| 摘要 |
A computer (20) executes a routine that allows supervision of a multi-gun welding system (26, 28), a programmable logic controller (22) controls movement of the guns and gun delivery devices, gun sensors measure the displacement of gun electrodes (29), delivery device sensors (33, 35) determine a location of the gun delivery devices, fixture sensors (41) measure the location of a workpiece fixture (40), a weld controller (34) applies power to the gun electrodes and an analog-to-digital converter converts the outputs of the sensors to digital signals readable by the computer. An embodiment of the weld routine executed by the computer spatially gauges the pre-weld fit-up of the workpieces and inhibits application of weld power if the fit-up is not within a specified tolerance, detects struck gun conditions after the weld, and diagnoses various faults during the welding based upon electrode position. A retro-fit gun sensor (30, 32) is disclosed which utilizes an electrode positioning bracket coupled to the electrode.
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