Electric heating – Metal heating – By arc
Patent
1983-11-18
1985-08-27
Shaw, Clifford C.
Electric heating
Metal heating
By arc
21912434, 21913771, 901 42, B23K 910
Patent
active
045380473
ABSTRACT:
An automatic welding apparatus including a robot which comprises a base, a rotary support rotatably mounted on the base, a pair of first arms pivotally movable together and rotatably supported each at its one end by the rotary support, a second arm rotatably supported by the other ends of the first arms at an intermediate portion close to its one end, and a hand connected to the other end of the second arm and rotatable about two axes intersecting each other at right angles. A core wire is supplied from a feeder to a welding torch attached to the hand of the robot. A control device controls movement of the robot, operation of the core wire feeder and power supply to the welding torch. When the forward end of the welding torch comes into contact with the work to be welded, with the core wire drawn into the torch, the resulting short-circuiting is detected to detect the position of the work. The amount of the core wire to be projected from the torch is controlled with reference to the position of the work thus detected.
REFERENCES:
patent: 2832000 (1958-04-01), Steele
patent: 4249062 (1981-02-01), Hozumi et al.
patent: 4356378 (1982-10-01), Cloos et al.
patent: 4396344 (1983-08-01), Sugimoto et al.
Miyawaki Kunio
Mogi Shigeo
Nakano Teruo
Ohtani Hideji
Hitachi Zosen Corporation
Shaw Clifford C.
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