In a step-bending die device, the die has a horizontal surface and an inclined surface, forming a semicircular groove with a semicircular cross section along a longitudinal direction on the horizontal surface and installing a semicircular rotary blade rotatably in the semicircular groove. The punch has a horizontal surface and an inclined surface, forming a semicircular groove with a semicircular cross section in a longitudinal direction on the horizontal surface and installing a semicircular rotary blade rotatably in the semicircular groove. Vertical notches at positions changing from the horizontal surfaces to the inclined surfaces are formed in longitudinal directions in the die and the punch so that top portions of the die and the punch are formed. The punch is assembled so that the horizontal surface of the punch faces the inclined surface of the die, and the inclined surface of the punch faces the horizontal surface of the die.

A first-face forming portion of a workpiece and a second-face forming portion spaced apart from it by the length of an intermediate portion are clamped with a first-face forming die and a second-face forming die, respectively. The first-face forming die is moved either upward or downward and the second-face forming die is moved in a direction toward the first-face forming die, and the second-face forming die is pressed against the first-face forming die to shape the upright wall portion.

A method, system, and apparatus for a part forming system. The part forming system comprises a field shaper having a cavity configured to receive a workpiece and a die. The field shaper has a number of dimensions based on being inserted into a main coil. The workpiece is bent to form a part with a desired shape when an electromagnetic field from the main coil is applied to the field shaper while the filed shaper is located within the main coil.

A method, system, and apparatus for a part forming system. The part forming system comprises a field shaper having a cavity configured to receive a workpiece and a die. The field shaper has a number of dimensions based on being inserted into a main coil. The workpiece is bent to form a part with a desired shape when an electromagnetic field from the main coil is applied to the field shaper while the filed shaper is located within the main coil.

A cross edge rolling process for increasing a thickness of a strip in longitudinal edge strips on both longitudinal sides of the strip. According to the invention, this is achieved in that firstly a step extending in the longitudinal direction of the strip is produced by means of a roll profiling process, wherein the strip is supported during the cross edge rolling process on said step against a compression force acting transversely to the strip, so that the strip is not compressed outside the longitudinal edge strip. After the edging process for increasing the thickness of the longitudinal edge strips, the strip is bent by means of a roll profiling process to form a C-profile rail.

In a step-bending die device, the die has a horizontal surface and an inclined surface, forming a semicircular groove with a semicircular cross section along a longitudinal direction on the horizontal surface and installing a semicircular rotary blade rotatably in the semicircular groove. The punch has a horizontal surface and an inclined surface, forming a semicircular groove with a semicircular cross section in a longitudinal direction on the horizontal surface and installing a semicircular rotary blade rotatably in the semicircular groove. Vertical notches at positions changing from the horizontal surfaces to the inclined surfaces are formed in longitudinal directions in the die and the punch so that top portions of the die and the punch are formed. The punch is assembled so that the horizontal surface of the punch faces the inclined surface of the die, and the inclined surface of the punch faces the horizontal surface of the die.

A method for manufacturing a locking arm of a carrier connecting rod includes four steps to press a metal sheet via a first stamping die and a second stamping die to form the metal sheet to include a front section, a bent middle section and a rear section. A stopper is formed to the front section, and a recessed area is formed to one side of the bent middle section. A positioning hole is defined through a center of the recessed area. A guide surface is formed to the bent middle section opposite to the recessed area. The locking arm is pivotably connected to the extendable tube of the carrier connecting rod, and the protrusion of the spring member in the extendable tube is guided by the guide surface to be retractably engaged with the positioning hole. The locking arm is manufactured at low cost and has better structural strength.

Apparatuses and methods for forming a joggle and a longitudinal ridge in a multi-ply composite charge are disclosed. Charges may be formed in a forming press that comprises a joggled die, with a longitudinal ridge and a joggle that crosses the longitudinal ridge, and a conforming die, with a series of longitudinally-spaced die fingers. The die fingers include pairs of die members configured to move laterally between a closed position and an open position, with each die member configured to tilt longitudinally.

A punch (2) and a pad (5) are opposed to each other such that a molded portion (3a) of a metal laminate film (3) to be processed is interposed between the punch (2) and the pad (5). An enclosed space (6, 7) is compressed to raise only the temperature of the molded portion (3a) while keeping the vicinity of the molded portion (3a) at a low temperature (S1, S2). After that, the enclosed space (6, 7) is moved with respect to the molded portion (3a) to perform first molding (S3) on the molded portion (3a), and then gas in the enclosed space (6) is released to perform second molding (S4) on the molded portion (3a) by means of the punch (2) and the pad (5).

A punch (2) and a pad (5) are opposed to each other such that a molded portion (3a) of a metal laminate film (3) to be processed is interposed between the punch (2) and the pad (5). An enclosed space (6, 7) is compressed to raise only the temperature of the molded portion (3a) while keeping the vicinity of the molded portion (3a) at a low temperature (S1, S2). After that, the enclosed space (6, 7) is moved with respect to the molded portion (3a) to perform first molding (S3) on the molded portion (3a), and then gas in the enclosed space (6) is released to perform second molding (S4) on the molded portion (3a) by means of the punch (2) and the pad (5).