Welding leads to commutator bars

Details Welding leads to commutator bars Welding leads to commutator bars

H - Electricity

02

K

26/113, 310/119

H02K 15/00 (2006.01) B23K 20/10 (2006.01) H01R 39/32 (2006.01) H02K 15/04 (2006.01)

Patent

CA 1045358

WELDING LEADS TO COMMUTATOR BARS ABSTRACT OF THE DISCLOSURE An improved method for electrically and mechan- ically bonding or otherwise uniting the armature windings of a dynamoelectric machine armature to the commutator of that armature is disclosed. After the armature wires have been aligned within the commutator riser slots, an ultrasonic welding tip is applied to the radially outer surface of the outermost wire within the riser slot and welding energy is transferred from the welding tip to the wire within the slot to weld those wires within the slot. The welding tip and armature assembly are then radially separated to remove the welding tip from the slot and the armature is indexed to place a subsequent riser slot, and its armature windings, in alignment with the welding tip for a further welding step. Upon completion of sufficient indexing and welding steps to weld each pair of armature winding wires within their appropriate commutator riser slots the armature is withdrawn from the welding fixture and subsequent metal removal and finishing operations are applied thereto to provide a completed armature assembly.

221497

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