Abstract: The invention relates to a production system (1) comprising a bending tool (11), a tool store (12), a bending machine (4) and a manipulation device (13) which performs a travelling movement from a tool store position located in the region of the tool store (12) to a machine operating position located in the region of the bending machine (4). A first coupling element (18) is arranged on the manipulation device (13) and a second coupling element (19) is arranged on the bending machine (4). In the machine operating position, the two coupling elements (18, 19) are coupled together, through which the manipulation device (13) is fixed in position relative to the bending machine (4) and thus a reference position is set.

Abstract: A bending die for pre-bending a workpiece section includes a die section with a slot for partially receiving a bending punch for hemming a workpiece section during hemming, the slot leading from a bearing surface into the interior of the bending die, and a hemming section, arranged laterally with respect thereto, with a hemming surface. The bending punch includes a punch section (12) extending from a punch base surface and a hemming section, arranged laterally thereto, with a hemming surface. In this case, the hemming surface on the bending die is set back in a step-like manner with respect to a bearing surface of the die section, with the result that a stop surface extending from the bearing surface to the hemming surface is formed and the hemming section on the bending punch protrudes with respect to the punch base surface in the direction of the punch tip, with the result that the hemming surface protrudes in a step-like manner with respect to the punch base surface.

Abstract: The invention relates to a bending machine (1) for bending a sheet metal workpiece (2), comprising at least three bending punches (4,5,6) which respectively have working edges (7,8,9) which are aligned parallel with one another. Relative to an initial plane (3) in which a bend section (10) to be made in the sheet metal workpiece (2) lies, the first and the second bending punch (4,5) are positioned on one side and the third bending punch (6) is positioned on the opposite side of the initial plane (3). The working edge (9) of the third bending punch (6) is displaceable between the working edges (7,8) of the first and second bending punches (4,5). The third bending punch (6) has at least one rotary and one translatory degree of freedom in a reference plane oriented at a right, angle to a working edge (7,8,9). The second bending punch (5) has three degrees of freedom in the reference plane (19).

Abstract: The invention relates to a lower tool (1) having a longitudinal-offset measuring device (2), which lower tool (1) is part of a bending tool arrangement for use in a bending press. The lower tool (1) has a tool body (3) having a longitudinal extension (4), in which longitudinal extension (4) a bending recess (5) is provided. The bending recess (5) extends from an upper flat side (6) of the tool body (3) into the latter and is formed at least by two contact surfaces (7). The transition from the upper flat side (6) into the bending recess (5) forms a contact edge (8), which contact edge (8) forms a contact line (9) in the longitudinal extension (4). A sensor (10) for determining a longitudinal offset (18) is arranged in the region of the contact line (9), wherein a sensing portion (11) of the sensor (10) is oriented in the direction of a metal sheet (16) to be bent.

Abstract: The invention relates to a bending press (1) and/or feeding device (2) for feeding a bending press (1) with bending tools (5, 6), comprising: at least one tool holder (3, 4; 13, 14) with a rail (7) comprising an inner profile (8) for receiving and displacing a bending tool (5, 6); and at least one transfer device (15) which can be driven by a drive (21) for displacing a bending tool (5, 6) inside the tool holder (3, 4; 13, 14) and/or between the tool holder (13, 14) of the feeding device (2) and a tool holder (3, 4) of a bending press (1), and the transfer device (15) comprises a releasable coupling (18) for connecting a bending tool (5, 6), said transfer device (15) being guided in the rail (7) of the tool holder (3, 4; 13, 14) and the active area of the coupling (18) is arranged at least partially inside the rail (7).

Abstract: The invention relates to a bending press (1) and/or a loading device (2) for loading a bending press (1) with bending tools (5, 6), comprising: at least one tool holder (3, 4; 13, 14) with a rail (7) having an inner profile (8) for receiving and displacing a bending tool (5, 6), at least one internal wall (9) of the rail (7) forming a guide structure (10) extending in the longitudinal direction of the rail (7); and at least one transfer device (15) drivable by a drive (21) for displacing a bending tool (5, 6) within the tool holder (3, 4; 13, 14) and/or between the tool holder (13, 14) of the loading device (2) and a tool holder (3, 4) of a bending press (1), wherein at least one portion of the transfer device (15) is guided by the guide structure (10) formed in the rail (7).

Abstract: The invention relates to a tool handling system (1) for removing or inserting a bending tool (2) in a tool mounting (3), comprising a bending tool (2) having a gripping recess (16) and a locking device (7) that cooperates with the tool mounting (3), the locking device being deactivatable by an actuating element (10) which is arranged in the gripping recess (16) and is accessible therein, and further comprising a gripper (11) with a gripper base body (12), comprising a first gripper finger (14) arranged on the gripper base body and at least a second gripper finger (15) which is adjustable on the gripper base body (12) by means of an articulation (20). The invention is characterized in that the first gripper finger (14), when positioned in the gripping recess (16), and the adjustable second gripper finger (15), when positioned in a release position, do not contact the actuating element (10) and that the adjustable second gripper finger (15) contacts the actuating element (10) in a gripping position.

Abstract: The invention relates to a bending angle measuring method for a bending machine (1), in particular a bending press or brake press, and the bending machine (1) has a bending tool arrangement (2) with at least one upper (3) and lower tool (4). A sheet to be formed (5) is placed in the bending tool arrangement (2). A light pattern (13) is emitted onto a section by means of a lighting device (11) of a bending angle measuring device (7), the section being a single part and surrounding a sub-region on a lateral surface of the lower tool (4) and of the sheet (5) placed in the bending tool arrangement. The light pattern (13) on the lower tool (4) and on the sheet (5) is detected by an image detecting device (10) of the bending angle measuring device (7), and a bending angle is ascertained from detected light pattern (13) by an analysis module.

Abstract: The invention concerns a bending tool (6) with an actuating element (19) accessible outside the tool receptacle, with coupled to it a locking element (20) with a locking catch (21) for securing the bending tool (6) in the tool receptacle. The first end portion (32) of the actuating element (19) has an actuating face (33) arranged on the end side and the second end portion (34) of the actuating element (19) has an actuating recess (35). The invention further concerns a gripping device (14) for manipulating a bending tool (6), comprising a first gripping arm (59) and a second gripping arm (60) displaceable relative to the first gripping arm (59) in the clamping direction (64), said gripping arms (59) being formed to engage in a gripping groove (23, 24) of the bending tool (6) and to clamp the bending tool (6).

Abstract: The invention concerns a bending angle measuring device (23), which has an illumination device (25) with at least one light source (26), and an optical means of detection (29) with a light-detecting surface (30). On the bending angle measuring device (23) is arranged at least one axisymmetric body (32) with a reflecting surface (33), wherein a central axis (34) of the axisymmetric body (32) is arranged such that it is aligned parallel to the bending edge, wherein a first light beam (37 transmitted by the illumination device (25) is reflected from the sheet metal part (4) and as a second light beam (39) is directed onto the axisymmetric body (32), and the second light beam (39) is reflected on the axisymmetric body (32), and as a third light beam (40) is directed onto the optical means of detection (29), in particular onto its light-detecting surface (30).

Abstract: The invention relates to a method for bending a workpiece (1) of sheet metal, whereby a deformation region (6), in particular a strip-shaped region, on the workpiece (1) containing the bent edge to be produced (5) is heated before and/or during the bending process to a deforming temperature below the fusion temperature of the metal to increase deformability locally. In order to reduce undesirable deformation due to shrinkage stress, the workpiece (1) is heated before and/or during and/or after the bending operation in at least one heating zone (11) that is different from the deformation region (6) by means of the application of energy from outside the workpiece (1) starting from an initial temperature to a processing temperature below the fusion temperature of the metal.

Abstract: An industrial machine (1) for bending metallic flat elements (E) comprising a support framework (2) which insists on a reference surface (T), a working plan (3), connected to the support framework (2) and accessible to the operator, adapted to receive the metallic flat element (E) to be folded, bending means (4), arranged frontally to the working plan (3) and coupled to the support frame (2), suitable to bend upwards and/or downwards at least one side edge of the metallic flat element (E), handling and supply means (5), operatively connected to the working plan (3), suitable for supplying/removing the metallic flat element (E) to/from the bending means (4), and actuation means (6), operatively connected to the handling and supply means (5) to move them along a vertical direction (Y) and/or horizontal direction (X) determining the displacement with respect to the working plan (3).

Abstract: The invention relates to a bending press (3) and to a method for bending sheet metal in relation to a work piece (2). The bending press (3) comprises a machine frame (7) on which lower and upper clamping jaws (5, 6) are arranged, having first and second reshaping edges. A bending tool (41) having a bending edge (42) is arranged on a bending bar (43). The bending tool (41) is mounted about a swivel axis (46) such that same can swivel. The swivel axis (46) can be moved into both a position above and a position below a work piece contact plane (40). In a position above the work piece contact plane (40), the bending edge (42) is oriented down-wards in the direction of a first reshaping edge, and in a position below the work piece contact plane (40), said bending edge is oriented upwards in the direction of the second reshaping edge. The invention also relates to a method for reshaping, in particular bending, sheet metal in relation to a work piece (2).

Abstract: A drive device for a bending press, in particular a press brake, with a press frame includes a stationary press beam and has a press beam which can be displaced relative to the press beam by a beam adjusting device formed by a closed hydraulic system including a hydraulic pump with a controllable drive motor, at least one control valve and at least one hydraulic linear actuator. The linear actuator includes a first piston arrangement with a first piston dividing a cylinder chamber into a first pressure chamber and a second pressure chamber and, in another cylinder chamber, a second piston arrangement with another piston and at least one other pressure chamber. The first piston arrangement and the second piston arrangement are coupled with one another.

Abstract: The invention relates to a production plant (1) comprising a brake press (3) having press beams (13, 16), slot-shaped tool holders (19, 20) disposed and/or arranged on the press beams (13, 16), bending tools (4), a tool magazine (31) for at least one bending tool (4), a first manipulation device (30) for transporting the bending tool (4) between the tool magazine (31) and the tool holders (19, 20), and a second manipulation device (33) for positioning the bending tool (4) in the tool holder (19, 20). The second manipulation device (33) comprises at least one traction means (37) guided via two deflection means (35, 36), on which traction means (37) at least one pusher element (38) is disposed. The bending tool (5, 6) has a slot (46) extending in a direction (48) parallel with a bending edge (47) through which the at least one traction means (37) is run. The at least one slot (46) is further dimensioned such that the at least one pusher element (38) cannot be run through the slot (46).

Abstract: The invention relates to a production plant (1), in particular for folding workpieces (2) to be produced from sheet metal, comprising a bending press (3), in particular a press brake, having a press beam (13, 16), at least one bending tool (4), such as a bending punch (5) and bending die (6), which is connected to the press beam (13, 16), and at least one angle-measuring device (46) for determining an angular position of at least one limb (35, 36) of the workpiece (2) formed by a bending operation relative to a reference plane (41, 42). The angle-measuring device (46) comprises at least one inclination sensor (39) having a reference surface (40) and the inclination sensor (39) is mounted by the angle-measuring device (46) so that it can be placed with the reference surface (40) lying in contact with a surface portion of at least one of the limbs (35, 36) of the workpiece (2).

Abstract: The invention relates to a tool changing device (1) for a forming press (2), in particular a press brake, comprising at least one tool magazine (3, 4) and at least one transfer device (5, 6) for the transfer of the forming tools (7, 8) of the at least one tool magazine (3, 4), which are storable in the at least one tool magazine (3, 4), from the at least one tool magazine (3, 4) to the forming press (2) and in the reverse direction, wherein the at least one transfer device (5, 6) has a drivable thrust chain (9, 10) for the transmission of compressive and tensile forces.

Abstract: 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).

Abstract: The invention relates to a support device (15) for a press brake, comprising a base frame (24) and a support plate (17) with a bearing surface (18) which can be positioned between a base position (26) and a maximum position (27). The support plate (17) is arranged on a lever linkage system (25) which is connected to a drive unit (32) and which is designed as a parallel kinematics system. The drive unit (32) comprises a crank (35), which is connected to a positioning drive (33) designed as a rotary drive (34), and a rocker (54), which is connected to the crank in an articulated manner. The rocker (54) is connected to the crank (35) by means of an eight rotary joint (55) and to the lever linkage system (25) by means of a ninth rotary joint (56).

Abstract: The invention relates to a rear stop unit (7) with a stop and/or gripping and/or measuring element (10) for positioning a sheet (3) to be machined on a bending press. The stop and/or gripping and/or measuring element (10) is arranged on an adjustable bearing arm (13) by means of a pivot joint (12). The bearing arm (13) is connected to a guide rail (20) by means of an additional pivot joint (18) via a guide element (19). The rear stop unit (7) further comprises a support arm (21) which is connected to the bearing arm (13) via a joint (22) and to an additional guide element (24) via a rigid connection, and the support arm is connected to the guide rail (20) via the additional guide element. Furthermore, the joint (22) is designed as a rotational/prismatic joint. The position of the bearing arm (13) can thereby be adjusted by moving the support arm (21) in a linear manner along a guide direction (11) specified by the guide rail (20).