Abstract: The device comprises a base (12), a mobile support (14), a contact member (16), a lever (34) which comprises a blocking arm (38) pivotally mounted around an axis (36). The device comprises retention means (40, 42) capable of opposing the pivoting of the lever. The device also comprises a reaction member (48A) fixed with respect to the base (12) and capable of cooperating with a reaction zone of the blocking arm (38) by defining a reaction surface inclined with respect to the translation direction X of the support on the base. The pivoting of the lever allowed by the release of the retention means allows the displacement of the contact member.

Abstract: The present invention relates to a bending press comprising an upper table (130) and a lower table (132) placed edge-to-edge in the vertical direction, with one of the tables being movable relative to the other in the vertical direction, and with one of the tables presenting slots (134, 136) that are placed symmetrically relative to the midplane (P?P). Each slot has an open outside end and comprises a first slot portion (135a, 137a) and a second slot portion (135b, 137b) that is situated on the inside relative to the first slot portion and that is connected thereto, the shapes of said slot portions being such that the stiffness of the table portion situated between the slot and the tool fastener is greater between the first slot portion and the tool fastener than between the second slot portion and the tool fastener. At least one element (180) for adjusting the flexing of said table is disposed in the first slot portion.

Abstract: The present invention relates to a press brake for bending metal sheets, said press brake having an upper and a lower table, one of which has two slots, and having at least one pair of wedges, each wedge being disposed in a respective one of the two slots; and a primary control lever that is common to the wedges of the pair of wedges and that is suitable for moving said wedges of the pair of wedges in their respective slots.

Abstract: The present invention relates to a press brake for bending metal sheets wherein: at least one stopper is disposed in each slot, each stopper comprising a first wedge having a first end secured to the first slot edge and a second end forming a first surface, and a second wedge having a first end secured to the second slot edge and a second end forming a first surface; and the first surface of at least one of the first and second wedges has a central portion that is domed or protuberant relative to the other portions of said surface so that the contact between the first and the second wedges is established essentially over said central portion.

Abstract: The present invention relates to a bending press or “press brake” for bending metal sheets, wherein the press includes at least one linking rod, which rod is oriented substantially perpendicularly to the movement direction, having one end that is fastened to the deformable portion of the second table and having its other end fastened to the housing.

Abstract: The invention relates to a connection device between a moving member and the moving end of a drive device. It comprises: a mechanical connection element in contact with said moving member; and a thermal insulator element interposed between said mechanical connection element and said end of the drive device, whereby the heat produced by said drive device is substantially not transmitted to said moving member. The invention is applicable to making press brakes.

Abstract: The invention relates to a bending press comprising a bottom panel, a moving top panel, N bending-tool clamps, each clamp being mounted to pivot about a common axis, and means for causing the clamps to pivot. The means for causing the clamps to pivot comprise: a plurality of actuators each suitable for taking up two states; a plurality of transmission means for transmitting the state of each actuator assembly to a plurality of adjacent clamps, in such a manner each clamp is associated with a single actuator; and means for separately controlling the state of each actuator between a first state which brings the clamps associated with the actuator into a position for clamping the bending tool, and a second state which brings the clamps associated with the actuator into a position for removing said bending tools.

Abstract: A fixing system for mounting and dismounting a bending tool relative to the top panel of a bending press, in which the bending tool is held clamped between a first clamping surface of a tool spacer and a pivotally-mounted clamp including a second clamping surface. The system further comprises a tool-retaining member comprising a plurality of blades, each blade comprising a first elastically-deformable branch secured in part to the clamp, at least one angled portion, and a second elastically-deformable branch pointing upwards, with the end thereof being suitable for penetrating into a retaining groove situated in the bending tool, and being suitable for co-operating with the bottom edge of the groove when the tool pivots.

Abstract: A numerical control device for a bending machine includes a keyboard, a memory and a processor. The memory stores one or more groups of data, each containing bending conditions, a bend angle and at least one penetration depth. The memory further stores program instructions for searching whether data input with the keyboard is stored in the memory, in a same group of data, and that sends a signal to the bending machine so that the bending machine peforms bending according to the penetration depth included in the group of data. The processor that executes said program instructions.

Abstract: A support medium is capable of being read by a numerical control system of a bending machine. The support medium stores program instructions for searching, in a memory region storing at least one group of data, each containing bending conditions, a bend angle and at least one penetration depth, whether input data including a desired bend angle and bending conditions are stored in the memory region, in a same group of data. The support medium sends a signal to the bending machine so that the bending machine executes a bending according to the penetration depth included in the same group of data.

Abstract: A sheet metal follower for a bending press that has a bottom fixed table carrying a bending matrix on its top face. The follower is of the type comprising in particular pivot means for pivoting the follower table about a pivot shaft, and means suitable for moving the follower table in horizontal displacement relative to its support structure and perpendicularly to the pivot shaft, the active length of the pivot means being variable between a fixed hinge on the support structure and a moving hinge on the follower table, and the moving hinge being suitable for sliding along said table in a direction perpendicular to the pivot shaft of said table.

Abstract: The present invention relates to a device for adjusting the height of a plurality of tool carriers connected to a top panel of a bending press, each tool carrier having a tool spacer, the adjustment device comprising, for each tool carrier, an adjustment wedge interposed between the square of the top panel and the top face of the tool spacer associated with said wedge. According to the invention, the ends of each wedge include engagement mechanism to enable a wedge associated with a tool spacer firstly to overlap at least part of the top face of an adjacent tool spacer, and secondly to engage reversibly with the wedge associated with said adjacent tool spacer so that the two adjacent tool spacers touch each other, and the square of the top panel is designed to bear against the engagement mechanism.

Abstract: A sheet metal follower associated with a press for bending a metal sheet, the follower being of the type comprising a pivot mechanism capable of causing the follower table to tilt, wherein a toothed wheel that is prevented from rotating is connected to a second toothed wheel by a cog belt, wherein the second toothed wheel pivots inside the cog belt, thereby causing the follower table to pivot about the rotary shaft, and wherein the upward and downward movements of the follower table are synchronized with its pivoting movement so that the plane in which the top support face of said table lies always includes the front edge of the matrix of the bending press.

Abstract: A support medium is capable of being read by a numerical control system of a bending machine. The support medium stores program instructions for searching, in a memory region storing at least one group of data, each containing bending conditions, a bend angle and at least one penetration depth, whether input data including a desired bend angle and bending conditions are stored in the memory region, in a same group of data. The support medium sends a signal to the bending machine so that the bending machine executes a bending according to the penetration depth included in the same group of data.

Abstract: A numerical control device for a bending machine includes a keyboard, a memory and a processor. The memory stores one or more groups of data, each containing bending conditions, a bend angle and at least one penetration depth. The memory further stores program instructions for searching whether data input with the keyboard is stored in the memory, in a same group of data, and that sends a signal to the bending machine so that the bending machine peforms bending according to the penetration depth included in the group of data. The processor that executes said program instructions.

Abstract: The numeral control device for a bending machine comprises means for inputting, as input data, a desired bend angle and bending conditions or criteria, means for storing groups of data, each containing bending conditions, a bend angle and a penetration depth, and means for searching whether the input data is stored in the memory means, in the same group of data. Moreover, means are provided for transmitting a signal representative of a penetration depth included in the group of data stored in the memory means, or for transmitting a signal for controlling the bending machine according to this penetration depth.

Abstract: A sheet metal follower for a bending press that has a bottom fixed table carrying a bending matrix on its top face. The follower is of the type comprising in particular pivot means for pivoting the follower table about a pivot shaft, and means suitable for moving the follower table in horizontal displacement relative to its support structure and perpendicularly to the pivot shaft, the active length of the pivot means being variable between a fixed hinge on the support structure and a moving hinge on the follower table, and the moving hinge being suitable for sliding along said table in a direction perpendicular to the pivot shaft of said table.

Abstract: A bending press for bending metal sheets, the press comprising a moving top panel and a fixed bottom panel, the bottom panel being constituted by a plate having a top portion and a fixed bottom portion defined by two notches that are symmetrically identical about the transverse midplane of the bottom panel, each notch having a top wall and a bottom wall interconnected by a back wall, and also having an opening situated in the corresponding side edge of the plate, the press being characterized in that each notch is fitted with a displacement member interconnecting the free top portion and the fixed bottom portion of the bottom panel so as to cause the top wall of the notch to move towards the bottom wall thereof, thereby modifying the deformation curve of the free top portion of the bottom panel in controlled manner.

Abstract: This invention relates to a bending press for bending metal foils, comprising a mobile panel and a fixed panel. The fixed panel comprises two slots open on the lateral faces of the lower panel and symmetrical with respect to the transverse median plane of this fixed panel. The bottom of each slot is formed by the inner wall of a through bore made in the lower panel which extends over an angle close to 360°, in order to distribute the stresses due to the bending over a broader area. A safety stop is provided in the opening of each slot in order to limit the vertical displacement of the ends of the upper part of the lower panel.