Abstract: A rotary electric rotor includes a rotor core having a shaft through-hole; a rotor shaft having a male screw portion on its first side; a washer having an annular structure with cutouts elastically deformable in a radial direction, having a washer tapered surface, and having an annular projection portion that extends in an axial direction from an end surface and is fixed to the rotor core in a state of being disposed in a gap between an inner circumferential surface of the shaft through-hole and an outer circumferential surface of the rotor shaft and pressing the inner circumferential surface of the shaft through-hole, the end surface and the washer tapered surface are opposite surfaces of the washer; and a nut having a female screw portion that meshes with the male screw portion and having a nut tapered surface that faces the washer tapered surface.

Abstract: Provided is a laminate having a reduced loss ratio while maintaining a high space factor. The present disclosure relates to a laminate for use in a core, comprising: a strip laminate composed of soft magnetic metal strips; and an insulating layer provided on a surface of the strip laminate, wherein each one layer of the soft magnetic metal strips has a thickness of 100 ?m or less, each one layer of the soft magnetic metal strips has an oxide film on their surfaces, the strip laminate is composed of at least two layers of the soft magnetic metal strip, and the strip laminate and the insulating layer are alternately disposed.

Abstract: The present disclosure provides a method for producing a magnetic component that enables efficient processing of an amorphous soft magnetic material or a nanocrystalline soft magnetic material. The method for producing a magnetic component comprising an amorphous soft magnetic material or nanocrystalline soft magnetic material comprises: a step of preparing a stacked body comprising a plurality of plate-shaped amorphous soft magnetic materials or nanocrystalline soft magnetic materials; a step of heating at least a portion of shearing in the stacked body to a temperature equal to or higher than the crystallization temperature of the soft magnetic materials; and a step of shearing the stacked body at the portion of shearing after the step of heating.

Abstract: A rotary electric-machine rotor includes: a rotor core made of magnetic material, the rotor core having magnet holes; magnets disposed in the magnet holes; resin portions disposed in at least part of gaps between the magnet holes and the magnets, the resin portions extending in the axial direction; and end plates disposed adjacent to end surfaces in an axial direction of the rotor core. The end plates are members made of magnetic material. The end plates cover end surfaces of the magnets in the axial direction and end surfaces of the resin portions in the axial direction, and each of the end plates having at least one holes disposed in a position that faces at least one part of the end surfaces of the magnets.

Abstract: Provided is a laminate having a reduced loss ratio while maintaining a high space factor. The present disclosure relates to a laminate for use in a core, comprising: a strip laminate composed of soft magnetic metal strips; and an insulating layer provided on a surface of the strip laminate, wherein each one layer of the soft magnetic metal strips has a thickness of 100 ?m or less, each one layer of the soft magnetic metal strips has an oxide film on their surfaces, the strip laminate is composed of at least two layers of the soft magnetic metal strip, and the strip laminate and the insulating layer are alternately disposed.

Abstract: The present disclosure provides a method for producing a magnetic component that enables efficient processing of an amorphous soft magnetic material or a nanocrystalline soft magnetic material. The method for producing a magnetic component comprising an amorphous soft magnetic material or nanocrystalline soft magnetic material comprises: a step of preparing a stacked body comprising a plurality of plate-shaped amorphous soft magnetic materials or nanocrystalline soft magnetic materials; a step of heating at least a portion of shearing in the stacked body to a temperature equal to or higher than the crystallization temperature of the soft magnetic materials; and a step of shearing the stacked body at the portion of shearing after the step of heating.

Abstract: A shrink-fitting method for a laminated rotor includes: disposing, coaxially with a laminated rotor core, an annular ring having a through-hole, at an axial end of the laminated rotor core including laminated annular steel sheets and having a through-hole extending in its axial direction; and inserting a rotor shaft into the through-holes of the ring and the laminated rotor core after heating them. A ring attachment jig having a circular internal space, where the ring is disposed, has projections projecting from an axial end surface thereof in the axial direction and arranged along a circumferential direction of the circular internal space. The center of the ring is aligned with the center of the laminated rotor core, by fitting the projections in attachment holes axially extending in the laminated rotor core, and fitting the ring to an inner peripheral surface of the ring attachment jig, which defines the circular internal space.

Abstract: A rotary electric-machine rotor includes: a rotor core made of magnetic material, the rotor core having magnet holes; magnets disposed in the magnet holes; resin portions disposed in at least part of gaps between the magnet holes and the magnets, the resin portions extending in the axial direction; and end plates disposed adjacent to end surfaces in an axial direction of the rotor core. The end plates are members made of magnetic material. The end plates cover end surfaces of the magnets in the axial direction and end surfaces of the resin portions in the axial direction, and each of the end plates having at least one holes disposed in a position that faces at least one part of the end surfaces of the magnets.

Abstract: A rotor (12) includes i) a stacked body (24) in which a plurality of holed steel plates (28a, 28b) provided with holes (29, 30) punched out of insulation coated steel plates are stacked together, and that includes a plurality of magnet holes (34) each of which is provided by the plurality of holes (29, 30) being connected together in an axial direction, and ii) a plurality of magnets (31n, 31s), at least one of which is arranged in each of the magnet holes (34).

Abstract: A shrink-fitting method for a laminated rotor includes: disposing, coaxially with a laminated rotor core, an annular ring having a through-hole, at an axial end of the laminated rotor core including laminated annular steel sheets and having a through-hole extending in its axial direction; and inserting a rotor shaft into the through-holes of the ring and the laminated rotor core after heating them. A ring attachment jig having a circular internal space, where the ring is disposed, has projections projecting from an axial end surface thereof in the axial direction and arranged along a circumferential direction of the circular internal space. The center of the ring is aligned with the center of the laminated rotor core, by fitting the projections in attachment holes axially extending in the laminated rotor core, and fitting the ring to an inner peripheral surface of the ring attachment jig, which defines the circular internal space.

Abstract: A rotary electric rotor includes a rotor core having a shaft through-hole; a rotor shaft having a male screw portion on its first side; a washer having an annular structure with cutouts elastically deformable in a radial direction, having a washer tapered surface, and having an annular projection portion that extends in an axial direction from an end surface and is fixed to the rotor core in a state of being disposed in a gap between an inner circumferential surface of the shaft through-hole and an outer circumferential surface of the rotor shaft and pressing the inner circumferential surface of the shaft through-hole, the end surface and the washer tapered surface are opposite surfaces of the washer; and a nut having a female screw portion that meshes with the male screw portion and having a nut tapered surface that faces the washer tapered surface.

Abstract: In a rotor manufacturing method, a magnetic body is moved by being pushed by a pusher along a guide surface of a guide portion, and the magnetic body is in a stated of being biased to the guide surface since the magnetic body is urged by a restriction portion. Therefore, the magnetic body can slide reliably between the guide portion and the restriction portion while restricting an insertion posture of the magnetic body. Thus, even if a wall surface of a magnet insertion hole is provided with a protrusion, when the magnetic body slides with the guide surface as a reference, the magnetic body will not abut against the protrusion, and the magnetic body can be reliably loaded into the magnet insertion hole.

Abstract: A winding method of forming a coil by edgewise bending a flat rectangular conductor comprises a step of edgewise bending the rectangular conductor to form edgewise bending portions so that two predetermined two adjacent bent portions are formed so that an outward bulging portion to be generated by edgewise-bending of the flat rectangular conductor is generated in a concentrated manner in a side between the two edgewise bent portions, and the side having the bulging portion constitutes each of a pair of opposite sides of the coil.

Abstract: A shrink-fitting method for a laminated rotor includes: disposing, coaxially with a laminated rotor core, an annular ring having a through-hole, at an axial end of the laminated rotor core including laminated annular steel sheets and having a through-hole extending in its axial direction; and inserting a rotor shaft into the through-holes of the ring and the laminated rotor core after heating them. A ring attachment jig having a circular internal space, where the ring is disposed, has projections projecting from an axial end surface thereof in the axial direction and arranged along a circumferential direction of the circular internal space. The center of the ring is aligned with the center of the laminated rotor core, by fitting the projections in attachment holes axially extending in the laminated rotor core, and fitting the ring to an inner peripheral surface of the ring attachment jig, which defines the circular internal space.

Abstract: A laminated core for a rotary electric machine includes a disc-shaped first laminated block, a disc-shaped second laminated block and an end steel sheet. The first and second laminated block are formed by a plurality of main steel sheets that have a protruding dowel crimping portion and that are laminated together. The second laminated block being front/back reversed with respect to the first laminated block around a reference line of the first laminated block. The end steel sheet has a first dowel insertion hole formed in a position corresponding to the dowel crimping portion of the first laminated block, and a second dowel insertion hole formed in a position symmetrical to the first dowel insertion hole with respect to the reference line of the first laminated block. The end steel sheet is arranged in a position between opposing surfaces of the first laminated block and the second laminated block.

Abstract: A rotor (12) includes i) a stacked body (24) in which a plurality of holed steel plates (28a, 28b) provided with holes (29, 30) punched out of insulation coated steel plates are stacked together, and that includes a plurality of magnet holes (34) each of which is provided by the plurality of holes (29, 30) being connected together in an axial direction, and ii) a plurality of magnets (31n, 31s), at least one of which is arranged in each of the magnet holes (34).

Abstract: In a rotor manufacturing method, a magnetic body is moved by being pushed by a pusher along a guide surface of a guide portion, and the magnetic body is in a stated of being biased to the guide surface since the magnetic body is urged by a restriction portion. Therefore, the magnetic body can slide reliably between the guide portion and the restriction portion while restricting an insertion posture of the magnetic body. Thus, even if a wall surface of a magnet insertion hole is provided with a protrusion, when the magnetic body slides with the guide surface as a reference, the magnetic body will not abut against the protrusion, and the magnetic body can be reliably loaded into the magnet insertion hole.

Abstract: A method for cleaving a plate-shaped workpiece formed with two or more linear recesses into three or more parts includes: a first positioning step of holding the workpiece by a positioning unit in place to position a first linear recess; a first clamping step of clamping one side of the first linear recess by a fixing clamp and the other side by a rotating clamp; a first cleaving step of moving back the positioning unit and rotationally separating the rotating clamp; a second positioning step of releasing the clamps and causing the positioning unit to position a second linear recess; a second clamping step of clamping one side of the second linear recess by the fixing clamp and the other side by the rotating clamp, and a second cleaving step of moving back the positioning unit and rotationally separating the rotating clamp.

Abstract: A rotor includes a stacked body including stackable steel plates each formed by punching multiple magnet insertion holes in a steel plate with an insulation film at regular intervals in the circumferential direction and stacked in the rotational axis extending direction; and magnets disposed in the magnet insertion holes. A peripheral edge of each magnet insertion hole is provided with a projection projecting toward the magnet. The stackable steel plates constituting the stacked body include first and second stackable steel plates having the same shape, and are stacked such that the second stackable steel plate is in at least one of a rotation relation about the rotational axis and a turn-over relation with the first stackable steel plate such that the projections adjacent to each other in the circumferential direction are arranged at positions offset from each other in the stackable steel plate stacking direction.

Abstract: Disclosed are a multilayered wound coil, a stator, and a manufacturing method therefor. The stator is provided with: a stator core comprising laminated steel sheets; and a coil which is wound around a teeth section formed on the stator core and has a plurality of layers formed in the circumferential direction of the stator core. The winding of the coil proceeds in either the radial direction or the circumferential direction of the stator core, whichever direction has fewer adjacent conductors, and doubles back at the end in said direction. This reduces the difference in potential between adjacent conductors, making it possible to ensure insulation between adjacent conductors even with a thinner insulating film.