Method of manufacturing armature of rotary electric machine
First Claim
1. A method of manufacturing an armature having a plurality of conductors inserted into slots formed around an outer periphery of an armature core, the method comprising:
- forming a plurality of conductors, each conductor having an in-slot portion and a pair of side portions extending straight from both ends of the in-slot portion, a bending portion having a thickness smaller than a thickness of the in-slot portion being formed between the in-slot portion and the side portion so that the conductor is easily bent at the bending portion;
inserting conductors into the slots;
bending the side portions of the conductors at the bending portions at substantially right angle so that the side portions are positioned substantially in parallel to axial end surfaces of the armature core; and
skewing the side portions of the conductors by a predetermined angle relative to a radial line connecting a center of the slot and a center of the armature, wherein;
the step of bending and the step of skewing are performed simultaneously after all of the conductors are inserted into the slots.
1 Assignment
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Accused Products
Abstract
An armature of a rotary electric machine composed of an armature core, an armature winding and a shaft is manufactured in the following manner. A conductor bar including plural conductors connected in line is formed, and each conductor is cut out from the conductor bar. The conductor in a straight shape is inserted into each slot of the armature core, and then both side portions of the conductor are bent at substantially right angle so that the side portions are positioned along axial end surfaces of the armature core. The side portions are further skewed and electrically connected to form the armature winding. An outer surface of the side portions circularly arranged on the axial end surface of the armature core is used as a commutator surface.
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Citations
5 Claims
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1. A method of manufacturing an armature having a plurality of conductors inserted into slots formed around an outer periphery of an armature core, the method comprising:
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forming a plurality of conductors, each conductor having an in-slot portion and a pair of side portions extending straight from both ends of the in-slot portion, a bending portion having a thickness smaller than a thickness of the in-slot portion being formed between the in-slot portion and the side portion so that the conductor is easily bent at the bending portion; inserting conductors into the slots; bending the side portions of the conductors at the bending portions at substantially right angle so that the side portions are positioned substantially in parallel to axial end surfaces of the armature core; and skewing the side portions of the conductors by a predetermined angle relative to a radial line connecting a center of the slot and a center of the armature, wherein; the step of bending and the step of skewing are performed simultaneously after all of the conductors are inserted into the slots. - View Dependent Claims (2, 3, 4, 5)
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Specification