Automatic copying method for a welding torch in an arc welding robot
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United States of America Patent
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Nov 19, 1991
Issued Date -
N/A
app pub date -
Apr 25, 1990
filing date -
Dec 28, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In the case where lap fillet welding is carried out by a conventional arc welding robot, when a weld wire is once departed towards an upper plate, the wire keeps being away from a weld line, and therefore, various teaching techniques so as to prevent such a departure have been re-required. In the case where a weld line is long, if the wire is departed, a defective weld length becomes long, thus posing an significant problem. The present invention provides a control method for an arc sensor by detection of a weld current. That is, a departure of a lap fillet weld towards an upper plate is prevented merely by addition of a detection algorithm, teaching can be simplified and practical merits are great.
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