Method of winding armature of revolving-field electric machine and armature
AssigneeKabushiki Kaisha Moric
InventorsTadashi Takano, Susumu Ando, Yoshio Kato
Life of this patent
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Abstract
An automatic machine and method of winding of armatures having maximum coil density because the winding nozzle does not enter into the slots between the pole teeth and the wire is restrained at at least one the ends of the core portion of the armature to facilitate winding.
Claims17
A method of winding the coils of a rotating electrical machine on a circular core of magnetic material with a plurality of magnetic pole teeth extending radially from the circular core, each of the magnetic pole teeth defining a core and slots formed there between each of the slots defines a mouth that is formed between adjacent outer ends of the cores, said winding method comprising the steps of positioning a threading needle having an opening through which the wire for the winding of the coils is fed into proximity to one of the mouths, moving the needle opening in a path around one of the pole teeth and at one side of the slot without moving the needle in any substantial distance along the length of the one pole tooth to form a first winding, retaining a portion of at least the initial winding at the circular core side of the pole tooth, continuing the movement of the needle opening in a path around the one of the pole teeth at the one side of the slot without moving the needle in any substantial distance along the length of the one pole tooth to form succeeding windings, the pulling action of restrained winding portion forcing the previous winding along the pole tooth toward the circular core without requiring movement of the needle in any substantial distance along the length of the one pole tooth so that the needle not be moved any substantial distance into the slot.
An apparatus for winding the coils of a rotating electrical machine on a circular core of magnetic material with a plurality of magnetic pole teeth extending radially from the circular core, each of the magnetic pole teeth defining a core and slots formed there between each of the slots defines a mouth that is formed between adjacent outer ends of the cores, apparatus comprising a threading needle having an opening through which the wire for the winding of the coils is fed into proximity to one of the mouths, a drive for moving the needle opening in a path around one of the pole teeth and at one side of the slot without moving the needle in any substantial distance along the length of the one pole tooth to form a first winding, and a restraining device restraining a portion of at least the initial winding at the circular core side of the pole tooth during continuing the movement of the needle opening in a path around the one of the pole teeth at the one side of the slot without moving the needle in any substantial distance along the length of the one pole tooth to form succeeding windings, said restraining device forcing the previous winding along the pole tooth toward the circular core without requiring movement of the needle in any substantial distance along the length of the one pole tooth so that the needle not be moved any substantial distance into the slot during subsequent winding.
Dependencies are inferred from the claim text.