太赫兹慢波结构微铣削装置的优化设计及模态分析  

Optimization Design and Modal Analysis of Micro-milling Equipment with Terahertz Slow Wave Structure

作　　者：鲁义凡 陈明君[1] 王廷章[1] 刘赫男[1] 韩鹏宇 LU Yi-Fan;CHEN Ming-Jun;WANG Ting-Zhang(School of Mechatronics Engineering, Harbin Institute of Technology, Haerbin 150001)

机构地区：[1]哈尔滨工业大学机电工程学院

出　　处：《航空精密制造技术》2019年第4期5-9,共5页Aviation Precision Manufacturing Technology

基　　金：国家重点研发计划资助项目(2017YFB0305900)

摘　　要：为使设计出的微铣削装置满足慢波结构件的制造要求,采用有限元辅助分析的方法,通过床身结构优化、减重设计、增加隔振垫等处理,完成对微铣削装置的优化设计.通过对主轴夹持装置的结构参数优化完成主轴夹持装置的优化设计.选取隔振垫弹簧阻尼刚度作为变量,进行模态仿真,研究其对机床频率的影响.结果表明优化后的机床总体变形量下降到2.274μm、最大应力降低到0.69MPa,远小于方钢的屈服极限、一阶固有频率提升至173.12Hz,各阶固有频率特性均得到改善.In order to make the designed micro-milling equipment meet the manufacturing requirements of slow-wave structural parts, finite element modeling was carried out by using ANSYS, and the optimized design of micro-milling equipment was completed by optimizing the structure of the bed, reducing the weight and adding vibration isolation pad. The optimum design of the spindle clamping device is completed by optimizing the structural parameters of the device. The damping stiffness of the vibration isolation pad spring is selected as a variable to carry out modal simulation and study its influence on the machine tool frequency. The results showed that the overall deformation of the optimized machine tool decreased to 2.274um, the maximum stress decreased to 0.69mpa, which was far less than the yield limit of the square steel, and the first-order natural frequency increased to 173.12Hz, and the natural frequency characteristics of all orders were improved.

关 键 词：慢波结构件 微铣削装置 优化设计 模态分析 

分 类 号：TH122[机械工程—机械设计及理论]