Method for coupling a shaft with a hub of a disk device and a coupled body resulting therefrom
    1.
    发明公开
    Method for coupling a shaft with a hub of a disk device and a coupled body resulting therefrom 有权
    对于一个轴连接到盘旋转单元的轮毂的制造方法

    公开(公告)号:EP1074753A1

    公开(公告)日:2001-02-07

    申请号:EP00116214.8

    申请日:2000-08-03

    申请人: Hitachi, Ltd.

    IPC分类号: F16D1/072

    CPC分类号: F16D1/072 B21K25/00

    摘要: A outer circumferential part of a body to be coupled having an annular groove 31 formed in the outer periphery of a shaft 1 is press-fitted into the inner circumferential part of a coupling hole 21 in the central portion of a hub 2, the vicinity of the hole in the end of the hub is plastic-deformed over the whole periphery, and material for the hub is caused to plastic-flow so as to bury a recess of the shaft, and to apply compression stress to the shaft, whereby a coupling force between a thin hub and a small diameter shaft is obtained by shearing force and compressing force of the material for the hub.

    Manufacturing method of a rotor core
    5.
    发明公开
    Manufacturing method of a rotor core 有权
    Herstellungsverfahren eines Rotorkerns

    公开(公告)号:EP1471622A1

    公开(公告)日:2004-10-27

    申请号:EP04009113.4

    申请日:2004-04-16

    申请人: Hitachi, Ltd.

    IPC分类号: H02K15/02 H02K21/04 B21K1/30

    摘要: In order to realize a method of forming a rotor core (2) that improves the productivity and enhances the product accuracy, a forming method of a rotor that is equipped with both permanent-magnet fastener (2d) on the inner perimetric end of the magnetic pole claw (2a, 20a) of the rotor core and tapered surface (2f) on the outer perimetric end on one end of the magnetic pole claw in the circumferential direction. By constraining the inner perimetric surface of the magnetic pole claw by a die (30) and applying a forming pressure in the radial direction, the tapered surface on the outer perimetric end of the magnetic pole claw and permanent-magnet fastener on the inner perimetric end can be formed at the same time and a rotor core (2) with high product accuracy and mass-productivity is realized.

    摘要翻译: 该方法包括通过模具约束中间坯料的磁极爪(2a,2g)的内周表面,并且在磁极爪的径向上施加成形压力。 锥形表面(2f)和永磁体紧固件(2d)分别形成在每个磁极爪的外周端和内周端(2c)上。 磁极爪在中间坯料的圆周上以相同的同轴方向突出。 发电机的制造方法也包括独立权利要求。