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1. 发明专利

JPH06178482A COIL PROJECTION PART OF OUTER-ROTOR HIGH-SPEED ROTARY ELECTRIC MACHINE 失效
公开(公告)号：JPH06178482A
公开(公告)日：1994-06-24
申请号：JP27344092
申请日：1992-09-18
申请人： SHINKO ELECTRIC CO LTD
发明人： HATANO KAZUHISA , MURATA AKIRA
IPC分类号： H02K3/50
摘要： PURPOSE:To shorten the length of a coil overhang in an outer-rotor high-speed rotary electric machine, to enhance the cooling efficiency of the rotary electric machine, to shorten the total length in the shaft direction of the rotary electric machine and to reduce the manufacturing cost of the rotary electric machine. CONSTITUTION:The projection part is constituted in such a way that a spacer 30 which is convex lens-shaped, hemispherical or conical is arranged at the free end part of a fixed shaft 1 and that the length and the overhang height of a coil overhang from the edge 3a in the lengthwise direction of an iron core 3 and the total length in the shaft direction of a rotary electric machine are shortened.

2. 发明专利

JPH02269430A SALIENT-POLE ROTOR FOR ROTARY ELECTRIC MACHINE 失效
公开(公告)号：JPH02269430A
公开(公告)日：1990-11-02
申请号：JP16068589
申请日：1989-06-26
申请人： SHINKO ELECTRIC CO LTD
发明人： MURATA AKIRA , IZUMI MITSUO , NAKAYAMA YASUMITSU
IPC分类号： H02K1/24
摘要： PURPOSE:To stabilize mas-productivity and quality by winding a plurality of coils to be fitted on a plurality of salient-pole sections, all by the use of a machine. CONSTITUTION:On a plurality of salient-pole sections 12, 14, the first salient sections 12 are formed integrally with a yoke section 11, and a plurality of other salient-pole sections are formed separately from the yoke section 11 and are formed as the second salient-pole sections 14 to be fixed on the yoke section 11. Then, on the first salient-pole sections 12, coils 15A are fitted by winding with the use of a machine, and on the second salient-pole sections 14, coils 15B are contrived to be retained by win ding without using hands. As a result, all the coils 15A, 15B of the salient-pole sections 12, 14 can be wound up by using the machine, and mass-productivity can be enhanced, and the quality of the coils 15A, 15B can be uniformized.

3. 发明专利

JPH02152705A DRIVE FOR MOTOR-DRIVEN CHUCK 失效
公开(公告)号：JPH02152705A
公开(公告)日：1990-06-12
申请号：JP30081288
申请日：1988-11-30
申请人： SHINKO ELECTRIC CO LTD
发明人： MURATA AKIRA , KUBOKAWA SUSUMU
IPC分类号： B23B31/28
摘要： PURPOSE:To make a range from low chucking force to ordinary chucking force alterable in a stepless manner by installing a computer which feeds an inverter with output voltage in response to a chucking force command performing clamping or loosening operation according to a sense of rectilinear motion of a ball screw by rotation of a three-phase induction motor and a control signal of frequency. CONSTITUTION:When a solenoid brake is excited and an induction motor 4 is rotated in the state that a ball screw shaft attracted with an armature is locked, this rotation is converted into rectilinear motion via a ball screw 5, so that clamping or loosening operation for a chuck 6 takes place in response to a sense of this rectilinear motion. At this time, speed control of the induction motor 4 serving as a base of the rectilinear motion is constituted to vary primary input frequency with an inverter 7, whereby frequency is alterable in a wide range and, what is more, holding power of the chuck 6 is also extensively alterable. In this connection, an adjusting range of this chucking force is yet more enlargeable by making output voltage variable with the inverter 7.

4. 发明专利

JPH029521A ELECTRICALLY DRIVEN CHUCKING DEVICE 失效
公开(公告)号：JPH029521A
公开(公告)日：1990-01-12
申请号：JP33348988
申请日：1988-12-29
申请人： SHINKO ELECTRIC CO LTD
发明人： HARADA MASANOBU , ISHIKAWA YOICHIRO , IZUMI MITSUO , MURATA AKIRA , NAKAYAMA YASUMITSU , KUBOKAWA SUSUMU
IPC分类号： B23B31/117 , B23B31/24
摘要： PURPOSE:To retain the gripping power of a chuck by deterring rotation on an increase of power through the arrangement of No.1 and No.2 elastic members on both ends of a screw nut threadedly engaged with an index shaft which opens and closes chuck claws. CONSTITUTION:Claws of a chuck installed on the main shaft of a lathe 30 are opened and closed by turning a screw nut 28 through a speed reducer 13, an electromagnetic clutch 20 and a spline shaft 25 after the driving of an electric motor 11, and having an index shaft 39 threadedly engaged therewith reciprocated. When a work is gripped by a chuck through the application of inner tension/ outer clamping, a positive or a negative power acts on the index shaft 39 to compress disc springs, 41 or 42, located on both ends of the screw nut 38 and to deter rotation. The rotation of the electric motor 11 is stopped when a specified amount of deflection is detected by a load cell, 35 or 36. Hence, it becomes possible to retain the gripping power of a chuck and to prevent a work being gripped from getting loose.

5. 发明专利

JPH0297257A ROTOR OF SQUIRREL-CAGE INDUCTION MOTOR 失效
公开(公告)号：JPH0297257A
公开(公告)日：1990-04-09
申请号：JP24900288
申请日：1988-10-04
申请人： SHINKO ELECTRIC CO LTD
发明人： MURATA AKIRA
IPC分类号： H02K17/16
摘要： PURPOSE:To shorten the length of an induction motor in its axial direction by providing a conducting part, consisting of material of specific gravity larger than that of a die-cast material, to be placed in a slot and/or in a short-circuit ring and forming a balancer. CONSTITUTION:A bar member 8, consisting of Cu with specific gravity larger than Al, has a sectional shape with the peripheral curvature almost agreeing with the curvature in an upper part bottom of a slot 2 forming a sector section, and the bar member 8, partly bringing its peripheral surface into contact with the upper part bottom and extending in the axial direction in an Al conductor 3, protrudes the one end from the slot 2 into a short-circuit ring 4. This bar member 8 is provided in the two or more slots 2 adjacent to each other, and a balancer of required weight as the total is formed by these two or more bar members 8. Since the balancer is placed in the slot or in the short-circuit ring, a rotor enables its length to be shortened in the axial direction.

6. 发明专利

JPH0211362B2 失效
公开(公告)号：JPH0211362B2
公开(公告)日：1990-03-14
申请号：JP17270685
申请日：1985-08-06
申请人： SHINKO ELECTRIC CO LTD
发明人： HARADA MASANOBU , ISHIKAWA YOICHIRO , IZUMI MITSUO , MURATA AKIRA , NAKAYAMA YASUMITSU , KUBOKAWA SUSUMU
IPC分类号： B23B31/24 , B23B31/02 , B23B31/117 , B23Q17/00

7. 发明专利

JPH01252144A ROTOR FOR SQUIRREL-CAGE INDUCTION MOTOR AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH01252144A
公开(公告)日：1989-10-06
申请号：JP6358588
申请日：1988-03-18
申请人： SHINKO ELECTRIC CO LTD
发明人： KO SATORU , KATO HIROYOSHI , MURATA AKIRA
IPC分类号： H02K17/16
摘要： PURPOSE:To obtain characteristics demanded by a consumer at a low cost and easily, by making a part if the conductor part of Al die casting type rotor into a non-die casting conductor part having a conductivity different from that of Al. CONSTITUTION:A slot 1a has no opening and is formed into a fan shape where a slot width becomes narrower to the lower side. A bar conductor part 4A is composed of, for example, a copper bar, its peripheral face is partially in contact with the upper bottom part of said slot 1a, and its both ends are so positioned as to protrude outwardly from the slot 1a. An Al conductor part 4B occupies a part excepting that occupied by said bar conductor part 4A out of a space within the slot 1a. When the copper bar 4A is merely inserted from one end side of an iron core 1 into the upper part of said slot 1a at the time of forming of said conductor part 5, the conductor part 5 is positioned in the upper part to define a space together with the lower part side of said slot 1a. Then, said space is filled with Al and a short-circuit ring 3 is formed therein by the Al die casting method or the centrifugal casting method known heretofore.

8. 发明专利

JPS6234708A ELECTRIC CHUCKING DEVICE 失效
公开(公告)号：JPS6234708A
公开(公告)日：1987-02-14
申请号：JP17270685
申请日：1985-08-06
申请人： SHINKO ELECTRIC CO LTD
发明人： HARADA MASANOBU , ISHIKAWA YOICHIRO , IZUMI MITSUO , MURATA AKIRA , NAKAYAMA YASUMITSU , KUBOKAWA SUSUMU
IPC分类号： B23B31/24 , B23B31/02 , B23B31/117 , B23Q17/00
摘要： PURPOSE:To make it possible to perform the stepless regulation of chucking force, the real time display and confirmation of the chucking force, and the immediate detection of abnormality by installing a load cell in an electric chucking device for lathes. CONSTITUTION:The output torque of a motor 11 rotates a screw nut 38 through a reduction gear 13, electromagnetic clutch 20, and spline shaft 25. The rotation of the screw nut 38 moves a draw bolt 39 in an axial direction, and the tensile force of the draw bolt causes the clamping action of a chuck jaw through a converting mechanism. At this time, a belleville spring 42 is compressed and deformed, the reaction force of the spring is detected by a load cell 36, and the feed back signal controls the motor 11. And when the holding force of the chuck reaches a specific value, a spindle 30 is rotated to cut a workpiece. And a CPU device displays current chucking strength by using signals from the load cell 36.

9. 发明专利

JPS602038A ROTARY ELECTRIC MACHINE CORE 失效
公开(公告)号：JPS602038A
公开(公告)日：1985-01-08
申请号：JP10846583
申请日：1983-06-15
申请人： SHINKO ELECTRIC CO LTD
发明人： OONISHI HITOSHI , OOISHI TETSUO , MURATA AKIRA
IPC分类号： H02K1/18 , H02K1/16
摘要： PURPOSE:To improve workability of a winding process and a space factor of a coil by a method wherein a stator core is composed of a teeth part and a yoke part and the teeth part has coil slots which have openings along the outside circumference of the teeth part and the yoke part is formed by winding and laminating magnetic thin strips. CONSTITUTION:A stator core is divided into an annular yoke part 5 and an annular teeth part 6 along its circumference. Coil slots 7 which open toward the outside circumference are formed in the teeth part 6. After a coil 8 is contained in the slot with a suitable electrical insulation, the yoke part 5 is wound and laminated to complete the core. With this constitution, a winding process becomes easier and a space factor of the winding in the slot is improved.

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