Working method for preventing material-related or production-related bouncing of metal sheet material during manufacture of precise angular surface, involves pressing tool base unit with respect to welding surface of sheet material

摘要

The method involves pressing the metal sheet material using a stamper (6). A bounce corrector (5) is provided for correcting the bouncing error of the welding surface (2) of metal sheet material. The tool base unit (4) is pressed with respect to the welding surface of metal sheet material, so as to form 45[deg] inclined surface of metal sheet material.