A press brake includes elevating members each provided to respective one of a pair of support blocks so as to be able to ascend and descend, and extending vertically. A ball screw is provided to a first elevating member so as to be rotatable, and a nut member to be screwed into the ball screw is provided to a first support block. One end side of a stretch in the lateral direction is connected to an upper end portion of the first elevating, and the other end side of the stretch in the lateral direction is connected, so as to be rotationally movable, to an upper end portion of a second elevating member. A support mechanism for supporting the stretch from below is provided to the first elevating member, and an abutting member is provided to the stretch.

A bending machine with a work area image capture apparatus has a machine frame, a longitudinally extended, fixed machine table, and a longitudinally extended press beam moved by a drive relative to the frame and guided therein. The longitudinal expanse and the press beam movement direction define a working plane establishing a front working and manipulation space and a rear machine space. An image capture apparatus above the machine table in the machine space has a capture region oriented toward the machine space and is connected with a display configured to represent the captured image of the capture region. The capture apparatus is connected with the display by an image processing processor having a coordinate transformation module configured the captured image perspective. The coordinate transformation module is connected with a wireless position determination system configured to determine the machine operator position in the working and manipulation space.

A bending machine with a bending information display apparatus has a machine frame, a longitudinally extended, fixed machine table, and a longitudinally extended press beam. The longitudinal expanse and the press beam movement direction define a working plane. An insertion plane essentially normal to the working plane is defined by an upper machine table flat side or a lower tool disposed thereon. The working plane establishes a front working and manipulation space and a closed rear machine space. A projector disposed above the insertion plane in the rear machine space has a light beam path directed away from the insertion plane. A reflector disposed in the working and manipulation space has a first reflective surface pivotable by an angle to the horizontal so that a light beam incident from the projector beam path leaves the first reflective surface as a departing light beam toward the insertion plane.

An apparatus for the support and the controlled advancement of a sheet in a bending machine for forming a cylindrical or conical structure, in particular of a truncated cone structure, comprises a base structural frame adapted to be positioned upstream of said bending machine, with respect to an advancement direction of the sheet, a plurality of conveying modules which can be mounted, removable, on the structural frame so as to generate a plan of modular support and advancement which can be configured geometrically according to the shape and dimensions of the sheet to be produced; the modular support and advancement plane is geometrically configured to keep the sheet metal part supported by the plane in a flat condition; an lifting and tilting device configured to vary the position of the structural frame, supporting the conveying modules, from a horizontal lying position to an inclined lying position in which the support and advancement plane is inclined downwards towards the bending machine; repositioning and position correcting members configured to orient and arrange the sheet in a correct position before starting a bending cycle and configured to correct, during the bending cycle, the position of the sheet to impose it a predetermined advancement trajectory towards and through the bending machine. The relative method is also envisaged.

A machine integrated positioning system shows an operator where to place a raw part in the press brake or other machinery. Further, the operator is informed if the dimensions associated with the raw part are, or are not, correct to produce the planned finished part. The operator is visually shown how the raw part is to be oriented. The operator is informed if the raw part is right-side-up, along with other pre-final placement information. If these and other conditions are not met, the machine integrated positioning system may prevent the press brake and other machinery from cycling.

A back gauge for a back gauge positioning system of a bending machine includes a stop finger on which at least one stop surface is configured, and a base unit that is configured for coupling with the back gauge positioning system. The stop finger is coupled with the base unit by a linear guide, and the stop finger can be displaced relative to the base unit between a pushed-forward working position and a retracted position. The stop finger and the base unit are coupled with a first spring element, by which the stop finger is pre-loaded into its working position, and a locking device is configured, by which the stop finger can optionally be locked in the working position or is released into its retracted position for displacement counter to the spring force of the first spring element.

The invention relates to a workpiece processing machine (1), and to a method for operation of a workpiece processing machine (1). The workpiece processing machine (1) comprises an automatically adjustable stop finger (17), and has, for monitoring adjustment movements of the stop finger (17), a monitoring device (36, 37, 38) that comprises an illuminating device (36) and at least one optical detection device (37). In operation of the workpiece processing machine (1), during an automatically controlled adjustment movement of the stop finger (17), a light beam (38) is radiated into an area ahead of the stop finger (17) in the adjustment direction. Upon detection of a first light image (43) projected onto an object surface (42) by the first light beam (38), a safety measure is triggered.

A received beam amount acquisition section 60 acquires a received beam amount per unit time of a beam receiver 52 at certain sampling time intervals. A beam shielding detection section 66 detects presence or absence of beam shielding of a monitoring beam B by determining whether or not the acquired received beam amount per unit time of the beam receiver is lower than a determination threshold Th for detecting the presence of beam shielding of the monitoring beam B. A detection sensitivity of the beam shielding detection section 66 is configured to be switched from a normal sensitivity mode to a high sensitivity mode when bending is initial processing based on a predetermined processing program, and an acquired height position of the beam receiver 52 is lower than a predetermined second height position LP2.

A bending machine has a work area image capture apparatus. A longitudinal expanse and the movement direction of the press beam define a working plane, which establishes a front working and manipulation space and a rear machine space, which is distinguished from the former and, in particular, closed off. An image capture apparatus is disposed in the working and manipulation space above the machine table, in a center section of the longitudinal expanse of the press beam, which apparatus is connected with a display, which is configured for representation of the captured image of the capture region. The image capture apparatus is disposed in a press beam casing, and has two image capture devices, wherein each image capture device captures a partial section in the direction of the machine table.

A method or apparatus to produce an L-shaped pressed component includes, where a portion of a blank, having tensile strength of 1180 MPa or more, is held in a state of being clamped by a blank holder and a die, and a portion of the blank, to be formed into a top plate is held in a state of being clamped by a pad and a punch; the second step where a vertical wall, a concave ridge and a flange on the inner side of a curved portion are formed by, bend forming with a bending die, forming one, two or more material inflow promoting portion; and the third step where the die is moved in a direction toward a side where the blank holder is disposed to form a vertical wall, a concave ridge, and a flange on the outer side of the curved portion by draw forming.