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    WELDING A METAL PRODUCT
    1.
    发明公开
    WELDING A METAL PRODUCT 审中-公开
    焊接金属制品

    公开(公告)号：EP2183075A2

    公开(公告)日：2010-05-12

    申请号：EP08788460.7

    申请日：2008-08-28

    申请人： Cct (Hinckley) Limited

    发明人： HOBBINS, John, Clifford

    IPC分类号： B23K26/24 ,  B23K37/04 ,  B21D53/04

    CPC分类号： B23K37/0408 ,  B21D25/02 ,  B21D25/04 ,  B21D53/045 ,  B23K26/244 ,  B23K2201/14

    摘要： A method of forming a welded metal product from a workpiece, comprising a sheet and a counterpart to which the sheet is to be welded, consisting in the steps of: • providing: • a workpiece support having a support surface for a workpiece counterpart, • means for: • gripping opposite edges of a workpiece sheet at respective opposite edges of the workpiece support, • drawing the opposite sheet edges in a direction having a component from a counterpart on the support surface towards the support surface and • holding the opposite sheet edges in their drawn position, • a robotic device associated with the workpiece support and • a laser welding head arranged to be moved by the robotic device in at least two dimensions with respect to the workpiece support, and to maintain a welding gap from a free face of the workpiece sheet on the supported counterpart in accordance with an array welds to be formed in welding together the sheet and the counterpart; • placing a workpiece counterpart on the workpiece support; • placing a workpiece sheet on the counterpart; • gripping, drawing and holding taught the workpiece sheet by opposite edges thereof to lie against the counterpart, captivating the latter, with the free face of the workpiece sheet defining a regular surface; • setting up the combination of the workpiece support, the robotic device and the laser welding head such that the welding gap is maintained between the laser welding head and the regular surface throughout traversing of the laser welding head for forming the array of welds; • traversing the laser welding head across the workpiece sheet and making the array of laser welds, thereby welding together the sheet and the counterpart, the array being two dimensional with respect to the sheet.

    STRETCH-FORMING MACHINE AND METHOD
    3.
    发明公开
    STRETCH-FORMING MACHINE AND METHOD 有权
    拉伸成型装置和方法

    公开(公告)号：EP1973678A2

    公开(公告)日：2008-10-01

    申请号：EP07718189.9

    申请日：2007-01-16

    申请人： CYRIL BATH COMPANY

    发明人： POLEN, Larry, Alexander ,  HARKEY, Jonathan, Todd

    IPC分类号： B21D11/02

    CPC分类号： B21D11/02 ,  B21D25/04

    摘要： A stretch-forming machine of the type wherein a pair of opposed curving jaw assemblies grip opposite end edge portions of a metal sheet for initially stretching the metal sheet into a yield state and forming the metal sheet into a predetermined curved configuration. The pivot and the actuator cooperate to stretch the outer corners of the metal sheet while substantially minimizing elongation along the centerline of the metal sheet.

    METHOD AND APPARATUS FOR FORMING A COMPOUND CURVATURE METAL SKIN
    4.
    发明公开
    METHOD AND APPARATUS FOR FORMING A COMPOUND CURVATURE METAL SKIN 审中-公开
    用于形成复合曲率金属皮肤的方法和设备

    公开(公告)号：EP3277446A1

    公开(公告)日：2018-02-07

    申请号：EP16710779.6

    申请日：2016-03-21

    申请人： University Of Ulster

    发明人： LEACOCK, Alan

    IPC分类号： B21D25/02 ,  B21D25/04 ,  B21D53/92

    CPC分类号： B21D25/02 ,  B21D22/18 ,  B21D22/26 ,  B21D25/04 ,  B21D53/92

    摘要： A method of forming a compound curvature metal skin includes providing a blank defining at least a sector of a truncated cone, providing an arcuate or annular punch substantially corresponding in shape to an inner surface of the compound curvature metal skin, gripping a leading edge of a sheet metal blank between mating faces of a first blank holder on a first side of the punch, gripping a trailing edge of the blank between mating faces of a second blank holder on a second side of the punch opposite to the first side, displacing the blank holders with respect to the punch to draw the blank over the punch while permitting the blank to flow between mating surfaces of at least one of the blank holders, including displacing each of the blank holders with respect to the punch by different amounts and at different rates.