The invention relates to a device for processing a workpiece, said device including the following features: a punch on one side of the workpiece, a die on the opposite side of the workpiece, and a conductive electric heating system for generating an electric current that flows through the workpiece starting from a component situated on one side of the workpiece outside of the punch to a component situated on the opposite side of the workpiece outside of the die.

The present disclosure provides a method to assemble castings for use in a press brake. A modular press brake is also provided, the modular press brake having a socket connection between the base rail and the bending rail. The press brake is also comprised of a measuring tool having a magnet to engage and disengage from the press brake. An extension allows for cutters to travel from the press brake onto the extension and better cut or bend wider sheet metal. The press brake may be comprised of a stopper pivotable about an axis to quickly prevent or allow the passage of sheet metal in the press brake. The modular press brake is comprised of rails, extruded and fitted into one another. Adjacent rails can be secured to one another by means of fasteners, such that the press brake can be of any length as desired.

A table assembly is used to support a workpiece to facilitate bending of the workpiece. The table assembly is attached to a press brake system and include a base and a clamp. The clamp is movable relative to the base to enable placement of the workpiece onto the base, and the clamp secures the workpiece to the base to block relative movement between the workpiece and the press brake system without additional user operations. The workpiece is secured via the table assembly without a manual force (e.g., to hold the workpiece in place) while the press brake system operates to bend the workpiece. The table assembly reduces, limits, or eliminates certain user operations during metalworking. The table assembly improves user experience (e.g., reduce an amount of manual labor) and/or efficiency associated with press brake operations.

A table assembly is used to support a workpiece to facilitate bending of the workpiece. The table assembly is attached to a press brake system and include a base and a clamp. The clamp is movable relative to the base to enable placement of the workpiece onto the base, and the clamp secures the workpiece to the base to block relative movement between the workpiece and the press brake system without additional user operations. The workpiece is secured via the table assembly without a manual force (e.g., to hold the workpiece in place) while the press brake system operates to bend the workpiece. The table assembly reduces, limits, or eliminates certain user operations during metalworking. The table assembly improves user experience (e.g., reduce an amount of manual labor) and/or efficiency associated with press brake operations.

A workpiece is formed into a curved shape that has curvatures in the longitudinal and width directions required for a final closed cross-sectional shape. The formed workpiece is bent in a direction that left and right side wall portions approach each other by clamping the bottom portions between a punch and pad in a plate-thickness direction. A pair of flange portions are butted against each other while the formed bottom portions of the workpiece are placed on a pad; and a die cavity having the same shape as the final closed cross-sectional shape is defined between a support surface of the pad supporting the bottom portion and pressing surfaces of a pair of pressure cams pressing the left and right side wall portions. Then, the pair of flange portions are depressed toward the cavity using depressing portions of a second punch disposed above the pair of flange portions.

A workpiece is formed into a curved shape that has curvatures in the longitudinal and width directions required for a final closed cross-sectional shape. The formed workpiece is bent in a direction that left and right side wall portions approach each other by clamping the bottom portions between a punch and pad in a plate-thickness direction. A pair of flange portions are butted against each other while the formed bottom portions of the workpiece are placed on a pad; and a die cavity having the same shape as the final closed cross-sectional shape is defined between a support surface of the pad supporting the bottom portion and pressing surfaces of a pair of pressure cams pressing the left and right side wall portions. Then, the pair of flange portions are depressed toward the cavity using depressing portions of a second punch disposed above the pair of flange portions.

A rotary bending device for bending workpiece includes a saddle, a rocker, and first and second alignment elements. The saddle includes a longitudinally extending cavity in which the rocker is received, and the rocker rotates relative to the saddle between a neutral position and a bending position for bending the workpiece. The first alignment element is provided on the rocker, and the second alignment element is positioned to engage the first alignment element to limit axial movement of the rocker relative to the saddle during rotation of the rocker between the neutral position and the bending position. The rocker may tangentially contact a bearing surface of the cavity at no more than two lines of tangential contact during rotation. The rocker may further include a longitudinally extending shoulder, and the device may further include a return element positioned to contact the shoulder for biasing the rocker toward the neutral position.

The invention relates to a bending machine (1) for bending sheet metal workpieces (2), for example a press brake or a folding machine, comprising at least one tool carrier (3), wherein a plurality of tool parts (5) that can be moved along a horizontal tool receptacle (4) are arranged on at least one tool carrier (3), at least one adjusting device (6) for moving the tool parts (5), and coupling devices (14) associated with the tool parts (5), each for connecting a respective tool part (5) to the adjusting device (6). Furthermore, according to the invention the adjusting device (6) may comprise a threaded spindle (7) extending parallel to the tool receptacle (4) and each coupling device (14) may comprise a spindle nut segment (15), wherein the spindle nut segment (15) can be coupled to the tool part (5) or to the threaded spindle (7).

The invention relates to a bending machine (1) for bending sheet metal workpieces (2), for example a press brake or a folding machine, comprising at least one tool carrier (3), wherein a plurality of tool parts (5) that can be moved along a horizontal tool receptacle (4) are arranged on at least one tool carrier (3), at least one adjusting device (6) for moving the tool parts (5), and coupling devices (14) associated with the tool parts (5), each for connecting a respective tool part (5) to the adjusting device (6). Furthermore, according to the invention the adjusting device (6) may comprise a threaded spindle (7) extending parallel to the tool receptacle (4) and each coupling device (14) may comprise a spindle nut segment (15), wherein the spindle nut segment (15) can be coupled to the tool part (5) or to the threaded spindle (7).

A combination machine for folding and die bending a workpiece includes a lower tool holder configured to releasably receive at least one lower bending tool; an upper tool holder configured to releasably receive at least one upper bending tool and which can be advanced in a straight line in an advancing direction toward the lower tool holder; a pivotable tool holder configured to releasably receive at least one bending tool to be pivoted and which can be pivoted relative to the lower tool holder about a pivot axis running perpendicular to the advancing direction of the upper tool holder; and a machine body on which the upper tool holder is arranged. The machine body is configured to absorb bending forces occurring in the advancing direction of the upper tool holder and bending forces occurring during pivoting of the pivotable tool holder depending on the progress of the bending process.