中文摘要：

为优化加工参数,提高微铣削的加工效率和加工精度,在自行研制的三轴联动微细铣削机床上,选取典型微三维零件特征进行铣削特性实验,对微细铣削表面粗糙度进行测量和分析。深入研究了切削速度、轴向切深、每齿进给量以及刀具切削刃钝圆半径等因素对表面粗糙度的影响规律。结果表明,每齿进给量和刀具切削刃钝圆半径对表面粗糙度影响显著。为了减小表面粗糙度,应尽量选用切削刃钝圆半径较小的刀具,以及通过刀具和工件材料性能的变化或切削条件的改变以减小切削时的最小切削厚度。

英文摘要：

In order to optimize the machining parameters to improve the processing efficiency and accuracy of micro-milling,the milling characteristics experiments with typical micro three dimensional parts are done by the developed 3-axis micro-milling machine tool,and the surface roughness is measured and analyzed.The impact law of the cutting speed,axial cutting depth,feed per tooth,cutting edge radius and other parameters on surface roughness is deeply studied.The results indicate that the feed per tooth and cutting edge radius has a significant effect on the surface roughness of micro-milled parts.In order to reduce the surface roughness,milling cutter having smaller cutting edge radius should be used.We can also change the tool and workpiece material properties or cutting conditions to reduce the minimum cutting thickness in machining.