Automatic speed control for seam welding

Electric heating – Metal heating – By arc

Patent

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Details

21912432, B23K 912

Patent

active

043160760

ABSTRACT:
A welding machine for use in connection with seam welding a pair of metal parts which are positioned to form a welding groove, and wherein the groove width undesirably varies at random due to improper part positioning or deviations from desired tolerance. The weld head is moved along the groove by a drive motor and is preceeded by a pair of fixedly connected sensing probes. The primary probe follows the groove wall portion of one of the parts, while an auxiliary probe follows a surface on the other part. Variations in groove width cause variations in the distance between the two probe tips, said latter variations being utilized to automatically change the speed of the weld head drive motor.

REFERENCES:
patent: 2719899 (1955-10-01), Schwarting
patent: 3612818 (1971-10-01), Bechtle et al.
patent: 3855446 (1974-12-01), Kotova et al.
patent: 3924094 (1975-12-01), Hansen et al.

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