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).

Abstract: The invention relates to a machine controller comprising a sensor module (4), an evaluation module (9) and a control module (5), and the sensor module (4) has a convertor which converts a mechanical variable acting on the sensor module (4) into a proportional electric characteristic variable, and the evaluation module (9) is connected via a first signal connection (8) to the sensor module (4) and via a second signal connection (11) to the control module (5). The evaluation module (9) generates a signal profile from the detected electric signal by means of an analysis of potential and/or change, which is compared with at least one reference signal profile stored in a memory means of the evaluation module (9) by means of a comparison module of the evaluation module (9), from which the control signal is generated. Furthermore, at least one of the two signal connections (8, 11) is based on a wireless design.

Abstract: A measurement device (100 . . . 103) for measuring the thickness (d) of a plate-shaped object (7) is indicated, which comprises a first measurement sensor (21 . . . 23) for being set onto a first surface (9) of the plate-shaped object (7) and a second to fourth measurement sensor (31 . . . 53) for being set onto a second surface (10), opposite to the first surface (9) of the plate-shaped object (7). Furthermore, the measurement device (100 . . . 103) comprises means for calculating the thickness (d) of the plate-shaped object (7), using the positions (81 . . . 84) at which the measurement sensors (21 . . . 53) touch the plate-shaped object (7). Furthermore, a measurement method for measuring the thickness (d) of a plate-shaped object (7) is also indicated.

Abstract: A method for guiding and distributing high-energy radiation, in particular laser radiation, in the tool base body of a bending die, in particular a V-shaped die, includes a bending recess in the tool base body and a beam exit opening arranged therein for locally heating a workpiece bearing against a contact surface of the bending die by introducing high-energy radiation from a radiation source arranged outside the tool base body into the tool base body through a beam entry opening and high-energy radiation is discharged to the bending recess through the beam exit opening. At least one concentrated high-energy radiation beam is introduced into the tool base body through at least one beam entry opening and is at least partially deflected by at least one beam affecting arrangement in the tool base body, expanded and guided through the radiation exit opening onto the workpiece.

Abstract: The invention relates to a bending press (18) for carrying out a forming operation on a workpiece (1), comprising a first clamping beam (27), which has a first clamping jaw (2) with a first forming edge (5), and an adjustable second clamping beam (28), which has a second clamping jaw (3) with a second forming edge (6), and also at least one bending beam (7, 38), which is adjustable in relation to the machine frame (19) along a bending beam guide (33) and has at least one bending edge (8, 39), the path of movement (12) of which passes by the forming edges (5, 6) at a distance (10) and with which a portion (4) of the workpiece (1) can be angled away in relation to the part of the workpiece (1) that is clamped between the clamping jaws (2, 3).

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 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: Press table (3) or press beam (4) for a press brake (1), comprising a beam element (17) having an elongate support surface (18) for attaching a bending tool (19) or tool adapter, a support beam element (24) having approximately the same length (39) as the beam element (17), connecting elements (26) with which connecting points (25) on the beam element (17) are connected, with respect to the length (39) thereof, in particular symmetrically to the support beam element (24), at least one actuator (30) which acts between mutually facing pressure surfaces (28, 29) on the beam element (17) and on the support beam element (24) and which can exert an adjusting force (32) that runs approximately in the pressing direction (31) of the press brake (1) and as a result the support surface (18) of the beam element (17) is actively adjustable between a planar profile and a convex profile.

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).

Abstract: The invention relates to a bending tool (3) for inserting into a tool mount (2). The bending tool comprises a tool body (4), a locking element (8) which is connected to an activating element (7) accessible outside of the tool mount (2) and which has a locking tab (9) for securing the bending tool (3) in the tool mount (2) by engaging in a recess arranged therein, wherein a base position of the activating element (12) corresponds to a unlocking position of the locking element (16) and an actuating position of the activating element (13) corresponds to a locking position of the locking element (15). Furthermore, there is a tool position securing element (17) attached displaceably in the tool body (4), which tool position securing element, in a securing position (18) that protrudes with respect to the tool body (4), establishes a connection for fixing the position of the tool body (4) with respect to a displacement direction (5) in the tool mount (2).

Abstract: The invention relates to a production system (1) for free-form bending. It includes a bending press (3) with bending tools (4) which are interchangeably held in tool holders (19, 20), a manipulator (28) with gripping tongs (30) having gripping fingers (31, 32), and a recess (35, 36) disposed in the bending tool (4) with stop regions (49, 50) disposed at a distance apart from one another for manipulating the bending tool (4). Additional contact surfaces (40) are provided on ends (38, 39) of the gripping fingers (31, 32) on sides of the gripping fingers (31, 32) facing away from one another. The ends (38, 39) of the gripping fingers (31, 32) are inserted in the recess (35, 36) in order to hold the bending tool (4). The contact surfaces (40) are pressed against the stop regions (49, 50) in the direction opposite the clamping force for holding the workpiece (2) to be produced.

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 control and regulating device for a drive arrangement of a displaceable press beam of a bending press in particular a press brake, comprising a protective housing having an access orifice for a foot of an operator, and comprising a pedal-type actuating element disposed in the protective housing At least one detection means connected so as to communicate with a control and monitoring system of the bending press is assigned to the actuating element and is provided in the form of a motion profile detection means.

Abstract: The invention describes a bending press and a production device and describes a method of operating such a press, including a workpiece handling device and including a central control device and a workpiece positioning device with a first arresting device and with at least one further arresting device with arresting fingers which are adjustable in an X axial direction extending perpendicular to a bending plane for positioning a workpiece on a first bending tool for a bending operation between the first bending tool and a second bending tool that is adjustable relative thereto. The arresting device has a carriage module and a finger carrier with the arresting finger, and at least one drive means for the adjustment of the arresting finger is formed by a servomotor activated by means of a measuring and controlling circuit of the control device.

Abstract: A measurement device (100 . . . 103) for measuring the thickness (d) of a plate-shaped object (7) is indicated, which comprises a first measurement sensor (21 . . . 23) for being set onto a first surface (9) of the plate-shaped object (7) and a second to fourth measurement sensor (31 . . . 53) for being set onto a second surface (10), opposite to the first surface (9) of the plate-shaped object (7). Furthermore, the measurement device (100 . . . 103) comprises means for calculating the thickness (d) of the plate-shaped object (7), using the positions (81 . . . 84) at which the measurement sensors (21 . . . 53) touch the plate-shaped object (7). Furthermore, a measurement method for measuring the thickness (d) of a plate-shaped object (7) is also indicated.

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: 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: Press table (3) or press beam (4) for a press brake (1), comprising a beam element (17) having an elongate support surface (18) for attaching a bending tool (19) or tool adapter, a support beam element (24) having approximately the same length (39) as the beam element (17), connecting elements (26) with which connecting points (25) on the beam element (17) are connected, with respect to the length (39) thereof, in particular symmetrically to the support beam element (24), at least one actuator (30) which acts between mutually facing pressure surfaces (28, 29) on the beam element (17) and on the support beam element (24) and which can exert an adjusting force (32) that runs approximately in the pressing direction (31) of the press brake (1) and as a result the support surface (18) of the beam element (17) is actively adjustable between a planar profile and a convex profile.

Abstract: The invention relates to a method for bending a flat workpiece (2), comprising the discharge of high-energy radiation (19) in the form of at least one planar fanned beam (24) from a bending recess (12) of a die arrangement (3) having a bending die (7) onto a workpiece (2) bearing against a contact surface (11) of the bending die (7) for the local heating thereof before and/or during a bending process. The one or more planar fanned beams (24; 24a. 24b, . . . ) are produced by a number of optionally activatable radiation sources (22a, 22b, . . . ) which are arranged within the die arrangement (3) along the bending recess (12) or are caused by the distribution of a concentrated radiation beam (40) that is introduced from a radiation source (39) outside the bending dies (7a, 7b, . . . ) via a number of beam affecting arrangements (23a, 23b, . . . ) within the bending dies (7a, 7b, . . .

Abstract: The invention relates to a bending die (3), particularly a V-shaped die (13), comprising a tool base body (7) with a contact surface (10) for contacting the workpiece (2) to be bent by a bending punch (5), a groove-shaped bending recess (11) in the contact surface (10) and at least one beam exit opening (17) in the bending recess (11) and extending along thereof, which is configured to discharge high-energy radiation (18) onto a workpiece (2) bearing against the contact surface (10) in order to heat the deformation zone of the workpiece (2). An arrangement of diode laser bars (20) is fixed in the interior of the tool base body (7) for producing the radiation (18). Said diode laser bars (20) are arranged at least approximately uniformly along the longitudinal direction (27) of the bending recess (11) behind the beam exit opening (17) in the tool base body (7).