JP6137907B2 - Winding method of salient pole rotor - Google Patents

Description

The present invention relates to a winding how the salient-pole rotor of the rotary electric machine.

In salient pole type rotors, various devices have been devised to improve the alignment of the windings and to improve the cooling performance of the coils.
As a conventional technique of such salient pole rotor, for example, a coil pressing plate is provided through the salient pole portion of a rotor core formed by laminating thin plates, and a coil pressing plate is used at the coil end portion. A salient pole rotation in which an aligned winding jig having grooves with a pitch approximately equal to the outer diameter of the enameled wire is attached and the winding work is performed, and the aligned winding jig is removed after the winding is completed. A child is disclosed (for example, see Patent Document 1).

JP 2003-116238 A (page 3-4, FIGS. 1-4)

In the salient pole type rotor as shown in Patent Document 1, since the aligned winding jig has grooves, the alignment of the windings is improved and more windings can be wound. However, when removing the aligned winding jig after winding, there is a problem that it is difficult to remove because the coil has entered the groove.
In addition, the coil pressing plate needs to be longer than the length of the rotor core (for example, 300 to 700 mm) laminated with thin plates, and the coil pressing plate reduces the amount of material used and the passage of wind in the radial direction of the rotor. Therefore, there is another problem that another means is required to further improve the cooling performance.

The present invention has been made to solve the above problems, alignment winding easy to, and aims to obtain a winding how excellent salient pole rotor cooling performance .

The salient pole rotor winding method according to the present invention is a salient pole rotor winding method in which a coil is formed by winding a wire around a body of a salient pole of a rotor core. have a combined groove pitch, and an insulator mounted on the body portion of the salient pole of the axial ends of the rotor core, the inner guide, the outer guide to be combined outside combined inside the insulator, and a gap The inner guide has a U-shaped notch on the opposite side of the inner guide facing the rotor core, and penetrates outward from the U-shaped facing surface. The outer guide has a surface corresponding to the U-shaped opposing surface of the inner guide and a through hole corresponding to the through hole of the inner guide, and the clearance gap bar includes the inner guide and the outer guide. and the rod portion connecting has a fitting portion protruding perpendicularly from the rod portion in the vicinity of both end portions of the rod-shaped portion, the inner The id and outer guide, combined on both sides of the insulator mounted on the body portion of the salient pole, after winding the wire by a predetermined number along the grooves of the insulator, leaving a gap through hole of the inner guide and an outer guide A rod fitting portion is inserted, a wire is wound from above the gap-opening rod to form a predetermined coil, and the winding jig is removed after the winding is completed.

According to the salient pole rotor winding method of the present invention, an insulator having grooves matched to the pitch of the wire to be wound is mounted on the salient pole body at both ends of the rotor core in the axial direction and rotated. An inner guide having a through-hole penetrating outward from the U-shaped facing surface on the surface opposite to the side facing the core, and a U-shaped facing surface of the inner guide Combine both sides of the outer guide frame jig with the corresponding surface and the through hole corresponding to the through hole of the inner guide on both sides of the insulator, wind the wire along the groove of the insulator, and in the middle of winding Then, a gap bar is inserted between the inner guide and the outer guide, and a wire is wound from above to form a predetermined coil. After the winding is completed, the reel jig is removed. Is wound in line along the groove of the insulator that will be the product after winding. Removed and a gap for cooling the coil end portion is formed, thereby improving the cooling performance of the coil.

It is a perspective view which shows the state which attached the winding frame jig | tool to the salient pole type rotor by Embodiment 1 of this invention. It is a perspective view which shows the insulator of the salient pole rotor of FIG. It is a perspective view which shows the inner guide of the reel jig of the salient pole type | mold rotor of FIG. It is a perspective view which shows the outer guide of the winding frame jig | tool of the salient pole type rotor of FIG. It is a top view which shows the outer guide base of the winding frame jig | tool of the salient pole type rotor of FIG.

Embodiment 1 FIG.
This will be described below with reference to the drawings. 1 is a perspective view showing a state in which a reel jig is attached to the salient pole rotor according to the first embodiment, and FIG. 2 is an insulation provided at a coil end portion of the salient pole rotor of FIG. It is a perspective view of a thing. 3 is a perspective view of the inner guide of the winding jig, FIG. 4 is a perspective view of the outer guide of the winding jig, and FIG. 5 is a plan view of the outer guide base for fixing the outer guide.

In FIG. 1, the rotor core 1 of the rotor body is configured by laminating thin plates, and has short-circuit plates 2 having substantially the same shape as the thin plates on both end surfaces in the laminating direction. An insulator 3 is provided on the body of the salient pole. The shape and function of the insulator 3 will be described later. The rotor core 1 and the short-circuit plate 2 are fixed by an outer peripheral side fixing bolt 4 and an inner peripheral side fixing bolt 5 that are provided through the rotor core 1. In addition, illustration of the rotating shaft part in the center is abbreviate | omitted in the figure.
As a winding frame jig to be a winding guide at the time of winding, an inner guide 6, an outer guide 7 and an outer guide 8, a gap bar 9 connecting the inner guide 6 and the outer guides 7, 8, and an outer guide 7 , 8 are integrally attached to an outer guide base 10.
1 indicates a coil wound around the body of the salient pole of the rotor core 1, and the coil end portion is omitted so that the insulator 3 can be seen.

Next, the shape of the insulator 3 provided outside the short-circuit plate 2 will be described.
FIG. 2 is a detailed view of the insulator 3. The side of the insulator 3 facing the short-circuit plate 2 is a fitting portion 3 a that fits the short-circuit plate 2. In other words, the fitting portion 3a is a recess that fits into the portion of the short-circuit plate 2 at the position of the body portion in the body portion of the salient pole at both axial ends of the rotor core 1.
The opposite surface of the fitting portion 3a is the side around which the coil is wound, and the shoulder portion in the winding direction has a plurality of grooves at a pitch that matches the pitch of the wire to be wound (that is, approximately the outer diameter of the wire). 3b is formed.
Further, a mounting hole 3c for attaching the inner guide 6 and the outer guides 7 and 8 is formed on the side surface of the insulator 3 in a direction orthogonal to the direction of the groove 3b. The surface having the mounting hole 3c is a positioning surface 3d on the insulator 3 side that contacts the inner guide 6 and the outer guides 7 and 8.
Moreover, when the coil is wound, a recess 3e serving as a cooling clearance with respect to the coil is formed in the central portion in the groove direction on the groove surface side (opposite the fitting portion 3a) of the insulator 3. Yes. By providing the recess 3e, when the coil is impregnated with the varnish after the winding work is completed, there is an advantage that the varnish can easily enter the coil through the gap.
In addition, there are wall surfaces on both sides in the pitch direction of the groove 3b, and an introduction groove 3g having an inclination that becomes thinner toward the center side of the salient pole of the rotor core 1 is formed inside the wall surface on the rotor core center side. Has been. The introduction groove 3g is provided on each of the left and right wall surfaces separated by the recess 3e.
Furthermore, the cover 3f is provided in the recess 3e of the insulator 3 to prevent interference between the outer peripheral side fixing bolt 4 and the coil during winding.

Next, the shape of each part of the reel jig will be described.
FIG. 3 is a detailed view of the inner guide 6, and is a perspective view seen from the opposite side of the direction seen in FIG. In the lower part of the drawing, a recess is formed in which the positioning surface 3d on the insulator 3 side is fitted, and this is the positioning surface 6a of the inner guide 6, and the positioning surface 6a is provided with a mounting hole 6b. . Further, the upper side is largely cut out in a U-shape, and has two through holes 6c penetrating in the lateral direction in the figure from the facing surface of the cut-out U-shaped portion toward the outside. Yes. The U-shaped part and the through hole 6c are a space for attaching the gap bar 9 and its attachment hole. Furthermore, a fixing hole 6d for fixing the inner guide 6 is provided at the center of the bottom surface of the U-shaped portion.

4 is a detailed view of the outer guide, and shows the left outer guide 7 of the outer guides 7 and 8 shown in FIG. Since the outer guide 8 is symmetrical with the outer guide 7, the outer guide 8 will be described below, but the outer guide 8 is also equivalent.
The shape viewed from above is L-shaped. In the drawing, the lower portion has a recess into which the positioning surface 3d of the insulator 3 is fitted, and this recess becomes the positioning surface 7a of the outer guide 7. A mounting hole 7b is provided on the surface. The mounting hole 7b is a notched hole, but it may be a round hole.
Further, two through holes 7 c for attaching the gap bar 9 are provided on the side surface that is the surface facing the other outer guide 8, corresponding to the through holes 6 c of the inner guide 6.
Furthermore, a fixing hole 7d and a connecting hole 7e are provided that penetrate vertically in the figure. The fixing hole 7d is a hole for fixing to the outer guide base 10 and is a counterbore so that the fixing bolt is short and may be a straight hole. The connection hole 7e is a hole for inserting an outer guide connection bolt 11 (see FIG. 1) for connecting the outer guides attached to both ends of the rotor core 1 when assembling the reel jig.

FIG. 5 is a plan view of the outer guide base 10. A female screw 10 a is formed at a position corresponding to the fixing hole 7 d of the outer guide 7, and a through hole 10 b is formed corresponding to the connecting hole 7 e of the outer guide 7. The same applies to the side corresponding to the outer guide 8. The outer guide base 10 improves the workability of assembling the reel jig, and is not always necessary.
As shown in FIG. 1, the clearance gap bar 9 is not shown in detail. As shown in FIG. 1, the rod-shaped portion connecting the inner guide 6 and the outer guide 7 or 8 and a fitting projecting from the rod-shaped portion in the right-angle direction in the vicinity of both ends thereof Part, and the whole is U-shaped. The fitting portion is detachably fitted into the through hole 6c of the inner guide 6 and the through hole 7c of the outer guide 7.

Next, a method for assembling the winding frame jig and coil winding work will be described.
First, in the body of the salient pole on both end faces of the rotor core 1 provided with the short-circuit plate 2, the insulator 3 is positioned by fitting the fitting portion 3a on the bottom surface of the insulator 3 to the short-circuit plate 2 in that portion. To do. Next, the positioning surface 6a of the inner guide 6 is aligned with the positioning surface 3d of the insulator 3 on the rotor core center side and positioned.
The outer guides 7 and 8 are attached to the outer guide base 10 and integrated in advance, and are positioned by aligning the positioning surface 7a of the outer guide 7 with the other positioning surface 3d of the insulator 3 (the same applies to the outer guide 8 side). ).
The inner guide 6 is fixed to the rotor core 1 by using the inner peripheral side fixing bolts 5 tightening the rotor core 1, so that the nut is removed and the fixing hole 6 d of the inner guide 6 is removed. Insert into the inner peripheral side fixing bolt 5.
Next, guide mounting bolts 12 (see FIG. 1) are inserted into the mounting holes of the insulator 3, the inner guide 6, and the outer guides 7 and 8, and fixed with nuts.

Next, the inner guide 6 is fixed to the rotor core 1 by tightening the removed nut to the inner peripheral side fixing bolt 5 inserted through the fixing hole 6 d at the center of the inner guide 6.
After assembling the inner guide 6 and the outer guides 7 and 8 to the end surfaces of the rotor core 1 in the same manner on both end surfaces of the rotor core 1, the inner guide 6 and the outer guides 7 and 8 are inserted into the connecting holes 7e between the outer guides 7 on both end surfaces. The outer guide connecting bolts 11 are inserted, and each is fixed with a nut. The outer guides 8 are also fixed in the same manner. Thereby, the winding frame jig is firmly fixed to both end faces.

Coil winding work is performed in this state. In the coil winding operation, first, the winding start line is set along the introduction groove 3g of the insulator 3, then the wire is wound along the groove 3b of the insulator 3, and once a predetermined number of turns are wound. Stop winding, and insert the gap bar 9 into the lower through hole 6c on the lower side of the inner guide 6 and the lower through hole 7c on the lower side of the outer guide 7 (the same applies to the outer guide 8 side). to continue. Further, in the middle of the winding work, another gap bar 9 is inserted into the upper through hole of each guide, and the winding is continued from there to finish a predetermined coil. By doing so, two coil gaps having a diameter equal to or greater than the diameter of the gap bar 9 are formed at the coil end. Thereby, the cooling performance of a coil can be improved.
The inner guide 6 and the outer guides 7 and 8 are each provided with two through holes and the gap bar 9 is inserted in two stages to form two gaps at the coil end. It is not limited to this, and may be one or three stages depending on the cooling performance.

When the winding work is completed, the outer guide connecting bolt 11 and the guide mounting bolt 12 are removed, and the inner peripheral side fixing bolt 5 fixing the inner guide 6 is loosened and removed. The guides 7 and 8 and the gap bar 9 can be disassembled and easily removed.
The insulator 3 serves as a jig at the time of winding work, and does not need to be removed after the winding work, and serves as a spacer at the coil end. Thus, the coil gap can be easily provided at the coil end, and the cooling performance of the coil can be improved.

  Further, according to the present application, since there is no coil pressing plate as in Patent Document 1 shown in the section of the prior art document, there is nothing to block the wind passing through in the radial direction, so that the cooling performance of the coil can be improved. It becomes. In FIG. 1, the outer peripheral side fixing bolt 4 is provided on the salient pole head. However, in this case as well, the bolt is round, and generally has a smaller projected area in the radial direction than the rectangular shape as in Patent Document 1. The wind in the radial direction can be used effectively.

In addition, since the inner guide 6 and the outer guides 7 and 8 of the reel jig are positioned with respect to the insulator 3, positioning can be easily performed with respect to the insulator 3 around which the coil is wound. It can be made smaller, and it is easy to perform aligned winding work with an automatic winding device.
Furthermore, since the insulator 3 and the inner guide 6 and the outer guides 7 and 8 are provided with mounting holes and tightened with bolts, it can be firmly fixed and can be easily disassembled simply by removing the bolts. The reel jig can be easily attached and detached.
Further, due to the recess 3e provided in the insulator 3, there is an advantage that cooling air enters, and when the coil is impregnated with the varnish after the end of the winding operation, the varnish easily enters the coil through this gap.
In addition, since the introduction groove 3g is provided in the insulator 3, the winding start line can be arranged with respect to the U-shaped notch portion in which the coil winding start line is provided on the upper side of the inner guide 6. Thereby, there is no interference between the winding start line and the coil wound thereafter, and the alignment of the windings can be improved. In addition, the winding start line of the coil can be prevented from being inadvertently swollen by the inclination of the introduction groove 3g, and the coil can be aligned more effectively.
Further, the cover 3f provided on the insulator 3 has an effect of preventing interference between the outer peripheral side fixing bolt 4 and the coil during winding.

  As described above, according to the winding method of the salient pole type rotor of the first embodiment, the winding of the salient pole type rotor that forms the coil by winding the wire around the body of the salient pole of the rotor core. In the method, a winding frame having an inner guide, an outer guide, and a gap bar, wherein an insulator having a groove matching the pitch of the wire to be wound is mounted on the body of the salient pole at both axial ends of the rotor core Combine the inner guide and outer guide of the jig on both sides of the insulator, wind a predetermined number of wires along the insulator groove, insert a gap bar between the inner guide and the outer guide, A wire is wound from above the gap bar to form a predetermined coil, and the reel jig is removed after the winding is completed. After winding, the reel jig is removed and the coil end is cooled. Since the gap between the use are formed, thereby improving the cooling performance of the coil.

  In addition, since both side surfaces of the insulator and the positioning surfaces provided on the inner guide and the outer guide are combined and integrated with bolts, the reel jig is easy to attach and detach, and the coil Therefore, the positioning error can be reduced, and the alignment winding work can be easily performed by the automatic winding device.

  In addition, the inner guide has a through hole that is notched in a U shape on the opposite side to the side facing the rotor core and penetrates outward from the U-shaped facing surface. It has a surface corresponding to the U-shaped opposing surface of the inner guide, and a through hole corresponding to the through hole of the inner guide, and the clearance gap bar includes a rod-shaped portion connecting the inner guide and the outer guide, and both ends of the rod-shaped portion. There is a fitting part that protrudes in the right-angle direction from the rod-like part in the vicinity of the part, and the fitting part is inserted and combined with the through hole of the inner guide and the through hole of the outer guide. It is possible to easily attach and detach, and to easily form a cooling gap in the coil end portion.

  Moreover, according to the salient pole type rotor of Embodiment 1, the salient pole type rotor having a rotor core having a plurality of salient poles and a coil formed by winding a wire around the body of the salient pole. In the above, an insulator having a groove matched to the pitch of the wire to be wound is mounted on the body of the salient pole at both axial end portions of the rotor core, and the wire is aligned and wound along the groove of the insulator. In addition, since a cooling gap is formed in the coil end portion by a reel jig that can be attached to and detached from an insulator, a salient pole rotor having excellent coil cooling performance can be easily obtained. .

  In addition, the insulator has a recess in the center in the groove direction on the groove surface side, and has wall surfaces on both sides in the pitch direction of the grooves, inside the wall surface on the rotor core center side, on the center side of the salient pole. Since the introduction groove having an inclination that becomes thinner toward the surface is formed, the alignment of the windings can be improved, and the cooling performance of the coil can be improved.

  In the present invention, the embodiments can be appropriately changed or omitted within the scope of the invention.

  1 Rotor core, 2 Short-circuit plate, 3 Insulator, 3a Fitting part, 3b Groove, 3c Mounting hole, 3d Positioning surface, 3e Recessed part, 3f Cover part, 3g Introduction groove, 4 Outer peripheral side fixing bolt, 5 Inner peripheral side Fixing bolt, 6 inner guide, 6a positioning surface, 6b mounting hole, 6c through hole, 6d fixing hole, 7 outer guide, 7a positioning surface, 7b mounting hole, 7c through hole, 7d fixing hole, 7e connecting hole, 8 outer guide , 9 Clearance bar, 10 Outer guide base, 10a Female thread, 10b Through hole, 11 Outer guide connecting bolt, 12 Guide mounting bolt

Claims (2)

In the winding method of the salient pole type rotor that forms a coil by winding a wire around the body of the salient pole of the rotor core,
Have a combined groove to the pitch of said wire is wound, and an insulator mounted on the body portion of the salient pole in the axial end portions of the rotor core,
An inner guide combined on the inside of the insulator, an outer guide combined on the outside, and a reel jig made of a gap bar;
The inner guide has a through hole that is notched in a U shape on the opposite side to the side facing the rotor core and penetrates outward from the U-shaped facing surface,
The outer guide has a surface corresponding to the U-shaped facing surface of the inner guide, and a through hole corresponding to the through hole of the inner guide,
The gap bar has a rod-shaped portion that connects the inner guide and the outer guide, and a fitting portion that protrudes in a direction perpendicular to the rod-shaped portion in the vicinity of both ends of the rod-shaped portion,
The inner guide and the outer guide are combined on both side surfaces of the insulator mounted on the body of the salient pole, and a predetermined number of the wires are wound along the groove of the insulator, and then the inner guide And inserting the fitting portion of the gap bar into the through hole of the outer guide, and further winding the wire from above the gap bar to form a predetermined coil. A salient pole rotor winding method, wherein a jig is removed. In the winding method of the salient pole rotor according to claim 1,
The winding of the salient pole rotor, wherein the both side surfaces of the insulator, the inner guide and the outer guide are combined with each other by positioning bolts provided on each side. Method.

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