Abstract A method for controlling a weaving path of a welding torch to trace a welding line in consumable electrode arc welding, including: detecting in a rightward weaving stroke of weaving motion a welding current level IL 1 at the left end position of the weaving motion and a minimum current level IL 2 during the period of the rightward weaving stroke and in a leftward weaving stroke of weaving a welding current level IR 1 at the right end position of the weaving motion and a minimum current level IR 2 during the period of the leftward weaving stroke; calculating the values of differential current (IL 1 -IL 2 ) and (IR 1 -IR 2 ) in the rightward and leftward weaving strokes, respectively; comparing and computing a disparity, if any, between the differential current values; and shifting the position of a median point of weaving motion according to the extent of the disparity in the differential current values.
Inventors
👤 Kenji Kasahara
👤 Yoshiaki Munezane
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-11-01 06:15
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/12; B23K9/127
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
159 words
A method for controlling a weaving path of a welding torch to trace a welding line in consumable electrode arc welding, the comprising: detecting in a rightward weaving stroke of weaving motion a welding current level IL 1 at the left end position of the weaving and a minimum current level IL 2 during the period of the rightward weaving stroke and in a leftward weaving stroke of weaving a welding current level IR 1 at the right end position of the weaving motion and a minimum current level IR 2 during the period of the leftward weaving stroke; calculating the values of differential current (IL 1 -IL 2 ) and (IR 1 -IR 2 ) in the rightward and leftward weaving strokes, respectively; comparing and computing a disparity, if any, between said differential current values; and shifting the position of a median point of weaving motion according to the extent of said disparity in said differential current values.
Claim 2
Independent Claim
159 words
A method for controlling a weaving path of a welding torch to trace a welding line in consumable electrode arc welding, the comprising: detecting in a rightward weaving stroke of weaving motion a welding current level IL 1 at the left end position of the weaving and a minimum current level IL 2 during the period of the rightward weaving stroke and in a leftward weaving stroke of weaving a welding current level IR 1 at the right end position of the weaving motion and a minimum current level IR 2 during the period of the leftward weaving stroke; calculating the values of differential current (IL 1 -IL 2 ) and (IR 1 -IR 2 ) in the rightward and leftward weaving strokes, respectively; comparing and computing a disparity, if any, between said differential current values; and shifting the position of a median point of weaving motion according to the extent of said disparity in said differential current values.
Claim 3
Dependent Claim
24 words
A method as set forth in claim 1, wherein said end and minimal levels of said welding current are detected through a low-pass filter.
Claim 4
Dependent Claim
40 words
A method as set forth in claim 2, wherein said welding current levels at said left and right end positions are read with a time delay corresponding to a phase lag of the welding current signal through said low-pass filter.