Abstract:The drilling technique of machine tool was taken as research object.The various running state power, specific energy consumption and effective processing energy efficiency of machine tool were analyzed at the time of the drilling process. The results show that loadless power of machine tool occupies the vast majority of the total machine tool cutting power, and loadless power and cutting power are associated with the process parameters, but the change trend of loadless power is tiny. Specific energy consumption will be reduced with the increasing of tool diameter, feed and cutting speed. Effective processing energy efficiency of machine tool will become larger with the increasing of tool diameter, feed and cutting speed. In the actual production of cast iron drilling, on the premise of ensuring the quality of processing,choosing the larger feed and cutting speed is more conducive to save energy and reduce consumption, while also improving the energy efficiency of machine tool.