SURFACE ROUGHNESS STUDY BASED ON MICRO-END-MILLING WITH A MINIATURIZED MACHINE TOOL

摘要

Micro-end-milling using miniaturized machine tool is discussed in this paper. The objective is to analyze the influence of micro-end-milling condition on roughness of a surface, machined by using a miniaturized machine tool. The parameters considered in this paper are spindle speed, feed rate, depth of cut and tool diameter. Experiments are design to determine which parameters are most influential on surface roughness. Statistical methods are used for finding out the optimal values of milling parameters. The performance of machine tool while machining different materials such as brass and plastic with micro-end-mill, is discussed in this paper. The influence of each milling parameter in micro-end-milling process is analyzed and the magnitude of parameters is determined. The interaction effect of parameters to surface roughness is discussed and the optimal condition of milling process is established. The experimental data for different materials is analyzed to identify their influence on surface roughness. It is observed from the analysis that in micro-end-milling, the value of surface roughness for plastic material is much higher compared to ductile metal, brass.