Monitor for electric arc welding machine

Abstract

A monitor for an electric arc welder as the welder performs a selected arc welding process by creating actual welding parameters, such as arc current and arc voltage, between an advancing welding wire and a workpiece, where the process involves an arc and is defined by a series of rapidly repeating wave shapes constituting a weld cycle with a cycle time, the wave shapes are each segmented into time states having command signals corresponding to the actual parameters and a time duration. The monitor selects a specific wave shape state, reads one of the actual parameters, compares the actual read parameter with a function of the command signal corresponding to the actual parameter, and uses the comparison to generate a characteristic of the welding process during the selected state. <IMAGE>

Description

technical field [0001] The invention relates to the field of arc welding and in particular to a monitor for monitoring arc welding parameters and / or internal control signals during a welding cycle in order to check the quality related to the characteristics of each welding cycle. Furthermore, the present invention also relates to a method of monitoring an arc welder during a welding cycle providing information about the actual performance of the welder during each welding cycle. Background technique [0002] Over the years, both welding companies and welding engineers have paid great attention to the electrical characteristics that record the operating parameters performed by arc welders when using various welding methods. U.S. Patent 3,950,759 to Ziegenfuss is representative of a variety of arc welder monitors and can be referenced as background art. Various time monitors have been used in arc welders over the years to detect when the weld is actually being applied. For t...

AI Technical Summary

Problems solved by technology

In general, the monitoring of arc welders used for various welding methods is unsatisfactory because there is no knowledge available to evaluate the welding method when implementing it

The powerful programming capabilities now available cannot overcome the shortcomings of systems that produce real-time and accurate readings of welder performance

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