Controller for resistance welding machine

Details Controller for resistance welding machine Controller for resistance welding machine

1989-10-16

1990-11-27

Shaw, Clifford C.

Electric heating

Metal heating

For bonding with pressure

219108, B23K 1124

Patent

active

049738143

ABSTRACT:
An inverter-type resistance welding machine includes a keyboard for inputting desired welding current command data corresponding to commanded values, a display unit for displaying, in the form of a numerical table or graph, the welding current command pattern data inputted by the keyboard, a memory for storing a plurality of the welding current command patterns set by the keyboard and from which these patterns are read out in response to a selection command from the keyboard to serve as a control command of the inverter, and acceptability decision means which successively accepts detected welding current at the time of welding for making a comparison with the reference welding current command pattern over a full range of values, checking correlation between the detected welding current and the reference welding current command pattern and determining whether the detected welding current lies within a predetermined tolerance.

REFERENCES:
patent: 4717805 (1988-01-01), Miyagawa

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