Patent ID: 9718499
Date: 2017-08-01
CPC Classifications: B21D,B21J,B21K,B62D,Y10T

Claim:
1. A manufacturing method for a press component in which press working is performed on a metal stock sheet to mold a press component having an L shaped hat shaped cross-section formed from a hat shaped cross-section configured by a top plate section, two vertical walls joined to both sides of the top plate section, and two flanges joined to the two respective vertical walls, and from a curved portion that curves along the longitudinal direction in plan view, or a press component having such an L shaped hat shaped cross-section over a portion thereof, the method comprising molding the press component by: placing the metal stock sheet between a punch and a blank holder, and a pad, a die, and a bender; pressing and clamping a portion of the metal stock sheet for forming the top plate section against the punch using the pad, and pressing and clamping a portion of the metal stock sheet that will be further to the outside of the curve portion than the portion of the metal stock sheet for forming the top plate section against the die using the blank holder; and after molding the vertical wall at the inside periphery of the curved portion and the flange portion joined to that vertical wall through working the metal stock sheet by relatively moving the bender in the direction toward where the punch is positioned, molding the vertical wall at the outside periphery of the curved portion and the flange portion joined to that vertical wall, by relatively moving the die and the blank holder in the direction toward where the blank holder is positioned relative to the metal stock sheet and working the metal stock sheet while maintaining the state in which the metal stock sheet is pressed and clamped against the die by the blank holder.