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公开(公告)号：US4374337A
公开(公告)日：1983-02-15
申请号：US233963
申请日：1981-02-12
申请人： Yoshinori Kohzai , Shigeaki Oyama , Tatsuo Koyama
发明人： Yoshinori Kohzai , Shigeaki Oyama , Tatsuo Koyama
摘要： A direct current motor having E-shaped interpoles, each of the E-shaped interpoles comprising interconnecting members which are made of a non-magnetic material having rigidity and which are tightly and irremovably inserted in gaps between a center pole and side poles of the E-shaped interpole. In the direct current motor according to the present invention, the side poles are mechanically interconnected to the center pole, so that noises generated by the vibration of the side poles are greatly reduced.
摘要翻译： 具有E形间极的直流电动机，每个E形间极包括互连构件，互连构件由具有刚性的非磁性材料制成，并且紧固且不可移除地插入在E的中心极和侧极之间的间隙中 形极点 在根据本发明的直流电动机中，侧极与中心极机械地互连，从而大大减小了由侧极的振动产生的噪音。
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公开(公告)号：US4217513A
公开(公告)日：1980-08-12
申请号：US846428
申请日：1977-10-28
申请人： Yoshinori Kohzai , Shigeaki Oyama
发明人： Yoshinori Kohzai , Shigeaki Oyama
摘要： Disclosed is a direct current motor which comprises an armature, provided with armature windings thereon, and a plurality of field magnet devices, each of the field magnet devices being divided into three parts along the rotational direction of the armature. The parts are a main pole, which consists of a permanent magnet or an electromagnet activated by field windings wound thereon and which is disposed at a central portion of the field magnet device, and a pair of auxiliary poles, each of which consists of a permanent magnet. One of the auxiliary poles is disposed at one end of the main pole and the other auxiliary pole is disposed at the other end of the main pole. The permeability of the auxiliary poles is selected to be smaller than that of the main pole, and the polarity of the auxiliary poles is selected to be the same as that of the main pole.Since the permeability of the auxiliary poles is small, magnetic flux generated by the armature current is very small at a position adjacent to each end of the field magnet devices and is substantially equal to zero at a central position adjacent to two field magnet devices (on the geometric neutral axis). Consequently, the displacement of the electrically neutral axis caused by the armature reaction can be prevented and, as a result, degradation of the commutating characteristics does not occur.
摘要翻译： 公开了一种直流电动机，其包括在其上设置有电枢绕组的电枢和多个励磁装置，每个励磁装置沿着电枢的旋转方向被分成三部分。 这些部件是主极，其由永磁体或由励磁绕组激励的电磁体组成，并且设置在励磁装置的中心部分，以及一对辅助极，每个辅助极由永久磁铁 磁铁。 辅助极之一设置在主极的一端，另一个辅助极设置在主极的另一端。 辅助极的磁导率选择为小于主极的磁导率，辅助极的极性选择为与主极相同。 由于辅助极的磁导率小，所以在与磁场磁体装置的各端相邻的位置处由电枢电流产生的磁通量非常小，并且在与两个磁场磁体装置相邻的中心位置处基本上等于零（在 几何中性轴）。 因此，可以防止由电枢反应引起的电中性轴的位移，结果不会发生换向特性的劣化。
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公开(公告)号：US4439703A
公开(公告)日：1984-03-27
申请号：US95985
申请日：1979-11-20
申请人： Yoshinori Kohzai , Shigeaki Oyama
发明人： Yoshinori Kohzai , Shigeaki Oyama
摘要： A direct current motor comprising: a yoke; an armature; a plurality of main magnetic poles equidistantly spaced around the inner circumference of the yoke, and each of which has a wide portion and a narrow portion, the air-gap between the armature and the main magnetic poles being narrow at the center and ends of the wide portion, and at the center of the narrow portion, and being wide at the intermediate of the wide portion, and at the ends of the narrow portion, and a plurality of interpoles, such as E-shaped interpoles, which are disposed at positions located between the adjacent narrow portions of the main magnetic poles.
摘要翻译： 一种直流电动机，包括：轭; 电枢 围绕磁轭的内周等距离地间隔开的多个主磁极，并且每个主磁极具有宽的部分和较窄的部分，电枢和主磁极之间的气隙在中心和末端处窄 宽的部分，并且在窄部分的中心处，并且在宽部分的中间处，在窄部分的端部处是宽的，以及设置在位置处的多个间极，例如E形间极 位于主磁极的相邻窄部之间。
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公开(公告)号：US4338535A
公开(公告)日：1982-07-06
申请号：US129834
申请日：1980-03-13
摘要： A direct current motor used, for example, in a machine tool, comprising an armature, a plurality of main magnetic poles disposed around the armature having field windings wound thereon, and a plurality of E-shaped interpoles disposed at the intermediate position along the outer circumference of said armature between the adjacent main magnetic poles, each of the E-shaped interpoles consisting of a center pole to which an interpole winding is wound and two side poles, and the width of the gap between the outer circumference of the armature and the end surface of each of the side poles increases from the portion of the gap which is remote from the center pole to the portion of the gap which is adjacent to the center pole.In the DC motor according to the present invention, the linearity of the magnetic flux used for commutation is ensured in a wide range of the armature current, and, therefore, commutating characteristics of the E-shaped interpoles is improved.
摘要翻译： 例如在机床中使用的直流电动机，包括电枢，设置在电枢周围的多个主磁极，磁场绕组缠绕在其上，并且沿着外部设置在中间位置处的多个E形间极 相邻主磁极之间的所述电枢的周长，每个E形间极由缠绕有极间绕组的中心极和两个侧极组成，并且电枢的外周与电枢的外周之间的间隙的宽度 每个侧极的端面从间隙的远离中心极的部分增加到与中心极相邻的间隙的部分。 在根据本发明的直流电动机中，在电枢电流的宽范围内确保用于换向的磁通线性，因此提高了E形间极的换向特性。
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公开(公告)号：US4307312A
公开(公告)日：1981-12-22
申请号：US118769
申请日：1980-02-05
申请人： Yoshinori Kohzai , Shigeaki Oyama
发明人： Yoshinori Kohzai , Shigeaki Oyama
摘要： A direct current motor used, for example, in a machine tool, comprising an armature, n main magnetic poles disposed around the armature, each of the main magnetic poles consisting of a pole core on which a field winding is provided and a pole piece extending along the outer circumference of the armature, and n/2 E-shaped interpoles disposed at the intermediate position along the outer circumference of the armature between the adjacent main magnetic poles, and at the central axis of the armature, the angle spanning from the direct axis, which is electrically perpendicular to the interpole axis, to an end portion of a pole piece of a main magnetic pole is unequal to that from the direct axis to the other end portion of the pole piece of the main magnetic pole.Since the number of the E-shaped interpoles is decreased by half, the direct current motor according to the present invention has simple structure and high torque, and the heat generated by the interpoles is relatively decreased.
摘要翻译： 例如在机床中使用的直流电动机，包括电枢，设置在电枢周围的n个主磁极，每个主磁极由设置有励磁绕组的磁极铁芯组成，极片延伸 沿着电枢的外周，以及设置在相邻主磁极之间的电枢的外周的中间位置处的n / 2个E形间极，并且在电枢的中心轴处，从直接 电极垂直于间极轴的轴线与主磁极的极片的端部不等于从主磁极的极靴到另一端部的直线轴的端部。 由于E形间极的数量减少了一半，所以根据本发明的直流电动机具有结构简单，扭矩大的优点，并且由间极产生的热量相对降低。
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公开(公告)号：US4220882A
公开(公告)日：1980-09-02
申请号：US884586
申请日：1978-03-08
申请人： Yoshinori Kohzai , Shigeaki Oyama
发明人： Yoshinori Kohzai , Shigeaki Oyama
CPC分类号： H02K23/24
摘要： A direct current motor having interpoles mounted therein. The motor comprises a circular-shaped yoke, two main magnetic poles equidistantly disposed inside of the yoke and with their polarities different from each other, an armature, having armature windings wound thereon, which is actuated by an electromotive force caused by the main magnetic poles and which is rotated in the magnetic field generated by the main magnetic poles, and interpoles which are disposed at positions located between the two main magnetic poles so as to face the armature windings. Each of the interpoles comprises three small poles which are disposed inside of the yoke and are magnetically insulated from the yoke. As a result of this construction magnetic circuits are formed between the adjacent two small poles of each interpole and the armature.
摘要翻译： 具有安装在其中的间极的直流电动机。 电动机包括圆形磁轭，两个主磁极等距配置在磁轭内部并具有彼此极性不同的电枢，电枢绕组缠绕在其上，电枢绕组由主磁极引起的电动势驱动 并且在由主磁极产生的磁场中旋转，并且设置在位于两个主磁极之间的位置以面对电枢绕组的间极。 每个间极包括设置在轭内部并与磁轭磁绝缘的三个小极。 作为这种结构的结果，在每个极间的相邻两个小极和电枢之间形成磁路。
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公开(公告)号：US4181875A
公开(公告)日：1980-01-01
申请号：US846429
申请日：1977-10-28
申请人： Yoshinori Kohzai , Shigeki Kawada , Shigeaki Oyama
发明人： Yoshinori Kohzai , Shigeki Kawada , Shigeaki Oyama
摘要： A drive circuit for a DC motor provided with an armature having an armature winding and a plurality of field poles. The field poles are each composed of a main pole excited by a field winding and an auxiliary pole formed with a permanent magnet of the same polarity as the main pole. An armature current is shunted to supply a field current to the field winding connected in series to the armature. The field current remains zero until the armature current reaches a predetermined value, and increases with an increase in the armature current after the latter exceeds the predetermined value. As a result of this, in the region in which the armature current is small, that is, in the high-speed region of the motor, a torque larger than that of a DC series motor is obtained, and in the region in which the armature current is large, that is, in the low-speed region of the motor, a torque larger than that of a permanent magnet type DC motor is provided.
摘要翻译： 一种用于直流电动机的驱动电路，其具有电枢绕组和多个场磁极。 场磁极各自由励磁绕组激励的主极和由与主极相同极性的永磁体形成的辅助极组成。 电枢电流被分流以向与电枢串联连接的励磁绕组提供励磁电流。 直到电枢电流达到预定值为止，励磁电流保持为零，并且随着电枢电流超过预定值后电枢电流的增加而增加。 其结果是，在电枢电流较小的区域，即在电动机的高速区域中，获得比直流串联电动机大的转矩，并且在 电枢电流大，即在电动机的低速区域中，提供大于永久磁铁型直流电动机的转矩。
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公开(公告)号：US4745320A
公开(公告)日：1988-05-17
申请号：US395012
申请日：1982-06-24
CPC分类号： H02K1/16
摘要： An induction motor has a stator formed by inserting and holding piled steel plates (12) between end plates (11a, 11b) and welding support bars (13) consisting of nonmagnetic metal along the external surface of said piled steel plates.
摘要翻译： PCT No.PCT / JP81 / 00309 Sec。 371日期1982年6月24日 102（e）日期1982年6月24日PCT提交1981年10月28日PCT公布。 出版物WO82 / 01793 日期：1982年5月27日。感应电动机具有定子，其通过在端板（11a，11b）之间插入并保持堆叠钢板（12）和沿着所述堆叠钢板的外表面由非磁性金属构成的焊接支撑杆（13） 盘子
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公开(公告)号：US4268781A
公开(公告)日：1981-05-19
申请号：US850793
申请日：1977-11-11
CPC分类号： H02P7/293 , Y10S388/903 , Y10S388/917
摘要： An actual speed N of a DC motor and an armature current Ia are detected to detect the motor output N.times.Ia. The motor speed is changed so that the detected motor output may not exceed a predetermined value. The spark generation of the motor brush is prevented when an over load is applied to the motor.
摘要翻译： 检测直流电动机的实际速度N和电枢电流Ia，以检测电动机输出Nx1a。 改变电动机速度，使得检测到的电动机输出不会超过预定值。 当对电动机施加过载时，防止电动机电刷产生火花。
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公开(公告)号：US4580471A
公开(公告)日：1986-04-08
申请号：US494328
申请日：1983-05-13
CPC分类号： B23Q11/127 , B23Q5/10 , H02K9/00 , H02K9/04 , Y10T408/95 , Y10T409/303976 , Y10T409/309408 , Y10T82/2561
摘要： A motor-incorporated spindle head unit is provided with a rotatable spindle on which a rotor assembly of the drive motor is fixedly mounted. A stator assembly of the drive motor is arranged around the rotor assembly and is fixed to a housing of the spindle head unit. A heat insulating system for preventing heat transfer from the stator assembly of the drive motor to the spindle as well as the bearings supporting the spindle is arranged between the drive motor and the front part of the spindle. The heat insulating system uses the flow of air for forming a heat insulator during the operation of the spindle head unit. A cooling system for cooling the stator assembly of the drive motor is also incorporated in the housing of the spindle head unit.
摘要翻译： 具有电动机的主轴头单元设置有可旋转主轴，驱动电机的转子组件固定在该主轴上。 驱动马达的定子组件布置在转子组件的周围，并固定在主轴头单元的壳体上。 用于防止从驱动马达的定子组件到主轴以及支撑主轴的轴承的热传递的绝热系统布置在驱动马达和主轴的前部之间。 绝热系统在主轴头单元的操作期间使用用于形成绝热体的空气流。 用于冷却驱动马达的定子组件的冷却系统也结合在主轴头单元的壳体中。
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