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公开(公告)号：US20070120426A1
公开(公告)日：2007-05-31
申请号：US11562692
申请日：2006-11-22
申请人： Shoji Oiwa , Masafumi Sakamoto , Toru Kobayashi , Masahiko Azegami , Yasuaki Motegi , Takaya Kato , Yasuo Matsuda , Kazuo Onishi , Yuji Enomoto , Naoyuki Kanamori , Tadashi Fukushima
发明人： Shoji Oiwa , Masafumi Sakamoto , Toru Kobayashi , Masahiko Azegami , Yasuaki Motegi , Takaya Kato , Yasuo Matsuda , Kazuo Onishi , Yuji Enomoto , Naoyuki Kanamori , Tadashi Fukushima
CPC分类号： H02K37/18 , H02K1/2713 , H02K16/02 , H02K2201/06 , H02K2213/03
摘要： A stepping motor includes: a stator having main magnetic poles each having small stator teeth on its tip, a core-back portion that connects outer portions of the poles, and windings wound around the poles; and two sets of rotor units that are arranged in an axial direction and face the stator with an air gap therebetween. Each rotor unit consists of two rotor cores that are separated in the axial direction and a magnet sandwiched thereby and magnetized in the axial direction. Each rotor core has small rotor teeth around its outer surface. The rotor cores of each rotor unit are deviated by ½ pitch of the small rotor teeth, and the two rotor units are arranged to make the magnetic polarities of the small rotor teeth of the adjacent two rotor cores identical. A magnet thickness Tm and a rotor core thickness Tc satisfy 0.25≦Tm/Tc≦0.45.
摘要翻译： 步进电动机包括：定子，其顶端具有小的定子齿的主磁极，连接极的外部的芯部部分和绕磁极缠绕的绕组; 以及两组转子单元，其在轴向方向上布置并且与定子面对并具有气隙。 每个转子单元由沿轴向分离的两个转子芯和由其夹在其中并在轴向上被磁化的磁体组成。 每个转子芯在其外表面周围具有小的转子齿。 每个转子单元的转子磁芯偏离小转子齿的1/2间距，并且两个转子单元布置成使相邻两个转子磁芯的小转子齿的磁极相同。 磁体厚度Tm和转子芯厚度Tc满足0.25
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公开(公告)号：US07589440B2
公开(公告)日：2009-09-15
申请号：US11562692
申请日：2006-11-22
申请人： Shoji Oiwa , Masafumi Sakamoto , Toru Kobayashi , Masahiko Azegami , Yasuaki Motegi , Takaya Kato , Yasuo Matsuda , Kazuo Onishi , Naoyuki Kanamori , Tadashi Fukushima
发明人： Shoji Oiwa , Masafumi Sakamoto , Toru Kobayashi , Masahiko Azegami , Yasuaki Motegi , Takaya Kato , Yasuo Matsuda , Kazuo Onishi , Naoyuki Kanamori , Tadashi Fukushima
IPC分类号： H02K37/12
CPC分类号： H02K37/18 , H02K1/2713 , H02K16/02 , H02K2201/06 , H02K2213/03
摘要： A stepping motor includes: a stator having main magnetic poles each having small stator teeth on its tip, a core-back portion that connects outer portions of the poles, and windings wound around the poles; and two sets of rotor units that are arranged in an axial direction and face the stator with an air gap therebetween. Each rotor unit consists of two rotor cores that are separated in the axial direction and a magnet sandwiched thereby and magnetized in the axial direction. Each rotor core has small rotor teeth around its outer surface. The rotor cores of each rotor unit are deviated by ½ pitch of the small rotor teeth, and the two rotor units are arranged to make the magnetic polarities of the small rotor teeth of the adjacent two rotor cores identical. A magnet thickness Tm and a rotor core thickness Tc satisfy 0.25≦Tm/Tc≦0.45.
摘要翻译： 步进电动机包括：定子，其顶端具有小的定子齿的主磁极，连接极的外部的芯部部分和绕磁极缠绕的绕组; 以及两组转子单元，其在轴向方向上布置并且与定子面对并具有气隙。 每个转子单元由沿轴向分离的两个转子芯和由其夹在其中并在轴向上被磁化的磁体组成。 每个转子芯在其外表面周围具有小的转子齿。 每个转子单元的转子磁芯偏离小转子齿的1/2间距，并且两个转子单元布置成使相邻两个转子磁芯的小转子齿的磁极相同。 磁体厚度Tm和转子芯厚度Tc满足0.25
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3.发明授权公开(公告)号：US07779532B2
公开(公告)日：2010-08-24
申请号：US11677886
申请日：2007-02-22
申请人： Masafumi Sakamoto , Toru Kobayashi , Masahiko Azegami , Yasuaki Motegi , Takaya Kato , Shoji Oiwa , Yasuo Matsuda , Kazuo Onishi , Tadashi Fukushima , Norimoto Tanaka
发明人： Masafumi Sakamoto , Toru Kobayashi , Masahiko Azegami , Yasuaki Motegi , Takaya Kato , Shoji Oiwa , Yasuo Matsuda , Kazuo Onishi , Tadashi Fukushima , Norimoto Tanaka
IPC分类号： H02K15/00
CPC分类号： H02K15/03 , H02K37/18 , Y10T29/49009 , Y10T29/49012
摘要： A manufacturing method of a hybrid permanent magnet type electric rotating machine including a stator that is constructed by winding excitation coils around respective main poles. A rotor is constructed by fixing a first rotor unit, which consists of a pair of rotor cores and a magnetic material sandwiched between the rotor cores, and a second rotor unit, which has the same construction as the first rotor unit, to a rotation shaft. The rotor is assembled to the stator to form an assembled body. The magnet material of the first rotor unit is magnetized in the axial direction by a magnetizing flux passing through a half of the assembled body in the axial direction. The magnet material of the second rotor unit is magnetized in the axial direction in an opposite polarity by a magnetizing flux passing through the remaining half of the assembled body in the axial direction.
摘要翻译： 一种混合式永磁式旋转电机的制造方法，其特征在于，具有通过将励磁线圈缠绕在各主极上而构成的定子。 转子通过将由一对转子芯和夹在转子芯之间的磁性材料构成的第一转子单元和与第一转子单元具有相同结构的第二转子单元固定到旋转轴 。 转子组装到定子上以形成组装体。 第一转子单元的磁体材料通过在轴向上穿过组装体的一半的磁化助剂在轴向上被磁化。 第二转子单元的磁体材料通过沿着轴向穿过组合体的剩余一半的磁化助焊剂在相反的极性上沿轴向磁化。
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4.发明申请公开(公告)号：US20070200464A1
公开(公告)日：2007-08-30
申请号：US11677886
申请日：2007-02-22
申请人： Masafumi Sakamoto , Toru Kobayashi , Masahiko Azegami , Yasuaki Motegi , Takaya Kato , Shoji Oiwa , Yasuo Matsuda , Kazuo Onishi , Tadashi Fukushima , Norimoto Tanaka
发明人： Masafumi Sakamoto , Toru Kobayashi , Masahiko Azegami , Yasuaki Motegi , Takaya Kato , Shoji Oiwa , Yasuo Matsuda , Kazuo Onishi , Tadashi Fukushima , Norimoto Tanaka
CPC分类号： H02K15/03 , H02K37/18 , Y10T29/49009 , Y10T29/49012
摘要： A stator is constructed by winding excitation coils around respective main poles. A rotor is constructed by fixing a first rotor unit, which consists of a pair of rotor cores and a magnetic material sandwiched between the rotor cores, and a second rotor unit, which has the same construction as the first rotor unit, to a rotation shaft. The rotor is assembled to the stator to form an assembled body. The magnet material of the first rotor unit is magnetized in the axial direction by a magnetizing flux passing through a half of the assembled body in the axial direction. The magnet material of the second rotor unit is magnetized in the axial direction in an opposite polarity by a magnetizing flux passing through the remaining half of the assembled body in the axial direction.
摘要翻译： 定子通过将励磁线圈缠绕在相应的主极上而构成。 转子通过将由一对转子芯和夹在转子芯之间的磁性材料构成的第一转子单元和与第一转子单元具有相同结构的第二转子单元固定到旋转轴 。 转子组装到定子上以形成组装体。 第一转子单元的磁体材料通过在轴向上穿过组装体的一半的磁化助剂在轴向上被磁化。 第二转子单元的磁体材料通过沿着轴向穿过组合体的剩余一半的磁化助焊剂在相反的极性上沿轴向磁化。
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公开(公告)号：US08138641B2
公开(公告)日：2012-03-20
申请号：US12628325
申请日：2009-12-01
申请人： Masafumi Sakamoto , Yoji Unoki , Toru Kobayashi
发明人： Masafumi Sakamoto , Yoji Unoki , Toru Kobayashi
IPC分类号： H02K37/00
CPC分类号： H02K37/18 , Y10T29/49012
摘要： A permanent-magnet rotary electric machine preferably includes a stator and a rotor opposed thereto via an air gap. The stator includes a stator core having 4m (m is an integer equal to or larger than 2) main poles each having inductor teeth at a tip thereof. The rotor includes two rotor units adjacent to each other in the axial direction. Each rotor unit includes a pair of rotor magnetic poles and a permanent magnet arranged therebetween. The permanent magnets in the rotor are axially magnetized in opposite directions to each other. Each rotor magnetic pole has magnetic teeth on its outer periphery at a regular pitch. The rotor magnetic poles in each rotor unit are arranged such that the magnetic teeth of one rotor magnetic plate are offset by half a pitch from those of the other rotor magnetic pole, and the magnetic teeth of adjacent rotor magnetic poles are aligned with each other in the axial direction. The tooth pitch of the inductor teeth of each stator main pole is different from that of the magnetic teeth of the rotor magnetic pole to generate a fourth harmonic component of a permeance between the stator and the rotor zero.
摘要翻译： 永磁旋转电机优选地包括定子和经由气隙与其相对的转子。 定子包括具有4m（m是等于或大于2的整数）的定子铁心，每个主极在其尖端处具有电感齿。 转子包括在轴向彼此相邻的两个转子单元。 每个转子单元包括一对转子磁极和布置在其间的永磁体。 转子中的永久磁铁在彼此相反的方向轴向磁化。 每个转子磁极在其外周上以规则的间距具有磁齿。 每个转子单元中的转子磁极被布置成使得一个转子磁性板的磁齿偏离另一个转子磁极的一半的间距，并且相邻的转子磁极的磁齿彼此对准 轴向。 每个定子主极的电感齿的齿距不同于转子磁极的磁齿的齿距，以产生定子和转子零点之间的磁导的四次谐波分量。
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公开(公告)号：US06707178B2
公开(公告)日：2004-03-16
申请号：US09999340
申请日：2001-12-03
IPC分类号： H02K700
CPC分类号： H02K37/04
摘要： A stator of the stepping motor of the invention includes an annular shaped yoke portion, a stator iron-core having twelve stator main poles each having a plurality of small teeth on the tip end thereof and stator coils wound in the stator iron-core as three-phase winding. The stator rotatably supports a hybrid type rotor having a cylindrical permanent magnet that is sandwiched between a pair of rotors each having pole teeth around the circumferential surface to be opposite to the small teeth. Second, third, fourth and fifth harmonic components are removed by composing cogging torque of the respective phases by means of the three-phase twelve-pole construction. Any one harmonic component of the cogging torque among the second to fifth harmonic components is independently erased by making a difference between the small teeth pitch and the rotor teeth pitch, thereby the selected harmonic component is doubly erased.
摘要翻译： 本发明的步进电动机的定子包括环形磁轭部分，定子铁芯，其定子铁心具有十二个定子主磁极，每个定子主磁极在其末端具有多个小齿，定子铁芯缠绕在定子铁芯中三个 相绕组。 定子可旋转地支撑具有圆柱形永磁体的混合型转子，该圆柱形永久磁铁被夹在一对转子之间，每个转子在圆周表面周围具有与小齿相对的极齿。 第二，第三，第四和第五谐波分量通过三相十二极结构构成各相的齿槽转矩来去除。 通过使小齿间距与转子齿距之间的差异来独立地消除第二至第五谐波分量之间的齿槽转矩的任何一个谐波分量，从而选择的谐波分量被双重擦除。
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公开(公告)号：US06781337B2
公开(公告)日：2004-08-24
申请号：US10269020
申请日：2002-10-09
IPC分类号： G05B1910
CPC分类号： B25J9/042 , B25J19/0025 , H01R39/64
摘要： In an industrial robot having a plurality of arms, each arm is coupled with other elements, such as a mounting base, another arm, a robotic hand, and revolved by a motion of the revolvable joint. The revolvable joint has a rotary electric connecting structure such as a slip ring or a rotary transformer which can be rotated endlessly. Electric powers for driving motors by which the arms are revolved and control signals for controlling the driving of the motors are supplied or transmitted through the rotary electric connecting structure, so that the arms can be rotated endlessly without twisting or breaking of electric cables.
摘要翻译： 在具有多个臂的工业机器人中，每个臂与诸如安装基座，另一个臂，机器人手的其它元件联接，并且通过可旋转接头的运动而旋转。 可旋转接头具有能够不断旋转的旋转电连接结构，例如滑环或旋转变压器。 通过旋转电连接结构供给或传送用于驱动臂旋转的电动机的电力和用于控制电动机的驱动的控制信号，使得臂可以在不扭曲或断开电缆的情况下不断地旋转。
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公开(公告)号：US06741006B2
公开(公告)日：2004-05-25
申请号：US09851922
申请日：2001-05-10
申请人： Masafumi Sakamoto
发明人： Masafumi Sakamoto
IPC分类号： H02K112
摘要： A magnet type stepping motor which has (1) a stator with three-phase stator windings, and 6m pieces of stator main pole arranged side by side, where m is an integer and ≧1, the stator windings of one phase are wound around every two stator main poles among the 6m pieces of the stator main pole, wherein when the stator windings of one phase are excited with a direct current, m pieces of N pole and M pieces of S pole are formed alternately on the 6m pieces of stator main pole, and (2) a rotor of a cylindrical permanent magnet magnetized in the circumferential direction to form Z/2 pieces of N pole and Z/2 pieces of S pole alternately, where Z is the number of rotor poles.
摘要翻译： 一种磁铁式步进电动机，其具有（1）具有三相定子绕组的定子和并排布置的6m个定子主极，其中m为整数，> = 1，一相的定子绕组缠绕 定子主极6m之间的每两个定子主极，其中当一个相的定子绕组被直流激励时，在6m定子上交替地形成m个N极和M个S极， 主极，（2）沿圆周方向磁化的圆筒形永磁体的转子，交替地形成Z / 2个N极和Z / 2个S极，其中Z是转子极数。
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公开(公告)号：US06731027B2
公开(公告)日：2004-05-04
申请号：US10082000
申请日：2002-02-22
IPC分类号： H02K3714
CPC分类号： H02K37/18
摘要： A three-phase hybrid type stepping motor of the present invention comprises a stator, a rotor arranged concentrically with the stator and with an air gap therebetween, six stator poles extending radially and formed at a regular pitch on the inner peripheral surface of an annular stator yoke, each of the stator poles having a plurality of small stator teeth at the tip end thereof, the rotor having two splitted rotor elements and a permanent magnet held therebetween and magnetized so as to form N and S poles in the axial direction thereof, fifty of small rotor teeth formed at a regular pitch on the outer peripheral surface of each of the rotor elements, the two splitted rotor elements being shifted from each other in angular position by a ½ pitch of the small rotor teeth, wherein a permeance distribution of the small stator teeth is a vernier pitch balanced by a six or three order harmonic wave, and a ratio of the width of the pole tooth to the rotor teeth pitch is set to 0.35-0.45.
摘要翻译： 本发明的三相混合型步进电动机包括一个定子，一个与定子同心设置的转子和一个气隙，六个定子极径向延伸并以一定间距形成在环形定子的内周面上 磁轭，每个定子极在其顶端具有多个小的定子齿，转子具有两个分离的转子元件和永久磁铁，并被磁化以在其轴向上形成N和S极，五十 在每个转子元件的外周表面上以规则间距形成的小转子齿，两个分离的转子元件在角位置彼此偏移小转子齿的1/2间距，其中， 小定子齿是通过六阶或三阶谐波平衡的游标间距，极齿与转子齿间距的比率设定为0.35-0.45。
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公开(公告)号：US06329729B1
公开(公告)日：2001-12-11
申请号：US09640138
申请日：2000-08-16
申请人： Masafumi Sakamoto
发明人： Masafumi Sakamoto
IPC分类号： H02K3700
摘要： A magnet type stepping motor which has (1) a stator with three-phase stator windings, and 6m pieces of stator main pole arranged side by side, where m is an integer and ≧1, the stator windings of one phase are wound around every two stator main poles among the 6m pieces of the stator main pole, wherein when the stator windings of one phase are excited with a direct current, m pieces of N pole and M pieces of S pole are formed alternately on the 6m pieces of stator main pole, and (2) a rotor of a cylindrical permanent magnet magnetized in the circumferential direction to form Z/2 pieces of N pole and Z/2 pieces of S pole alternately, where Z is the number of rotor poles.
摘要翻译： 一种磁铁式步进电动机，其具有（1）具有三相定子绕组的定子和并排布置的6m个定子主极，其中m为整数，> = 1，一相的定子绕组缠绕 定子主极6m之间的每两个定子主极，其中当一个相的定子绕组被直流激励时，在6m定子上交替地形成m个N极和M个S极， 主极，（2）沿圆周方向磁化的圆筒形永磁体的转子，交替地形成Z / 2个N极和Z / 2个S极，其中Z是转子极数。
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