B21D24/005

PRESS-FORMED PRODUCT, AND PRODUCTION METHOD AND PRODUCTION EQUIPMENT LINE FOR PRODUCING THE PRESS-FORMED PRODUCT

A method for producing a press-formed product that includes a pair of flat sections and a bend section that connects the flat sections, in which a bending radius of the bend section is R.sub.2 and an interior angle formed by the pair of flat sections is θ.sub.2, includes the steps bellow. In the first forming step, an intermediate formed product including a bend section in which a bending radius is R.sub.1 and an interior angle is θ.sub.1 is formed. In the second forming step, a portion of a bend section of the intermediate formed product is formed into the bend section of the press-formed product. R.sub.1, θ.sub.1, R.sub.2 and θ.sub.2 satisfy the conditions of Formulae (1) to (3) below:


1.05<A.sub.1/A.sub.2   (1);


1.0<R.sub.1/R.sub.2   (2);


A.sub.1/A.sub.2<6.0/(R.sub.1/R.sub.2)   (3), where, A.sub.1, A.sub.2 represents the supplementary angle of the interior angle θ.sub.1, θ.sub.2, respectively.

Press formed product, automobile structural member with the press formed product, and method for producing press formed product
11534815 · 2022-12-27 · ·

Disclosed is a press formed product which is formed from a single steel sheet. The press formed product includes two vertical wall portions, a top plate portion which connects two vertical wall portions with each other, and a projecting portion which projects from at least one boundary portion of two boundary portions each of which connects the vertical wall portion and the top plate portion with each other. In the projecting portion, a steel sheet extending from the vertical wall portion and a steel sheet extending from the top plate portion project from the boundary portion so as to overlap at an overlapping portion located at least at a distal end of the projecting portion. The projecting portion is present at least at a portion of the press formed product in a longitudinal direction. An angle formed between the top plate portion and the overlapping portion is larger than 180°.

METHOD FOR MANUFACTURING PRESS-FORMED ARTICLE, PRESS-FORMED ARTICLE, AND PRESS-FORMING APPARATUS

A method for manufacturing a press-formed article (100) includes a first step for forming a base sheet portion, a first rising portion, and a first strip portion from a sheet-shaped workpiece having a first edge portion and a second edge portion; and a second step for forming a second rising portion by causing a strip-shaped first zone including the second edge portion to be disposed between a first upper die and a first lower die from both sides, causing a second zone adjacent to the first zone to be disposed between a second upper die and a second lower die from both sides, and moving the first upper die and the first lower die relative to the second upper die and the second lower die, wherein, in the second step, a part of the second rising portion which is connected to a vertical ridge line (108) is shear-deformed.

Press-formed article manufacturing method and press line

Provided is a press-formed article manufacturing method including pressing a blank with the first pressing apparatus to form a first intermediate formed article having a pair of bent portions bent to one side in the plate thickness direction and having a spacing between the bent portions 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 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 in a state where a portion between the bent portions is sandwiched between the die pad 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.

HOT PRESS LINE AND METHOD OF MANUFACTURING HOT-PRESS-FORMED PRODUCT
20230158560 · 2023-05-25 · ·

A hot press line (100) includes: a heating device (30); a first press device (10) having first die parts (1A, 1B); a second press device (20) having second die parts (2A, 2B); a first transportation device (41) that transports a metal sheet (B) to the first press device; and a second transportation device (42) that transports the metal sheet (B) to the second press device. One of the pair of first die parts and the pair of second die parts includes a clearance portion (1Ac) recessed inwardly, whereas the other pair of die parts includes an abutment surface (2At) in at least part of the portion corresponding to the clearance portion (1Ac) of the one pair of die parts, where the abutment surface abuts the metal sheet (B) when the die is at the bottom-dead center.

METHOD FOR MANUFACTURING PRESSED COMPONENT, METHOD FOR MANUFACTURING BLANK MATERIAL, AND STEEL SHEET

A technology capable of suppressing end cracking due to a delayed fracture without restrictions on the target pressed component shape. When it is estimated that the end cracking due to the delayed fracture in an end of a material to be pressed is concerned, double cutting processing including performing cutting processing of the end containing at least a place where the end cracking is concerned twice is provided as preprocessing for the press forming causing the concern about the end cracking. The double cutting processing includes performing, in first cutting, cutting to form a partial beam-shaped projection portion at a position containing the place where the end cracking is concerned, and cutting the projection portion in second cutting.

PRESS FORMING TOOL AND PRESS FORMING METHOD
20230182189 · 2023-06-15 · ·

A press forming tool is configured to form a press forming part including: a top portion having a convex and concave outer edge part; and a flange portion. The press forming tool includes: an upper die and a lower die; and a lower pad and an upper pad, which sandwich a blank in cooperation with the upper die and the lower die, in which, during an initial stage of forming, the flange portion is formed on the convex outer edge part, and a torsional shape portion having a torsional shape toward the concave outer edge part is formed continuously from the flange portion, and during a late stage of forming, the torsional shape portion is formed into the flange portion, and the flange portion is formed in the concave outer edge part so as to achieve formation of a target shape.

Flange projection control system and method

Embodiments provide a tooling station for forming containers that includes a blank and draw punch configured to blank off a portion of stock from a stock element and draw the portion of stock to form a cup. The blank and draw punch includes a blank and draw punch curved edge disposed between a blank and draw punch inner circumferential wall and a blank and draw punch proximal surface. The blank and draw punch curved edge has a radius of curvature that varies along its circumference. The tooling station also includes a draw-redraw die configured to redraw the cup to form a can having a flange. The draw redraw die includes a draw-redraw die curved edge disposed between a draw-redraw die inner circumferential wall and a draw-redraw die proximal surface. The draw-redraw die curved edge has a radius of curvature that varies along its circumference.

Container, and selectively formed cup, tooling and associated method for providing same

A container, such as a beverage or food can is provided, which includes a first sidewall, a second sidewall and a bottom portion extending between the first and second sidewalls. The material of the bottom portion is stretched relative to the first sidewall and the second sidewall to form a thinned preselected profile, such as a dome. The material of the container at or about the dome has a substantially uniform thickness. The container is formed from a blank of material, which has a base gauge prior to being formed. After being formed, the blank of material of the container at or about the dome has a thickness less than the base gauge. Tooling having a clamp bead, or a progressive clamp bead, for selectively forming a blank of material into a container, as well as an associated method are also disclosed.

PRESSED COMPONENT MANUFACTURING METHOD, DIE DESIGNING METHOD, DIE SHAPE DESIGNING DEVICE, AND DIE

A pressed component manufacturing method wherein, in press forming a metal sheet into a final component shape through two or more press steps, the inflow amount of the required material is determined based on the increase in the cross-sectional line length of the shape with respect to the line length before forming when the metal sheet is press formed by a single press step, the determined amount is distributed to each step, and a preformed shape after press forming based on the distributed inflow amount. As the cross section, a line orthogonal to a direction in which the material flows when the metal sheet is drawn is set, and a plurality of cross sections is set which is individually cut by each of planes orthogonal to the line and extending in a direction along the sheet thickness direction of the metal sheet before forming.