Abstract: A method and a plant for making packs of metal sheets forming rotors or stators of electric machines or the like by stacking a predetermined number of metallic sheets and stably connecting those sheets along at least two weld beads in opposing or different angular positions, include providing at least one subgroup of the metallic sheets defining the pack of sheets, and disposing, at least at one region of reciprocal contact of the surfaces of the sheets, one or more adhesive substances that solidarize the sheets of the subgroup. The one or more adhesive substances can be activated by chemical-physical action, and the solidarization of the subgroups of sheets is carried out before stacking with the remaining sheets of the pack, or in one or more steps subsequent to the stacking, simultaneously or separately to the application of the weld beads.

Abstract: A method for automatically forming bundles of metal laminations, adapted for armatures of electrical machines or the like, by automatic precision dosing of a lamination bundle produced by picking up and separating a preset number of laminations, includes grabbing, at one end of a lamination stack, a preset number of laminations; separating the number of laminations of the bundle from the lamination stack by axially moving the bundle away from the lamination stack by a preset distance; detaching one or more laminations, if any, at the end of the lamination bundle facing the lamination stack, which may have remained adherent to a last intended lamination by being clamped by a part of their thickness or glued to the lowest lamination of the lamination bundle; and collecting the lamination or laminations, if any, detached from the lamination stack end in a position axially aligned with the laminations of the stack.