薄壁零件的铣削加工稳定性研究  

Research on the Stability of Milling Thin-walled Workpieces

作　　者：汪通悦[1,2] 何宁[2] 李亮[2] 柳大虎[2] 

机构地区：[1]淮阴工学院,江苏淮安223003 [2]南京航空航天大学,江苏南京210016

出　　处：《机床与液压》2009年第12期15-17,共3页Machine Tool & Hydraulics

基　　金：国家自然科学基金资助项目(10477008);江苏省高校自然科学基础研究资助项目(07KJB460008);数字化制造技术重点实验室开放项目(HGDML08-01)

摘　　要：为控制薄壁结构零件加工过程中的变形和切削振动,在考虑刀具和工件两个方向的自由度的基础上,分析、建立了薄壁零件的动态铣削模型。针对2A12铝合金薄壁结构零件,利用M ikron高速加工中心和相关仪器,通过铣削力实验和模态实验,分别测得特定刀具和工件系统的动态铣削力系数和模态参数,从而绘制出高速铣削薄壁零件的稳定性叶瓣图,得到了不同径向切深条件下的极限轴向切深,并通过试验进行了验证。这种方法可用于相关薄壁零件加工时合理选择切削用量。In order to control the cutting deformation and chatter in machining of thin-walled workpieces, the dynamic milling model of thin-walled workpieces was analyzed and built based on the analysis of degrees in two perpendicular directions of tool-workpiece system. The stable lobe graph for high speed milling of 2A12 aluminum alloy thin-walled workpieces was obtained by utilizing modal parameters and force coefficients, which were acquired respectively by milling tests and modal analysis tests on Mikron high speed machining center. The method can be used to select proper cutting parameters in milling thin-walled components.

关 键 词：薄壁零件 切削振动 动态铣削模型 稳定性叶瓣图 极限切深 

分 类 号：TG580[金属学及工艺—金属切削加工及机床]