| 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. |
