Abstract
In recent years, the concern with energy-saving of NC machine tools has been growing, and several studies have made on reducing power consumption of NC machine tools. However, very few attempts have been made at focusing the relationship between energy consumption of spindle and feed drive systems of NC machine tool and cutting force in end-milling operation. The purpose of this study is to clarify the energy consumption of spindle and feed drive systems of NC machine tool in end-milling operation. In order to achieve the purpose, power at amplifiers, toques, and cutting forces are measured in end-milling operation with several cutting conditions. The energy consumption per 1 cubic millimeter of material removal volume are calculated from the measured results. As the results, it is confirmed that the energy consumption per 1 cubic millimeter of material removal volume becomes lower in down-cut milling than in up-cut milling. In addition, the energy consumption becomes lower in higher material removal rate.
