In a forming process with a press having in a frame a ram closing through the force of a cylinder with a moveable piston against a press table in a straight-line movement, the piston initially acts upon at least one knuckle joint system during the closing of the press, and a hydraulic cushion of the ram concludes the closing process with extension of the knuckle joint system in movement direction of the piston and straight-line support thereof against the frame. In a press having in a frame a ram closing through the force of a cylinder with a moveable piston against a press table in a straight-line movement, the ram is connected so as to be fixed with respect to the frame via at least two identically constructed knuckle joint systems, and the ram has a hydraulic cushion.

In a forming process with a press having in a frame a ram closing through the force of a cylinder with a moveable piston against a press table in a straight-line movement, the piston initially acts upon at least one knuckle joint system during the closing of the press, and a hydraulic cushion of the ram concludes the closing process with extension of the knuckle joint system in movement direction of the piston and straight-line support thereof against the frame. In a press having in a frame a ram closing through the force of a cylinder with a moveable piston against a press table in a straight-line movement, the ram is connected so as to be fixed with respect to the frame via at least two identically constructed knuckle joint systems, and the ram has a hydraulic cushion.

A forming apparatus which forms a metal pipe by expanding a metal pipe material, includes: a forming die for forming the metal pipe; a first electrode and a second electrode which clamp the metal pipe material at both end sides and heat the metal pipe material by causing an electric current to flow through the metal pipe material; and a first fluid supply unit and a second fluid supply unit which supply a fluid into the metal pipe material heated by the first electrode and the second electrode to expand the metal pipe material, wherein at least one of the first electrode and the second electrode is provided with a movement restriction mechanism which restricts a movement of the metal pipe material in an axial direction of the metal pipe material.

A molding apparatus capable of improving the quality of a molded article is provided. A control section controls a blowing mechanism to expand and mold a metal pipe material by supplying gas into the metal pipe material held between an upper mold and a lower mold by a pipe holding mechanism. The control section controls a driving section to mold a flange portion by crushing a second molded portion of the expanded metal pipe material in a sub-cavity portion between the upper mold and the lower mold. In a molding apparatus, the control section changes movement speed of a slide during the molding of the flange portion by controlling a servomotor. Accordingly, it becomes possible to control an operation of pressing at an appropriate movement speed according to the shape or the like of the flange portion. Accordingly, it is possible to improve the quality of a molded article.

A method for shaping a blank comprising a metal includes a step of loading die blank onto a first die, a step of bringing the first die and a second die together, a step of forming a seal around the blank, and a step of injecting a pressurized molten salt into a space in die blank to supply a hydraulic pressure to the blank.

A method for shaping a blank comprising a metal includes a step of loading die blank onto a first die, a step of bringing the first die and a second die together, a step of forming a seal around the blank, and a step of injecting a pressurized molten salt into a space in die blank to supply a hydraulic pressure to the blank.

A method for shaping a blank comprising a metal includes a step of loading the blank onto a first die, a step of bringing the first die and a second die together, a step of forming a seal around the blank, and a step of injecting a pressurized molten salt into a space in the blank to supply a hydraulic pressure to the blank.

A method for shaping a blank comprising a metal includes a step of loading the blank onto a first die, a step of bringing the first die and a second die together, a step of forming a seal around the blank, and a step of injecting a pressurized molten salt into a space in the blank to supply a hydraulic pressure to the blank.

A cylinder holder for a hydroforming device has a substantially cuboid cylinder holder body with a hydraulic cylinder seat to which a hydraulic cylinder can be fixed. The hydraulic cylinder is configured to supply a hydroforming fluid to a workpiece to be shaped. The cylinder holder further includes a base plate to which the cylinder holder body is fixed at a predetermined angle with an anti-rotation lock unit.

A cylinder holder for a hydroforming device has a substantially cuboid cylinder holder body with a hydraulic cylinder seat to which a hydraulic cylinder can be fixed. The hydraulic cylinder is configured to supply a hydroforming fluid to a workpiece to be shaped. The cylinder holder further includes a base plate to which the cylinder holder body is fixed at a predetermined angle with an anti-rotation lock unit.