手机振动马达的结构分析和优化设计  

Structural Analysis and Optimum Design of Vibration Motor for Mobile Phone

作　　者：张杉杉 王玫[1] 周航 黄思思 ZHANG Shan-shan;WANG Mei;ZHOU Hang;HUANG Si-si(School of Manufacturing Science and Engineering,Sichuan University,Sichuan Chengdu610065,China;Sichuan Anhe Precision Electronics and Electrical Appliances Co.,Ltd,Sichuan Mianyang621000,China)

机构地区：[1]四川大学制造科学与工程学院,四川成都610065 [2]四川安和精密电子电器有限公司,四川绵阳621000

出　　处：《机械设计与制造》2020年第3期1-4,共4页Machinery Design & Manufacture

基　　金：四川省重大科技专项(2019YFG0356)。

摘　　要：针对手机用铁芯马达在跌落测试中良品率过低的问题,对振动马达的结构进行优化设计。通过NX建立了马达的仿真模型,求解得出马达在跌落过程的中的所受应力最大的部分为轴承与轴的接触部位。优化设计方案将马达的轴承宽度加大0.2mm,这一改进可以加大轴承与轴的接触面积。再次使用仿真模拟出优化后的马达与原始马达相比所受最大应力减小了25.7%。最后通过跌落实验表明优化后的马达在摆锤偏移值,噪声值,以及轴承孔变形情况上均有改善,证明了优化设计的合理性。Aiming at the low passing rate of vibration motor for mobile phone in drop test,the structure of vibration motor was optimized.The simulation model of the motor is established by NX,finding that the most stressful part of the motor in drop test is the contact part between the bearing and the shaft.The optimum design scheme enlarges the bearing width of the motor by 0.2 mm,which can increase the contact area between the bearing and the shaft.The maximum stress of the optimized motor is reduced by 25.7% in simulation.Finally,the drop test shows that the optimized motor improves the pendulum offset value,noise value and bearing hole deformation,which proves the rationality of the optimization design.

关 键 词：振动马达 有限元分析 跌落测试 优化设计 NASTRAN仿真 结构分析 

分 类 号：TH16[机械工程—机械制造及自动化] U462.1[机械工程—车辆工程]