Electric heating – Metal heating – By arc
Patent
1979-12-31
1982-02-16
Shaw, C. C.
Electric heating
Metal heating
By arc
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.
C-R-O, Inc.
Shaw C. C.
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