Method and apparatus for producing pressed component

An apparatus for producing a pressed component, the apparatus comprising a punch and a blank holder, and a pad, a die and a bending die which are disposed so as to oppose the punch and the blank holder, the apparatus producing a pressed component which has a hat-shaped cross section and partially or entirely has an L shape as viewed in a plan view by including a curved portion which curves in a longitudinal direction as viewed in a plan view from a direction orthogonal to a top plate, the pressed component being formed by performing press working on a blank, the hat-shaped cross section being defined by the top plate extending in the longitudinal direction, two vertical walls connected to both sides of the top plate, two concave ridges respectively connected to the two vertical walls, and two flanges respectively connected to the two concave ridges, wherein

• the apparatus satisfies following conditions 1 and 2, and the press working includes following first to third steps:
• the first step where the pad clamps and holds, in cooperation with the punch, a portion of the blank to be formed into the top plate, and the blank holder clamps and holds, in cooperation with the die, a portion of the blank to be formed into a portion disposed further outward of the curved portion than the portion of the blank to be formed into the top plate;
• the second step where, after the first step, the bending die is relatively moved in a direction toward a side where the punch is disposed so as to perform working on the blank, thus forming the vertical wall on an inner side of the curved portion, the concave ridge connected to the vertical wall, and the flange connected to the concave ridge;
• and
• the third step where, after the second step, with the blank holder clamping and holding the blank in cooperation with the die, the die and the blank holder are moved relative to the blank holder in a direction toward a side where the blank holder is disposed so as to perform working on the blank, thus forming the vertical wall on the outer side of the curved portion, the concave ridge connected to the vertical wall, and the flange connected to the concave ridge so as to form the pressed component:
• [Condition 1]
• the bending die and the punch includes a material-inflow-promoting-portion forming mechanism configured to form, in the second step, one or more material inflow promoting portion in a side by side manner with respect to a portion of the blank to be formed into the flange on the inner side of the curved portion of the pressed component;
• and
• [Condition 2]
• the material-inflow-promoting-portion forming mechanism forms the material inflow promoting portion such that cross-sectional peripheral lengths on cross sections, which extend parallel to a straight line being in contact with a center position of an inner circumference of the curved portion as viewed in a plan view from a direction orthogonal to the top plate, and which extend along a direction orthogonal to the top plate, increase as a distance from the flange on the inner side of the curved portion of the pressed component increases.