G - Physics – 01 – N
Patent
G - Physics
01
N
340/134, 349/33,
G01N 29/04 (2006.01) B23K 9/127 (2006.01) B23Q 35/127 (2006.01)
Patent
CA 1108742
METHOD AND DEVICE FOR AUTOMATICALLY DIRECTING SYSTEMS TO THE CENTER OF WELD GAPS, WELD JOINTS AND WELD CHAMBERS ABSTRACT OF THE DISCLOSURE An arrangement for automatically tracking systems to the center of weld gaps, weld joints or weld reinforce- ments, in which a scanning probe is used for receiving signals reflected by a workpiece surface, as long as the surface is substantially parallel to an acting surface of the probe. The signals break down spontaneously when the surface clearly deviates from the parallel as in the case with left and right flanks of gaps, joints or rein- forcements. The signal breakdown is a decrease in intensity of a reflection signal to a fraction of previous reflection energy. The breakdown of the signal is applied for storing an electrical value corresponding to the instantaneous probe position. The center of the gap, of the joint or of the reinforcement is computed from the stored electronic position values, and the computed value is compared with an electrical value corresponding to the center position of the system. A control command signal is formed from a difference of compared values for actuating a drive unit to return the system to the computed center of the weld gap. The signals are evaluated only up to their first re- flection breakdown per probe oscillation direction.
288636
Krenzer Paul
Peters Franz-Josef
Schlusnus Karl-Heinz
Wahl Hans-Jurgen
Hoesch Werke Ag Hauptverwaltung
Kirby Eades Gale Baker
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