Title:
LAMINATED IRON CORE MANUFACTURING METHOD AND LAMINATED IRON CORE MANUFACTURING DEVICE FOR ROTARY ELECTRIC MACHINE AND ROTARY ELECTRIC MACHINE
Document Type and Number:
Japanese Patent JP2021016253
Kind Code:
A
Abstract:
To improve motor efficiency and suppress cogging torque or torque ripple.SOLUTION: In a laminated iron core manufacturing method for a rotary electric machine, before a step of punching a plate-shaped rotor core element 21 from a strip-shaped electromagnetic steel plate 4 formed by rolling by a press mechanism 51,..., in a second region 42 inside a first region 41 for punching the plate-shaped rotor core element of the strip-shaped electromagnetic steel plate 4, a plurality of plate-shaped stator core elements 11 are punched out in a punching step such that the radial extension direction of the rotating electric machine of a teeth portion 11T becomes the same.SELECTED DRAWING: Figure 2
Inventors:
KOZUKA KENTARO
NAKANO SEIJI
NAKANO MASATSUGU
YOSHIOKA SHOTA
NAKANO SEIJI
NAKANO MASATSUGU
YOSHIOKA SHOTA
Application Number:
JP2019129848A
Publication Date:
February 12, 2021
Filing Date:
July 12, 2019
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
H02K15/02; H02K1/18
Domestic Patent References:
| JP2013226013A | 2013-10-31 | |||
| JP2002186227A | 2002-06-28 | |||
| JP2010075027A | 2010-04-02 | |||
| JP2007028799A | 2007-02-01 | |||
| JP2013013189A | 2013-01-17 |
Attorney, Agent or Firm:
Patent Business Corporation Parumo Patent Office
Masuo Oiwa
Takenaka Ikuo
Keigo Murakami
Kenji Yoshizawa
Masuo Oiwa
Takenaka Ikuo
Keigo Murakami
Kenji Yoshizawa