An integrated molding device suitable for the bending and hemming of a flat sheet, comprising a stand, a worktable, a slider, and a turning beam. The stand comprises a frame structure composed of an upper cross beam, a lower cross beam, and columns on both sides, two ends of the slider are connected to the columns on both sides by means of a pair of sliding pairs A respectively, and the clutching of a bending die is achieved by means of the linear movement of the sliding pairs A; the worktable is fixed on the lower cross beam, and the clutching of a pressing die is achieved by means of the linear movement of the sliding pairs A; two ends of a swing frame are connected to the columns on both sides by means of one connecting block respectively, the connecting block and the columns are connected therebetween by means of a pair of rotating pairs B, and the connecting block and the swing frame are connected therebetween by means of a pair of sliding pairs C. The present device may achieve the bending or pressing of a flat sheet according to differences in the amount of up and down movements of the slider; and on the basis of the pressing of the flat sheet, the hemming of the flat sheet may be achieved in cooperation with the swinging of a swing beam.

An integrated molding device suitable for the bending and hemming of a flat sheet, comprising a stand, a worktable, a slider, and a turning beam. The stand comprises a frame structure composed of an upper cross beam, a lower cross beam, and columns on both sides, two ends of the slider are connected to the columns on both sides by means of a pair of sliding pairs A respectively, and the clutching of a bending die is achieved by means of the linear movement of the sliding pairs A; the worktable is fixed on the lower cross beam, and the clutching of a pressing die is achieved by means of the linear movement of the sliding pairs A; two ends of a swing frame are connected to the columns on both sides by means of one connecting block respectively, the connecting block and the columns are connected therebetween by means of a pair of rotating pairs B, and the connecting block and the swing frame are connected therebetween by means of a pair of sliding pairs C. The present device may achieve the bending or pressing of a flat sheet according to differences in the amount of up and down movements of the slider; and on the basis of the pressing of the flat sheet, the hemming of the flat sheet may be achieved in cooperation with the swinging of a swing beam.

A metal sheet for press forming has a shape such that a boundary position between the region corresponding to the curved portion and an other region in the region corresponding to a curved portion is rotationally displaced in-plane around a rotational center set at a position on a curved recessed side rather than a position corresponding to a ridge line between a top sheet portion and a vertical wall portion on the curved recessed side, in a direction in which a line length of an outer edge of a position to be formed into the flange portion on a curved protruding side in the region corresponding to a curved portion approaches a line length of an outer edge of the flange portion on the curved protruding side in the press-formed component shape.

Provided is a manufacturing apparatus for manufacturing a hat-shaped section component including a curved projection portion such that a to-become-top-plate portion is pressed by a punch in a state where a to-become-flange portion is sandwiched between a die and a holder. The manufacturing apparatus includes the punch having a first mold surface including a curved projection portion mold surface, the holder, and the die having a fourth mold surface facing the first mold surface. An opening is formed in a part, of the fourth mold surface, that corresponds to the curved projection portion mold surface. The manufacturing apparatus includes a pad provided in the die and having a fifth mold surface facing the curved projection portion mold surface, the pad being configured to be relatively movable upward against downward biasing force so that the fifth mold surface becomes flush with the fourth mold surface.

A method for manufacturing a press formed product is disclosed. The method for manufacturing a press formed product includes: when a metal sheet is press formed to manufacture a product having a product shape of a hat-shaped cross-section, in which a top plate part and a flange part are continuous in a width direction through a side wall part and the top plate part and the flange part curve convexly or concavely toward the top plate part along a longitudinal direction, a first step of manufacturing an intermediate component by press forming into a component shape having a hat-shaped cross-section, in which a curve of each of the top plate part and the flange part along the longitudinal direction has a second curvature radius smaller than a curvature radius in the product shape; and a second step of press forming the intermediate component into the product shape.

A method for the production of a closed hollow profile for a vehicle axle including the following steps: a) provision of a board made out of a sheet of metal, wherein the board has at least a length in a longitudinal direction and at least a width in a transverse direction, b) forming of the board, creating an open profile with a channel running in a longitudinal direction of the board, c) forming the lateral surfaces of the board, creating a hollow profile with a circumference and a longitudinal gap and d) joining together the longitudinal gap.

A method for the production of a closed hollow profile for a vehicle axle including the following steps: a) provision of a board made out of a sheet of metal, wherein the board has at least a length in a longitudinal direction and at least a width in a transverse direction, b) forming of the board, creating an open profile with a channel running in a longitudinal direction of the board, c) forming the lateral surfaces of the board, creating a hollow profile with a circumference and a longitudinal gap and d) joining together the longitudinal gap.

A frame system for a building structure includes beam members. Each beam member includes two opposed, parallel flanges. A web is interposed between the flanges. Spreader members include two opposed, parallel side flanges, a web interposed between the side flanges and two opposed end flanges bridging the side flanges at respective terminal ends of the web. The beam members and the spreader members are configured to be fastened to each other to form a frame assembly.

A frame system for a building structure includes beam members. Each beam member includes two opposed, parallel flanges. A web is interposed between the flanges. Spreader members include two opposed, parallel side flanges, a web interposed between the side flanges and two opposed end flanges bridging the side flanges at respective terminal ends of the web. The beam members and the spreader members are configured to be fastened to each other to form a frame assembly.

A method for manufacturing a press formed product is disclosed. The manufacturing method includes a first step of manufacturing an intermediate component by forming the curved part such that a line length along the longitudinal direction of a curved convex side WA is shorter than a line length in the product shape and a line length along the longitudinal direction of a curved concave side WB is longer than a line length in the product shape; and a second step of forming the intermediate component such that a line length of the curved convex side WA is longer than the line length in the first step and a line length of the curved concave side WB is shorter than the line length in the first step.