Abstract:
Provided is a method for fabricating a molded stator of a rotary electric machine, the method comprising: a lamination step of laminating a plurality of core sheets each having a plurality of core pieces connected to one joining portion via bridge portions, thereby forming a divided-laminated-core group structure; a winding step of winding a coil on a teeth portion of each divided laminated core of the divided-laminated-core group structure; a cutting step of cutting the bridge portions, thereby separating the divided laminated cores wound with the coils; a temporary fixing step of temporarily fixing the divided laminated cores circularly arranged to form a stator; and a molding step of placing, in a mold, the stator into which a mold mandrel is inserted along the inner circumferential surface, and molding an outer circumferential surface of the stator with resin.
Abstract:
Plate materials (37P) of an extended portion (37) are bonded to one another by substantially V-like crimped portions (50) in which center portions (50c) in a longitudinal direction (Y) protrude toward a base portion (38) while both end portions (50a) and (50b) in the longitudinal direction (Y) are being coupled to the plate materials (37P). Moreover, on a peripheral edge portion (60) in a lateral direction (X) of the crimped portion (50) of the plate material (37P) arranged on an outermost side in a direction away from the base portion (38) among the plurality of plate materials (37P) of the extended portion (37), an opening portion (53) that reaches an aperture (52) of the crimped portion (50) from the peripheral edge portion (60) is formed.
Abstract:
PROBLEM TO BE SOLVED: To laminate and bind a plurality of core plates with a strong holding force and high parallelism without a gap.SOLUTION: A core is constituted by laminating a plurality of core plates. The core plates are each provided with a binding part for binding into a laminate state. The binding part is provided with a fixed piece 24 raised and formed in a laminating direction, a passage hole 25 for passing a fixed piece 24 of an adjacent core plate, a reception part 26 to be bound to and held by the adjacent core plate by bending the fixed piece 24 run through the passage hole 25, and an opening 27 in which the fixed piece 24 bent on the reception part 26 of the other core plate is accommodated so as to avoid interference with the fixed piece 24.
Abstract:
PROBLEM TO BE SOLVED: To provide a transfer device capable of preventing scratch from occurring in a core piece and preventing quality of a product from being reduced when the core piece is transferred on a mounting table due to rotation of a die to form a laminate core.SOLUTION: A transfer device includes a mounting table 15 provided inside of a shaft hole of a die 12 that can be rotated around an axis line. In the transfer device, a punched core pieces Wa is transferred on the mounting table 15 by the rotation of the die 12. In addition, the transfer device includes a drive mechanism 25 that integrally rotates the die 12 and the mounting table 15 around the axis line of the die 12.