This method for manufacturing a panel-like formed article has preparing a blank material made of a metal sheet having a tensile strength of 390 MPa or more and 980 MPa or less; and press-forming the blank material in a cold manner using a pressing apparatus to form the blank material into the panel-like formed article, in the press-forming, a blank holder, a first punch, and a second punch are relatively moved with respect to a die, thereby pressing the first punch and the second punch to the blank material, and pressing of the second punch to the blank material is completed before pressing of the first punch to the blank material.

A shell, a container employing the shell, and tooling and associated methods for forming the shell are provided. The shell includes a center panel, a circumferential chuck wall, an annular countersink between the center panel and the circumferential chuck wall, and a curl extending radially outwardly from the chuck wall. The material of at least one predetermined portion of the shell is selectively stretched relative to at least one other portion of the shell, thereby providing a corresponding thinned portion. The tooling includes a pressure concentrating forming surface.

A shell, a container employing the shell, and tooling and associated methods for forming the shell are provided. The shell includes a center panel, a circumferential chuck wall, an annular countersink between the center panel and the circumferential chuck wall, and a curl extending radially outwardly from the chuck wall. The material of at least one predetermined portion of the shell is selectively stretched relative to at least one other portion of the shell, thereby providing a corresponding thinned portion. The tooling includes a pressure concentrating forming surface.

A metal blank is clamped between upper and lower binders with the metal blank engaging against a protrusion extending from a binder surface of any of the upper binder, the lower binder, and both upper and lower binders, to create a binder gap between the metal blank and the binder surface adjacent the protrusion. The binder gap prevents cooperating springback control binder elements of the binder surface from actively engaging the metal blank. The metal blank is drawn into a cavity, with the protrusion riding on the metal blank until the protrusion falls off an edge of the metal blank, which closes the binder gap between the metal blank and the binder surface causing the cooperating springback control binder elements to actively engage the blank for the post-forming stretching operation.

A metal blank is clamped between upper and lower binders with the metal blank engaging against a protrusion extending from a binder surface of any of the upper binder, the lower binder, and both upper and lower binders, to create a binder gap between the metal blank and the binder surface adjacent the protrusion. The binder gap prevents cooperating springback control binder elements of the binder surface from actively engaging the metal blank. The metal blank is drawn into a cavity, with the protrusion riding on the metal blank until the protrusion falls off an edge of the metal blank, which closes the binder gap between the metal blank and the binder surface causing the cooperating springback control binder elements to actively engage the blank for the post-forming stretching operation.

Shock absorbers (33) are attached to a press apparatus (10). The press apparatus (10) has a lower die unit (11) and an upper die unit (21) that is movable in vertical directions; the lower die unit and the upper die unit are capable of cooperating with each other to perform press-forming on a blank (W). The upper die unit (21) has an upper forming die (22) that serves as a forming die to perform press-forming on the blank (W) and upper blank holders (25) that partially serve as blank holders. The shock absorbers (33) are respectively disposed between the upper forming die (22) and the upper blank holders (25), and when the upper die unit (21) is moved upward away from the lower die unit (11) to open the upper and lower forming dies after press-forming is performed on the blank (W), impact applied to the upper blank holders (25) by the upper forming die (22) are respectively absorbed by the shock absorbers (33).

Shock absorbers (33) are attached to a press apparatus (10). The press apparatus (10) has a lower die unit (11) and an upper die unit (21) that is movable in vertical directions; the lower die unit and the upper die unit are capable of cooperating with each other to perform press-forming on a blank (W). The upper die unit (21) has an upper forming die (22) that serves as a forming die to perform press-forming on the blank (W) and upper blank holders (25) that partially serve as blank holders. The shock absorbers (33) are respectively disposed between the upper forming die (22) and the upper blank holders (25), and when the upper die unit (21) is moved upward away from the lower die unit (11) to open the upper and lower forming dies after press-forming is performed on the blank (W), impact applied to the upper blank holders (25) by the upper forming die (22) are respectively absorbed by the shock absorbers (33).

A molding recessed part of a lower mold constituting a press molding device is provided with a first blank holder, and a circular second blank holder is freely movably provided on one outer peripheral side of the first blank holder. Meanwhile, of first and second blank holes opened in blank material, straight-line parts of the second blank hole have formed therein a pair of tensile force adjusting parts, and arched parts of first and second opening parts are mounted on the second blank holder. Furthermore, when draw forming of the blank material is performed, the tensile force imparted to the straight-line parts to the outside is adjusted by the tensile force adjusting parts, and the tensile force imparted to the arched parts to the outside in the radial direction is adjusted by the second blank holder.

A molding recessed part of a lower mold constituting a press molding device is provided with a first blank holder, and a circular second blank holder is freely movably provided on one outer peripheral side of the first blank holder. Meanwhile, of first and second blank holes opened in blank material, straight-line parts of the second blank hole have formed therein a pair of tensile force adjusting parts, and arched parts of first and second opening parts are mounted on the second blank holder. Furthermore, when draw forming of the blank material is performed, the tensile force imparted to the straight-line parts to the outside is adjusted by the tensile force adjusting parts, and the tensile force imparted to the arched parts to the outside in the radial direction is adjusted by the second blank holder.

The present invention relates to a method for producing a dimensionally stable sheet metal component, wherein the method includes preforming a metal sheet into a sheet metal preform comprising at least one base region, a frame region, a transitional region between the base region and the frame region, optionally a flange region and a transitional region between the frame region and the flange region, wherein at least one of the regions comprises excess material at least in portions. The sheet metal preform is cut at least in portions to form a cut sheet metal preform with a sheet metal preform The sheet metal preform is one of swagged and calibrated which has been cut at least in portions to form a substantially finished formed sheet metal component.