Method of controlling robot for use in arc welding

Details Method of controlling robot for use in arc welding Method of controlling robot for use in arc welding

1995-08-17

1997-04-29

Sims, Clifford C.

Electric heating

Metal heating

By arc

21912511, 901 42, B23K 9127

Patent

active

056245882

ABSTRACT:
A robot supports a welding torch for use in arc welding of a cylindrical welding object. The welding object is rotated about an axis and is controlled by a robot controller. The robot is operated to track the welding torch along a calculated welding line to continuously position the welding torch along the welding line. A reference circle is formed by rotation of one point on the welding object. A coordinate system is set with a center corresponding to the center of the reference circle. A laser sensor detects a point on the welding line, and the detected point is stored by using a distance r from a center O of the work coordinate system and a z-coordinate value z. As the cylindrical welding object is rotated by an angle .theta. corresponding to an interval between the position detected by the laser sensor and a calculated second position, the welding torch is moved to a position to coincide with the second position.

REFERENCES:
patent: 4014495 (1977-03-01), Oda et al.
patent: 4508953 (1985-04-01), Murakami et al.
patent: 5399870 (1995-03-01), Torii et al.
patent: 5465037 (1995-11-01), Huissoon et al.

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