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US 4,762,283 AGranted
Machine and method for forming windings on electric motor stators
AssigneeAxis AB
InventorLuciani Sabatino
Life of this patent
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AssigneeAxis AB
InventorLuciani Sabatino
Estimating the term…
A machine for forming windings on electric motor stators, comprising a needle driven with reciprocating rectilinear motion combined with reciprocating rotary motion about its axis. The needle has two opposing points, which are orthogonal to the needle. The needle carries copper wires unwinding from reels in order to deposit the wires in slots in a stator armature. The needle is split into two arms or ends oscillating between a position of substantial parallelism, in which the ends of the points are at a distance apart which is less than the maximum width of the inner cavity of the stator, and a position of maximum divergence in which the ends of the points are at a distance apart which exceeds the distance between the ends of the teeth which frontally retain the windings in the opposite slots of the stator. Linkages are connected to members which effect the reciprocating translational and rotary movements of the needle in order to determine the position of parallelism during the translation of the needle within the stator cavity, and to cause the arms or their ends to diverge when the needle is external to the stator during its rotation about the slots until it reaches the position of maximum divergence, and then to return it to its position of parallelism.
A method for forming windings on electric motor stators comprising positioning a stator, traversing the inside of the stator in one direction with a needle having two pivotable arms with an orthogonal point on the end of each arm in a closed position and between which wire runs to create the winding on the stator, opening the arms and separating the points once the points have moved beyond one end of the stator by rotating the needle arms about a common axis to bring the wire into contact with the stator, closing the arms and points by rotation of said arms about a common axis, traversing the interior of the stator in the opposite direction with the needle arms and points in a closed position, opening the arms and separating the points once the points have moved beyond the other end of the stator by rotating the needle arms about the common axis to bring the wire into contact with the stator, closing the arms and points by rotation of said arms about a common axis and repeating the cycle until the stator is completely wound.
A machine for forming windings on an electric motor stator having front and rear faces, a stator axis extending between said faces, an internal cavity surrounding said stator axis and retention teeth projecting away from said stator axis along said front and rear faces, the machine comprising:
A method of forming windings on an electric motor stator having front and rear faces, a stator axis extending between said faces, an internal cavity surrounding said stator axis and retention teeth projecting away from said stator axis along said front and rear faces, the method comprising the steps of:
Dependencies are inferred from the claim text.