Method of manufacturing rotational electric machine rotor, and rotational electric machine rotor
A technology of a rotating electrical machine and a manufacturing method, which is applied to the manufacture of rotating electrical machine rotors, the manufacturing method of rotating electrical machine rotors, and the field of rotating electrical machine rotors, which can solve the problems of increased cost, processing cost, and increased number of parts and assembly hours, and achieve cost reduction effect
Active Publication Date: 2019-04-23
TOYOTA JIDOSHA KK
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- Application Information
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Problems solved by technology
Therefore, the rotor shaft is formed into a complicated external shape, which requires machining, hardening of the contact portion, etc., which increases the processing cost, the number of parts, and the number of assembly man-hours.
In addition, when a laminate of magnetic thin plates is used for the rotor core, the cost required for lamination and caulking of a plurality of magnetic thin plates also increases.
Method used
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[0053] Hereinafter, the embodiments according to the present disclosure will be described in detail using the drawings. Hereinafter, the case where the rotor shaft has an outer shape with an octagonal cross section and the rotor core has an octagonal center hole will be described, but this is an example for explanation. In addition to the octagonal shape, it may also be a rotor shaft having an outer shape with a non-circular cross-section and a rotor core having a non-circular center hole. The size, shape, material, number of laminated magnetic sheets, the number of magnetic poles of the rotor, the number of permanent magnets per magnetic pole, etc. described below are examples for explanation, and can be appropriately changed according to the specifications of the rotor of the rotating electrical machine. . In addition, in the following, the same elements are designated by the same reference numerals in all the drawings, and redundant descriptions are omitted.
[0054] figure ...
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A method of manufacturing a rotational electric machine rotor of the invention includes: forming a rotor shaft having a non-circular sectional outer shape; forming a rotor core by stacking a predetermined number of magnetic body thin plates each including a center hole having a non-circular shape corresponding to the non-circular sectional outer shape of the rotor shaft; and forming a protruding part for fixing the rotor core and the rotor shaft to each other by inserting the rotor shaft into the non-circular center hole of the rotor core and squashing the rotor shaft extending out of an axial-direction end face of the rotor core by using a predetermined swaging jig to expand the rotor shaft outward beyond an outer periphery of the non-circular section along the axial-direction end face ofthe rotor core.
Description
technical field [0001] The present disclosure relates to a method of manufacturing a rotating electrical machine rotor and a rotating electrical machine rotor, and more particularly, to a manufacturing method of a rotating electrical machine rotor having a rotor core and a rotor shaft on which magnetic thin plates are laminated, and a rotating electrical machine rotor. Background technique [0002] In a rotary electric machine rotor, a rotor core and a rotor shaft on which magnetic thin plates are laminated need to be fixed against rotation of the rotor. [0003] Patent Document 1 discloses a method in which stable caulking and fixing between a rotor shaft with a flange and a rotor core with a center hole can be obtained even if there is a deviation in the axial dimension of the rotor core which is a laminated body of magnetic thin plates. Methods. Here, the rotor core is passed through the rotor shaft from one end surface side, the one end surface is received by the flange...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H02K15/02H02K1/22
CPCH02K1/22H02K15/02H02K2213/03H02K1/276H02K11/21H02K7/003H02K15/03H02K24/00H02K1/30Y10T29/49009Y10T29/49012Y10T29/53143
Inventor 金原宏高桥圣濑川知弘
Owner TOYOTA JIDOSHA KK