PRESS-MOULDED ARTICLE MANUFACTURING METHOD AND VEHICLE LOWER ARM

摘要

A press-moulded article (10) which includes: a body section (11) that has a first end section (11a) and a second end section (11b) respectively at both ends thereof; and a protruding section (12) which projects from a curved section of the body section (11) and at the curve outer side. A groove section (15) in a region at the first end section (11a) side from the root of the protruding section (12) is provided on the surface of a top plate section (13a) of the body section (11). A first longitudinal wall section (14a) which extends from the first end section (11a) of the body section (11) to the protruding section (12) has a corner section (16) which links the body section (11) and the protruding section (12). The angle formed by a portion from the corner section (16) towards the body section (11) and a portion from the corner section (16) towards the protruding part (12) is an acute angle. A method for manufacturing the press-moulded article (10) includes: a first step in which the first longitudinal wall section (14a) is further moulded without moulding the shape of the groove section (15) within the surface shape of the top plate section (13a); and a second step in which the shape of the groove section (15) is moulded within the surface shape of the top plate section (13a).