| 摘要 |
According to one embodiment of the present invention, a method to manufacture a press formed material reduces forming load of an upper mold in order to prevent an object to be molded from freezing by elastically restoring the object, and prevents stress concentration to improve formability. The method enables the object to be positioned between an upper and a lower mold, and applies forming load through a driving unit while supplying lubricating oil between the mold and the object. |
