US 12,220,737 B2
Method of manufacturing press-formed product and press line
Ryuichi Nishimura, Tokyo (JP); and Toshiya Suzuki, Tokyo (JP)
Assigned to NIPPON STEEL CORPORATION, Tokyo (JP)
Appl. No. 17/423,668
Filed by NIPPON STEEL CORPORATION, Tokyo (JP)
PCT Filed Jan. 16, 2020, PCT No. PCT/JP2020/001370
§ 371(c)(1), (2) Date Jul. 16, 2021,
PCT Pub. No. WO2020/149380, PCT Pub. Date Jul. 23, 2020.
Claims priority of application No. 2019-005940 (JP), filed on Jan. 17, 2019.
Prior Publication US 2022/0072598 A1, Mar. 10, 2022
Int. Cl. B21D 22/20 (2006.01); B21C 51/00 (2006.01); B21D 22/06 (2006.01); B21D 22/22 (2006.01); B21D 24/00 (2006.01)
CPC B21D 22/20 (2013.01) [B21C 51/00 (2013.01); B21D 24/00 (2013.01); B21D 22/06 (2013.01); B21D 22/22 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method of manufacturing a press-formed product, comprising:
capturing, via a sheet-thickness capturing device, a sheet thickness of one or more sheets to be pressed separately for each sheet; and
press-forming the sheet into a press-formed product using a die, a punch and a movable mold part, the movable mold part being capable of changing its position relative to both the die and the punch, the movable mold part capable of protruding outwardly from a pressing surface of the die or the pressing surface of the punch, and the die, the punch, and the movable mold part performing the press-forming of the sheet into the press-formed product,
wherein, the press-forming of the sheet into the press-formed product includes controlling an initial position of the movable mold part relative to the die or the punch using and depending on the captured sheet thickness of the sheet, and
wherein the sheet-thickness of the sheet is captured prior to performing the press-forming the sheet by the press equipment.