The slight clearance punching process with a moving die is effective for the ultra-high strength steel sheets for
correcting the eccentricity between the punch and die. This process has the advantage of not only for the
improvement but also maintaining the high quality of the sheared edge even for high number of strikes. The
decrease in punching speeds in the initial strikes is effective to initiate the high quality of the sheared edge of the
ultra-high strength steel sheets. Although the correction of the eccentricity between the punch and die is able by
slight clearance punching with a moving die, the quality of the sheared edge is subjected to strength of the sheet.