JP3386660B2 - Method of manufacturing split type stator for rotating electric machine - Google Patents

Description

BACKGROUND OF THE INVENTION [0001] [Technical Field of the Invention The present invention is in the manufacture how the rotary electric machine split stator split stator body for rotary electric machine by a plurality of stator-divider is configured It is about. 2. Description of the Prior Art As shown in FIG. 4, a conventional split type stator for a rotating electric machine of this type includes a yoke portion 1a and a winding winding portion which constitute a part of an annular yoke portion of a stator core. A plurality of stator splitters 4 each formed by winding a unit winding 2 via a bobbin 3 around a winding winding portion 1b of a unit core 1 having a stator core 1b are provided. The yoke portion 1a of each unit core 1 is connected and integrated by connecting means such as laser welding, winding of tensile strength fiber, and resin molding to form a split type stator for a rotating electric machine. In this case, in the conventional split type stator for a rotating electrical machine, as shown in the drawing, the adjacent yoke portion 1a is formed by the concave portion 6a provided on the end face in the arc direction of one yoke portion 1a and the other yoke portion 1a. Convex portion 6b provided on end face in arc direction
With the yoke positioning part 6 formed by fitting with
The positioning of the butted portion of the adjacent unit cores 1 has been performed. [0003] However, in a split type stator for a rotating electric machine in which a plurality of stator splitters 4 are arranged in a ring as described above, the windings of each unit core 1 are formed. The circular inner peripheral surface formed by the arcuate polar surface 1d at the tip of the winding portion 1b has poor roundness, and the distance between each arcuate polar surface 1d and the rotor magnet differs depending on the circumferential position, and cogging (Cogging, Rotation unevenness), and there is a problem that low-speed rotation cannot be performed particularly smoothly. An object of the present invention is to provide a method of manufacturing a split stator for a rotating electric machine that can reduce cogging even in a split stator. Another object of the present invention is to provide a method of manufacturing a split type stator for a rotating electrical machine which can reduce cogging even in a split type stator and can improve the mechanical strength of a stator core. Another object of the present invention is to provide a rotary electric machine splitter which can easily improve the roundness of a circular inner peripheral surface formed by an arcuate polar surface at the end of a winding winding portion of each unit core. An object of the present invention is to provide a stator positioning jig for manufacturing a mold stator. In a method of manufacturing a split type stator for a rotating electric machine according to the present invention, a yoke portion and a winding winding portion forming a part of an annular yoke portion of a stator core are formed. A plurality of stator splitters each formed by winding a unit winding around a winding part of a unit core having the unit cores are arranged in an annular shape with their ends in the arc direction of the yoke part of each unit core facing each other. When manufacturing a split type stator for a rotating electric machine by forming a split type stator main body, a structure in which a part of the pressure slider protrudes from the inner periphery of an annular jig frame corresponding to each unit core. The diameter jig is fitted on the outer circumference of the annular row of unit cores in the rotary electric machine split type stator body arranged on the pedestal portion of the stator positioning jig, and each unit is mounted on the outer circumference of the inner diameter reference core on the pedestal portion. Circular arc in winding part of core The split stator body for the rotating electric machine was reduced in diameter in a state where the pole faces were abutted and both ends of the yoke portion of each unit core were abutted against the ends of the adjacent yoke portion, and the diameter was reduced.
The preheated annular frame is shrink-fitted to the outer periphery of the annular row of each unit core of the split stator body for a rotating electric machine, and the yoke portion of each unit core is connected. As described above, the split stator body for the rotating electric machine using the unit core is fitted on the pedestal portion of the stator positioning jig, and the diameter reducing jig is fitted on the outer periphery of the annular row of unit cores. The arc-shaped polar surface of the winding part of each unit core is abutted against the outer circumference of the inner diameter reference core, and the unit core is rotated in a state where both ends of the yoke part of the unit core abut the ends of the adjacent yoke part. To reduce the diameter of the split stator body for electrical machinery
In, it is possible to perform the work to improve the roundness of the circular inner peripheral surface formed by arcuate pole face at the tip of the wire winding part of the reduced-diameter work and the unit cores together easily. Further, since the diameter reducing jig has a structure provided with the respective pressure slides which slide on the outer circumference of the annular row of the unit cores, the structure is simple, the structure can be reduced in weight, and the handling is easy. each pressurized圧滑Doko a common pressing presses each respective unit cores corresponding to centripetal direction applied to the jig frame, rotating
The diameter-reducing movement of the split stator body for electric machine can be easily performed . FIG. 1 and FIG. 2 show an example of an embodiment of a method of manufacturing a split type stator for a rotating electric machine according to the present invention. The split stator for a rotating electric machine of the present embodiment has a structure in which an annular frame 7 is shrink-fitted on the outer periphery of a stator body 5 for a rotating electric machine. The split stator body 5 for a rotating electric machine of this embodiment used at this time has a yoke portion 1a and a winding winding portion 1b constituting a part of an annular yoke portion of the stator core. A plurality of stator splitters 4 formed by winding unit windings 2 around unit windings 1b of the unit core 1 using unit cores 1 having both ends in the arc direction of the portion 1b in the arc direction are flat surfaces 1c. Each of the unit cores 1 is arranged in an annular shape with the flat surfaces 1c at both ends in the arc direction of the yoke portion 1a of the unit core 1 facing each other. Each unit winding 2 is connected in series for each phase or wound continuously for each phase. In the center of the yoke portion 1a of the unit core 1, there are provided stator positioning holes 8a for inserting stator positioning pins 8b of the unit core circumferential direction positioning means 8, which will be described later. The annular frame 7 is provided at its center with a stator main body fitting hole 9 for fitting the outer periphery of the annular row 1A of the unit cores 1 and is mounted at 90 ° intervals near the outer edge. A hole 10 has been drilled. In the present embodiment, a stator positioning jig 11 is used to position the split stator body 5 for a rotating electric machine. The stator positioning jig 11 has a structure in which a stand 11b is erected on a base board 11a, and a circular pedestal 11c is horizontally mounted on the top of the stand 11b. In this case, the outer diameter of the pedestal portion 11c is preferably set to be equal to or less than the outer diameter of the annular row 1A of the unit cores 1. Base 11c of stator positioning jig 11
Above, a plurality of stator positioning pins 8b constituting the unit core circumferential direction positioning means 8 project upward at predetermined intervals in the circumferential direction. These stator positioning pins 8
b denotes each unit core 1 of the split stator body 5 for the rotating electric machine.
And projecting upward along the periphery of the pedestal portion 11c in accordance with the interval between the stator positioning holes 8a. In this example, a stator positioning pin 8b is fitted into a stator positioning hole 8a of the unit core 1, and the unit core 1 is attached to the base 11c.
When positioning the unit core 1 upward in the circumferential direction, the unit core 1 is lifted from the pedestal 11 c by the thickness of the unit winding 1.
Each stator positioning pin 8b protrudes from the upper end of the support base 8c rising from the base 11c. The inner diameter of the stator positioning hole 8a and the outer diameter of the stator positioning pin 8b are set such that the unit core 1 can be reduced in the centripetal direction so that the annular row 1A of the unit core 1 can be reduced. Stipulated. In the present example, the stator positioning pins 8b with respect to the size of the stator positioning holes 8a
Are relatively thin, so that the unit core 1 can be reduced in diameter in the centripetal direction. Instead of this, the stator positioning hole 8a may be formed as a long hole in the diameter decreasing direction. Base 11c of stator positioning jig 11
At the upper center, a cylindrical inner diameter reference mandrel 12 is further protruded as a unit core inner diameter direction positioning means. The outer diameter of the inner diameter reference core 12 is set to a preferable inner diameter of a circular inner peripheral surface formed by the arcuate polar surface 1d at the tip of the winding portion 1b of each unit core 1 to be positioned. With respect to the outer periphery of the inner diameter reference core 12, each stator positioning pin 8
The circles formed by the rows b are provided concentrically. In this embodiment, a diameter reducing jig 13 is used as a diameter reducing means for reducing the diameter of the annular row 1A of the unit cores 1 in the split stator body 5 for a rotating electric machine. The diameter reducing jig 1
Reference numeral 3 denotes a structure in which a part of the pressure slider 15 is protruded from the inner periphery of the annular jig frame 14 corresponding to each unit core 1. In this example, a roller bearing is used as the pressure slider 15, and a part of the rotatable roller 15 a is protruded to the inner periphery of the jig frame 14 so that the jig frame 1 can be used.
4 is assembled. The roller 15a is attached so as to rotate in a direction in which the center hole 14a of the jig frame 14 penetrates. As the pressure slider 15, a ball bearing can be used instead of a roller bearing. The inner diameter of the center hole 14 a of the jig frame 14 is formed to be slightly larger than the outer diameter of the annular row 1 </ b> A of the unit cores 1 in the split stator body 5 for a rotating electric machine. The protruding length of the roller 15a from the inner periphery of the jig frame 14 is set substantially to a dimension that reduces the diameter of the annular row 1A of the unit cores 1. In the case of the present example, the support base 8c of the unit core circumferential direction positioning means 8 may be provided annularly on the periphery of the base 11c. Next, a method of manufacturing the split type stator for a rotating electric machine according to the present embodiment will be described with reference to FIGS. First, the split type stator main body 5 for the rotating electric machine is positioned in the circumferential direction on the pedestal portion 11c of the stator positioning jig 11 using the unit core circumferential direction positioning means 8.
Split type stator body 5 for rotating electric machine with respect to pedestal portion 11c
Positioning in the circumferential direction is performed by fitting stator positioning holes 8a provided in each unit core 1 to corresponding stator positioning pins 8b, and supporting each unit core 1 by a support base 8c. When the unit cores 1 are positioned using the stator positioning holes 8a and the stator positioning pins 8b in this manner, the unit cores 1 are easily placed on the pedestal portion 11c in the circumferential direction so that they are not separated from each other. Along. Next, the diameter reducing jig 13 is fitted to the outer periphery of the annular row 1A of the unit core 1 of the divided stator body 5 for the rotating electric machine to reduce the diameter of the divided stator body 5 for the rotating electric machine. The diameter reduction of the split type stator main body 5 for the rotating electric machine by the diameter reducing jig 13 is performed by fitting the jig frame 14 of the diameter reducing jig 13 to the outer periphery of the annular row 1A of the unit cores 1. This is performed by pressing and moving in the axial direction of the row 1A.
When the jig frame 14 is fitted to the outer periphery of the annular row 1A of the unit cores 1 and is pressed and moved in the axial direction of the annular row 1A of the unit cores 1, a part of the jig frame 14 protrudes from the inner periphery of the jig frame 14. Each roller 15a rotates as the jig frame 14 moves and presses each unit core 1 in a centripetal direction, whereby the annular row 1A of the unit cores 1, that is, the split type stator body 5 for the rotating electric machine is reduced in diameter. Will be. With such a diameter reduction movement of each unit core 1, an arc-shaped pole surface 1 d in a winding winding portion 1 b of each unit core 1 is formed.
Are abutted against the outer circumference of the inner diameter reference mandrel 12 as the unit core inner diameter direction positioning means to perform positioning in the inner diameter direction, and the flat surfaces 1c at both ends of the yoke portion 1a of each unit core 1 are connected to the adjacent joints. Flat surface 1c of iron part 1a
Is matched to. As described above, when the arc-shaped polar surface 1d of the winding winding portion 1b of each unit core 1 is abutted on the outer periphery of the inner diameter reference core 12 as the unit core inner diameter direction positioning means, the winding of each unit core 1 is made. The roundness of the circular inner peripheral surface formed by the arcuate polar surface 1d at the tip of the winding portion 1b can be easily improved. As described above, each unit core 1 is
Is pressed in the centripetal direction, in this example, the thickness of the stator positioning pin 8b is relatively small with respect to the size of the stator positioning hole 8a.
The diameter of the annular row 1A of the unit cores 1 can be reduced without any trouble even if the stator positioning means 8 including the stator positioning pins 8a and the stator positioning pins 8b is used. The movement of the jig frame 14 of the diameter reducing jig 13 is performed by moving the jig frame 14 of the diameter reducing jig 13.
It is preferable that the annular frame 7 is overlapped with the annular frame 7 from the beginning, and the annular frame 7 is pressed by pressing means (not shown). That is, when the jig frame 14 of the diameter reducing jig 13 is pressed by the annular frame 7, the annular frame 1A of the unit core 1 is reduced in diameter as the jig frame 14 moves, and the annular frame 7 It will be sequentially fitted on the outer periphery of the row 1A. When the work proceeds in this state, the annular frame 7 can be fitted while the annular row 1A of the unit cores 1 is reduced in diameter by the diameter reducing jig 13. Further, at the stage when the annular frame 7 is completely fitted into the annular row 1A of the unit cores 1, the jig 13 can be pressed by the movement of the annular frame 7 and pulled out from the annular row 1A of the unit cores 1. . A diameter reducing jig 13 is first fitted on the outer periphery of the annular row 1A of the unit cores 1, and the annular row of the unit cores 1 is formed on the lower half side of the annular row 1A of the unit cores 1 in the axial center direction. 1A can be reduced in diameter, and the annular frame 7 can be fitted into the annular row 1A of the unit core 1 in such a state. Again,
At the stage when the annular frame 7 is completely fitted into the annular row 1A of the unit cores 1, the diameter reducing jig 13 can be pressed by the movement of the annular frame 7 and pulled out from the annular row 1A of the unit cores 1. The pulling-out of the diameter reducing jig 13 from the annular row 1A of the unit cores 1 can be performed by pulling the diameter reducing jig 13 by another pulling means. In particular, when a roller bearing or a ball bearing is used as the pressure slider 15 and a part of the roller or ball is projected to the inner periphery of the jig frame, each unit core 1 is formed by a part of the roller or ball. Can be pressed in the centripetal direction to easily reduce the diameter of the annular row 1A of the unit cores 1 and easily slide the jig 13 into the outer periphery of the annular row 1A of the unit cores 1 to fit. In this case, the stator positioning jig 1
When the outer diameter of the first pedestal portion 11c is set to be equal to or less than the outer diameter of the annular row 1A of the unit cores 1, the reduced diameter jig 13 that is pressed and moved can easily pass through the pedestal portion 11c, and is pulled out. Can be easily performed. Further, even if the stator positioning pins 8b are fitted into the stator positioning holes 8a of the respective unit cores 1 and positioned, the stator positioning pins 8b and the stator positioning holes 8a reduce the diameter of the annular row 1A of the unit cores 1. Since the diameter reduction movement of the unit core 1 in the centripetal direction is made possible, the diameter reduction of the annular row 1A of the unit cores 1 can be performed without any trouble. FIG. 3 shows another example of the stator positioning jig 11 used in the present invention. In the stator positioning jig 11 of the present example, the pedestal portion 11 of the stator positioning jig 11 is used as the unit core circumferential direction positioning means 8.
A plurality of stator positioning magnets 8d are provided on c at predetermined intervals in the circumferential direction thereof and mainly adsorb the yoke portion 1a of each unit core 1. In this case, each of the stator positioning magnets 8d is mounted on the pedestal portion 11c such that the upper surface thereof coincides with the outer peripheral upper surface of the pedestal portion 11c.
A recess 11d is provided in the center of the pedestal portion 11c so as to float the inward end of the unit core 1 by the thickness of the unit winding 2. The interval between the stator positioning magnets 8d is determined so as to correspond to the center of the yoke portion 1a of each unit core 1. In the center of the concave portion 11d of the pedestal portion 11c, a columnar inner diameter reference mandrel 12 as a unit core inner diameter direction positioning means is protruded. As described above, the unit core circumferential direction positioning means 8
Is composed of a plurality of stator positioning magnets 8d provided on the pedestal portion 11c of the stator positioning jig 11 at a predetermined interval in the circumferential direction thereof and adsorbing each unit core 1, the positioning of each unit core 1 is simply performed by the unit. It is only necessary to attract the core 1 to the stator positioning magnet 8d, and the positioning of the split stator main body 5 for the rotating electric machine can be performed very easily. When the unit core 1 is positioned by the stator positioning magnet 8d, the diameter reduction movement of the unit core 1 in the centripetal direction can be performed without any trouble, and the diameter reduction of the annular row 1A of the unit core 1 can be performed without any trouble. it can. In this case, each stator positioning magnet 8d is
When the unit core 1 is incorporated into the pedestal portion 11c so that the upper surface thereof coincides with the upper surface of the pedestal portion 11c, each unit core 1
Can be smoothly moved on the base 11c. As the pressure slider 15 of the diameter reducing jig 13, for example, a wedge-shaped body made of tetrafluoroethylene or a metal wedge having a smoothed end surface is used to cure a large number of the wedge-shaped bodies. The jig frame 14 may be provided on the inner periphery of the jig frame 14 in a wedge shape so that the height on the entrance side of the jig frame 14 is low and the height on the exit side is high. In the examples shown in FIGS. 1 and 3, the case where the inner diameter reference mandrel 12 as the unit core inner diameter direction positioning means of the stator positioning jig 11 is cylindrical is shown.
The shape of the inner diameter reference core 12 is not limited to this, and may be, for example, an annular shape. In the above example, the connection of the yoke portion 1a of each unit core 1 is preferably performed by the annular frame 7. However, the connection may be performed by welding or a tying tool such as fiber. Alternatively, it may be performed using a resin mold or the like. Further, in the above example, an example was described in which the present invention was applied to a case where both ends of the yoke portion 1a of each unit core 1 were flat surfaces 1c, but the present invention is not limited to this. As shown in FIG. 4, a split type stator using a unit core 1 of a type in which an arc-shaped end surface of a yoke portion 1a is fitted with an arc-shaped end surface of an adjacent yoke portion 1a and a concave portion 6a and a convex portion 6b. The same can be applied to the manufacturing method. The constituent features of some of the inventions described above are as follows. (1) A unit core having a yoke portion and a winding portion constituting a part of an annular yoke portion of a stator core, and a plurality of unit windings wound around the winding portion of the unit core. In a stator positioning jig for manufacturing a split type stator for a rotating electric machine for positioning a stator splitter in an annular shape, a circumferential side of a unit core of the stator splitter is arranged on a peripheral side on a pedestal portion in which the stator splitters are annularly arranged. A unit core circumferential positioning means for performing positioning is provided in an annular shape, and the center side on the pedestal portion is abutted against an arc-shaped polar surface at the tip of a winding portion of each unit core to perform positioning in the inner diameter direction. A split type stay for a rotating electric machine, characterized in that an inner diameter reference mandrel as a unit core radial direction positioning means to be performed is provided so as to project concentrically with respect to the unit core circumferential direction positioning means. Manufacturing stator positioning jig. (2) The unit core circumferential direction positioning means is protruded through a support base for floating the unit core by the thickness of the unit winding, and is passed through a stator positioning hole of each unit core. The stator positioning jig for manufacturing a split type stator for a rotating electric machine according to item (1), characterized by comprising a stator positioning pin. (3) The unit core circumferential direction positioning means is fixedly mounted on the outer peripheral side of the pedestal portion in a height corresponding to the unit cores at a height for floating the unit cores by the thickness of the unit winding. The stator positioning jig for manufacturing a split-type stator for a rotating electric machine according to item (1), characterized by being constituted by a stator positioning magnet. According to the method of manufacturing a split type stator for a rotating electrical machine of the present invention, a split type stator body for a rotating electrical machine using a unit core is mounted on a pedestal portion of a stator positioning jig by a reducing jig. Is fitted on the outer periphery of the annular row of unit cores, and the arc-shaped pole surface in the winding winding portion of each unit core is abutted on the outer periphery of the inner diameter reference core on the pedestal portion, and the yoke portion of each unit core is Since the both ends are in contact with the end of the adjacent yoke, the circularity of the circular inner peripheral surface formed by the arc-shaped polar surface at the end of the winding winding part of each unit core and the diameter reduction work is determined. It is possible to easily perform the work of easily improving. Further, since the diameter reducing jig has a structure in which each pressure slide is slid on the outer circumference of the annular row of unit cores, the structure is simple, the structure can be reduced in weight and the handling is easy. each pressurized圧滑Doko a common pressing presses each respective unit cores corresponding to centripetal direction applied to the jig frame, rotating
The diameter-reducing movement of the split stator body for electric machine can be easily performed .

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a state before assembling in an example of an embodiment of a method of manufacturing a split type stator for a rotating electric machine according to the present invention. FIG. 2 is a front view of an annular row of unit cores used in the present example. FIG. 3 is a perspective view showing another example of a stator positioning jig used in the present invention. FIG. 4 is a front view showing a part of a conventional split type stator for a rotating electric machine in a cross-sectional view. [Description of Signs] 1 Unit core 1a Yoke portion 1b Winding winding portion 1c Flat surface 1d Arc-shaped pole surface 1A Annular row of unit core 2 Unit winding 3 Bobbin 4 Stator splitter 5 Split type stator body for rotating electric machine 6 yoke positioning part 6a concave part 6b convex part 7 annular frame 8 unit core circumferential direction positioning means 8a stator positioning hole 8b stator positioning pin 8c support base part 9 stator body fitting hole 10 mounting hole 11 stator positioning jig 11a base board part 11b Stand 11c Pedestal 11d Recess 12 Inner diameter reference mandrel (unit core inner diameter direction positioning means) 13 Reduced diameter jig 14 Jig frame 14a Center hole 15 Pressure slider 15a Roller

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Masahiro Koyama 1-5-15-1 Kita-Otsuka, Toshima-ku, Tokyo Inside Sanyo Electric Co., Ltd. (56) References JP-A-7-163070 (JP, A) JP-A-6-86511 (JP, A) JP-A-7-336965 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H02K 15/085 H02K 1/14 H02K 1/18 H02K 15/02

Claims (1)

(57) [Claims] [Claim 1] A part of the annular yoke portion of the stator core
The unit core having a yoke portion and a winding portion
Multiple stators with unit windings wound around the winding part
The divider is positioned in the arc direction at the yoke portion of each unit core.
With the ends of the
The split type stator for rotating electric machine
When manufacturing the theta, the inner periphery of the annular jig frame corresponds to each of the unit cores.
Use a diameter reducing jig with a structure in which a part of the pressure slider protrudes.
For the rotating electric machine placed on the base of the data positioning jig
Outside the annular row of the unit cores in the split stator body
Around the circumference of the inner diameter reference mandrel on the base,
Abutting the arc-shaped pole surface in the winding part of each unit core
And both ends of the yoke portion of each unit core are adjacent to each other.
Rotate the yoke in a state where it abuts against the end of the yoke section
Each of the divided stator bodies for a rotating electric machine, which has a reduced diameter of the split stator body for an electric machine, and has a reduced diameter.
Burn the preheated annular frame around the outer periphery of the annular array of unit cores.
Fitting and connecting the yoke portion of each of the unit cores.
A method for manufacturing a split type stator for a rotating electric machine.