PUNCHING AND SHEARING DEVICE WITH SHEAR ANGLE

摘要

PROBLEM TO BE SOLVED: To improve stretch flange formability of a processed material by a punching device having an inclined cutting blade.;SOLUTION: The punching and shearing device (15) with a shear angle is provided with a punch (2) having an upper cutting blade (10) in which a horizontal part (11) is partially provided with respect to a cutting-plane line direction and a portion excluding the horizontal part (11) comprises an inclination part (12) inclined to the cutting-plane line direction; and with a die (3) having a lower cutting blade (3a). A plate reverse presser foot (14) is provided in the position opposing to the punch (2).;COPYRIGHT: (C)2009,JPO&INPIT