中文摘要：

利用自研的三轴微小型立式数控铣床和微径立铣刀（直径小于1mm），通过双因素及中心复合实验设计的方法，分析微细铣削硬铝LY12过程中的铣削参数（包括每齿进给量、轴向切深、主轴转速、刀具直径以及刀具悬伸量）对工件表面粗糙度的影响，重点探讨了每齿进给量和轴向切深对表面粗糙度的交互影响，并建立了数学模型，为微细铣削工艺参数的选择和表面质量的控制提供了基本依据。

英文摘要：

In this paper, the influence of parameters used in micro- milling process on roughness of aluminum surface machined by a 3 axial miniaturized NC machine developed by ourselves and micro-end-mill （the diameter less than lmm） is analyzed via a dual-factor design and central composite design. The cutting parameters considered am feed per tooth, depth of cut, spindle speed, tool diameter and overhang length of tool. The interaction effect of feed per tooth and depth of cut on surface roughness is emphatically discussed and the mathematical model for micro-milling is established.