy hammer impact with axial acceleration of 20 000 g and radial acceleration of 3 500 g, which verified the feasibility of the structure scheme.

关 键 词：直线电机 冲击 结构设计 有限元仿真 

分 类 号：TM359.9[电气工程—电机]