Provided is a press-formed article manufacturing method including a first step of pressing a blank with the first pressing apparatus to form a first intermediate formed article having a pair of bent portions that is bent to one side in the plate thickness direction and having a spacing between the bent portions that is narrower than the width of the top plate and equal to or more than the width of the top portion of the convex portion, and a second step of moving the second die relative to the second punch side punch with respect to the die pad and the second punch and forming a second intermediate formed article, having the standing wall formed therein, with the second die and the second punch, in a state where a portion between the bent portions is sandwiched between the die pad protruding from the second die to the second punch side punch, and the convex portion, with one side of the first intermediate formed article in the plate thickness direction as the convex portion side of the second pressing apparatus.

A production method includes a placement step, a first pressing step, and a second pressing step. In the placement step, a blank plate is placed in press tooling. In the first pressing step, the blank plate is caused to undergo bend forming in such a way that concave ridges, a concave area, and areas of concave-correspondence vertical wall areas that are areas adjacent to the concave ridges are formed in the blank plate. In the second pressing step, the resultant plate is caused to undergo draw forming in such a way that convex ridges, a convex area, areas of convex-correspondence vertical wall areas that are areas adjacent to the convex ridges are formed in the resultant plate.

A production method includes a placement step, a first pressing step, and a second pressing step. In the placement step, a blank plate is placed in press tooling. In the first pressing step, the blank plate is caused to undergo bend forming in such a way that concave ridges, a concave area, and areas of concave-correspondence vertical wall areas that are areas adjacent to the concave ridges are formed in the blank plate. In the second pressing step, the resultant plate is caused to undergo draw forming in such a way that convex ridges, a convex area, areas of convex-correspondence vertical wall areas that are areas adjacent to the convex ridges are formed in the resultant plate.

A method of manufacturing a case for a starting device, the case having at least one curved portion and having an interior configured to be supplied with oil includes forming a thickened portion by partially thickening a metal sheet material and forming the curved portion by bending the sheet material at the thickened portion by press working. An outer surface of the curved portion projects outward of the case beyond a curved surface that is concentric with an inner surface of the curved portion and that has a radius of curvature equal to the sum of the radius of curvature of the inner surface and the thickness of the sheet material forming the case. Metal flows in the curved portion are continuous from the inner surface to the outer surface without any break.

A method of manufacturing a case for a starting device, the case having at least one curved portion and having an interior configured to be supplied with oil includes forming a thickened portion by partially thickening a metal sheet material and forming the curved portion by bending the sheet material at the thickened portion by press working. An outer surface of the curved portion projects outward of the case beyond a curved surface that is concentric with an inner surface of the curved portion and that has a radius of curvature equal to the sum of the radius of curvature of the inner surface and the thickness of the sheet material forming the case. Metal flows in the curved portion are continuous from the inner surface to the outer surface without any break.

A method of manufacturing a press-formed product includes: capturing the amount of warp in a sheet to be pressed separately for each sheet; and using a die 6, a punch 7, and a movable mold part to press-form the sheet into a press-formed product. During press-forming, the initial position of the movable mold part 9 relative to the die 6 or punch 7 is controlled depending on the amount of warp in the sheet.

A method of forming a finished stamped product includes positioning a blank on a blank holder between an upper die and a lower die, inserting a movable wedge block between the blank holder and the upper die to establish a first binder gap, and while the movable wedge block is inserted, performing a first strike of the blank by lowering the upper die a first distance to contact and partially form the blank, the movable wedge block limiting downward movement of the upper die relative to the lower die. After the first strike, withdrawing the movable wedge block to establish a second binder gap between the blank holder and the upper die, and while the movable wedge block is withdrawn, performing a second strike of the blank by lowering the upper die a second distance to finally form the blank into the finished product.

A hot-press molding apparatus includes an upper mold (14) having a molding surface for molding a to-be-molded portion (4) of a metal sheet material (2) and a blade (32a) serving as a punch (32), a lower mold (13) having a molding surface (21) for molding the to-be-molded portion by sandwiching it in cooperation with the upper mold, and a die (16) configured to separate, from the to-be-molded portion, a trimming portion (3) positioned outside the to-be-molded portion in the metal sheet material in which the to-be-molded portion is molded by the upper mold and the lower mold, in cooperation with the blade of the upper mold. An outer side surface (14a) of the upper mold is so formed as to extend in the cutting direction of the punch, and defines, on the side of the upper mold, a cooling suppression space (62) to which the trimming portion is exposed and which suppresses cooling of the trimming portion. A hot-press molding apparatus capable of preventing the occurrence of delayed fracture in a molded product is provided.

A hot-press molding apparatus includes an upper mold (14) having a molding surface for molding a to-be-molded portion (4) of a metal sheet material (2) and a blade (32a) serving as a punch (32), a lower mold (13) having a molding surface (21) for molding the to-be-molded portion by sandwiching it in cooperation with the upper mold, and a die (16) configured to separate, from the to-be-molded portion, a trimming portion (3) positioned outside the to-be-molded portion in the metal sheet material in which the to-be-molded portion is molded by the upper mold and the lower mold, in cooperation with the blade of the upper mold. An outer side surface (14a) of the upper mold is so formed as to extend in the cutting direction of the punch, and defines, on the side of the upper mold, a cooling suppression space (62) to which the trimming portion is exposed and which suppresses cooling of the trimming portion. A hot-press molding apparatus capable of preventing the occurrence of delayed fracture in a molded product is provided.

A method for manufacturing a pressed component including an elongated top plate, a wall having one end connected to a short direction end portion of the top plate, that curves with a convex shape bowing toward an opposite side to the top plate as viewed from an upper side of the top plate, and that includes a sharp curve portion, and a flange that is connected to another end of the wall, and that extends in a plate thickness direction of the wall toward the opposite side to the top plate side. The manufacturing method includes pressing to form an intermediate formed component including a preliminary flange and pressing to deform the preliminary flange to form the preliminary flange into the flange.