The invention relates to a bending tool storage device (1) for storing bending tools (2), comprising: a preferably shelf-type rack (3) on which a plurality of storage locations (4) for bending tools (2) are arranged, at least one supply path (10), preferably in the form of a tool guide (11), for issuing and/or retrieving bending tools (2), and at least one first transfer device (5) for transferring bending tools (2) between the storage locations (4) and a transfer point (6), characterized in that the bending tool storage device (1) comprises, between the transfer point (6) and the supply path (10), a rotating installation (7) for rotating the bending tools (2).

A tool unit 20 and a press 21, particularly an embossing press. The tool unit 20 is simply and quickly arranged in or removed from a holder 23 of the press 21 in order to carry out a quick tool change with short downtime of press 21. For this purpose the tool unit 20 comprises a first tool 45 and a second tool 46 that are arranged along a tool axis A on a tool carrier 31. By means of a tool guide device 47, the second tool 46 is movably supported in a guided manner relative to the tool carrier 31 and the first tool 45, independent from guide devices of press 21. Therefore, the tool unit 20 can be prepared and set up during the ongoing operation of press 21. If desired or necessary, the prepared tool unit 20 is exchanged against the presently used tool unit 20.

A roller leveler and related method for leveling stock which includes an upper roller frame with an upper leveling unit, and a lower roller frame which has a machine bed with a lower leveling unit. The upper roller frame can be moved upward and downward relative to the lower roller frame by hydraulic drives. The upper leveling unit includes a plurality of upper leveling rollers and the lower leveling unit has a plurality of lower leveling rollers. The upper leveling rollers are supported with upper bearing plates and the lower leveling rollers are supported with lower bearing plates. At least several of the upper and lower leveling rollers are connected at one end to drive shafts of a drive device. A frame is moveable into and out of the roller leveler.

An automatic processing system includes a base or platform, on which a loading station is mounted, adapted to house one or more trolleys having workpieces to be processed, a magazine adapted to pick up at least one work piece at a time from the loading station and to transport it to a centering device adapted to receive the workpiece and to place it in pick-up position by a robot, and a unloading station where the processed pieces are positioned.

A die of a stamping press is described and includes: an upper portion including one or more first features; a lower portion including one or more second features that are complementary to the first features and apertures at locations, respectively, that extend through the lower portion; and optical sensors that are disposed within the apertures, respectively, of the lower portion and that are configured to measure directions of movement and distances of movement inward of outer edges of a substrate at the locations, respectively, during stamping of the substrate.

A die of a stamping press is described and includes: an upper portion including one or more first features; a lower portion including one or more second features that are complementary to the first features and apertures at locations, respectively, that extend through the lower portion; and optical sensors that are disposed within the apertures, respectively, of the lower portion and that are configured to measure directions of movement and distances of movement inward of outer edges of a substrate at the locations, respectively, during stamping of the substrate.

A metal sheet punching device includes: a die including a circular opening; and a punch configured to form a circular punched hole in the metal sheet supported by the die. The punch includes: a main body part; a cylindrical punching part; a rotating part disposed between the main body part and the punching part; a coated abrasive provided on an outer circumferential surface of the rotating part and configured to polish a sheared edge of the punched hole; a spring disposed between the main body part and the punching part and configured to contract and accumulate a part of a punching load as elastic energy, release the elastic energy and extend after the punching part punches the metal sheet; and a rotational motion conversion device configured to convert a linear motion in the punching direction due to extension of the spring into a rotary motion of the rotating part.

A metal sheet punching device includes: a die including a circular opening; and a punch configured to form a circular punched hole in the metal sheet supported by the die. The punch includes: a main body part; a cylindrical punching part; a rotating part disposed between the main body part and the punching part; a coated abrasive provided on an outer circumferential surface of the rotating part and configured to polish a sheared edge of the punched hole; a spring disposed between the main body part and the punching part and configured to contract and accumulate a part of a punching load as elastic energy, release the elastic energy and extend after the punching part punches the metal sheet; and a rotational motion conversion device configured to convert a linear motion in the punching direction due to extension of the spring into a rotary motion of the rotating part.

A tool for a press brake includes a tool main body, an attachment portion formed on a base end side of the tool main body and configured to be detachably attached to a tool installation portion of the press brake by using a tool changer, and a bending portion formed on a distal end side of the tool main body and used to bend a plate-shaped workpiece. An engagement hole having a circular cross-sectional shape to be engaged with a bar-shaped finger of the tool changer extends through the tool main body in a thickness direction. An anti-rotation bottomed depressed portion configured to receive a distal end of an anti-rotation member of the tool changer is formed in a vicinity of the engagement hole.

The invention relates to a device for changing bending tools (15, 16) in a bending machine (2) for bending metal sheets, in particular in a press brake, comprising at least one tool magazine (6) for storing the bending tools (15, 16), which, when positioned in a working area of the bending machine (2), cause the metal sheets to bend. The at least one tool magazine (6) is arranged on a frame (3) which is configured to be positioned in a free-standing manner without a mechanical connection to the bending machine (2) in an operating position of the device (1), wherein the at least one tool magazine (6) can be moved from a first position out of the frame (3) into a second position, in which at least a part of the tool magazine (6) that can be moved out lies in a contact-free manner within the bending machine (2).