Seam welding method and seam welding apparatus
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United States of America Patent
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Apr 30, 2013
Issued Date -
N/A
app pub date -
Dec 3, 2009
filing date -
Jan 7, 2009
priority date (Note) -
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Abstract
The seam welding apparatus welds a workpiece held by a robot while delivering the workpiece between a pair of electrode rolls. The seam welding apparatus includes a load cell mounted on the robot, for detecting a load imposed along a Y direction which is perpendicular to a pressing direction Z along which the electrode rolls press the workpiece at a weld point and a delivering direction X along which the robot delivers the workpiece at the weld point, a robot controller and an arithmetic unit, a turning mechanism for turning the electrode rolls about the pressing direction Z, and a control device for controlling the turning mechanism to operate depending on the magnitude of the load in the Y direction detected by the load cell.
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