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).

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).

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, . . .