Abstract: A stator core is formed of helical convolutions wound edgewise from a continuous strip of ferromagnetic material. The core is in the from of a plurality of flux rings having a plurality of spaced apart integrally formed lugs outwardly extending along an outer circumferential edge of the flux ring, where each lug has deformable edges. Pole pieces are fastened to the flux rings and each flux ring has a body portion defined by an annular front portion. The body portion has first and second arms that project laterally from the body portion and extend along a portion of the outer circumferential edge. Each pole piece is operatively secured between two adjacent lugs such that the annular front portion abuts the outer circumferential edge of the flux ring. When secured, the arms abut the corresponding deformable edges of the lug. A portion of the deformable edges of the lug are then deformed and expand to overlap the arms to wedge pole piece between the circumferential edge and the lugs.

Abstract: A method for predeterminately sizing a core using a pair of generally opposed die means operable for compressing only an outer circumferential section of the core defined generally axially between a pair of opposite end faces of the core at least generally adjacent an outer circumferential surface thereof, respectively. A pair of sizing means are operable for disposition in confronting and predetermined radially spaced apart relation with the outer circumferential surface and a plurality of tooth tip rows defining an inner circumferential surface of the core between the opposite end faces thereof, and the outer circumferential surface and the tooth tip rows of the core are displaced generally radially inwardly thereof into sizing engagement with the sizing means thereby to effect the predetermined sizing of the inner and outer circumferential surfaces of the core in response to the compressing of only the outer circumferential section of the core by the opposed die means, respectively.

Abstract: A core for a dynamoelectric machine has a stack of generally thin ferromagnetic material. The stack includes a pair of opposite end faces, a pair of generally radially spaced apart circumferential surfaces interposed between the opposite end faces, and a deformed circumferential section between the opposite end faces and at least generally adjacent one of the circumferential surfaces and defining a generally annular beveled surface on at least one of the opposite end faces.

Abstract: Apparatus for forming edgewise wound cores from a generally thin strip of ferromagnetic material has a mechanism for edgewise deforming the strip into a plurality of helical convolutions which are received in an axial stack thereof on an arbor. The arbor is movable through an opening in a carriage to deposit the axial stack on the carriage, and the axial stack is displaced from the carriage onto a conveyor when the carriage is moved into a position remote from the arbor and adjacent the conveyor.

Abstract: A method of forming an edgewise wound core from a lanced strip of generally thin ferromagnetic material having a yoke section, a plurality of teeth extending generally laterally from the yoke section on a plurality of preselected pitch axes, and a plurality of arcuate edges intersecting with each other on the yoke section facing generally opposite the teeth. In practicing this method, the lanced strip is deformed into a plurality of helical convolutions, and the helical convolutions are accumulated in a generally axial stack with the arcuate edges and teeth extending generally radially outwardly and inwardly of the stack. The teeth and the arcuate edges are respectively aligned generally in axial row formations thereof across the stack, and the teeth and the intersections between adjacent ones of the arcuate edges are disposed generally in radial alignment with each other on the pitch axes of the teeth, respectively.

Abstract: A method for forming an edgewise wound core from a lanced strip of generally thin ferromagnetic material. The lanced strip includes a pair of sets of segments extending generally lengthwise thereof with the segments of one of the segment sets being integrally interposed between the segments of the other of the segment sets, and a set of salient pole teeth are integral with the segments of the one segment set extending generally laterally therefrom. In practicing this method, successive segments of the other segment set are successively and independently edgewise constrained, and the salient pole teeth and segments of the one segment set are unconstrained. Only the edgewise constrained segments of the other segment set are edgewise deformed, and the unconstrained salient pole teeth and segments of the one segment set are maintained in their original lanced configurations.A method of operating apparatus for continuously forming edgewise wound cores is also disclosed.

Abstract: A method of continuouly forming edgewise wound cores from a continuous lanced strip of a ferromagnetic material having a pair of opposite faces interposed between a pair of opposite edges at least in part extending lengthwise of the lanced strip. In practicing this method, the lanced strip is continuously drawn through a bending zone in which at least the opposite edges are constrained, and the lanced strip is continuously deformed generally edgewise thereof about an axis of the bending zone so as to continuously from a plurality of helical convolutions. At least as the lanced strip travels beyond the bending zone, the lanced strip is pressed against a rotatable surface to effect the continuous drawing of the lanced strip through the bending zone.A core, a lanced strip, and apparatus are also disclosed.

Abstract: A lanced strip of generally thin ferromagnetic material adapted to be edgewise wound into a core for a salient pole dynamoelectric machine. A continuous yoke section of the lanced strip extends generally lengthwise thereof and includes a pair of generally opposite edges, and a set of spaced apart notches in one of the opposite edges with each notch having an arcuate edge therein, respectively. A set of spaced apart teeth are integral with the other of the opposite edges and extend generally laterally from the yoke section, and the teeth includes a set of free end sections each having another arcuate edge defining at least a part thereof and with respective ones of the first named and another arcuate edges having a common centerpoint, respectively.A core for a salient pole dynamoelectric machine is also disclosed.

Abstract: Apparatus for forming edgewise wound cores from continuous strip stock of a generally thin ferromagnetic material has a means operable generally at an intermittent rate for lancing the strip stock. The lancing means includes continuous driving means for effecting the operation of the lancing means at its intermittent rate and means operable generally for feeding the strip stock to the lancing means and the continuous strip therefrom concomitantly with the intermittent rate. Means arranged to receive the continuous step from the lancing means is operable continuously for deforming the continuous strip generally edgewise thereof into a plurality of generally helical convolutions.

Abstract: Apparatus for predeterminately sizing a core has a pair of generally opposed dies operable for compressing only an outer circumferential section of the core defined generally axially between a pair of opposite end faces of the core at least generally adjacent an outer circumferential surface thereof, respectively. Sizing jaws and a sizing arbor are operable for disposition in confronting and predetermined radially spaced apart relation with the outer circumferential surface and a plurality of tooth tip rows defining an inner circumferential surface of the core between the opposite end faces thereof, and the outer circumferential surface and the tooth tip rows of the core are displaced generally radially inwardly thereof into sizing engagement with the sizing jaws and sizing arbor thereby to effect the predetermined sizing of the inner and outer circumferential surfaces of the core in response to the compressing of only the outer circumferential section of the core by the opposed dies, respectively.

Abstract: A method of forming an edgewise wound core from a strip of a generally thin metallic material. In this method, a plurality of segments arranged generally in side-by-side relation are formed in the strip along the length thereof, and each segment is freed from an adjacent segment at each of a plurality of reaches thereof along the length of the strip with the segments being supported at junctures disposed between the ends of the reaches. The strip is deformed generally edgewise thereof thereby to form a plurality of convolutions of the strip, and each segment is also deformed edgewise thereof free of the adjacent segments along each of the reaches with the deformed segments being supported at the junctures between the reaches, respectively.

Abstract: Apparatus for continuously forming edgewise wound salient pole cores from a continuous lanced strip of generally thin ferromagnetic material. The lanced strip includes a yoke section extending generally lengthwise thereof and having a pair of sets of segments therein with the segments of one of the segment sets being integrally interposed between the segments of the other of the segment sets, and a set of salient pole teeth integral with the segments of the one segment set so as to extend generally laterally from the yoke section. The apparatus has a pair of means operable generally for effecting generally edgewise deformation of only the segments of the other segment set in the yoke section of the lanced strip upon the continuous passage of at least the yoke section between the edgewise deformation effecting means.

Abstract: A lanced strip of generally thin ferromagnetic material adapted to be edgewise wound into a core for a dynamoelectric machine. The lanced strip has a yoke section extending generally lengthwise thereof, and a plurality of teeth on the lanced strip are disposed about a plurality of preselected pitch axes and extend generally laterally from the yoke section, respectively. A plurality of slits in the yoke section extend generally lengthwise thereof and span between a preselected number of the teeth, respectively. An edgewise wound core is also disclosed.

Abstract: A method of continuously forming edgewise wound cores. A continuous strip of ferromagnetic material is fed to a winding station and through a means operable generally for severing the continuous strip, and the continuous formation of the edgewise wound cores is effected at the winding station from the continuous strip fed thereto. The thickness of the continuous strip is measured along the length of the continuous strip fed to the winding station, and the thickness measurements are summed. The summation of the thickness measurements are compared with a preselected value corresponding to a predetermined stack height for each of the edgewise wound cores formed at the winding station, and the severing means is operated to sever the continuous strip at least generally when the summation of the thickness measurements attains the preselected value thereby to terminate the formation of respective ones of the edgewise wound cores at the winding station.

Abstract: A lanced strip of generally thin ferromagnetic material has a continuous yoke section extending generally lengthwise thereof, and a plurality of teeth on the lanced strip are aligned generally about a plurality of pitch axes therefor and extend generally laterally from the yoke section, respectively. A plurality of slots extend through the lanced strip between adjacent ones of the teeth, respectively. The yoke section includes a plurality of sets of generally arcuate inner and outer edges, the arcuate inner edges extend between the adjacent ones of the teeth thereby to define closed ends of the slots and adjacent ones of the arcuate outer edges intersect with each other at the pitch axes of the teeth, respectively.