A method of producing a press-formed product includes a steel plate heating step, a hot forging step and a hot stamping step. In the steel plate heating step, a steel plate is heated to 950 C. or more. In the hot forging step, the heated steel plate is forged to form a varying-thickness steel plate. In the hot stamping step, the heated varying-thickness steel plate is subjected to press-working by a press tooling to form a press-formed product, and the press-formed product that is formed is cooled inside the press tooling. Thus, a press-formed product that has high strength and for which a reduction in weight is possible can be produced.

A method of producing a press-formed product includes a steel plate heating step, a hot forging step and a hot stamping step. In the steel plate heating step, a steel plate is heated to 950 C. or more. In the hot forging step, the heated steel plate is forged to form a varying-thickness steel plate. In the hot stamping step, the heated varying-thickness steel plate is subjected to press-working by a press tooling to form a press-formed product, and the press-formed product that is formed is cooled inside the press tooling. Thus, a press-formed product that has high strength and for which a reduction in weight is possible can be produced.

A system for transporting material is provided. The system includes a container and a robot having a material-handling device for inserting the material into the container and removing the material from the container. The system also includes a track assembly having a track and at least one platform on which the robot and the container are mounted such that the robot and the container are movable along the track via the at least one platform.

A system for transporting material is provided. The system includes a container and a robot having a material-handling device for inserting the material into the container and removing the material from the container. The system also includes a track assembly having a track and at least one platform on which the robot and the container are mounted such that the robot and the container are movable along the track via the at least one platform.

The invention relates to a device and method for producing at least partially closed profiles from metal sheet, having a first tool part, a second tool part, and at least one supporting core. The insertion movement of the supporting core between the bending jaws is limited by a stop and, in its insertion position limited by the stop, protrudes with respect to the bending jaws in the direction of the die, in that the supporting core is arranged on a carrier that is movable relative to the die, and in that the bending jaws are assigned at least one displacement element connected rigidly thereto, the displacement element coming into contact with the carrier when the bent metal sheet portion engages around the supporting core.

The workpiece conveying apparatus for a pressing machine includes: a rotary base rotatable about a substantially perpendicular axis; a first arm pivotally supported by the rotary base so as to be rockable within a substantially perpendicular plane; a coupler pivotally supported on a distal end side of the first arm so as to be rockable; a second arm having a proximal end side that is mounted to the coupler so as to be rockable; a cross bar mounted to a distal end side of the second arm so as to be rockable within a plane substantially parallel to a rocking plane of the second arm; and a workpiece holding device mounted to the cross bar.

The workpiece conveying apparatus for a pressing machine includes: a rotary base rotatable about a substantially perpendicular axis; a first arm pivotally supported by the rotary base so as to be rockable within a substantially perpendicular plane; a coupler pivotally supported on a distal end side of the first arm so as to be rockable; a second arm having a proximal end side that is mounted to the coupler so as to be rockable; a cross bar mounted to a distal end side of the second arm so as to be rockable within a plane substantially parallel to a rocking plane of the second arm; and a workpiece holding device mounted to the cross bar.

A chuck device in a robot hand is used when receiving a primary formed workpiece from electrode chucks. After receiving the primary formed workpiece, and before inserting the primary formed workpiece from its shaft stem part into an insertion hole in a forging press main body, a portion held by the electrode chucks of the primary formed workpiece is gripped by a chuck device different from the chuck device, to release the gripping of the primary formed workpiece by the chuck device. Therefore, it is possible to insert the holding portion held by the electrode chucks from the side of the shaft stem part of the primary formed workpiece into the insertion hole. Thereby providing a bar material transfer method capable of accurately inserting the bar material from its one end into a predetermined positioning hole even if a bar material serving as a workpiece is short.

A chuck device in a robot hand is used when receiving a primary formed workpiece from electrode chucks. After receiving the primary formed workpiece, and before inserting the primary formed workpiece from its shaft stem part into an insertion hole in a forging press main body, a portion held by the electrode chucks of the primary formed workpiece is gripped by a chuck device different from the chuck device, to release the gripping of the primary formed workpiece by the chuck device. Therefore, it is possible to insert the holding portion held by the electrode chucks from the side of the shaft stem part of the primary formed workpiece into the insertion hole. Thereby providing a bar material transfer method capable of accurately inserting the bar material from its one end into a predetermined positioning hole even if a bar material serving as a workpiece is short.

A workpiece conveying device capable of correctly positioning and conveying a workpiece that has a burr having an indefinite shape by means of a robot. A robot hand has first and second claws configured to move toward and away from each other. The first claw has a first contacting portion configured to come into contact with a lower surface of the burr, and a first clamping portion arranged at a front end of the first contacting portion and configured to come into contact with a main body of the workpiece. The second claw has a second contacting portion configured to come into contact with the lower surface of the burr, and a second clamping portion arranged at a front end of the second contacting portion and configured to come into contact with the main body. The first and second clamping portions cooperatively position and clamp the main body.