BENDING METHOD OF PLATE WORKPIECE AND DIE AS WELL AS BENDING PRODUCT

摘要

PROBLEM TO BE SOLVED: To provide a bending method that suppresses the occurrence of a protrusion tending to be caused at the end edge of a workpiece in the bending of the workpiece, and to provide a die for machining the workpiece.SOLUTION: A bending method of a plate-like workpiece is characterized in that a recess 1 being a crossing position CP between a bending line BL of a workpiece W and an end edge WE of the workpiece W is formed in the inside inner surface of the bending of the workpiece W in a shape configured such that the depth from the inner surface and the depth of the direction along the bending line BL from the end edge WE become shallow gradually as moving away to three direction of the direction along the bending line BL from the crossing position CP and two directions moving away along the end edge WE, and then the bending of the workpiece W is performed along the bending line BL. The size of the recess 1 is the size corresponding to the amount of a bulge P projecting from the bottom edge of the workpiece W in the bending of the workpiece W.