A method for manufacturing a pressed component including forming a metal sheet into a pressed component shape having: a cross section having a top sheet portion and a side wall portion continuous to at least one side in the width direction of the top sheet portion via a first bent portion; and having one or two or more curved portions in which the top sheet portion is curved to project or to be recessed in a side view along the longitudinal direction in the direction intersecting the cross section, the method which includes: a first preliminary forming step having a step of forming, to the metal sheet, first beads extending along the longitudinal direction at a position where the first bent portion is formed; and a first component forming step of forming the metal sheet after the first preliminary forming step into the pressed component shape.

This press forming method includes a first drawing step for forming a first drawn step portion, a second drawing step for forming a second drawn step portion, and a finishing step for completing a stepped portion. In the first drawing step, a first outside curved portion is formed to the outside of a second outside curved portion with respect to an extension region of a character line, and a first parallel portion is formed to the same depth as the drawn depth of a second parallel portion. In the second drawing step, a second inside curved portion having a greater curvature than a first inside curved portion is formed.

This press forming method includes a first drawing step for forming a first drawn step portion, a second drawing step for forming a second drawn step portion, and a finishing step for completing a stepped portion. In the first drawing step, a first outside curved portion is formed to the outside of a second outside curved portion with respect to an extension region of a character line, and a first parallel portion is formed to the same depth as the drawn depth of a second parallel portion. In the second drawing step, a second inside curved portion having a greater curvature than a first inside curved portion is formed.

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.

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.

This structural member (W1) is manufactured using a structural member manufacturing device including: a first clamping part (10) having a first lower clamping member (11) and a second upper clamping member (12) disposed to face each other and capable of being opened and closed; a second clamping part (20) having a third lower clamping member (21) and a fourth upper clamping member (22) disposed to face each other corresponding to the first lower clamping member (11) and the second upper clamping member (12) and capable of being opened and closed; and clamping part driving means for allowing the first clamping part (10) and the second clamping part (20) to be relatively separated from each other while causing a position in an X-axis direction and a position in a Z-axis direction to correspond to each other. That is, the structural member (W1) is manufactured by a structural member manufacturing method in which the first clamping part (10) and the second clamping part (20) are relatively separated from each other by the clamping part driving means.

This structural member (W1) is manufactured using a structural member manufacturing device including: a first clamping part (10) having a first lower clamping member (11) and a second upper clamping member (12) disposed to face each other and capable of being opened and closed; a second clamping part (20) having a third lower clamping member (21) and a fourth upper clamping member (22) disposed to face each other corresponding to the first lower clamping member (11) and the second upper clamping member (12) and capable of being opened and closed; and clamping part driving means for allowing the first clamping part (10) and the second clamping part (20) to be relatively separated from each other while causing a position in an X-axis direction and a position in a Z-axis direction to correspond to each other. That is, the structural member (W1) is manufactured by a structural member manufacturing method in which the first clamping part (10) and the second clamping part (20) are relatively separated from each other by the clamping part driving means.

Provided are an integrated connector and a heat exchanger including the same, which may prevent assembly defects and leaks of a heat exchanger because the connector may be manufactured with precise dimensions, and is easy to manufacture, by integrally forming the connector that connects and firmly couples a header tank and a gas-liquid separator so that a heat exchanger medium communicates in the heat exchanger such as a condenser, in which the integrated connector is formed by molding a first pipe portion inserted into a hole of the header tank, a first flange portion in surface contact with an outer surface of the header tank, a second pipe portion inserted into a hole of the gas-liquid separator, and a second flange portion in surface contact with an outer surface of the gas-liquid separator so as to be connected to one another and have an interior communicating with one another.

A press-hardened shaped sheet-metal part, in particular a pillar reinforcement for a motor vehicle bodyshell, which has different sheet thicknesses and strengths, with an unhardened first region, or a first region which is hardened only to a small extent, and with a press-hardened second region, wherein the second region has a larger or smaller sheet thickness than the first region. A transition region, which, starting from the first region, has a sheet thickness transition zone, an intermediate zone, and a strength transition zone, is formed between the first region and the second region.

A press-hardened shaped sheet-metal part, in particular a pillar reinforcement for a motor vehicle bodyshell, which has different sheet thicknesses and strengths, with an unhardened first region, or a first region which is hardened only to a small extent, and with a press-hardened second region, wherein the second region has a larger or smaller sheet thickness than the first region. A transition region, which, starting from the first region, has a sheet thickness transition zone, an intermediate zone, and a strength transition zone, is formed between the first region and the second region.