A Processing Technical Analysis for the Characteristics of Forces and Surface Roughness in Micro-scale Milling

The spindle speed, federate and axial depth of micro-milling are found to have a significant influence on the micro milling forces and surface roughness through experimental analysis of the micro-end milling process. To investigate these issues, an orthogonal test method is developed in this present work. Firstly, experimental analysis for the micro-milling forces and surface roughness was performed based on the micro-end-milling experiments of AL5083-O by using 0.396mm diameter micro-end mills with a miniaturized machine tool. Then, the datum of experiments were classified and analyzed by the orthogonal test method. Finally, the laws of micro-milling forces and surface roughness with changing process parameters were found and summarized. The spindle speed has a significant effect on the micro milling forces and surface roughness. In a word, the results of this work were useful to understand the characteristics of machining process and improve the machining performances.