Precise positioning for a welding electrode which follows a thre

Details Precise positioning for a welding electrode which follows a thre Precise positioning for a welding electrode which follows a thre

1982-04-22

1985-08-27

Shaw, Clifford C.

Electric heating

Metal heating

By arc

21912403, 2191241, B23K 912

Patent

active

045380465

ABSTRACT:
A welding apparatus which includes a welding electrode and a filler wire assembly. The welding electrode and the filler wire assembly are fixed together and are to move along a weld path on a workpiece. The weld path may either take a regular or an irregular shape. The welding electrode is mounted on a welding electrode bracket which is rotatably mounted on a rotational axis upon a housing. The rotational axis of the filler wire assembly in respect to the welding electrode is precisely controlled so that just the tip of the filler wire is continuously located just forward (along the weld path) of the tip of the welding electrode regardless of the direction of movement of the welding electrode along the weld path. Three dimensional, preprogrammed movement along an X-axis, a Y-axis and a Z-axis can occur between the welding electrode and the workpiece. The welding electrode is also permitted an additional amount of limited movement along the Z-axis which is not programmed. This limited movement is to maintain the electrode at a constant distance from the workpiece within the weld path. This is obtained through an automatic voltage control system which is to hold the arc voltage constant.

REFERENCES:
patent: 3119009 (1964-01-01), Zeller
patent: 3815807 (1974-06-01), Bartley
patent: 3924094 (1975-12-01), Hansen et al.
patent: 4215299 (1980-07-01), Edwin et al.
patent: 4255643 (1981-03-01), Balfanz
patent: 4418266 (1983-11-01), Rosenbeck et al.

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