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公开(公告)号：US5134332A
公开(公告)日：1992-07-28
申请号：US499335
申请日：1990-07-18
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.
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公开(公告)号：US5177423A
公开(公告)日：1993-01-05
申请号：US864196
申请日：1992-04-03
IPC分类号： H02P25/18
CPC分类号： H02P25/18
摘要： A spindle motor for a machine tool is required to operate at a low rotational speed and to deliver a high output in a machining mode, and is required to operate at a high rotational speed and to deliver a high output in another machining mode. An AC motor employing a winding arrangement of the present invention meets those operating conditions for different machining modes, in that the coils (X1, X2; X1', X2') of each winding for a phase are divided into a plurality of sets of coils, and the plurality of sets of coils are held in a slot (SL). The connection of terminals (U1, U2; V1, V2; W1, W2) for phase dividing the coils into the sets is changed selectively by switching unit (SW, SW') such as an electromagnetic relay, to thereby supply power selectively to the coils for the output regulation.
摘要翻译： PCT No.PCT / JP89 / 00543 Sec。 371日期1990年2月12日 102（e）1990年2月12日日期PCT提交1989年5月31日PCT公布。 出版物WO89 / 12926 日期为1989年12月28日。用于机床的主轴电机需要以低转速操作并且以加工模式提供高输出，并且需要以高转速运行并输送高输出 在另一种加工模式。 采用本发明的卷绕装置的交流电动机满足用于不同加工方式的那些工作条件，因为用于相的每个绕组的线圈（X1，X2; X1'，X2'）被分成多组线圈 并且多组线圈被保持在槽（SL）中。 用于将线圈相互分割成组的端子（U1，U2; V1，V2; W1，W2）的连接由诸如电磁继电器的切换单元（SW，SW'）选择性地改变，从而选择性地向 线圈用于输出调节。
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公开(公告)号：US5168662A
公开(公告)日：1992-12-08
申请号：US820836
申请日：1992-01-15
CPC分类号： H02K1/04 , H02K1/16 , H02K2201/09 , Y10S174/20
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).
摘要翻译： 内置电机的定子必须牢固且准确地安装在机床的主轴头壳体等上。 定子铁心（10）即定子的主要部件部分焊接在其周边（14）处，然后由心轴保持的定子铁芯（10）的圆周通过磨削加工成精确的外径 。 如此构造的定子铁芯（10）在心轴已经被去除之后经历了随时间的变形。 为了解决这个问题，定子铁芯（10）的每个层叠（12）涂覆有热固性粘合剂，从而接合在一起，并且每个层压体（12）设置有多个待接合的按压突起（22） 通过将定子芯（10）的圆周上的焊接部分（20）或每个层压体（12）通过将锯齿形杆（26）压入其中的孔（24）而不受压突起（22）而连接在一起， 。
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公开(公告)号：US5142179A
公开(公告)日：1992-08-25
申请号：US571544
申请日：1990-08-23
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).
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公开(公告)号：US5010286A
公开(公告)日：1991-04-23
申请号：US365158
申请日：1989-05-08
申请人： Kosei Nakamura , Shinichi Kono , Kazuhisa Numai , Masami Kimijima
发明人： Kosei Nakamura , Shinichi Kono , Kazuhisa Numai , Masami Kimijima
CPC分类号： G05B19/186 , G05B2219/42186 , G05B2219/45216 , G05B2219/49295
摘要： When a spindle (10) of a machine tool is rotated and moved relative to a workpiece linearly along an axis (Z) thereof during a machining process such as screw cutting, a spindle servomotor (12) and a feed servomotor (22), each of which is the primary drive, must be rotated synchronously. In general, the spindle servomotor directly drives the spindle without a reduction gear, and the feed servomotor feeds a spindle head (18) through reduction gears (26, 28). Therefore, in general, the synchronous work is controlled in accordance with an acceleration and deceleration capacity of the spindle servomotor. Consequently, the spindle servomotor is rotated along the torque limit curve line (L1, L2) to drive the spindle, to thereby effect the synchronous work at a high efficiency.
摘要翻译： PCT No.PCT / JP88 / 00907 Sec。 371日期1989年5月8日 102（e）日期1989年5月8日PCT申请日1988年9月9日PCT公布。 出版物WO89 / 02618 当机床的主轴（10）在诸如螺旋切削的加工过程中沿其轴线（Z）相对于工件线性地旋转和移动时，主轴伺服电动机（12）和 每个主驱动器的进给伺服电动机（22）必须同步旋转。 通常，主轴伺服电动机直接驱动主轴而没有减速齿轮，进给伺服电动机通过减速齿轮（26,28）供给主轴头（18）。 因此，通常，根据主轴伺服电动机的加减速能力来控制同期动作。 因此，主轴伺服电动机沿着转矩极限曲线（L1，L2）旋转以驱动主轴，从而以高效率进行同步工作。
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6.发明授权Rotor for a high speed induction type AC motor having a press fit stacked core 失效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
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。
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公开(公告)号：US5467521A
公开(公告)日：1995-11-21
申请号：US318681
申请日：1994-10-17
CPC分类号： H02K17/165 , H02K15/0012 , Y10S164/10 , Y10T29/49012
摘要： A method of producing a squirrel-cage rotor for an induction motor, which includes a plurality of secondary conductors arranged respectively in through holes (16) of a laminated core (14), and a pair of end rings connecting the secondary conductors with one another at both axial ends of the laminated core (14). Each of a pair of reinforcing members (22) includes a cylindrical wall (26), an annular multi-aperture wall (28) provided with apertures (32) and extending in a radial inward direction from one edge of the cylindrical wall (26), and an annular end wall (30) extending generally parallel to the multi-aperture wall (28) in a radial inward direction from another edge of the cylindrical wall (26). Each reinforcing member (22) is arranged in a manner in which the multi-aperture wall (28) is brought into contact with one of the axial end faces of the laminated core (14) while the apertures (32) communicate with the through holes (16). In this state, the laminated core (14) and the pair of reinforcing members (22) are fixedly supported by a jig (34) and placed in a mold (36). In the casting process, molten metal is poured into a continuous cavity from a center opening (31) of the end wall (30) of one reinforcing member (22a) disposed near a gate (58), while gas in the cavity is discharged through a center opening (31) of the end wall (30) of another reinforcing member (22b).
摘要翻译： PCT No.PCT / JP94 / 00253 Sec。 371日期：1994年10月17日 102（e）日期1994年10月17日PCT 1994年2月18日PCT PCT。 WO94 / 19857 PCT公开号 日本1994年1月9日。一种用于感应电动机的鼠笼式转子的制造方法，其包括分别设置在层叠铁芯（14）的通孔（16）中的多个次级导体和一对端环 在层叠铁芯（14）的两个轴向端部处将次级导体彼此连接。 一对加强构件（22）中的每一个包括圆柱形壁（26），设置有孔（32）并沿着圆柱形壁（26）的一个边缘沿径向向内方向延伸的环形多孔壁（28） ，以及从圆柱形壁（26）的另一边缘沿径向向内的方向大致平行于多孔壁（28）延伸的环形端壁（30）。 每个加强构件（22）以使多孔壁（28）与叠层铁心（14）的一个轴向端面接触的方式设置，同时孔（32）与通孔 （16）。 在这种状态下，层叠铁心（14）和一对加强件（22）由夹具（34）固定地支撑并放置在模具（36）中。 在浇铸过程中，将熔融金属从设置在浇口（58）附近的一个加强构件（22a）的端壁（30）的中心开口（31）注入连续空腔中，同时空腔中的气体通过 另一加强件（22b）的端壁（30）的中心开口（31）。
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公开(公告)号：US5444319A
公开(公告)日：1995-08-22
申请号：US232159
申请日：1994-05-16
IPC分类号： H02K17/16
CPC分类号： H02K17/165 , Y10T29/49012
摘要： A squirrel-cage rotor (10) includes a laminated core (14) fixed to a rotor shaft (12), a plurality of secondary conductors (18) arranged respectively in a plurality of through holes (16) formed through the laminated core (14), a pair of end rings (20) connected to the secondary conductors (18) at axial ends of the laminated core (14), and a pair of reinforcing members (22, 23) respectively covering the end rings (20). The secondary conductors (18) and the end rings (20) are integrally formed through a casting process, and are connected with the laminated core (14) and the reinforcing members (22, 23). Each reinforcing member (22, 23) is formed as an annular element of high-rigidity material, and includes a cylindrical wall (26, 27) surrounding the cylindrical outer surface of the end ring (20), a multi-aperture wall (28, 29) provided with a plurality of apertures (32) which communicate respectively with the through holes (16) of the laminated core (14 ) and held between the end ring (20) and the laminated core (14), and an end wall (30, 31) brought into contact with the axial outer surface of the end ring (20).
摘要翻译： 鼠笼式转子（10）包括固定在转子轴（12）上的层叠铁芯（14），分别设置在穿过叠层铁芯（14）形成的多个通孔（16）中的多个次级导体 ），在层叠铁芯（14）的轴向端部处连接到次级导体（18）的一对端环（20）和分别覆盖端环（20）的一对加强构件（22,23）。 次级导体（18）和端环（20）通过铸造工艺一体形成，并与叠片铁心（14）和加强件（22,23）连接。 每个加强构件（22,23）形成为高刚性材料的环形元件，并且包括围绕端环（20）的圆柱形外表面的圆柱形壁（26,27），多孔壁（28） ，29）设置有多个孔（32），所述多个孔（32）分别与层压铁芯（14）的通孔（16）连通并保持在端环（20）和层压铁心（14）之间，并且端壁 （30,31）与端环（20）的轴向外表面接触。
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公开(公告)号：US5070291A
公开(公告)日：1991-12-03
申请号：US393918
申请日：1989-08-04
申请人： Kosei Nakamura , Kazuhisa Numai
发明人： Kosei Nakamura , Kazuhisa Numai
摘要： Low rotational speed characteristics of a three-phase induction motor driven by a PWM inverter are improved by rapid .DELTA.-Y connection switching by semiconductor switches (1, 2, 3, 4, 5), for example, TRIAC's.
摘要翻译： PCT No.PCT / JP88 / 01277 Sec。 371日期1989年8月4日 102（e）日期1989年8月4日PCT提交1988年12月16日PCT公布。 出版物WO89 / 06065 日期：1989年6月29日。由PWM逆变器驱动的三相感应电动机的低转速特性通过半导体开关（1,2,3,4,5）的快速DELTA-Y连接切换来提高，例如， TRIAC的。
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公开(公告)号：US5062744A
公开(公告)日：1991-11-05
申请号：US474758
申请日：1990-03-26
申请人： Kosei Nakamura , Kazuhisa Numai
发明人： Kosei Nakamura , Kazuhisa Numai
IPC分类号： B23G1/16 , G05B19/18 , G05B19/4062
CPC分类号： B23G1/16 , G05B19/186 , G05B19/4062 , G05B2219/34457 , G05B2219/42268 , G05B2219/45216 , G05B2219/50234 , Y10T408/16
摘要： When tapping is effected by a tap driven by a built-in spindle motor (12) and another motor (22), which built-in spindle motor directly drives the tap (14) to rotate without a transmission mechanism, and which other motor drives the tap (14) with the built-in spindle motor (12) to proceed along a longitudinal direction (Z), the two motors (12, 22) are synchronously controlled, and the difference between a commanded rotational speed output to the built-in spindle motor (12) from a synchronous control unit (36) and an actual rotational speed of the built-in spindle motor detected by a detector (16) is calculated by a difference calculator (32), and an alarm is output, for example, by a light-emitting diode (40), when the difference is higher than a prescribed value. Thereby, a high-speed tapping can be effected, the number of defective products can be reduced, and the threads accurately tapped.
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