Patent ID: 11878334
Assignee: NIPPON STEEL CORPORATION
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 2:
3. The method of manufacturing the press-formed product according to claim 1, wherein the press-formed product is a grooved member including a top plate, walls extending from both ends of the top plate, and ridges each located between the top plate and an associated one of the walls, and
the movable mold part includes an inner pad provided on a top of the punch,
the method for each of the one or more sheets comprising:
placing the sheet between the die and the punch including the inner pad on its top;
setting the initial position of the inner pad relative to the punch based on the captured amount of warp;
with the initial position of the inner pad relative to the punch having been set, moving the die and the punch closer to each other to form the walls while a die corner of the die is sliding against the sheet; and
with the inner pad pulled into the punch, compressing the sheet by means of the top of the punch and the die to form the top plate.