Apparatus for manufacturing stator, method for manufacturing stator, and stator
AssigneeNHK Spring Co., Ltd.
InventorsYohei KAMEDA, Yu YODA
Life of this patent
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Abstract
An apparatus for manufacturing a stator that includes a stator core, in which a plurality of core pieces formed of electrical steel sheets are stacked, and coils inserted into slots of the stator core. The apparatus for manufacturing a stator includes a pair of coil holding jigs and an activation mechanism. The coil holding jigs hold, of the coils disposed in the slots, coil ends projecting from both of axial direction end portions of the stator core. The activation mechanism rotates at least one of the pair of coil holding jigs holding the coil ends in a circumferential direction of the stator, in order to form skew in the stator.
Claims12
An apparatus for manufacturing a stator including a stator core in which a plurality of core pieces formed of electrical steel sheets are stacked and coils inserted into slots of the stator core, the apparatus comprising:
- a pair of coil holding jigs that hold, of the coils disposed in the slots, coil ends projecting from both axial direction end portions of the stator core;
- and
- an activation mechanism for forming a skew in the stator, the activation mechanism rotating at least one of the pair of coil holding jigs holding the coil ends in a circumferential direction of the stator.
A method for manufacturing a stator, comprising:
- forming a stack body in which a plurality of core pieces formed of electrical steel sheets are stacked;
- inserting coils into slots of the stack body;
- holding coil ends of the coils inserted into the slots with a coil holding jig, the coil ends projecting from both of axial direction end portions of the stack body;
- and
- forming a skew in the stack body and the coils, including rotating the coil holding jig.
A stator, comprising:
- a stator core in which a plurality of core pieces formed of electrical steel sheets are stacked;
- and
- flat wire coils inserted into slots of the stator core, wherein:
- each slot of the stator core is formed substantially in a “V” shape that extends in an axial direction of the stator core at an axial direction central portion of the stator core, regions of the slot that are adjacent to both axial direction ends of the axial direction central portion being slanted to extend in directions intersecting the axial direction, and
- at least three of the core pieces structure the axial direction central portion.
Dependencies are inferred from the claim text.