Displacement monitoring system for stud welding

Details Displacement monitoring system for stud welding Displacement monitoring system for stud welding

1994-04-20

1995-04-11

Shaw, Clifford C.

Electric heating

Metal heating

For bonding with pressure

219 98, B23K 920

Patent

active

054060443

ABSTRACT:
A system (10) and method for predicting weld quality in a stud welding system by measuring the displacement of a movable shaft (20) with respect to the gun body (12) during the weld process. A sensor (34) is positioned with respect to the welding system in order to produce a series of discrete signal values each indicative of this displacement. These values are plotted graphically and used to produce a weld "signature" which can be compared with signatures of welds of known quality to more accurately predict the quality of the current weld. Based on these weld signatures, various weld parameters including current, time and lift can then be adjusted until a consistent signature indicative of good weld quality is produced.

REFERENCES:
patent: 4531042 (1985-07-01), Shoup et al.
patent: 5030815 (1991-07-01), Glorioso
patent: 5039835 (1991-08-01), Schwiete
patent: 5070226 (1991-12-01), Raycher et al.
patent: 5252802 (1993-10-01), Raycher
patent: 5317123 (1994-05-01), Ito

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