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    Multi-phase PM-type stepping motor
    2.
    发明授权
    Multi-phase PM-type stepping motor 失效
    多相PM型步进电机

    公开(公告)号：US6153953A

    公开(公告)日：2000-11-28

    申请号：US129701

    申请日：1998-08-05

    申请人： Kouki Isozaki ,  Naotugu Sato ,  Yuuichi Tsuda

    发明人： Kouki Isozaki ,  Naotugu Sato ,  Yuuichi Tsuda

    IPC分类号： H02K37/14 ,  H02P8/14 ,  H02K37/00 ,  H02K1/22 ,  H02K7/20 ,  H02K16/00 ,  H02P8/00

    CPC分类号： H02P8/14 ,  H02K37/14

    摘要： A multi-phase PM-type stepping motor comprising: a rotor constituted by a cylindrical permanent magnet with N poles and S poles magnetized alternately on an outer circumferential surface of the rotor; stator cores having teeth arranged in opposition to the N poles or the S poles on the outer circumferential surface of the rotor through a predetermined air gap; and excitation coils wound in the stator cores and for magnetizing the stator cores to thereby rotate the rotor; wherein, when the number of the stator cores is represented by n (n is an odd number not smaller than 5), and the magnetization pitch angle of the permanent magnet is represented by P, the teeth of the stator cores are shifted from each other by an angle of 2P/n.

    摘要翻译： 一种多相PM型步进电动机，包括：转子，其由具有N极的圆柱形永磁体和在所述转子的外周表面上交替磁化的S极构成; 定子铁芯，其具有通过预定的气隙在转子的外周面上与N极或S极相对配置的齿; 励磁线圈缠绕在定子铁心中并使定子铁心磁化，从而使转子旋转; 其中，当定子铁芯的数目由n（n是不小于5的奇数）表示时，并且永久磁铁的磁化倾斜角由P表示时，定子铁心的齿彼此偏移 以2P / n的角度。

    Multi-phase outer-type PM stepping motor
    3.
    发明授权
    Multi-phase outer-type PM stepping motor 失效
    多相外型PM步进电机

    公开(公告)号：US06259176B1

    公开(公告)日：2001-07-10

    申请号：US09238917

    申请日：1999-01-28

    申请人： Kouki Isozaki ,  Naotugu Sato ,  Yuuichi Tsuda ,  Junji Rokunohe ,  Ayako Shimura

    发明人： Kouki Isozaki ,  Naotugu Sato ,  Yuuichi Tsuda ,  Junji Rokunohe ,  Ayako Shimura

    IPC分类号： H02K3700

    CPC分类号： H02K37/12

    摘要： A multi-phase outer-type permanent magnet stepping motor including a rotor constituted by a cylindrical permanent magnet assembly in which N (north) and S (south) poles are magnetized alternately on an inner circumferential surface of the rotor. Stator cores respectively having pole teeth are disposed in opposition to the N or S poles of the rotor through a predetermined gap. Further, excitation coils are wound in the stator cores for magnetizing the stator cores to thereby rotate the rotor such that, when a number of the stator cores is 3 and the magnetization pitch of the permanent magnet assembly is P, pole teeth of the stator cores are arranged so that the pole teeth of one stator core is shifted by an angle of 2P/3 from the pole teeth of an adjacent stator core.

    摘要翻译： 一种多相外型永磁体步进电动机，其包括由N（北）和S（南）磁极在转子的内周面上交替磁化的圆柱形永久磁铁组件构成的转子。 分别具有极齿的定子芯通过预定间隙设置成与转子的N极或S极相对。 此外，励磁线圈缠绕在用于磁化定子铁心的定子铁芯中，从而使转子旋转，使得当多个定子铁芯为3，永磁体组件的磁化间距为P时，定子铁芯的极齿 被布置成使得一个定子芯的极齿与相邻的定子芯的极齿相差2P / 3的角度。

    Indexable insert and cutting tool having indexable insert
    4.
    发明授权
    Indexable insert and cutting tool having indexable insert 有权
    可转位刀片和可转位刀片

    公开(公告)号：US06244789B1

    公开(公告)日：2001-06-12

    申请号：US09387346

    申请日：1999-08-31

    申请人： Yuuichi Tsuda

    发明人： Yuuichi Tsuda

    IPC分类号： B23B2702

    CPC分类号： B23B27/141 ,  B23B27/007 ,  B23B27/16 ,  B23B2220/04 ,  B23B2270/20 ,  Y10T407/2282 ,  Y10T407/2288 ,  Y10T407/235 ,  Y10T407/245

    摘要： The indexable insert of the present invention has a cutting edge at the end of a stick-shaped portion projecting from a tool base. The base is shaped to ensure effective clamping, thereby avoiding chatter and backlash. A cutting edge and a rake face are provided at the end of the stick-shaped portion, which is also provided with a side relief face so that chips cut from the workpiece are smoothly carried away. The cutting edge extends sideways beyond the side relief face so that the insert can effectively cut the walls of small and deep holes.

    摘要翻译： 本发明的可转位插入件在从工具基座突出的棒状部分的端部具有切割刃。 基座的形状可确保有效的夹紧，从而避免颤动和间隙。 在棒状部分的端部设置切削刃和前刀面，该切削刃和前刀面也设置有侧面浮雕面，使得从工件切割的切屑被平滑地带走。 切割边缘侧向延伸超过侧面浮雕面，使得插入件可以有效地切割小孔和深孔的壁。