Decision method for dressing of welding electrodes
First Claim
Patent Images
1. A method for determining whether electrodes of an electric resistance welder are in need of replacement and dressing, comprising:
- monitoring the rate at which the depth of a weld indentation caused by electrode changes during the progressive wearing of the electrodes during the making of successive welds;
determining whether the rate of change of the depth of the weld indentation has substantially leveled off to a stable depth of indentation;
and dressing the electrodes in response to the determined substantial leveling off of the change in the depth of indention.
7 Assignments
0 Petitions
Accused Products
Abstract
A method is provided for determining that the electrodes of an electric resistance welder are in need of replacement and dressing includes monitoring the rate at which the depth of the weld indentation caused by the electrode changes during the progressive wearing of the electrodes during the making of successive welds. The electrodes are then dressed when it is determined that the rate of change of the depth of the weld indentation formed by the electrodes has substantially leveled off to a stable depth of indentation.
-
Citations
12 Claims
-
1. A method for determining whether electrodes of an electric resistance welder are in need of replacement and dressing, comprising:
-
monitoring the rate at which the depth of a weld indentation caused by electrode changes during the progressive wearing of the electrodes during the making of successive welds; determining whether the rate of change of the depth of the weld indentation has substantially leveled off to a stable depth of indentation; and dressing the electrodes in response to the determined substantial leveling off of the change in the depth of indention. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A method for determining whether a movable electrode and a fixed electrode of an electric resistance welder used to weld together workpieces are in need of replacement and dressing, comprising:
-
clamping a workpiece between the fixed electrode and the movable electrode by advancing the movable electrode; performing the welding operation by conducting electrical current through the electrodes while simultaneously advancing the movable electrode; measuring the travel of the movable electrode relative to the fixed electrode to thereby determine the depth of the weld indentation formed in the workpieces; and stopping the welding operation and dressing the electrodes when it is determined that the rate of change of the depth of the weld indentation caused by the electrode wear during the making of successive welds has substantially leveled off to a stable depth of indentation. - View Dependent Claims (8, 9, 10, 11, 12)
-
Specification