Method of manufacturing laminated core
First Claim
1. A method of manufacturing a laminated stator core, comprising the steps of:
- forming a band-shaped yoke core piece having a shape that a yoke of the laminated stator core is developed in a straight line and having concave connection portions in the inner circumferential edge thereof by punching a metal plate;
forming a laminated yoke body by winding and laminating the band-shaped yoke core piece in a spiral shape and coupling the laminated band-shaped yoke core piece using a caulking procedure;
forming a magnetic core piece having a convex connection portion at the base end thereof by punching a metal plate;
forming a laminated magnetic body by laminating and coupling a predetermined number of the magnetic core pieces to each other using a caulking procedure; and
coupling the laminated yoke body and the laminated magnetic body to each other by winding a coil around the laminated magnetic body and then inserting the convex connection portions into the concave connection portions,wherein the band-shaped yoke core piece formed in forming the band-shaped yoke core piece has a shape that a yoke of the laminated stator core is developed in a straight line and concave connection portions and arc-shaped caulkingportions having a plane shape curved in a winding direction are arranged with a constant pitch in the inner circumferential edge thereof,wherein in forming the laminated yoke body, caulking tongues of the arc-shaped caulking portions are inserted into caulking grooves of the arc-shaped caulking portions in a lower layer while winding and laminating the band-shaped yoke core piece in a spiral shape.
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Accused Products
Abstract
A method of manufacturing a laminated stator core includes: forming a band-shaped yoke core piece having a shape that a yoke of the laminated stator core is developed in a straight line and having concave connection portions in the inner circumferential edge thereof by punching a metal plate; forming a laminated yoke body by winding and laminating the band-shaped yoke core piece in a spiral shape and coupling the laminated band-shaped yoke core piece in a caulking manner; forming a magnetic core piece having a convex connection portion at the base end thereof by punching a metal plate; forming a laminated magnetic body by laminating and coupling a predetermined number of the magnetic core pieces to each other in a caulking manner; and coupling the laminated yoke body and the laminated magnetic body to each other by winding a coil around the laminated magnetic body and then inserting the convex connection portions into the concave connection portions.
46 Citations
11 Claims
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1. A method of manufacturing a laminated stator core, comprising the steps of:
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forming a band-shaped yoke core piece having a shape that a yoke of the laminated stator core is developed in a straight line and having concave connection portions in the inner circumferential edge thereof by punching a metal plate; forming a laminated yoke body by winding and laminating the band-shaped yoke core piece in a spiral shape and coupling the laminated band-shaped yoke core piece using a caulking procedure; forming a magnetic core piece having a convex connection portion at the base end thereof by punching a metal plate; forming a laminated magnetic body by laminating and coupling a predetermined number of the magnetic core pieces to each other using a caulking procedure; and coupling the laminated yoke body and the laminated magnetic body to each other by winding a coil around the laminated magnetic body and then inserting the convex connection portions into the concave connection portions, wherein the band-shaped yoke core piece formed in forming the band-shaped yoke core piece has a shape that a yoke of the laminated stator core is developed in a straight line and concave connection portions and arc-shaped caulking portions having a plane shape curved in a winding direction are arranged with a constant pitch in the inner circumferential edge thereof, wherein in forming the laminated yoke body, caulking tongues of the arc-shaped caulking portions are inserted into caulking grooves of the arc-shaped caulking portions in a lower layer while winding and laminating the band-shaped yoke core piece in a spiral shape. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification