Provided are: a method for producing a molded material comprising tubular body and a flange formed at an end portion of the body; and a molded material produced thereby, which can prevent the flange of the molded material becoming unnecessarily thick, avoid the generation of wrinkles and buckling, and allow weight reduction of the molded material and size reduction of a base metal sheet. When producing the molded material by molding processes including at least one drawing-out process and at least one drawing process performed after the drawing-out process, a first drawing process is carried out on a region corresponding to the body while opening a die and a drawing sleeve, and an ironing process is carried out on a region corresponding to the flange while keeping a constant interval of a mold gap between the die and the drawing sleeve.

A method of shaping a component having a stamped component contour includes forming a first stage of the component contour in a work-piece blank, such that the first stage of the contour is bordered by an outer region of material of the work-piece blank. The method additionally includes forming a stake bead in the outer region of material following the forming of the first stage of the contour, wherein the stake bead has an asymmetrical shape when viewed in a cross-sectional plane. The method furthermore includes forming a second stage of the component contour in the work-piece blank, wherein the stake bead's asymmetrical shape is configured to limit flow of work-piece blank material into the second stage of the contour from the outer region of material to thereby limit an amount of springback and a resultant twist and/or curl of the stamped component contour.

A method for fabricating a double layer cup-shaped part may include shaping a first material into a hollow cylinder, mounting the hollow cylinder on a draw punch, where the draw punch may include an upper punch portion with a first diameter and a lower punch portion with a second smaller diameter. Mounting the hollow cylinder on the draw punch may include tightly fitting the hollow cylinder around the lower punch portion. The method may further include forming the double layer cup-shaped part by drawing a blank material through a draw die by placing the blank material over an upper opening of the draw die, and pressing the draw punch over the blank material. The first material may form an inner layer of the double layer cup-shaped part and the blank material may form an outer cup-shaped layer of the double layer cup-shaped part.

A tank portion defines a space therein and has an opening on one side. A foot portion is in a plate shape extending radially outward from a bottom end of the tank portion on the one side. A core plate covers the opening and has a base portion and a holder portion. The base portion is in an elongated rectangular plate shape having first and second long lateral sides and a short lateral side. The holder portion includes a first holder at the first long lateral side, a second holder at the second long lateral side, and a third holder at the short lateral side, each gripping the foot portion. All the first holder, the third holder, and the second holder are one piece continuously extending along the first long lateral side, the short lateral side, and the second long lateral side.

Provided is a press apparatus which ensures high production efficiency and has less chances of breakdown. Specifically, the press apparatus has a base placed on a floor, and a platform arranged over the base to face the base and move up and down. A lower die, on which a steel plate is to be placed, is fixed to the base. An upper die is fixed to the platform to press the plate against the lower die and turn it into an initially formed product through a downward movement of the platform, and to pressure-hold the initially formed product with the lower die. A machining die is supported on the platform to move up and down to machine the initially formed product and form a final product by moving down while pressure-holding the initially formed product.

Provided is a press apparatus which ensures high production efficiency and has less chances of breakdown. Specifically, the press apparatus has a base placed on a floor, and a platform arranged over the base to face the base and move up and down. A lower die, on which a steel plate is to be placed, is fixed to the base. An upper die is fixed to the platform to press the plate against the lower die and turn it into an initially formed product through a downward movement of the platform, and to pressure-hold the initially formed product with the lower die. A machining die is supported on the platform to move up and down to machine the initially formed product and form a final product by moving down while pressure-holding the initially formed product.

[Object] An issue is to provide a member that exhibits high load capacity and rigidity when joined to another member.

[Solution] Provided is a member 1 having a transverse cross section that includes a top sheet 2, upper ridgelines 4, vertical walls 3, lower ridgelines 5, and floor flanges 9, and including, on at least one end portions in the extending directions of the upper ridgelines 4, a top sheet flange 11 via a top sheet ridgeline 6 and vertical wall flanges 10 via vertical wall ridgelines 7, in which the vertical wall flange 10 and the floor flange 9 are continuous, and in end portions of the upper ridgelines 4 and the lower ridgelines 5, the sum total R of the radii of curvature of corner portions of the vertical walls and the sum total L of the widths of the top sheet 2 and the vertical walls 3 in an end portion of the member have the relation of R/L0.13. The member 1 is produced by performing a first step of performing press molding on a blank 26 to form, in a shrink flange manner, flange ridgelines 8 and thereby producing an intermediate molded product 27 including at least the flange ridgelines 8 and a second step of performing press molding on the intermediate molded product 27 to produce the member 1.

A manufacturing method for a wheel disc, includes forming a flange portion, wherein the flange portion is formed such that an inner mold and an outer mold having a cylindrical inner surface with a first inside radius larger than the first outside radius and placed above the inner mold coaxially to the inner mold are brought close relative to each other in an axial direction by one stroke so that the outer edge of the disc material is bent downward, and the cylindrical inner surface of the outer mold is provided with recessed portions hollowed outwardly in a wheel radial direction, the recessed portions being formed in ranges corresponding to the window portions in the wheel circumferential direction and in a range from a middle position to a bottom end in the wheel axial direction.

Provided is a method for producing a molded material by molding processes including at least one drawing-out process and at least one drawing process performed after the drawing-out process, in which a width of a punch 31 used in the drawing-out process on a rear end side is wider than a width of the punch on a distal end side, and an ironing process is performed on a region corresponding to a flange of a base metal sheet 2 by pushing the base metal sheet together with the punch 31 into a pushing hole 30a, and the drawing process is carried out using a die and a drawing sleeve, and processing is performed on a region subjected to the ironing process in the drawing-out process, while maintaining a constant mold gap between the die and the drawing sleeve.

A method of manufacturing a press-molded article includes: projecting an inner pad, provided at an apex portion of a punch, from the punch toward a side of a die, and disposing a metal sheet blank on the inner pad; and projecting a die pad, provided at the die, from the die toward a side of the punch to dispose the die pad at a position separated from the inner pad by a predetermined distance that is greater than a plate thickness of the metal sheet blank; forming a side walls by moving the die toward the punch side relative to the die pad, the inner pad, and the punch, and integrating the die pad with the die; and forming a top plate by moving the die and the die pad, which have been integrated, and the inner pad, toward the punch side relative to the punch.