A metal sheet with attachment points for attaching the metal sheet to a support structure has a contour cut introduced in a sheet surface of the metal sheet, wherein the contour cut extends transversely to a connection line extending between a first and a second one of the attachment points. The contour cut is positioned relative to the first attachment point such that a vibration line extending as far as the first attachment point when the contour cut is not present is interrupted by the contour cut.

The invention relates to a bending tool (1) comprising a tool body (2) having an upper (3) and an opposite lower end region (4), wherein an attachment extension (5) is configured in the upper end region (3), and a working tip (6) is configured in the lower end region (4). A tool identification marker (11) is disposed in the tool body (2), and a communication interface (9) is disposed in the attachment extension (5) on at least one side surface (8) and not projecting beyond it, which interface is connected with the tool identification marker (11) by way of a connection line (10). An electronics unit (12) is disposed in the tool body (2). A voltage supply contact (14) that is electrically insulated relative to the tool body (2) is is disposed on the attachment extension (5), which contact is connected with a voltage supply module (15) of the electronics unit (12). Furthermore, a change-over switch (16) is disposed in the connection line (10), wherein in a first switching position, the tool identification marker (11) is connected with the communication interface (9), and in a second switching position of the change-over switch (16), the electronics unit (12) is connected with the communication interface (9).

A method for producing a press-formed product that includes a pair of flat sections and a bend section that connects the flat sections, in which a bending radius of the bend section is R.sub.2 and an interior angle formed by the pair of flat sections is .sub.2, includes the steps bellow. In the first forming step, an intermediate formed product including a bend section in which a bending radius is R.sub.1 and an interior angle is .sub.1 is formed. In the second forming step, a portion of a bend section of the intermediate formed product is formed into the bend section of the press-formed product. R.sub.1, .sub.1, R.sub.2 and .sub.2 satisfy the conditions of Formulae (1) to (3) below:
1.05<A.sub.1/A.sub.2(1);
1.0<R.sub.1/R.sub.2(2);
A.sub.1/A.sub.2<6.0/(R.sub.1/R.sub.2)(3), where, A.sub.1, A.sub.2 represents the supplementary angle of the interior angle .sub.1, .sub.2, respectively.

A punch assembly with interchangeable tips includes a punch body and a punch tip releasably coupled to the punch body. The punch body includes a proximal end, a distal end opposite the proximal end, and a cross-sectional shape defined between the proximal end and the distal end. The proximal end includes a flange configured to engage a punch holder. The distal end includes a distal surface defining a lateral direction. The punch tip is coupled to the distal end of the punch body via a magnetic coupling provided by a plurality of magnets. The punch tip includes a working surface and a coupling member. The distal end of the punch body engages the coupling member of the punch tip in a tongue-in-groove arrangement wherein the plurality of magnets are provided within a tongue and cupped within a groove.

A pneumatic plug gauge has been developed in the context of the invention. This plug gauge comprises a first measuring channel which can be connected to a pressure medium source and opens into a first outlet for the pressure medium, which outlet can be directed to a surface of the workpiece to be tested. According to the invention, this plug gauge is designed to determine the tilt angle between a section on the surface thereof and a region opposite this section on the surface of the workpiece by virtue of the first outlet being arranged at one end of the section and at least one second outlet being provided, which second outlet is arranged at the other end of the section. It has been recognized that the admittedly high precision of pneumatic length measurements can be converted in a particularly advantageous manner to high precision of the angle measurement in this manner. The tilt angle can be measured at least with an accuracy of less than one tenth of a degree. At the same time, the measurement is fast enough for 100% control in mass production. The plug gauge is the central element in the measuring system and in the method, to which the invention likewise relates.

A metal sheet with attachment points for attaching the metal sheet to a support structure has a contour cut introduced in a sheet surface of the metal sheet, wherein the contour cut extends transversely to a connection line extending between a first and a second one of the attachment points. The contour cut is positioned relative to the first attachment point such that a vibration line extending as far as the first attachment point when the contour cut is not present is interrupted by the contour cut.

This invention relates to a tool for press brake. More specifically, the invention relates to a modular and adjustable female die tool mountable to a stationary bed part of a press brake machine or similar. The modular die tool unit (10) includes a drive shaft (18) rotatable about a central longitudinal axis, a pair of first and second die jaws (14, 16) each located on opposite sides of the longitudinal axis and reciprocally movable towards and away from on another relative to such longitudinal axis, and a connecting formation at each of the longitudinal ends of the drive shaft (18) for: (i) coaxially connecting the drive shafts (18) of two or more adjacent modular die tool units (10) end-to-end; and/or (ii) connecting a drive means to the drive shaft (18) of one of the modular die tool units (10) thereby to drive such drive shaft (18) and the other drive shafts (18) connected thereto.

A workpiece supply device for supplying a plate-shaped workpiece to a press brake, including: a slider movable along a Y-axis-direction guide member that is provided on a base frame movable in X-, Y-, and Z-axis directions relative to a press brake, the slider being capable of being positioned at an end of the guide member; and a workpiece holder provided on the slider and capable of holding a workpiece, wherein a part of the workpiece holder is capable of protruding from the end of the guide member.

A mold for a press brake includes an upper mold that is mountable on an upper table and a lower mold mountable on a lower table in a press brake. The upper mold and the lower mold vertically face each other and have respective pressurizing surfaces. The respective pressurizing surfaces are superposed with each other in a pressing direction so as to define a wedge shaped recess between the respective pressurizing surfaces. The respective pressurizing surfaces are configured to pressurize a workpiece positioned between the respective pressurizing surfaces. Further, one of the pressurizing surfaces is formed as a level surface and the other is formed as an inclined surface. The upper mold includes a V-shaped workpiece bending portion that can freely enter into a bending groove provided in the lower mold, and the respective pressurizing surfaces are positioned outside of the bending groove of the lower mold.

A system for forming a metal strip into a die having a predetermined shape through a series of forming operations is described herein. The system includes a base configured to support the metal strip as the metal strip undergoes the series of forming operations; a feeding device configured to advance the metal strip between each forming operation of the series of forming operations and grip the metal strip during each forming operation; a bending device configured to bend a portion of the metal strip extending from the feeding device as one of the series of forming operations; a forming head configured to house a pair of forming tools and provide features to the portion of the metal strip extending from the feeding device as one of the series of forming operations using the one or more forming tools; a robotic arm configured to selectively provide the one or more forming tools to the forming head; and a computing unit in communication with the robotic arm and configured to transmit a control signal to cause the robotic arm to retrieve the pair of forming tools and provide the pair of forming tools to the forming head.