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1. 发明授权

US5572080A Squirrel-cage rotor for induction motor 失效
标题翻译：感应电动机用鼠笼式转子
公开(公告)号：US5572080A
公开(公告)日：1996-11-05
申请号：US318885
申请日：1995-01-06
申请人： Kosei Nakamura , Yoshiyuki Hayashi , Hisashi Maeda
发明人： Kosei Nakamura , Yoshiyuki Hayashi , Hisashi Maeda
IPC分类号： H02K17/16 , H02K7/16
CPC分类号： H02K17/165
摘要： A squirrel-cage rotor 10 includes a plurality of slots 16 for accommodating secondary conductors 18 along the outer circumferential surface of a laminated core 14 fixed to a rotor shaft 12. Each slot 16 is defined by a wall having a generally elliptical profile in which a maximum circumferential distance D is larger than a maximum radial distance d in a given section orthogonal to an axis and axially penetrates near the outer circumferential surface of the laminated core 14. The radial inner profile of the slot 16 has a shape in which the tangents on given two points adjacent to the radial innermost portion of each slot wall do not cross at an acute angle in a section orthogonal to the axis, in order to prevent a stress concentration.
摘要翻译： PCT No.PCT / JP94 / 00301 Sec。 371 1995年1月6日第 102（e）日期1995年1月6日PCT 1994年2月24日PCT公布。 WO94 / 19858 PCT公开号日期1994年9月1日鼠笼式转子10包括多个狭槽16，用于沿着固定到转子轴12的层叠铁心14的外圆周表面容纳次级导体18.每个槽16由具有一般其中最大周向距离D大于垂直于轴线的给定截面中的最大径向距离d，并且在层叠铁心14的外圆周表面附近轴向穿透。椭圆形轮廓的槽16的径向内轮廓具有形状其中相邻于每个槽壁的径向最内部分的给定两点上的切线在与轴正交的截面中不以锐角交叉，以便防止应力集中。

2. 发明授权

US5760567A Induced voltage reduction method and an induced voltage reduction apparatus for an induction motor 失效
标题翻译：用于感应电动机的感应电压降低方法和感应电压降低装置
公开(公告)号：US5760567A
公开(公告)日：1998-06-02
申请号：US564053
申请日：1995-12-14
申请人： Kosei Nakamura , Yoshiyuki Hayashi , Hisashi Maeda
发明人： Kosei Nakamura , Yoshiyuki Hayashi , Hisashi Maeda
IPC分类号： H02K17/14 , H02P1/38 , H02P23/00 , H02P25/20
CPC分类号： H02K17/14 , H02P1/38 , H02P23/00 , H02P25/20
摘要： A method and apparatus for controlling an induction motor having at least high speed windings and reduced speed windings divides the reduced speed windings into first and second portions. The first and second portions of the reduced speed windings are electrically connected in series and a voltage is applied to the first and second portions of the reduced speed windings when it is desired to operate the induction motor at a reduced speed. The first and second portions of the reduced speed windings are electrically disconnected and a voltage is applied to the high speed windings when it is desired to operate the induction motor at a high speed. The induction motor has three sets of windings extending from a middle region, each set of windings having an inner winding toward the middle region and an outer winding away from the middle region. According to one aspect, a first changeover circuit is electrically connected to each set of windings, between the inner and outer windings for applying a voltage to the outer windings when it is desired to operate the induction motor at a high speed. A second changeover circuit is electrically connected to each set of windings, toward the middle region from the inner windings for applying a voltage to the inner and outer windings when it is desired to operate the induction motor at a reduced speed. It is thus possible to change from a Y configured winding connection to a .DELTA. configured winding connection.
摘要翻译： PCT No.PCT / JP95 / 00681 Sec。 371 1995年12月14日第 102（e）1995年12月14日日期PCT 1995年4月6日提交PCT公布。 WO95 / 28763 PCT出版物日期1995年10月26日用于控制具有至少高速绕组和减速绕组的感应电动机的方法和装置将减速绕组分为第一和第二部分。当希望以降低的速度操作感应电动机时，减速绕组的第一和第二部分串联电连接，并且在减速绕组的第一和第二部分施加电压。当期望以高速操作感应电动机时，减速绕组的第一和第二部分被电断开并且向高速绕组施加电压。感应电动机具有从中间区域延伸的三组绕组，每组绕组具有朝向中间区域的内部绕组和远离中间区域的外部绕组。根据一个方面，当期望以高速操作感应电动机时，第一转换电路电连接到内绕组和外绕组之间的每组绕组，用于向外绕组施加电压。第二转换电路当期望以降低的速度操作感应电机时，从内绕组电连接到每组绕组，以向内绕组施加电压到内绕组和外绕组的中间区域。因此可以从Y构造的绕组连接改变为DELTA配置的绕组连接。

3. 发明授权

US06333578B1 Induction motor 有权
标题翻译：感应电动机
公开(公告)号：US06333578B1
公开(公告)日：2001-12-25
申请号：US09254006
申请日：2000-03-01
申请人： Kosei Nakamura , Michi Masuya , Hisashi Maeda , Shinpei Uemura
发明人： Kosei Nakamura , Michi Masuya , Hisashi Maeda , Shinpei Uemura
IPC分类号： H02K1712
CPC分类号： H02K17/14
摘要： An induction motor capable of obtaining a high power characteristic in a wide range without producing induced voltage. A winding for each phase is composed of a plurality of winding components having the same number of turns. When high torque is needed with low speed rotation, a Y-connection in which winding components for each phase are connected in series is formed as shown in FIG. 2a. For medium low speed rotation, a &Dgr;-connection in which winding components for each phase are connected in series is formed as shown in FIG. 2b. For medium high speed rotation, a Y-connection in which winding components for each phase are connected in parallel is formed as shown in FIG. 2c. For high speed rotation, a &agr;-connection in which winding components for each phase are connected in parallel is formed as shown in FIG. 2d. Using the entire winding for each phase, the number of turns is decreased stage by stage to switch from low speed rotation to high speed rotation. Since there is no unused part of windings, there is no problem of induced voltage. A fall in power at the time of switching the winding formation can be restrained, so that a high power characteristic can be obtained in a wide range.
摘要翻译：一种能够在不产生感应电压的情况下在宽范围内获得高功率特性的感应电动机。每相的绕组由具有相同匝数的多个绕组部件组成。当低速旋转需要高扭矩时，如图3所示，形成其中各相的绕组部分串联连接的Y形连接。 2a。对于中低速旋转，如图3所示，形成其中各相的绕组部分串联连接的DELTA连接。 2b。对于中等高速旋转，如图3所示，形成并联连接各相的绕组部件的Y形连接。 2c。为了高速旋转，如图3所示，形成其中各相的绕组部件并联连接的α连接。 2d。对于每个相，使用整个绕组，匝数逐步减少，从低速旋转切换到高速旋转。由于没有未使用的绕组部分，所以没有感应电压的问题。可以抑制切换绕组形成时的功率下降，从而可以在宽范围内获得高功率特性。

4. 发明授权

US06255797B1 AC motor with reactor interposed between AC motor and power source 失效
标题翻译：交流电机，电抗器插在交流电机和电源之间
公开(公告)号：US06255797B1
公开(公告)日：2001-07-03
申请号：US08894843
申请日：1997-09-04
申请人： Kosei Nakamura , Michi Masuya , Hisashi Maeda , Yohei Arimatsu
发明人： Kosei Nakamura , Michi Masuya , Hisashi Maeda , Yohei Arimatsu
IPC分类号： H02P126
CPC分类号： H02P25/20 , H02P29/50
摘要： A reactor (32) and a switch (35) are interposed in parallel between U-phase, V-phase and W-phase on a power source side (31) and U, V and W terminals on a motor side (33). A changeover switch )37) is interposed between Z, X and Y terminals on the motor side (33) and the U, V and W terminals on the motor side (33). When the switch (35) is set to OFF, the changeover switch (37) is set to ON, and the switch (35) is set up so as to interconnect Z, X and Y terminals, windings of the motor are set up in the form of Y-connection, so that the motor and a power source are connected directly to each other. On the other hand, when the changeover switch (37) is switched over to OFF, and the switch (35) is set up so as to interconnect Z, X and Y terminals to the U, V and W terminals, the windings of the motor are set up in the form of &Dgr;-connection, so that the motor and the power source are connected together through the reactor (32).
摘要翻译：在电源侧（31）和电动机侧（33）上的U，V和W端子之间并联插入电抗器（32）和开关（35）并联在U相，V相和W相之间。转换开关）37）插入在电动机侧（33）上的Z，X和Y端子以及电动机侧（33）上的U，V和W端子之间。当开关（35）设定为OFF时，切换开关（37）设定为ON，开关（35）被设定为使Z，X，Y端子相互连接，电机的绕组成立 Y形连接形式，使电机和电源直接相连。另一方面，当切换开关（37）切换到OFF时，开关（35）被设置成将Z，X和Y端子连接到U，V和W端子时，绕组电动机以DELTA连接的形式设置，使得电动机和电源通过反应器（32）连接在一起。

5. 发明授权

US5134332A AC spindle motor and method of changing rotating speed of same 失效
标题翻译：交流电主轴及其转速改变方法
公开(公告)号：US5134332A
公开(公告)日：1992-07-28
申请号：US499335
申请日：1990-07-18
申请人： Kosei Nakamura , Yoshiyuki Hayashi , Kazuhisa Numai , Masami Kimijima
发明人： Kosei Nakamura , Yoshiyuki Hayashi , Kazuhisa Numai , Masami Kimijima
IPC分类号： H02K17/12 , H02K17/14
CPC分类号： H02K17/14
摘要： An ac spindle motor (10) for driving a spindle motor of a machine tool provided with a rotor (14) having an output shaft (12) connected to the spindle, and a stator (16) surrounding the rotor and having a laminated core (20) serving as a yoke, and stator winding assemblies of three phases (U-phase, V-phase, W-phase). The stator winding assembly of each phase (18u, 18v, 18w) has: windings (C.sub.2, C.sub.4) of a first group which are energized for a rotation of the spindle in both a low-speed range not higher than a given speed, and a high-speed range above the given speed; windings (C.sub.1, C.sub.3) of a second group energized only for a rotation of the spindle in the low-speed range; and electrical contact means (S1, S2, S3, S4) controlled so that the windings (C.sub.1, C.sub.2, C.sub.3, C.sub.4) of the first and second groups are energized to generate a first multipolar revolving magnetic field for the rotation of the spindle in the low-speed range, and so that only the windings (C.sub.2, C.sub.4) of the first group are energized to generate second multipolar revolving magnetic field having magnetic poles less than those of the first multipolar revolving magnetic field for the rotation of the spindle in the high-speed range. The operating mode of the ac spindle motor is changed between a high-speed mode and a low-speed mode by changing the ampere-turn of the windings and the number of poles of the revolving magnetic field.

6. 发明授权

US5636949A Multi-function machine tool 失效
标题翻译：多功能机床
公开(公告)号：US5636949A
公开(公告)日：1997-06-10
申请号：US577939
申请日：1995-12-22
申请人： Kosei Nakamura , Kazuhisa Numai , Hisashi Maeda
发明人： Kosei Nakamura , Kazuhisa Numai , Hisashi Maeda
IPC分类号： B23Q1/00 , B23Q1/70 , B23Q5/04 , B23Q37/00 , B23C9/00
CPC分类号： B23Q37/00 , B23Q1/0009 , B23Q1/70 , B23Q5/043 , B23Q5/10 , Y10T408/957 , Y10T409/309296 , Y10T409/309352 , Y10T483/1736
摘要： A multi-function machine tool provided with a motor-driven spindle on which each of a plurality of sub-motor units having individual drive motors and tools, respectively, can be removably mounted to perform a plurality of machining operations in order to comply with a change in the machining conditions and a change in the material of workpieces to be machined. The drive motors of the sub-motor units exert different output performances, i.e., different rated rotating speeds and different output torques, and can be electrically connected to the electric powers lines and control signal lines provided for the spindle head.
摘要翻译：一种具有电动主轴的多功能机床，其上分别具有各自的驱动马达和工具的多个副马达单元可分离地安装，以执行多个加工操作，以便符合加工条件的变化和要加工的工件的材料的变化。副电动机单元的驱动电动机具有不同的输出性能，即不同的额定转速和不同的输出转矩，并且可以电连接到为主轴头提供的电力线和控制信号线。

7. 发明授权

US5389847A Rotor for a high speed induction type AC motor having a press fit stacked core 失效
标题翻译：用于具有压配合堆芯的高速感应式交流电动机的转子
公开(公告)号：US5389847A
公开(公告)日：1995-02-14
申请号：US974588
申请日：1993-02-25
申请人： Kosei Nakamura , Yoshiyuki Hayashi , Kazuhisa Numai
发明人： Kosei Nakamura , Yoshiyuki Hayashi , Kazuhisa Numai
IPC分类号： H02K1/30 , H02K17/16 , H02K1/00
CPC分类号： H02K17/165
摘要： A rotor 14 for a high speed induction type ac motor having a construction such that the rotor is provided with an iron core 20 provided, at the periphery thereof, with a plurality of through-bores 22 in which electro-conductive rods 24 made of aluminum rod members are forcibly inserted in a press-fitting manner so as to form opposite projections from the axial opposite ends of the iron core 20, electro-conductive end rings 26 connected to the projections of the electro-conductive rods 24, and slitted pins 30 press-fit in small blind bores 32 formed in the projections of the electro-conductive rods 24 to thereby fixedly attach the electro-conductive rings 26 to the opposite end faces of the iron core 20.
摘要翻译： PCT No.PCT / JP92 / 00814 Sec。 371日期：1993年2月25日 102（e）日期1993年2月25日PCT提交1992年6月26日PCT公布。公开号WO93 / 00735 日本1993年1月7日。一种用于高速感应式交流电动机的转子14，其具有使得转子设置有铁芯20的结构，在其周边处设置有多个通孔22，其中电由铝棒构件制成的导电杆24以压配合的方式强制插入，从而与铁芯20的轴向相对的端部形成相对的突出部，连接到导电的突起的导电端环26 杆24，并且切割销30压配合在形成在导电杆24的突起中的小盲孔32中，从而将导电环26固定地附接到铁芯20的相对端面。

8. 发明授权

US4745320A Induction motor 失效
标题翻译：感应电动机
公开(公告)号：US4745320A
公开(公告)日：1988-05-17
申请号：US395012
申请日：1982-06-24
申请人： Shigeaki Oyama , Kosei Nakamura , Yoshiyuki Hayashi , Shigeru Koyoshida
发明人： Shigeaki Oyama , Kosei Nakamura , Yoshiyuki Hayashi , Shigeru Koyoshida
IPC分类号： H02K1/18 , H02K1/16 , H02K1/06
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

9. 发明授权

US5142179A Stator structure of built-in motor 失效
标题翻译：内置电机定子结构
公开(公告)号：US5142179A
公开(公告)日：1992-08-25
申请号：US571544
申请日：1990-08-23
申请人： Kosei Nakamura , Yoshiyuki Hayashi , Kazuhisa Numai , Masami Kimijima
发明人： Kosei Nakamura , Yoshiyuki Hayashi , Kazuhisa Numai , Masami Kimijima
IPC分类号： B23B19/02 , H02K1/04 , H02K1/16 , H02K15/02
CPC分类号： H02K1/04 , H02K1/16 , H02K2201/09
摘要： The stator of a built-in motor must be firmly and accurately mounted on the spindle head housing or the like of a machine tool. A stator core (10), i.e., a principal component of the stator is welded partially at the circumference (14) thereof, and then the circumference of the stator core (10) held by a mandrel is finished to an accurate outside diameter by grinding. The stator core (10) thus constructed is subjected to a deformation with a lapse of time after the mandrel has been removed. To solve this problem, each lamination (12) of the stator core (10) is coated with a thermosetting adhesive, to be thereby joined together, and each lamination (12) is provided with a plurality of pressed projections (22) to be joined together by weld portions (20) on the circumference of the stator core (10), or each lamination (12) is joined together by pressing a serrated bar (26) into a bore (24) thereof, without a pressed projection (22).

10. 发明授权

US4959570A Motor cooling system 失效
标题翻译：电机冷却系统
公开(公告)号：US4959570A
公开(公告)日：1990-09-25
申请号：US353621
申请日：1989-03-07
申请人： Kosei Nakamura , Yoshiyuki Hayashi
发明人： Kosei Nakamura , Yoshiyuki Hayashi
IPC分类号： H02K9/19 , H02K9/20
CPC分类号： H02K9/19 , H02K9/20
摘要： A motor cooling system in which the stator (1) of a motor is coated with a coating layer (11), and a cooling liquid is applied to the projecting portions (10) of stator coils and to the side portions of the rotor (2) to cool the motor. The motor cooling system is advantageously applicable to a spindle motor for a machine tool.

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