微细铣削工艺参数优化实验研究

An Experimental Analysis of Micromilling Process Parameters

以被加工工件表面粗糙度为指标,对微细铣削工艺参数进行了实验研究,采用所研发的基于pmac运动控制器的开放式三轴桌面微细铣削机床,选取轴向切深,径向切深和进给量三个因素安排正交实验,对黄铜H59进行了微细铣削加工。运用白光干涉仪对微细铣削宽槽底部的表面粗糙度进行了测量,通过对测量数据的极差分析和方差分析,确定了各因素对表面粗糙度的影响规律及三个因素对表面粗糙度影响的主次顺序,实验表明径向切深对表面粗糙度值影响最大。

The process parameters of micromilling is experimentally studied according to the milled surface roughness. The experiments are processed on a three-axis desktop micromilling machine tool developed by the authors based on the pmac motion controlling unit and open CNC system. Axial depth of cut, radial depth of cut aud federate have been selected as the main factors of the orthogonal experiments. The brass H59 is used as the workpiece material. The white light interferometer is used to measure the surface roughness of the bottom surface of the micromilled slot. By the range and variance analysis of the measured data, the effects and the important order of the micromilling process parameters on finished surface roughness are identified. The experiment shows that the radial depth of cut has a greater effect on the finished surface roughness.