专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO1991005396A1 STRUCTURE OF ROTOR OF A SYNCHRONOUS MOTOR 审中-公开
标题翻译：同步电机转子结构
公开(公告)号：WO1991005396A1
公开(公告)日：1991-04-18
申请号：PCT/JP1990001245
申请日：1990-09-27
申请人： FANUC LTD , IWAMATSU, Noboru , ENDO, Yuichi
发明人： FANUC LTD
IPC分类号： H02K01/27
CPC分类号： H02K1/278 , H02K2201/06
摘要： Variation in the torque of a synchronous motor used in a machine tool leaves trace of machining on the machined surface of a work, and is not desirable. Moreover, difficulty is generally involved in magnetizing the magnets (14) that are stuck to the rotor of the synchronous motor. In this invention, the magnets (20, 30) have a contour of the shape of nearly a parallelogram, and a change in the size in the lengthwise direction (X) relative to a position in the circumferential direction Υ is approximated to a sinusoidal wave. Therefore, the gap between the neighboring magnets is set to be broad, the magnetizing operation is facilitated, and a change in the torque decreases. The change in the torque can be further decreased if the gap $(1,3)$ between the magnet (20) and the inner periphery (50) of the stator is so formed as to gradually increase from the central position (P1) in the circumferential direction Υ toward both ends.

2. 发明申请

WO1990010970A1 THROUGH TYPE MOTOR 审中-公开
标题翻译：通过类型电机
公开(公告)号：WO1990010970A1
公开(公告)日：1990-09-20
申请号：PCT/JP1990000275
申请日：1990-03-02
申请人： FANUC LTD , IWAMATSU, Noboru , ENDO, Yuichi
发明人： FANUC LTD
IPC分类号： H02K07/06
CPC分类号： H02K9/00 , F16H57/0412 , F16H57/0497 , H02K7/06
摘要： In a through type motor having a ball screw shaft (24) penetrating therethrough and driving it for rotation, flow paths (28, 30, 32) for passing compressed air for cooling are provided on one of the sides of the motor which is closer to a ball nut (22) lest the generated heat of the motor is transferred to the ball screw shaft (24) through the ball nut (22) that is fitted to one of the ends of a cylindrical shaft (20) of the through type motor and meshes with the ball screw shaft.

3. 发明申请

WO1989004078A1 STRUCTURE OF LAMINATED CORE OF MOTOR 审中-公开
标题翻译：电机层压结构
公开(公告)号：WO1989004078A1
公开(公告)日：1989-05-05
申请号：PCT/JP1988001083
申请日：1988-10-26
申请人： FANUC LTD , IWAMATSU, Noboru , ENDO, Yuichi
发明人： FANUC LTD
IPC分类号： H02K01/06
CPC分类号： H02K1/2773 , H02K1/16
摘要： An object of the invention is to provide easily and economically a stator core (10, 10') or a rotor core (32) of a motor. The invention provides a structure of a laminated core formed by pushing a spring pin (22) having tapered longitudinal ends (24) into holes (14a, 14b, 14c, 14d, 14a', 14b', 14c', 14d', 36) formed on each element sheet (12, 12', 34) forming the stator core or the rotor core. When pushed in, the spring pin (22) aligns irregular element sheets due to its righting moment in its radial direction and fastens them together.
摘要翻译：本发明的一个目的是提供一种电动机的定子铁心（10,10'）或转子铁芯（32）的容易且经济的方式。本发明提供一种通过将具有锥形纵向端（24）的弹簧销（22）推入孔（14a，14b，14c，14d，14a'，14b'，14c'，14d'，36）中而形成的层叠铁心的结构，形成在形成定子芯或转子芯的每个元件片（12,12'，34）上。当推入时，弹簧销（22）由于其径向方向的弯矩而对齐不规则的元件片，并将它们紧固在一起。

4. 发明申请

WO1990004875A1 PERMANENT-MAGNET SYNCHRONOUS MOTOR 审中-公开
标题翻译：永磁同步电机
公开(公告)号：WO1990004875A1
公开(公告)日：1990-05-03
申请号：PCT/JP1989001011
申请日：1989-10-04
申请人： FANUC LTD , IWAMATSU, Noboru , ENDO, Yuichi
发明人： FANUC LTD
IPC分类号： H02K01/27
CPC分类号： H02K1/278
摘要： A permanent-magnet synchronous motor capable of decreasing the starting torque. The thickness (t2) of a magnet (12) is gradually decreased from a central position (P1) thereof toward both ends (P4), or the outer circumference of a rotor core (10) is formed by a plurality of arcs (18), and magnets (12) having a predetermined thickness (t1) are stuck and fastened thereto, such that the gap size ($(1,3)$) gradually increases from the central position (P1) of the magnet (12) toward both ends (P2, P4). This helps decrease the starting torque that results from a change in a relatinoship of relative positions between the stator slot and the magnet when the rotor is rotated.

5. 发明申请

WO1989010653A1 SYNCHRONOUS MOTOR 审中-公开
标题翻译：同步电机
公开(公告)号：WO1989010653A1
公开(公告)日：1989-11-02
申请号：PCT/JP1989000420
申请日：1989-04-19
申请人： FANUC LTD , IWAMATSU, Noboru , ENDO, Yuichi
发明人： FANUC LTD
IPC分类号： H02K23/08
CPC分类号： H02K1/2773 , H02K21/14
摘要： A synchronous motor has an alternate arrangement of N-poles and S-poles in a field system and is driven by sinusoidal current in a three-phase star connection. The magnetic flux distribution in the gaps between the armature and the field system induced by the N- and S-poles (M1, M1') is represented by a trapezoidal curve (12). This curve is derived from a combination of a fundamental sine wave (11) having a period equal to the pole pitch defined by a pair of adjacent field poles (M1, M1') and the 3Nth harmonic (N is a natural number). Torque ripples are thus decreased, and a large torque is obtained.

6. 发明申请

WO1997010643A1 METHOD FOR CONTROLLING CURRENT OF SERVOMOTOR 审中-公开
标题翻译：用于控制伺服电机电流的方法
公开(公告)号：WO1997010643A1
公开(公告)日：1997-03-20
申请号：PCT/JP1996002661
申请日：1996-09-17
申请人： FANUC LTD , UCHIDA, Hiroyuki , IWASHITA, Yasusuke , ENDO, Yuichi , OKAMOTO, Takashi
发明人： FANUC LTD
IPC分类号： H02P21/00
CPC分类号： H02P21/06 , H02P21/22
摘要： A method for controlling the current of a servomoteur by which the reactive current is reduced in the region where no voltage saturation occurs to suppress the heat generated by the reactive current, and the motor is stably rotated even in the high-speed range. In the method using DQ conversion, to reduce the reactive current, current is made to flow in the q-phase not in the d-phase in the range other than the high-speed range and a reactive current is made to flow in the d-phase in the high-speed range. The reactive current entails the lowering of the terminal voltage of the servomotor.
摘要翻译：一种在不发生电压饱和的区域中控制无功电流减小的伺服电机的电流的方法，以抑制由无功电流产生的热量，并且电动机即使在高速范围内稳定地旋转。在使用DQ转换的方法中，为了降低无功电流，使电流在除了高速范围以外的范围内不在d相中的q相中流动，并且使无功电流在d 在高速范围内。无功电流需要降低伺服电机的端电压。

你已经成功收藏专利！

检索式保存成功!

IPRDB