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1. 发明申请

WO1991015049A1 STRUCTURE FOR COOLING STATOR 审中-公开
标题翻译：冷却定子结构
公开(公告)号：WO1991015049A1
公开(公告)日：1991-10-03
申请号：PCT/JP1991000388
申请日：1991-03-26
申请人： FANUC LTD , NAKAMURA, Kosei , HAYASHI, Yoshiyuki , NUMAI, Kazuhisa
发明人： FANUC LTD
IPC分类号： H02K09/19
CPC分类号： H02K9/22 , H02K9/19
摘要： Until today, the stator (10) of a motor has been indirectly cooled by fluid after the stator is covered with a sleeve so as to prevent the entry of the fluid thereinto. Because the above method, however, is low in cooling efficiency and increases the outer diameter of the motor, thin plates (12) coated with organic adhesive are used as element plates for forming the core part of the stator and bonded to each other by heating after laminated, and the outer surface (14) of the stator is ground and coated with a hard chrome plating thin layer (16) for preventing fluid leakage from the stator and making the stator compact.
摘要翻译：直到今天，在定子被套筒覆盖之后，马达的定子（10）已被流体间接冷却，以防止流体进入其中。然而，由于上述方法的冷却效率低，电机的外径增大，所以使用涂有有机粘合剂的薄板（12）作为用于形成定子的芯部的元件板，并通过加热并且定子的外表面（14）被研磨并涂覆有用于防止流体从定子泄漏并使定子致密的硬铬镀层薄层（16）。

2. 发明申请

WO1991001587A1 STRUCTURE FOR LIQUID-COOLING OF MOTOR 审中-公开
标题翻译：电机液体冷却结构
公开(公告)号：WO1991001587A1
公开(公告)日：1991-02-07
申请号：PCT/JP1990000865
申请日：1990-07-06
申请人： FANUC LTD , NAKAMURA, Kosei , HAYASHI, Yoshiyuki , NUMAI, Kazuhisa , KIMIJIMA, Masami
发明人： FANUC LTD
IPC分类号： H02K09/19
CPC分类号： H02K9/19 , H02K1/16
摘要： For a recent motor requiring larger output and torque, liquid-cooling is preferable for increasing cooling efficiency and, because of simplicity of construction, the so-called jacket system is employed for cooling the stator (17). The conventional jacket system, however, lowers cooling efficiency on account of a cylinder member interposed between the stator (17) and the jacket (18). In this invention, therefore, an adhesive is applied to the entire surface or a partial annular surface area (Z1) of each of laminations (16) composing the stator (17) and, with the laminations assembled, cooling liquid is prevented from entering the inner periphery of the stator (17) and thus a liquid passage (24) of the jacket (18) can be adapted to directly face the outer periphery of the stator (17).

3. 发明申请

WO1990007817A1 STATOR STRUCTURE OF BUILT-IN MOTOR 审中-公开
标题翻译：内置电机定子结构
公开(公告)号：WO1990007817A1
公开(公告)日：1990-07-12
申请号：PCT/JP1989001301
申请日：1989-12-26
申请人： FANUC LTD , NAKAMURA, Kosei , HAYASHI, Yoshiyuki , NUMAI, Kazuhisa , KIMIJIMA, Masami
发明人： FANUC LTD
IPC分类号： H02K15/02
CPC分类号： H02K1/04 , H02K1/16 , H02K2201/09
摘要： The stator of a built-in motor must be correctly secured to the spindle head housing of a machine tool. For this purpose, the periphery of a stator core (10) which is a main portion of the stator is partly welded and is held by a mandrel or the like from the inside to grind the outer circumference (14) maintaining precision. After the mandrel and the like are removed, however, the stator core (10) may undergo deformation with the passage of time. To prevent this, a thermosetting adhesive is applied to the surface of the constituent element plates (12) of the stator core (10) to bond them together, or the constituent element plates (12) are provided with a protuberance (22) as the outer circumference (14) is welded to bond them together, or a serration bar (26) is forcibly inserted in a hole (24) of the element plates (12) instead of providing the protuberance (22) to bond them together.

4. 发明申请

WO1993021681A1 ELECTRIC MOTOR PROVIDED WITH COIL COVERING MEANS 审中-公开
标题翻译：电动马达提供线圈覆盖方式
公开(公告)号：WO1993021681A1
公开(公告)日：1993-10-28
申请号：PCT/JP1993000484
申请日：1993-04-15
申请人： FANUC LTD , NAKAMURA, Kosei , HAYASHI, Yoshiyuki , NUMAI, Kazuhisa , SEKI, Tomohiro
发明人： FANUC LTD
IPC分类号： H02K03/38
CPC分类号： H02K3/50 , H02K3/38
摘要： An electric motor (10) comprises a rotor (14) having a rotary shaft (12) and a stator (18) surrounding the rotor (14). The stator (18) is provided with a substantially cylindrical laminated stator core (22) having on its inner circumference a plurality of slots (24) extending in the axial direction. In each of the slots (24), a plurality of coils (26) including former-wound coils are arranged. Each of the coils (26) has coil sides (28) held in the slots (24) and coil ends (32) which project outward from the both axial ends (30) of the laminated stator core (22). Around each of the plural coil ends (32) wound is a cloth tape (34) made of a textile material having electrically insulating and heat resisting properties. The cloth tape (34) serves to function as a coil covering means which insulates and protects the coil ends (32). The cloth tape (34) can be wound easily and quickly around the plurality of the complicatedly arranged coil ends (32) as a whole in a bandaging manner.
摘要翻译：电动机（10）包括具有旋转轴（12）和围绕转子（14）的定子（18）的转子（14）。定子（18）设置有基本上圆柱形的层叠定子芯（22），其内圆周上具有沿轴向延伸的多个槽（24）。在每个槽（24）中，布置有包括前缠绕线圈的多个线圈（26）。每个线圈（26）具有保持在槽（24）中的线圈侧（28）和从叠层定子铁心（22）的两个轴向端部（30）向外突出的线圈端部（32）。围绕卷绕的多个线圈端部（32）中的每一个是由具有电绝缘和耐热性能的纺织材料制成的布带（34）。布带（34）用作线圈覆盖装置，绝缘和保护线圈端部（32）。布带（34）可以以绷带的方式整体地容易且快速地缠绕在多个复杂布置的线圈端部（32）周围。

5. 发明申请

WO1990006617A1 AC SPINDLE MOTOR AND METHOD OF CHANGING THE REVOLVING SPEED THEREOF 审中-公开
标题翻译：交流电主轴及其改变速度的方法
公开(公告)号：WO1990006617A1
公开(公告)日：1990-06-14
申请号：PCT/JP1989001204
申请日：1989-11-29
申请人： FANUC LTD , NAKAMURA, Kosei , HAYASHI, Yoshiyuki , NUMAI, Kazuhisa , KIMIJIMA, Masami
发明人： FANUC LTD
IPC分类号： H02K17/14
CPC分类号： H02K17/14
摘要： An AC spindle motor (10) used for driving the spindle of a machine tool has a rotor (14) with an output shaft (12) that can be coupled to the spindle, and a stator (16) arranged to surround the rotor (14), the stator (16) having a laminated core (20) that forms a yoke and three-phase (U, V, W) stator windings accommodated in the winding grooves (22) of the laminated core (20) to form a revolving magnetic field. The windings (18u, 18v, 18w) of three-phase stator windings for forming the revolving magnetic field have: a first set of windings (C2, C4) served with a drive current in either a low-speed region where the revolving speed is smaller than a predetermined value and a high-speed region where the revolving speed is larger than the predetermined value; a second set of windings (C1, C3 served with a drive current in the low-speed region only; and electric contact means (S1 to S4 which so switch the circuit that the drive current is supplied to the first and second sets of windings (C2, C4, C1, C3) simultaneously during the low-speed operation to form a first plural-pole revolving magnetic field and that the drive current is supplied to the first set of windings (C2, C4) only during the high-speed operation to form a second plural-pole revolving magnetic field, the number of the second plural poles being smaller than the number of the first plural poles. The ampers turns of the windings and the number of poles are changed depending upon the low-speed operation and the high-speed operation.

6. 发明申请

WO1989012926A1 COIL WINDING STRUCTURE OF A.C. MOTOR COIL 审中-公开
标题翻译：交流电机线圈的卷绕结构
公开(公告)号：WO1989012926A1
公开(公告)日：1989-12-28
申请号：PCT/JP1989000543
申请日：1989-05-31
申请人： FANUC LTD , NAKAMURA, Kosei , HAYASHI, Yoshiyuki , NUMAI, Kazuhisa , KIMIJIMA, Masami
发明人： FANUC LTD
IPC分类号： H02P07/36
CPC分类号： H02P25/18
摘要： The working operations in a machine tool include the case where a high output at a low speed rotation is required and the case where the high output at a high speed rotation is required. To carry out these operations by one motor, each phase coil winding (X1, X2; X1', X2') is divided into a plurality of sets and a plurality of sets are inserted through each slot (SL). The terminals (U1, U2; V1, V2; W1, W2) of each phase as their division points are switched by switch means (SW, SW') such as electromagnetic relays so that the coil winding for supplying the power is selected and the ouput can be adjusted.

7. 发明申请

WO1993000735A1 ROTOR FOR HIGH-SPEED INDUCTION AC MOTOR 审中-公开
标题翻译：高速感应电动机转子
公开(公告)号：WO1993000735A1
公开(公告)日：1993-01-07
申请号：PCT/JP1992000814
申请日：1992-06-26
申请人： FANUC LTD , NAKAMURA, Kosei , HAYASHI, Yoshiyuki , NUMAI, Kazuhisa
发明人： FANUC LTD
IPC分类号： H02K17/16
CPC分类号： H02K17/165
摘要： A rotor (14) having a structure wherein a plurality of through holes (22) are provided in the peripheral part of a laminated iron core (20), and conductive rods (24) formed of aluminum rods are forced into the through holes (22), and conductive end rings (26) are coupled to the parts of the conductive rods, which are protruded from both sides of the laminated iron core (20), slotted pins (30) are forced into small holes (32) bored in both ends of the conductive rods (24), and thereby, the conductive end rings (26) are fastened firmly to both sides of the laminated iron core (20).

8. 发明申请

WO1990001388A1 DEVICE FOR CONFIRMING THE TAP OPERATION IN THE RIGID TAPPING 审中-公开
标题翻译：用于确认刚性皮带中的TAP操作的装置
公开(公告)号：WO1990001388A1
公开(公告)日：1990-02-22
申请号：PCT/JP1989000747
申请日：1989-07-27
申请人： FANUC LTD , NAKAMURA, Kosei , NUMAI, Kazuhisa
发明人： FANUC LTD
IPC分类号： B23G01/16
CPC分类号： B23G1/16 , G05B19/186 , G05B19/4062 , G05B2219/34457 , G05B2219/42268 , G05B2219/45216 , G05B2219/50234 , Y10T408/16
摘要： The female threading operation is carried out by driving a tap (14) using a built-in main shaft motor (12) which directly drives the tap (14) without using transmission mechanism and using another motor (22) moves the tap together with the main shaft motor (12) in the lengthwise direction (Z) of the tap. The two motors (12, 22) are controlled for their rotation in synchronism with each other, and a difference operation unit (32) always monitors the difference between an instructed speed of revolution sent from a synchronism control unit (36) to the built-in main shaft motor (12) and a practical speed of revolution of the built-in main shaft motor detected by a revolution detector (16). When the difference becomes greater than a predetermined value, a light-emitting diode (40) or the like produces an alarm. Therefore, the female threading operation is carried out at high speeds maintaining high threading precision, and percent defective is decreased.

9. 发明申请

WO1989006067A1 DEVICE FOR DRIVING AND CONTROLLING THE SPINDLE OF A MACHINE TOOL 审中-公开
标题翻译：用于驱动和控制机床主轴的装置
公开(公告)号：WO1989006067A1
公开(公告)日：1989-06-29
申请号：PCT/JP1988001276
申请日：1988-12-16
申请人： FANUC LTD , NAKAMURA, Kosei , KONO, Shinichi , NUMAI, Kazuhisa
发明人： FANUC LTD
IPC分类号： H02P07/36
CPC分类号： H02P25/18
摘要： A device for controlling the spindle drive comprising only one three-phase spindle motor (60) for driving a spindle (50) of a machine tool, and an electromagnetic relay (70) for selecting the delta (DELTA) or star (Y) connection of the windings (U, V, W) of the motor. When a heavy machining operation is to be carried out by rotating the spindle (50) at high speeds, the windings are connected in a delta form. When a contouring operation is to be carried out by rotating the spindle at a very low speed (e.g., 0.5 rpm), the windings are connected in a star form to produce a large torque. Compared with the conventional machining operation in which two motors were used, it is now possible to use only one motor, thus contributing to decreasing the cost.

10. 发明申请

WO1989006065A1 DEVICE FOR SWITCHING CONNECTION OF A THREE-PHASE INDUCTION MOTOR 审中-公开
标题翻译：用于切换三相感应电动机连接的装置
公开(公告)号：WO1989006065A1
公开(公告)日：1989-06-29
申请号：PCT/JP1988001277
申请日：1988-12-16
申请人： FANUC LTD , NAKAMURA, Kosei , NUMAI, Kazuhisa
发明人： FANUC LTD
IPC分类号： H02P01/32
CPC分类号： H02P25/18 , H02P1/32
摘要： Low-speed revolution characteristics of a three-phase induction motor are improved by an inverter of the PWM system by quickly switching DELTA-Y connection using semiconductor switches (1, 2, 3, 4, 5), e.g., triacs.

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