Metal sheet pressing method

摘要

This invention provides a metal sheet pressing method of precision-pressing a metal sheet, wherein after a metal sheet ( 1 ) is partially drawn so as to form a perforated portion ( 1 a), the perforated portion ( 1 a) is heated by baking and after it is heated by baking, the perforated portion ( 1 a) is pressed with press dies into an uneven-surface shape.