Abstract: An automatic welding machine for arc-welding stator core laminations is disclosed. The machine carries singular or plural workpieces which are fixtured on a vertical slideway. A slide moves past relatively stationary welding guns which are independently adjusted and independently activated for the weld process. The workpieces may be indexed for desired weld spacing. In one embodiment the indexing may be manual or power actuated. In another embodiment the guns may be varied as to radial position as the workpiece is moved, to weld non-constant cross-sectioned parts.