Automatic welding apparatus

Details Automatic welding apparatus Automatic welding apparatus

B - Operations, Transporting

23

K

327/37, 78/46

B23K 9/00 (2006.01) B23K 9/028 (2006.01)

Patent

CA 1206355

ABSTRACT OF THE DISCLOSURE An automatic welding apparatus is provided herein for forming a circular bead along a circumference of a first workpiece at its junction with a second workpiece in order to weld the first workpiece to the second workpiece. Such apparatus includes a turntable supported by a machine frame so as to rotate on its own axis and a clamp for fixedly clamping the second workpiece to an outer surface of the turntable for co-rotation therewith. A welding torch positioner is provided having a freely rotatable end member which is engageable with the first workpiece provisionally fixed to the second workpiece so as to revolve around a center of the turntable when the latter rotates on its own axis and a welding torch holder for adjustably holding a welding torch is supported by the welding torch positioner, with the welding torch maintained in a pre-set orientation. Finally a positioner guide mechanism is provided for supporting the welding torch positioner so as to permit free movement of the torch positioner in a plane extending in parallel relationship with respect to a surface plane of the turntable to keep engagement of the end member with the first workpiece before and during rotation of the turntable. In this way, the welding torch is always maintained in a pre-set constant position with respect to the junction of the first and second workpieces.

442225

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