微细加工铣床研制及其铣刀的力学特性分析  

Development of Micro Milling Machine and Analysis of the Mechanics Characteristics of Micro Milling Cutter

作　　者：曹自洋[1] 何宁[1] 李亮[1] 

机构地区：[1]南京航空航天大学,南京210016

出　　处：《中国机械工程》2008年第18期2223-2226,共4页China Mechanical Engineering

基　　金：国家自然科学基金资助项目(10477008);江苏省自然科学基金资助项目(BK2007198);南京航空航天大学创新基金资助项目(Y0604-052)

摘　　要：研制了一台由直线电机运动平台、高速空气静压电主轴和DMC-1842运动控制卡组成的三轴联动微细铣削机床。开发了可编辑和执行G代码程序的数控系统,并利用有限元法对微细铣刀的力学特性进行分析。通过模态与静力学分析,研究微细铣刀的固有频率和振型,探讨刀具的悬伸长度对加工过程中刀具振动的影响,以及微细铣刀的应力和变形特点。A 3- axis micro- milling machine was constructed, which was composed of linear motor, air high-- speed static-- pressure electro-- spindle and motion -- control card DMC-- 1842. And the numerical control system was developed, which can edit and execute G--code. Furthermore, the mechanics characteristics of micro milling cutter was analyzed using FEM. By modal analysis of micro milling cutter, the inherent frequency and modal of vibration was studied, and the effect of the tool＇s extended length on vibration characteristics of tool in cutting was also researched. The stress and distortion characteristics of the micro milling cutter was discussed through statics analysis.

关 键 词：微细制造 微细加工铣床 微细铣刀 模态 有限元法 

分 类 号：TG501[金属学及工艺—金属切削加工及机床]