PRESS-FORMING METHOD AND METHOD OF MANUFACTURING PRESS-FORMED PRODUCT

摘要

Provided is a press-forming method capable of alleviating camber-back generated in a hat-shaped member while alleviating constraints on the shape of the hat-shaped member. During press-forming, a blank material (4) having a linear length in the longitudinal direction that is longer than the linear length in the longitudinal direction of at least a top sheet portion of a hat-shaped member (5) is fixed by being flexed upward between a pair of press dies (a lower die (2) and an upper die (3)) having curved surfaces (a convex surface (2a) and a concave surface (3a)), in other words flexed in the direction of curvature of the lower die (2) and the upper die (3). Next, a curved portion of the hat-shaped member (5) is press-formed in the fixed blank material (4) using the convex surface (2a) and the concave surface (3a).