JP6313573B2 - Armature core manufacturing method and armature manufacturing method - Google Patents

Description

The present invention relates to a manufacturing method and a manufacturing method of an armature of the armature core.

  In Patent Document 1 below, divided cores having teeth portions around which conductive windings are wound are annularly arranged, adjacent divided cores are engaged with each other, and a shaft is press-fitted into an axial center portion. The armature core (stator core) comprised by this is disclosed. In addition, the divided cores are connected along the circumferential direction of the stator core by engaging the engaging concave portions and the engaging convex portions.

JP 2007-159170 A

  However, in the armature core configured by engaging the engaging concave portion and the engaging convex portion and press-fitting the shaft into the shaft center portion, each of the divided cores moves when the shaft is press-fitted. As a result, it is conceivable to reduce the roundness of the armature core after completion.

SUMMARY OF THE INVENTION In view of the above, it is an object to obtain a manufacturing method and a manufacturing method of an armature of the armature core collector capable of suppressing a decrease in roundness.

The manufacturing method of the armature core according to claim 1 includes a tooth portion extending in a radial direction, a connecting portion provided on a radially inner side of the tooth portion, and an end portion on one circumferential side of the connecting portion. A plurality of split cores having a fitting portion provided on the other end in the circumferential direction of the connecting portion, and the fitting portion of one of the split cores. A split core arrangement step of annularly arranging the plurality of split cores by fitting the mated portions of the other split cores, and the split cores in the circumferential direction by supporting a part of the split cores Using a support jig having a support surface that restricts movement to the jig, a jig setting step for setting the plurality of divided cores on the support jig, and axes of the plurality of divided cores supported by the support jig the plurality of divided by forcing the core member into parts Having a core member press-fitting step of integrating said core member and said plurality of divided cores is moved radially Hair radially outward.

According to the method for manufacturing an armature core according to claim 1, the inner side in the circumferential direction of each of the connecting portions of the plurality of divided cores in which the spaces into which the core members are press-fitted are annularly formed through the divided core arranging step. Formed. Next, a plurality of split cores are set on the support jig by performing a jig setting step. Note that the divided core arranging step and the jig setting step may be completed simultaneously by arranging the plurality of divided cores in a ring shape while setting the plurality of divided cores on the support jig. Next, through the core member press-fitting step, the plurality of split cores and the core member are integrated to form an armature core. Here, in this manufacturing method, the core member is press-fitted into the axial center portions of the plurality of split cores arranged in an annular shape in a state where a part of the split core is supported by the support surface of the support jig. Thereby, the inclination of each division | segmentation core by the press injection of a core member can be suppressed, and the fall of the roundness of an armature core can be suppressed by extension.

The armature core manufacturing method according to claim 2 is the armature core manufacturing method according to claim 1, wherein the divided surface has a supported surface that is oriented in the circumferential direction and extends parallel to the teeth portion. The split core arraying step is performed using a core and the support jig having the support surface with which the supported surface abuts.

According to the method for manufacturing an armature core according to claim 2, it is possible to suppress the movement of each divided core in a direction orthogonal to the teeth portion by press-fitting of the core member, and consequently the position of each tooth portion. Deviation can be suppressed.

According to a third aspect of the present invention, there is provided an armature manufacturing method comprising: a tooth portion extending in a radial direction; a connecting portion provided on a radially inner side of the tooth portion; and an end portion on one circumferential side of the connecting portion. A plurality of split cores having a provided fitting portion and a fitted portion provided at an end on the other circumferential side of the connecting portion are used, and the fitting portion of one of the divided cores is replaced with another A split core arrangement step of annularly arranging the plurality of split cores by fitting the mated portions of the split cores, and conductive winding around the teeth portions of each of the plurality of split cores A winding winding step of forming a coil around the teeth portion by winding a wire, and after the winding winding step, supporting the part of the split core, Using a support jig having a support surface that restricts movement in the direction, A jig setting step of setting the number of division cores to the support jig, the radial direction of the plurality of divided cores by forcing the core member in the axial portion of the plurality of divided cores in a state of being supported by the supporting jig And a core member press-fitting step of moving radially outward and integrating the plurality of divided cores and the core member.

According to the armature manufacturing method of the third aspect , the winding can be wound around each tooth portion of the plurality of divided cores before the plurality of divided cores and the core member are integrated. The winding of the winding around the teeth portion can be easily performed. In addition, it is good also as a process order which passes through a winding winding process after passing through a division | segmentation core arrangement | sequence process, and is good also as a process order which passes through a division | segmentation core arrangement | sequence process after passing through a winding winding process. Further, according to the present manufacturing method, the core member is press-fitted into the axial center portions of the plurality of divided cores arranged in an annular shape in a state where a part of the divided core is supported by the support surface of the support jig. Thereby, the inclination of each division | segmentation core by the press injection of a core member can be suppressed, and the fall of the roundness of an armature can be suppressed by extension.

It is a perspective view which shows the stator comprised including the stator core of this embodiment, and the said stator core. It is a top view which shows the stator comprised including the stator core of this embodiment, and the said stator core. It is a perspective view which shows a division | segmentation core. It is a top view which shows a division | segmentation core structural piece. It is an enlarged plan view which expands and shows the front end side of a division | segmentation core structural piece. It is an enlarged plan view which shows a fitting convex part fitted to the fitting concave part and the said fitting concave part. It is a top view which shows the process in which the some division | segmentation core arrange | positioned cyclically | annularly is set to a support jig, and a shaft is press-fitted in the axial center part of the some division | segmentation core arranged circularly. It is an enlarged plan view which expands and shows the division | segmentation core set to the support jig. It is an enlarged plan view which expands and shows the front end side of the split core which concerns on a 1st modification. It is an enlarged plan view which expands and shows the front end side of the split core which concerns on a 2nd modification. It is an enlarged plan view which shows the support jig which concerns on the front end side of the split core which concerns on a 3rd modification, and a 1st modification. It is an enlarged plan view which shows the support jig which concerns on the front end side of the division | segmentation core which concerns on a 4th modification, and a 2nd modification.

(Configuration of armature core)
The armature core which concerns on embodiment of this invention is demonstrated using FIGS. In addition, the arrow Z direction, the arrow R direction, and the arrow C direction that are appropriately shown in the drawing respectively indicate the axial direction, the radial direction, and the circumferential direction of the rotating electrical machine. In addition, hereinafter, when only the axial direction, the radial direction, and the circumferential direction are indicated, the axial direction, the radial direction, and the circumferential direction of the rotating electrical machine are indicated unless otherwise specified.

  As shown in FIGS. 1 and 2, the stator core 10 as the armature core of the present embodiment has a plurality of (in the present embodiment, twelve) divided cores 12 arranged in the circumferential direction, and further in a cylindrical shape. The formed shaft 14 as a core member is formed into a divided structure formed by being press-fitted into the axial centers of 12 divided cores arranged in an annular shape.

  As shown in FIG. 3, the split core 12 is configured by splitting the core split pieces 16 extending in the radial direction in the axial direction. As shown in FIG. 12 is formed by punching (pressing) a plate-shaped material. Specifically, the split core component piece 16 includes a rectangular tooth portion component 18 extending in the radial direction. The split core component piece 16 is connected to the distal end side (radially outer side) of the tooth portion constituting portion 18 and includes a distal end portion constituting portion 20 extending in the circumferential direction. As shown in FIG. 5, the radially outer end of the tip component 20 is formed in an arc shape when viewed in the axial direction, and the end surface on one circumferential side and the other circumferential side of the tip component 20 Each of the end faces is a circumferential end face S1 formed in a direction in which the teeth portion constituting portion 18 extends, that is, substantially parallel to the radial direction. Further, as shown in FIG. 4, the split core component piece 16 is connected to the base end side (radially inner side) of the teeth portion component portion 18 and is formed in a substantially fan shape when viewed in the axial direction. A portion 22 is provided.

  Further, a convex portion 24 that protrudes toward the one end in the circumferential direction of the connecting portion constituting portion 22 is provided integrally with the connecting portion constituting portion 22. Further, the convex portion 24 is formed so as to expand toward the one side in the circumferential direction.

  Moreover, the recessed part 26 open | released toward this direction is formed in the edge part of the circumferential direction other side in the connection part structure part 22. As shown in FIG. The concave portion 26 is formed so as to be narrowed toward the other circumferential side.

  As shown in FIG. 3, the split core component pieces 16 described above are stacked in the axial direction, and the stacked split core component pieces 16 are integrated via the caulking portion 28, whereby the split core 12 is formed. It is configured. The portion where the above-described tooth portion constituting portion 18 is laminated is a tooth portion 30 around which a conductive winding is wound, and the portion where the tip portion constituting portion 20 is laminated is a rotor magnet (not shown). It is set as the front-end | tip part 32 arrange | positioned facing. Further, both end surfaces in the circumferential direction of the distal end portion 32, that is, the circumferential end surface S1 of the distal end portion configuring portion 20 are respectively supported surfaces S2 supported by a support jig 46 described later.

  Moreover, the site | part on which the connection part structure part 22 was laminated | stacked is made into the connection part 34 which forms the space where the shaft 14 is press-fit in radial direction inner side.

  Further, the portion where the convex portion 24 is laminated is a fitting convex portion 36 as a fitting portion, and as shown in FIG. 6, the radially outer surface and radial direction of the fitting convex portion 36. The inner surfaces are respectively a fitting convex outer tapered surface A1 and a fitting convex inner tapered surface A2.

  As shown in FIG. 3, the portion where the concave portion 26 is laminated is a fitting concave portion 38 as a fitted portion into which the fitting convex portion 36 of the other divided core 12 is fitted. As shown in FIG. 4, the radially outer surface and the radially inner surface of the fitting recess 38 are a fitting recess outer tapered surface B1 and a fitting recess inner tapered surface B2, respectively. Further, in a state where the shaft 14 is press-fitted into the axial center portion of the plurality of split cores 12, the fitting convex outer tapered surface A1 and the fitting concave outer tapered surface B1 are in contact with each other and the fitting convex inner tapered surface A2 is in contact. And the fitting recess inner tapered surface B2 come into contact with each other. Further, a contact portion between the fitting convex portion outer tapered surface A1 and the fitting concave portion outer tapered surface B1 is defined as an outer contact portion C1, and a contact portion between the fitting convex portion inner tapered surface A2 and the fitting concave portion inner tapered surface B2 is defined. The inner contact portion C2.

  As shown in FIGS. 2 and 6, in this embodiment, the outer contact portion C <b> 1 and the inner contact portion C <b> 2 are one split core in a state where the shaft 14 is press-fitted into the axial center portion of the plurality of split cores 12. Arranged on a bisector L3 that bisects the center line L1 of the 12 tooth portions 30 and the center line L2 of the tooth portion 30 of the other split core 12 adjacent to the one split core 12 in the circumferential direction Thus, the shapes and positions of the fitting convex part 36 and the fitting concave part 38 are adjusted.

  As shown in FIGS. 3 and 6, in this embodiment, the angle θ1 formed by the fitting convex outer taper surface A1 and the fitting convex inner taper surface A2 is the fitting concave outer taper surface B1. By setting an obtuse angle with respect to the angle θ2 formed with the concave inner tapered surface B2, the front end side in the protruding direction of the fitting convex portion 36 comes into contact with the fitting concave portion 38.

(Manufacturing method of armature core)
Next, a method for manufacturing the above-described stator core 10 will be described.

  As shown in FIG. 7, a plurality of divided cores 12 are arranged in an annular shape by first fitting fitting protrusions 36 of one divided core 12 into fitting recesses 38 of another divided core 12 (dividing). Core arrangement step).

  Next, the divided cores 12 arranged in an annular shape through the divided core arrangement step are set on the support jig 46 (jig setting step).

  Here, the configuration of the support jig 46 will be described. The support jig 46 has a base portion 48 formed in a thick cylindrical shape, and protrudes radially inward from the inner peripheral surface of the base portion 48 along the circumferential direction. And a plurality (12 in this embodiment) of support portions 50 arranged at equal intervals. As shown in FIG. 8, the end surface on one side in the circumferential direction of one support portion 50 and the end surface on the other side in the circumferential direction of another support portion 50 adjacent to the one support portion 50 in the circumferential direction are divided cores, respectively. The support surface S <b> 3 restricts the movement of the 12 tip portions 32 in the circumferential direction. The support surface S3 on one side in the circumferential direction of one support portion 50 and the supported surface S2 on the other side in the circumferential direction of the tip portion 32 extend substantially in parallel. The support surface S3 on the other side in the circumferential direction and the supported surface S2 on the one side in the circumferential direction of the distal end portion 32 extend substantially in parallel. Then, the supported surface S2 on the other circumferential side of the tip portion 32 is supported (contacted) on the support surface S3 on the one circumferential direction side of the one support portion 50, and also on the one circumferential side of the tip portion 32. The supported surface S2 is supported (contacted) with the other support surface S3 of the other support portion 50 in the circumferential direction, so that the movement of the tip end portion 32 in the circumferential direction is restricted.

  As shown in FIG. 7, in a state where the plurality of divided cores 12 are set on the support jig 46, that is, in a state where the plurality of divided cores 12 are supported by the support jig 46, the shaft 14 is divided in a ring shape. It press-fits into the axial center part of the core 12 (core member press-fit process). Thereby, each divided core 12 moves radially outward in the radial direction, and as shown in FIG. 6, the fitting convex part 36 of one divided core 12 and the fitting concave part 38 of the other divided core 12. Are in contact at two locations, the outer contact portion C1 and the inner contact portion C2. Moreover, the fitting convex part 36 of one division | segmentation core 12 and the fitting recessed part 38 of the other division | segmentation core 12 contact in two places, the outer side contact part C1 and the inner side contact part C2, and each division | segmentation core 12 of each division | segmentation core 12 is contacted. Movement of the connecting portion 34 in the circumferential direction is restricted.

  The stator core 10 is manufactured through the divided core arrangement process, the jig setting process, and the core member press-fitting process.

(Manufacturing method of armature)
Next, a method for manufacturing the stator 40 as an armature including the above-described stator core 10 will be described.

  As shown in FIG. 7, in this embodiment, a coil 44 is formed around each tooth portion 30 by winding a conductive winding 42 around each tooth portion 30 of the plurality of split cores 12. (Winding winding process). After passing through this winding winding step, the stator 40 is configured by going through the above-described divided core arrangement step, jig setting step, and core member press-fitting step.

(Operation and effect of this embodiment)
Next, the operation and effect of this embodiment will be described.

  As shown in FIG. 7 and FIG. 8, in the present embodiment, the shafts of the plurality of divided cores 12 arranged in an annular shape with the distal end portion 32 of the divided core 12 supported by the support surface S <b> 3 of the support jig 46. The stator core 10 is configured by press-fitting the shaft 14 into the center. Thereby, the inclination of each division | segmentation core 12 by the press injection of the shaft 14 can be suppressed, and by extension, the fall of the roundness of the stator 40 comprised using the stator core 10 and the said stator core 10 can be suppressed. .

  In this embodiment, the example in which the jig setting process is performed after the divided core arrangement process has been described. However, the present invention is not limited to this, and for example, the plurality of divided cores 12 are supported by the support jig 46. The divided core arranging step and the jig setting step may be completed simultaneously by arranging the plurality of divided cores 12 in a ring shape while being set in the same manner.

  Further, in the present embodiment, supported surfaces S2 provided at both ends in the circumferential direction of the distal end portion 32 of the split core 12 extend substantially parallel to the tooth portion 30, and the supported surface S2 and the supporting jig. The support surface S3 provided at 46 extends substantially in parallel. Thereby, it can suppress that each division | segmentation core 12 moves to the direction orthogonal to the teeth part 30 by press injection of the shaft 14, and can suppress the position shift of each teeth part 30 by extension.

  In the present embodiment, since the plurality of split cores 12 and the shaft 14 are integrated with each other, the winding 42 is wound around each tooth portion 30 of the plurality of split cores 12. The winding 42 can be easily wound around the teeth portion 30.

  In the present embodiment, the example in which the process sequence is performed through the divided core arrangement process after the winding winding process has been described, but the present invention is not limited to this, for example, after the divided core arrangement process. It is good also as a process order which passes through a coil | winding winding process.

  Further, in the present embodiment, an example in which both ends of the distal end portion 32 of the split core 12 are supported by the support jig 46 has been described, but the present invention is not limited to this, and for example, shown in FIGS. 9 and 10. As described above, a single or a plurality of groove portions 52 may be formed at a radially outer portion of the distal end portion 32 of the split core 12, and the inner edge (supported surface S2) of the groove portion 52 may be supported by a support jig.

  Furthermore, in this embodiment, although the example which controlled the movement to the circumferential direction of each division | segmentation core 12 with the support jig 46 was demonstrated, this invention is not limited to this, For example, it shows in FIG.11 and FIG.12. As described above, it is also possible to use support jigs 54 and 56 that restrict the movement of each divided core 12 in the circumferential direction and the movement in the radial direction. More specifically, the support jigs 54 and 56 are configured to include a base portion 58 formed in a thick cylindrical shape, and a support pin 60 formed in a spherical shape on a radially inner surface, The support pin 60 is inserted into an insertion hole 62 formed in the base portion 58. Further, a single or plural cutouts 64 are formed in the radially outer portion of the tip 32 of the split core 12, and the radially inner end of the support pin 60 is disposed in the cutout 64. The radially inner surface (support surface S3) of the support pin 60 abuts against the inner edge (supported surface S2) of the notch 64, so that each divided core 12 is moved in the circumferential direction and in the radial direction. It is regulated. In the present embodiment, the support force in the radial direction of the split core 12 is adjusted by the hydraulic pressure or the elastic force of the elastic member.

  The present invention can also be applied to manufacture of a rotor core as an armature core. Thereby, the fall of the roundness of a rotor core can be suppressed.

  Although one embodiment of the present invention has been described above, the present invention is not limited to the above, and various modifications other than the above can be implemented without departing from the spirit of the present invention. Of course.

DESCRIPTION OF SYMBOLS 10 ... Stator core (armature core), 12 ... Split core, 14 ... Shaft (core member), 30 ... Teeth part, 34 ... Connection part, 36 ... Fitting convex part (fitting part), 38 ... Fitting concave part ( Fitting part), 40 ... stator (armature), 42 ... winding, 44 ... coil, 46 ... supporting jig, 54 ... supporting jig, 56 ... supporting jig, S2 ... supported surface, S3 ... supporting surface

Claims (3)

A teeth portion extending in the radial direction; a connecting portion provided on the radially inner side of the teeth portion; a fitting portion provided on an end portion on one circumferential side of the connecting portion; A plurality of split cores having a fitted portion provided at an end on the other side in the circumferential direction, and fitting the fitting portion of one of the divided cores into the fitted portion of the other divided core. A split core arrangement step of annularly arranging the plurality of split cores by combining,
Using a support jig having a support surface that regulates movement of the divided core in the circumferential direction by supporting a part of the divided core, and a jig setting step of setting the plurality of divided cores in the support jig;
The plurality of divided cores and the core member are moved radially outwardly by press-fitting a core member into an axial center portion of the plurality of divided cores supported by the support jig. A core member press-fitting step for integrating
The manufacturing method of the armature core which has.   The split core having a supported surface that is oriented in the circumferential direction and parallel to the radial center axis of the teeth portion, and the support having the support surface with which the supported surface abuts The armature core manufacturing method according to claim 1, wherein the split core arrangement step is performed using a jig. A teeth portion extending in the radial direction; a connecting portion provided on the radially inner side of the teeth portion; a fitting portion provided on an end portion on one circumferential side of the connecting portion; A plurality of split cores having a fitted portion provided at an end on the other side in the circumferential direction, and fitting the fitting portion of one of the divided cores into the fitted portion of the other divided core. A split core arrangement step of annularly arranging the plurality of split cores by combining,
A winding winding step of forming a coil around the teeth portion by winding a conductive winding around the teeth portion of each of the plurality of divided cores;
After passing through the winding and winding step, by using a support jig having a support surface that regulates movement of the divided core in the circumferential direction by supporting a part of the divided core, the plurality of divided cores are A jig setting process for setting the support jig;
The plurality of divided cores and the core member are moved radially outwardly by press-fitting a core member into an axial center portion of the plurality of divided cores supported by the support jig. A core member press-fitting step for integrating
The manufacturing method of the armature which has.

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