Abstract
This study deals with a method of determining suitable cutting conditions without using a database. It involves deriving the cutting conditions from the drilling conditions by considering the energy efficiency. The energy efficiency is the ratio of the supplied energy to the removed volume. This can be used as a parameter to compare drilling with cutting. In addition, the energy efficiency ratio given by the ratio of both parameters is used for analyses. Mild steel was used to examine the relation between the cutting energy efficiency and drilling energy efficiency under various processing conditions. As a result, the relation between the perforation time and the energy efficiency ratio was found. A system used to derive the cutting conditions from this relation was constructed from the drilling data.
