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    • 7. 发明申请
    • METHOD FOR OPERATING A BENDING PRESS
    • US20210268565A1
    • 2021-09-02
    • US17255058
    • 2019-07-30
    • TRUMPF Maschinen Austria GmbH & Co. KG.
    • Thomas DENKMEIERDavid HAIMPeter SIMMEL
    • B21D5/02B21D55/00F16P3/14
    • The invention relates to a method for operating a bending press (10), wherein the bending press (10) comprises a first platform (1) with a first tool mount (11) and a second platform (2) with a second tool mount (12), wherein one of the platforms (1) is movable relative to the other platform (2) for performing a working movement, a safety device (20) for creating a light barrier (27), in particular laser light barrier, extending between the tool mounts (11, 12) transversely to the working movement of the movable platform (1), which light barrier (27), in a cross-section, forms a light field (7), wherein the safety device (20) has a first mount (21), which carries a light emitter (25) for creating the light barrier (27), and a second mount (22), which carries a light receiver (26) for receiving the light of the light barrier (27), and wherein the first mount (21) is arranged on a first side of the first platform (1) and is adjustable relative to the first platform (1) by a first adjustment drive (23), such that the position of the light barrier (27) relative to the first tool mount (11) can be changed in the direction of the working movement of the movable platform (1), a controller (9) that is connected to the first adjustment drive (23), characterized in that before a bending operation or a series of bending operations, the controller (9) brings the first mount (21) into a working position by controlling the first adjustment drive (23), in which working position the tool tip (4) of a bending tool (8) held by the first tool mount (11) lies within the light field (7) formed by the light barrier (27).
    • 10. 发明授权
    • Bending angle measuring method
    • US10436579B2
    • 2019-10-08
    • US15519187
    • 2015-10-16
    • TRUMPF Maschinen Austria GmbH & Co. KG
    • Sebastian LeebStefan Lustig
    • G01B11/26B21D5/00B21D5/02
    • The invention relates to a bending angle measuring method for a bending machine (1), in particular a bending press or brake press, and the bending machine (1) has a bending tool arrangement (2) with at least one upper (3) and lower tool (4). A sheet to be formed (5) is placed in the bending tool arrangement (2). A light pattern (13) is emitted onto a section by means of a lighting device (11) of a bending angle measuring device (7), the section being a single part and surrounding a sub-region on a lateral surface of the lower tool (4) and of the sheet (5) placed in the bending tool arrangement. The light pattern (13) on the lower tool (4) and on the sheet (5) is detected by an image detecting device (10) of the bending angle measuring device (7), and a bending angle is ascertained from detected light pattern (13) by an analysis module. Furthermore, a transition portion (9) between the lower tool (4) and the sheet (5) is ascertained and, based thereon, a sub-detection region (19) in the detection range (8) of the image detecting device (10) is ascertained. The sub-detection region (19) is detected by the image detecting device (10) and the currently produced bending angle is ascertained while carrying out the bending process.