Seam welding method and seam welding device
AssigneeHonda Motor Co., Ltd.
InventorsTakafumi Ikeda, Mitsugu Kaneko, Noriko Kurimoto, Kazuhiko Yamaashi
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Abstract
A seam welding device sandwiches between a first roller electrode and a second roller electrode a laminate, which is formed by laminating a plurality of workpieces and disposing the thinnest workpiece, which has the smallest thickness among the workpieces, on the outside, to carry out seam welding. The second roller electrode, which is in contact with the thinnest workpiece, is disposed further along the direction of welding progress than the first roller electrode.
Claims6
A seam welding method for performing seam welding by sandwiching a stacked assembly between a pair of roller electrodes, the stacked assembly comprising a plurality of workpieces stacked, together with arranging a thinnest workpiece having a smallest thickness on an outermost side;
- wherein the pair of roller electrodes are connected to a welding power source such that the pair of roller electrodes have opposite polarity with respect to each other, and
- in a state in which one of the roller electrodes in contact with the thinnest workpiece is arranged more forwardly in a welding direction than the other of the pair of the roller electrodes, supply of current is carried out between the pair of roller electrodes while the pair of roller electrodes is moved relatively with respect to the stacked assembly, so that a current pathway inclined in a direction opposite to the welding direction is formed, the current pathway being inclined more from the one of the roller electrodes toward the other of the pair of the roller electrodes.
A seam welding device that performs seam welding by sandwiching a stacked assembly between a pair of roller electrodes, the stacked assembly comprising a plurality of workpieces stacked, together with arranging a thinnest workpiece having a smallest thickness on an outermost side;
- wherein the pair of roller electrodes are connected to a welding power source such that the pair of roller electrodes have opposite polarity with respect to each other,
- one of the roller electrodes in contact with the thinnest workpiece is arranged more forwardly in a welding direction than the other of the pair of the roller electrodes, and
- a current pathway inclined in a direction opposite to the welding direction is formed in the seam welding, the current pathway being inclined more from the one of the roller electrodes toward the other of the pair of the roller electrodes.
Dependencies are inferred from the claim text.