磨削砂轮参数对高速铣削球头立铣刀的模态分析  

Modal Analysis of Grinding Wheel Parameters to High-speed Ball-nose End Milling Cutter

作　　者：夏文胜[1] 黄正胜 赵先锋[3] 高飞[1] 

机构地区：[1]盐城工学院机械工程学院,江苏盐城224051 [2]合肥卓泰机电设备有限公司,合肥230031 [3]贵州大学机械工程学院,贵阳550025

出　　处：《煤矿机械》2015年第12期110-112,共3页Coal Mine Machinery

基　　金：贵州省科技厅重点科技计划项目(黔科合GZ字(2007)3008);贵州省国际科技合作计划项目(黔科合外G字(2008)700114)

摘　　要：为了研究球头立铣刀的刀槽承载的应力应变对刀具稳定性和磨损程度的影响,提出了利用有限元分析软件对磨削仿真加工的球头立铣刀进行模态分析。分别分析了螺旋槽磨削砂轮半径和螺旋槽磨削砂轮安装偏摆角对球头立铣刀的模态影响。分析结果表明:球头立铣刀的固有频率,1阶和2阶很接近,2阶和3阶相差很大,3阶和4阶相差较大;随着磨削砂轮半径增大,刀具的固有频率先小幅度增大,然后大幅度减小。磨削砂轮安装偏摆角越大,刀具的固有频率就越大。说明磨削砂轮半径和磨削砂轮安装偏摆角是影响刀具固有频率和振型的重要因素。To study the impact of the sipes bearing stress and strain to the stability and the wear of the milling cutter, proposed for the ball-nose end milling cutter of the simulation and machining, using FEA software to carry out modal analysis. Analyzed the modal impact of the radius of grinding wheel and the installing deflection angle of grinding wheel on the ball-nose end milling cutter. Results showed that, natural frequency of the ball-nose end milling cutter, the first-order and the second-order is very close, but the second-order and the third-order, and the third-order and the fourth-order are different. As the grinding wheel radius increases, the natural frequency of the tool modest increased firstly, then decreases dramatically. When installing deflection angle of grinding wheel increases, the natural frequency of the milling cutter has also increased. They were showed that, the radius of grinding wheel and the installing deflection angle of grinding wheel are important factors which affect the natural frequencies and mode shapes of the milling cutter.

关 键 词：球头立铣刀 模态分析 有限元分析 磨削砂轮半径 磨削砂轮安装偏摆角 

分 类 号：TG714[金属学及工艺—刀具与模具] TG84