Abrégé

There is provided a press brake that improves bending accuracy of a partial bending method. The press brake includes: a conveying mechanism that intermittently conveys a workpiece; a die; a punch; a crowning mechanism; a bending amount measuring device; and a control device. The control device presses an end portion of the workpiece in a conveying direction by the punch and conveys the workpiece by the conveying mechanism until the pressed portion enters into a measurement range of the bending amount measuring device. The control device drives the crowning mechanism so as to correct a crowning amount in accordance with a difference between a middle bending amount and an end bending amount measured by the bending amount measuring device.

Classes IPC  ?

• B21D 5/02 - Cintrage des tôles le long de lignes droites, p. ex. pour former un pli simple sur des presses particulières sans fixation de la pièce
• B30B 15/02 - MatricesGarnitures ou montures appropriéesMoules
• B30B 15/14 - Commande des presses actionnées mécaniquement
• B30B 15/26 - Commande programmée

Abrégé

a) relative to the punch supporting member (4) in the relative movement direction.

Classes IPC  ?

• B21D 37/02 - Structures de matrices permettant l'assemblage des parties de la matrice de différentes façons
• B21D 5/02 - Cintrage des tôles le long de lignes droites, p. ex. pour former un pli simple sur des presses particulières sans fixation de la pièce

Abrégé

There is provided a press brake that can improve forming accuracy in partial bending. A press brake includes: a conveying mechanism that intermittently conveys a workpiece; a die including a pair of shoulder portions and a groove portion located between the pair of shoulder portions, the pair of shoulder portions being arranged away from each other in a conveying direction of the workpiece and supporting a rear surface of the workpiece; a backup plate that extends on the pair of shoulder portions, covers the groove portion, and is interposed between the die and the workpiece; and a punch that moves relative to the die so as to approach the die each time the conveying mechanism stops conveying the workpiece and presses the workpiece so as to bend the workpiece within an elastic deformation region of the backup plate.

Classes IPC  ?

• B21D 5/02 - Cintrage des tôles le long de lignes droites, p. ex. pour former un pli simple sur des presses particulières sans fixation de la pièce

Abrégé

Provided is a press brake (1) that can efficiently put a uniform curve into a workpiece (90) that has a non-uniform plate thickness when the workpiece (90) is bent. The press brake (1) comprises a die (2) that supports the workpiece (90), a punch support member (4) that is arranged opposite the die (2), a movement mechanism (5) that moves the punch support member (4) relative to the die (2), a punch (3) that is supported by the punch support member (4), is opposite the die (2) and the workpiece (90) in the relative movement direction of the punch support member (4), and comprises a plurality of punch elements (3a) that are arrayed in one direction that is orthogonal to the relative movement direction, and a plurality of punch element adjustment mechanisms that are provided to correspond to the plurality of punch elements (3a) and respectively adjust the positions of the punch elements (3a) relative to the punch support member (4) in the relative movement direction.

Classes IPC  ?

• B21D 5/02 - Cintrage des tôles le long de lignes droites, p. ex. pour former un pli simple sur des presses particulières sans fixation de la pièce
• B21D 37/02 - Structures de matrices permettant l'assemblage des parties de la matrice de différentes façons

Abrégé

Provided is a press brake that improves bending precision when using the partial bending method. The press brake comprises: a transport mechanism that intermittently transports workpieces; a die; a punch; a crowning mechanism; a bending amount measurement instrument; and a control device. The control device uses the punch and presses an end section, in the transport direction, of the workpiece, transports the end, using the transport mechanism, until the end enters a measurement range determined by the bending amount measurement instrument, and drives the crowning mechanism to correct the crowning amount in accordance with the difference between a central bending amount and an end bending amount as measured by the bending amount measurement instrument.

Classes IPC  ?

• B21D 5/02 - Cintrage des tôles le long de lignes droites, p. ex. pour former un pli simple sur des presses particulières sans fixation de la pièce
• G01B 11/24 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer des contours ou des courbes

Abrégé

Provided is a press brake with which it is possible to improve shaping accuracy during partial bending. This press brake is provided with: a conveying mechanism for intermittently conveying a workpiece; a die including a pair of shoulder portions which are disposed separated from one another in the workpiece conveying direction and which support a rear surface of the workpiece, and a groove portion formed between the pair of shoulder portions; a backup plate which spans above the pair of shoulder portions and covers the groove portion, and which is interposed between the die and the workpiece; and a punch which moves relative to the die in such a way as to approach the die each time the conveying mechanism stops conveying, and which presses the workpiece in such a way as to bend the workpiece within an elastic deformation region of the backup plate.

Classes IPC  ?

• B21D 5/02 - Cintrage des tôles le long de lignes droites, p. ex. pour former un pli simple sur des presses particulières sans fixation de la pièce

Abrégé

This press brake is provided with: a die (11) and a punch (12) which face one another; and a punch driving mechanism (15) which moves at least one of the die (11) and the punch (12) relative to one another, with a workpiece (40) disposed between the die (11) and the punch (12), such that the die (11) and the punch (12) approach one another. The punch (12) is formed by arranging a plurality of punch elements (20), which face the die (11), in one row. Each punch element (20) is provided with a position adjustment mechanism (21) for adjusting an advancement position of the punch element (20) toward the die (11) side. When the workpiece (40) is to be bent, the advancement position of each punch element (20) is gradually changed from one end portion of the plurality of punch elements (20) arranged in one row toward the other end thereof, such that the shape formed by the distal ends of the plurality of punch elements (20) is a parabola.

Classes IPC  ?

• B21D 1/06 - Élimination des distorsions locales
• B21D 5/02 - Cintrage des tôles le long de lignes droites, p. ex. pour former un pli simple sur des presses particulières sans fixation de la pièce
• B21D 37/02 - Structures de matrices permettant l'assemblage des parties de la matrice de différentes façons

Abrégé

Provided is a press brake with which an improvement in bending accuracy can be achieved. A press brake 1 is provided with a conveying mechanism 2 for intermittently conveying a workpiece 90, a die 3, a punch 4 including a plurality of punch elements 4a, a bending amount measuring instrument 8, a punch element adjusting mechanism 10, and a control device 9, wherein the control device 9 corrects the punch shape in accordance with the bending amount measured by the bending amount measuring instrument, and the plate thickness at the position at which the bending amount was measured, by adjusting the position of the punch element corresponding to the measuring position with reference to a database.

Classes IPC  ?

• B21D 5/02 - Cintrage des tôles le long de lignes droites, p. ex. pour former un pli simple sur des presses particulières sans fixation de la pièce
• B21D 37/02 - Structures de matrices permettant l'assemblage des parties de la matrice de différentes façons
• G01B 11/24 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer des contours ou des courbes

Produits et services

Software for sheet metal treatment machines.

Produits et services

Machines, namely press brakes; machines for automated sheet processing; machines for automated bending, welding, grinding, loading and unloading, sorting and handling of metal sheets; industrial robots for use in manufacture; industrial robots; robot metal working presses; robotic apparatus for handling materials; parts of the aforesaid goods.

Produits et services

(1) Machines, namely press brakes, machines for automated sheet processing, machines for automated bending, welding, grinding, loading and unloading, sorting and handling of metal sheets, industrial robots for use in manufacture, industrial robots, robot metal working presses, robotic apparatus for handling materials, namely, robotic arms for handling metal sheets, parts of the aforesaid goods

Produits et services

machines for automated metal sheet processing; machines for automated bending, electric welding, grinding, loading and unloading, sorting and handling of metal sheets; industrial robotic metal working presses and industrial robots for handling materials

Produits et services

Press brakes; Machines for automated sheet processing; Machines for automated bending, welding, grinding, loading and unloading, sorting and handling of metal sheets; Industrial robots for use in manufacture; Industrial robots; Robot metal working presses; Robotic apparatus for handling materials; Parts of the aforesaid goods.

Produits et services

Laser cutting machines. Sensors for use with machine tools; industrial controls incorporating software; computer hardware; measuring and control apparatus and instruments.

Produits et services

(1) Machines, namely hydraulic, mechanical and pneumatic presses for all industries; machines for working metals by bending and forming, by cutting or by chip removal; press brakes and parts thereof; press brakes equipped with measuring and control system for bending steel sheets. (2) Machines, namely hydraulic, mechanical and pneumatic presses for all industries; machines for working metals by bending and forming, by cutting or by chip removal

Produits et services

Machines for metal fabrication, namely, machines for working metals by cutting, profiling, punching, bending and forming, including hydraulic, electronic and pneumatic presses for all industries, sheet metal working machines; machines for sheet metal and plate metal working, profiling, punching, bending and forming, namely, computer numerically controlled CNC turret punch presses, cutting machines, press brakes, guillotine shears, cutting machines and computer aided machining CAM programming software sold in conjunction therewith

Produits et services

Press brakes and parts thereof included in this class; press brakes equipped with measuring and control system for bending steel sheets. Measuring and checking apparatus and instruments.