Patent ID: 6860135

Claim:
A method for removing strain from a press-formed workpiece which is obtained by pressing a blank in a press direction, while fixing a peripheral edge portion of the blank, by use of a forming press, wherein said workpiece has a shape of the whole press-formed portion which will remain later as a product made from the press-formed workpiece and is complete as a shape of the product, comprising a step of: partially holding a central portion, including the whole press-formed portion which will remain as the product, of the press-formed workpiece and moving the central portion in the press direction, while fixing a peripheral edge portion on of the press-formed workpiece corresponding to the peripheral edge portion of the blank, so as to draw a peripheral portion, surrounding the central portion, of the press-formed workpiece away from the central portion, for imparting plastic deformation to the press-formed workpiece, to thereby remove stain from the press-formed workpiece.