JP2010022166A - Positioning apparatus, positioning structure and positioning method of split core - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a positioning method, a positioning structure and a positioning apparatus of a split core, which position the split core at an aligning position without applying post-processing to parts. <P>SOLUTION: The positioning apparatus 10 positions the split cores 42 to be aligned in an annular shape in order to form a stator 40. The apparatus 10 includes an aligning mechanism 20 for aligning the split cores 42 in the annular shape and a moving mechanism 30 for moving the split cores 42 to the aligning position of the split cores 42 aligned by the aligning mechanism 20. The aligning mechanism 20 includes an engaging member 23 which can be engaged with a positioning groove 45 formed on an outer peripheral surface of the split core 42 when the split core 42 is moved to the aligning position by the moving mechanism 30. Then, while the split cores 42 are aligned, the engaging member 23 is engaged with the positioning groove 45 to position the split cores 42 at the aligning position. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a positioning device, a structure and a method for positioning a split core to be annularly aligned to form a stator.

  As a technique for forming a stator using split cores, a technique is known in which a split core is arranged in an annular shape along the inner peripheral surface of a cylindrical housing after a coil is wound around a tooth portion of each split core. Yes. In this case, generally, the cylindrical housing is provided with a positioning mechanism for determining the circumferential position of the divided core so that the divided cores arranged inside the cylindrical housing do not shift in the circumferential direction. It is done.

For example, in Patent Document 1, in order to prevent displacement of each divided core in the circumferential direction, the circumferential position of the divided core is determined by cutting and raising a part of the cylindrical housing and engaging with the divided core. A technique for fixing is disclosed.
JP 2007-189882 A

However, according to the technique disclosed in Patent Document 1, since it is necessary to process parts (work to cut out a part of the cylindrical housing) after arranging the split cores, it is difficult to automate the assembly of the stator. There was a problem of becoming.
Further, when the positioning mechanism is provided in the cylindrical housing, there is a problem that the stator becomes large or complicated.
Furthermore, in such a technique, the circumferential position of the divided core is determined only after the cylindrical housing is processed (post-processed) after the divided core is arranged in the cylindrical housing. For this reason, it is not possible to adopt a method of tightly integrating the divided cores by urging the divided cores in the axial direction, such as press-fitting and shrink fitting, which leads to an increase in the size of the stator and backlash of the divided cores. There was a problem that it was easy.

  Accordingly, the present invention has been made to solve the above-described problems, and provides a positioning device, a structure, and a method for a split core that can position the split core at an aligned position without performing post-processing of a part. The task is to do.

  In order to solve the above problems, a split core positioning device according to the present invention is a positioning device for positioning split cores that are aligned in an annular shape to form a stator, wherein the split cores are aligned in an annular shape. Aligning means for moving, and moving means for moving the divided core to an alignment position of the divided core aligned by the aligning means, the aligning means moving the divided core to the aligned position by the moving means It is characterized by having an engaging member that can be engaged with a positioning groove formed on the outer peripheral surface of the split core.

Here, the shape of the “engaging member” is not particularly limited, and may be freely selected according to the shape of the “positioning groove”, the direction in which the “positioning” is performed, and the like. It may be engaged or it may be engaged entirely.
In addition, the mode of “positioning” is not particularly limited, and the one that determines the circumferential position of the split core, the one that determines the axial position, the one that determines the radial position, the one that determines the multi-directional position, etc. Can be illustrated.

In this split core positioning device, the split core can be positioned at the aligned position by moving the split core to the aligned position by the moving means and engaging the engaging member with the positioning groove of the split core. According to this apparatus, the divided core is positioned at the aligned position without performing post-processing of the part (for example, an operation of cutting a part of the cylindrical housing after arranging the divided core as disclosed in Patent Document 1). can do. As a result, automation of the assembly of the stator can be facilitated.
In addition, since it is not necessary to provide a positioning mechanism in the cylindrical housing that remains as a part after the stator is commercialized, the stator is not enlarged or complicated, and other parts necessary for the positioning mechanism are not left in the product. .
Further, in this device, since the split core can be positioned at the alignment position before the split core is assembled to the cylindrical housing, the split core such as press-fit or shrink fit is urged in the axial direction so as to be tightly integrated. Can be employed. Thereby, it is possible to reduce the size of the stator and to prevent the split core from rattling or misalignment.

  In the split core positioning device according to the present invention, when the split core is moved to the alignment position by the moving means while the front end of the engagement member is movably held, the front end of the engagement member It is desirable that a contact means for contacting the positioning groove with the positioning groove is provided.

  According to this device, the front end of the engaging member is held so as to be able to advance and retreat, whereby interference between the front end of the engaging member and the split core that occurs when the split core is moved to the aligned position (for example, the engagement member) (Interference with the outer peripheral surface of the split core) can be mitigated. When the split core is moved to the aligned position, the end of the engagement member is brought into contact with the positioning groove by the contact means, so that the engagement member and the positioning groove are securely engaged, and the split core Can be reliably positioned.

Here, as an aspect of the “contacting means”, a member that urges the distal end portion of the engaging member to the positioning groove by the elastic member can be exemplified.
According to this aspect, the contact means can be realized with a simple configuration such as attaching a spring. Further, by urging the distal end portion of the engaging member to the positioning groove, the distal end portion of the engaging member can be prevented from being detached from the positioning groove, and the divided core can be positioned more reliably.

  In the split core positioning device according to the present invention, the engagement member is moved when the split core is moved to the alignment position by the moving means while holding the distal end portion of the engagement member movably in the stator axial direction. It is desirable to provide arrangement means for arranging the tip of the member at a predetermined position that engages with the positioning groove.

  According to this apparatus, the front end portion of the engaging member is held so as to be movable in the stator axial direction, whereby interference between the front end portion of the engaging member and the split core that occurs when the split core is moved to the alignment position (for example, Interference between the engaging member and the outer peripheral surface, the lower surface or the positioning groove of the split core can be mitigated. When the split core is moved to the aligned position, the tip of the engaging member is disposed by the disposing means at a predetermined position where it engages with the positioning groove, so that the engaging member and the positioning groove are securely engaged. Thus, positioning of the split core can be performed reliably.

Here, the “predetermined position” is preferably the center position of the positioning groove when the positioning groove is extended, for example. In this way, by engaging the distal end portion of the engaging member at the center position of the positioning groove, the distal end portion of the engaging member is prevented from coming off from the positioning groove, and the positioning of the split core is made more reliable. can do.
Moreover, as an aspect of the “arranging means”, a member that urges the distal end portion of the engaging member in the stator axial direction by an elastic member can be exemplified. According to this aspect, it is possible to realize an arrangement unit that prevents interference between the distal end portion of the engagement member and the split core with a simple configuration such as attaching a spring.

  In order to solve the above problems, the split core positioning structure according to the present invention is a positioning structure for positioning split cores that are arranged in an annular shape to form a stator. A positioning groove that can be engaged with an engaging member provided in the external device is formed.

  In this split core positioning structure, the positioning member formed in the external device is engaged with the positioning groove formed on the outer peripheral surface of the split core, so that the split core with a simple structure can be used to The divided cores can be positioned at the alignment position without processing. By positioning in this way, automation of the assembly of the stator can be facilitated, and an increase in size and complexity of the stator can be avoided. Further, according to this structure, since the split core can be positioned before the split core is assembled to the cylindrical housing, the split core such as press-fit or shrink fit is urged in the axial direction so as to be tightly integrated. By adopting the method, the stator can be downsized, and the split cores can be prevented from rattling or misalignment.

  In the split core positioning structure according to the present invention, the positioning groove is preferably formed along the stator axial direction.

  In the positioning structure of the split core, the positioning groove is formed along the stator axial direction, so that the engaging member can be moved in the stator axial direction while being engaged with the positioning groove. At this time, the split core is prohibited from relative movement in the circumferential direction by the engaging member. Accordingly, by moving the divided cores having this structure in the stator axial direction and aligning them, the circumferential position of the divided cores can be determined while mitigating interference between the engaging member and the divided cores when the divided cores are moved. Can do.

  Here, when the positioning groove is extended to both ends of the outer peripheral surface of the split core in the stator axial direction, both ends of the positioning groove in the stator axial direction appear on both end surfaces of the split core in the stator axial direction. For this reason, when the teeth portion of the split core is covered with the insulator resin after the positioning groove is formed, the resin may flow into the groove from both ends of the positioning groove in the stator axial direction.

  Therefore, in the split core positioning structure according to the present invention, it is desirable that both ends of the positioning groove in the stator axial direction are located on the inner side of both ends of the outer peripheral surface in the stator axial direction.

  Thus, by positioning the both ends of the positioning groove in the stator axial direction inside the both ends of the stator core in the outer peripheral surface of the split core, the both ends of the positioning groove in the stator axial direction can be closed. Thereby, when covering the teeth part of a split core with the resin for insulators, it can prevent that resin flows in into a groove | channel from the stator axial direction both ends of a positioning groove | channel. Therefore, the positioning groove can be prevented from being filled with resin. As a result, since the engaging member can be more reliably engaged with the positioning groove, the divided core can be positioned more reliably.

  The split core positioning method according to the present invention made to solve the above problems is a positioning method for positioning split cores arranged in an annular shape to form a stator, and is formed on the outer peripheral surface of the split core. The division core is positioned by engaging an engaging member provided in an external device with the positioning groove formed.

In this split core positioning method, the split core can be positioned at the aligned position by moving the split core to the aligned position and engaging the engaging member with the positioning groove of the split core. According to this method, there is no need to perform post-processing of the part (such as an operation of cutting off a part of the cylindrical housing after the split core is disposed). As a result, automation of the assembly of the stator can be facilitated.
Further, since it is not necessary to provide a positioning mechanism in the cylindrical housing remaining as a part after the product, the stator is not enlarged or complicated, and other parts necessary for the positioning mechanism are not left in the product.
Further, in this method, since the split core can be positioned at the alignment position before the split core is assembled to the cylindrical housing, the split core such as press-fit or shrink fit is urged in the axial direction so as to be tightly integrated. Can be employed. Thereby, it is possible to reduce the size of the stator and to prevent the split core from rattling or misalignment.

  According to the split core positioning device, structure, and method of the present invention, as described above, the split core can be positioned at the aligned position without post-processing of the component.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, a most preferred embodiment embodying a split core positioning device, structure and method according to the present invention will be described in detail with reference to the drawings. The split core positioning device according to this embodiment performs positioning of split cores that are arranged in an annular shape to form a stator.

The split core positioning device according to the present embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is a cross-sectional view illustrating a schematic configuration of a positioning device according to the present embodiment. FIG. 2 is a top view showing the positioning device. 1 and 2 show a state in which the split core is set in the apparatus.
As shown in FIG. 1, the positioning device 10 includes an alignment mechanism 20 for aligning the split cores 42 in an annular shape, and a movement for moving the split cores 42 to the alignment position of the split cores 42 aligned by the alignment mechanism 20. A mechanism 30 and a support plate 15 that supports the alignment mechanism 20 and the moving mechanism 30 from below are provided. The alignment mechanism 20 of the present embodiment is an example of the “alignment means” of the present invention, and the movement mechanism 30 of the present embodiment is an example of the “movement means” of the present invention.

  The alignment mechanism 20 includes an outer peripheral alignment member 21 for aligning the outer periphery of each split core 42 and a support member 29 for supporting the split core 42 from below. The support member 29 is attached to the upper part of the support plate 15.

  As shown in FIG. 2, eighteen outer peripheral alignment members 21 are provided so as to correspond to the respective divided cores 42. Each outer peripheral alignment member 21 is arranged in an annular shape along the housing 11 of the positioning device 10. Thereby, when each divided core 42 is arranged along the inner peripheral surface 21 a of the outer peripheral alignment member 21, the divided cores 42 are arranged in an annular shape. As shown in FIG. 1, a hollow portion 22 opened in the radial direction of the stator is provided inside each outer peripheral alignment member 21. The hollow portion 22 is provided with an engaging member 23 that can be engaged with a positioning groove 45 of the split core 42 described later. The positioning groove 45 is formed on the outer peripheral surface 42a of the split core 42 along the stator axial direction, and details thereof will be described later.

The engaging member 23 will be described with reference to FIGS. 3 and 4. FIG. 3 is a front view showing the outer peripheral alignment member. FIG. 4 is a cross-sectional view showing the engaging member and the split core.
As shown in FIGS. 3 and 4, the engaging member 23 includes a cylindrical main body 24, a tip part 25 that is formed separately from the main body 24 and has a spherical shape, and the tip part 25 into the positioning groove 45. An abutting spring 27 (see FIG. 4) for abutting and a disposing spring 28 (see FIG. 3) for disposing the distal end portion 25 at a predetermined position engaging with the positioning groove 45 are provided. The contact spring 27 of the present embodiment is an example of the “contact means” of the present invention, and the placement spring 28 of the present embodiment is an example of the “placement means” of the present invention.
Further, the base end portion 26 of the engaging member 23 (main body 24) is supported by a base end shaft 26a provided so as to be orthogonal to both the stator axial direction and the stator radial direction. Thereby, the front-end | tip part 25 of the engaging member 23 can rock | fluctuate centering on the base end axis | shaft 26a.

  The contact spring 27 is provided inside the main body 24 of the engagement member 23 as shown in FIG. One end of the contact spring 27 is attached to the base shaft 26a. One end of the contact spring 27 may be attached to the base end portion 26. On the other hand, the other end of the contact spring 27 is attached to the distal end portion 25 of the engagement member 23. With such a configuration, the abutting spring 27 holds the distal end portion 25 of the engaging member 23 so as to advance and retreat with respect to the proximal end shaft 26a (main body 24), and the movable core 30 aligns the divided cores 42 in the aligned position. The distal end portion 25 of the engaging member 23 is brought into contact with the positioning groove 45 of the split core 42 when moved to.

Thus, by providing the contact spring 27, the “contact means” of the present invention can be realized with a simple configuration. Further, by holding the front end portion 25 of the engagement member 23 so as to be able to advance and retreat by the contact spring 27, interference between the engagement member 23 and the division core 42 that occurs when the division core 42 is moved to the alignment position, for example, Interference between the distal end portion 25 of the engagement member 23 and the outer peripheral surface 42a of the split core 42 can be mitigated.
When the split core 42 is moved to the aligned position, the abutting spring 27 brings the tip 25 of the engaging member 23 into contact with the positioning groove 45, so that the engaging member 23 and the positioning groove 45 are securely connected. By engaging, the division core 42 can be positioned reliably. In addition, since the distal end portion 25 of the engaging member 23 engaged with the positioning groove 45 is urged to the positioning groove 45 by the contact spring 27, the distal end portion 25 of the engaging member 23 is moved from the positioning groove 45. Therefore, the split core 42 can be positioned more reliably.

  As shown in FIG. 3, the placement spring 28 is provided in the hollow portion 22 of each outer peripheral alignment member 21. One end of the arrangement spring 28 is attached to the lower surface of the hollow portion 22 in the outer peripheral alignment member 21. The arrangement spring 28 is installed so as to extend upward from the lower surface of the hollow portion 22 of the outer peripheral alignment member 21 in the stator axial direction. Here, in this embodiment, the other end of the placement spring 28 is not fixed and is free, and is positioned so as to support the front end side of the main body 24 of the engagement member 23 (see FIG. 1). ). As a result, the distal end portion 25 of the engaging member 23 is positioned when the split core 42 is moved to the aligned position by the moving mechanism 30 while holding the distal end portion 25 of the engaging member 22 swingable in the stator axial direction. It is arranged at a predetermined position that engages with the groove 45.

  Thus, by providing the placement spring 28, the “placement means” of the present invention can be realized with a simple configuration. Further, when the split core 42 is moved to the alignment position, the distal end portion 25 of the engagement member 23 is arranged at a predetermined position where the arrangement spring 28 is engaged with the positioning groove 45, so that the engagement member 23 and the positioning groove are arranged. 45 can be securely engaged with each other, so that the divided core 42 can be positioned reliably.

Further, in the present embodiment, the arrangement spring 28 is designed to have a length that allows the distal end portion 25 of the engaging member 23 to be arranged at a position that engages in the vicinity of the center position of the positioning groove 45 of the split core 42 described later. (See FIG. 1). Thus, by engaging the distal end portion 25 of the engaging member 23 in the vicinity of the center position of the positioning groove 45, the distal end portion 25 of the engaging member 23 is prevented from being detached from the positioning groove 45, thereby positioning the split core 42. Can be made more reliable.
Note that the other end of the placement spring 28 may be attached to the distal end side or the distal end portion 25 of the main body 24 of the engagement member 23, but by making the other end of the placement spring 28 free as in the present embodiment. When the distal end portion 25 of the engaging member 23 moves upward, it is prevented from being biased downward by the placement spring 28 so that the movement of the distal end portion of the engaging member is not hindered.

  As shown in FIG. 1, the moving mechanism 30 includes a setting mechanism (not shown) for automatically setting the split core 42 into the apparatus 10 by an arm or the like, and an inner peripheral surface 42b of each split core 42 from the inside. An inner circumferential abutting member 31 for contacting the inner circumferential abutting member 31 and a pressing member 33 for pressing the inner circumferential abutting member 31 outward in the stator radial direction are provided. Note that the moving mechanism 30 may not include a set mechanism. In this case, the split core 42 is manually introduced into the apparatus 10, for example.

  As shown in FIG. 2, eighteen inner peripheral contact members 31 are provided so as to correspond to the respective divided cores 42. The inner circumferential contact member 31 is arranged in an annular shape so as to follow the inner circumferential surface of the split core 42. Moreover, as shown in FIG. 1, the inner peripheral surface 31a of each inner peripheral contact member 31 has a tapered shape.

  The pressing member 33 is provided so as to extend along the stator shaft. A tapered portion 33 a that is inclined so as to correspond to the inner peripheral surface 31 a of the inner peripheral contact member 31 is formed on the outer peripheral surface of the pressing member 33. When the pressing member 33 is moved in the axial direction of the stator (downward in FIG. 1), the taper portion 33a of the pressing member 33 slides with the inner peripheral surface 31a of each inner peripheral contact member 31, and the inner peripheral contact member. 31 is pressed in the outward direction of the stator diameter. The inner peripheral abutting member 31 pressed outward in the stator radial direction presses the split core 42 with which each inner peripheral abutting member 31 abuts outward in the stator radial direction. Thereby, the outer peripheral surface 42 a of each divided core 42 is brought into contact with the inner peripheral surface 21 a of the outer peripheral alignment member 21. As a result, the divided cores 42 are aligned in an annular shape along the inner peripheral surface 21 a of the outer peripheral alignment member 21.

Next, a stator formed by using the split core 42 according to the present embodiment by the positioning device 10 described above will be described with reference to FIGS. FIG. 5 is a top view showing a stator formed by the apparatus. FIG. 6 is a plan view showing an outer peripheral surface of a split core provided in the stator.
As shown in FIG. 5, the stator 40 includes a fastening ring 41 formed in a cylindrical shape, and a split core 42 arranged in an annular shape along an inner peripheral surface 41 a of the fastening ring 41. Here, the inner diameter of the fastening ring 41 is designed to be substantially the same as or slightly smaller than the outer diameter when the divided cores 42 are arranged in an annular shape.

  As shown in FIG. 4, the split core 42 includes a yoke portion 43 formed along the inner periphery of the fastening ring 41, and a teeth portion 44 formed so as to protrude from the yoke portion 43 in the axial direction. . The teeth portion 44 is covered with an insulator resin. And the coil is wound around the part covered with resin. In FIG. 4, the coil is omitted for simplicity.

  On the outer peripheral surface 42a of the split core 42, a positioning groove 45 that can be engaged with the engaging member 23 is formed in a V-shaped cross section. As shown in FIG. 6, the positioning groove 45 extends in the center of the outer peripheral surface 42 a to both ends of the outer peripheral surface 42 a in the stator axial direction along the stator axial direction. Thus, by forming the positioning groove 45 along the stator axial direction, the engaging member 23 can be moved in the stator axial direction while being engaged with the positioning groove 45. At this time, the engagement member 23 and the positioning groove 45 are prohibited from relative movement in the circumferential direction. Therefore, the circumferential position of the split core 42 is determined by the engaging member 23. Therefore, by moving the split core 42 in the stator axial direction by the setting mechanism 30, the split core 42 can be set in the apparatus while the circumferential position of the split core 42 is determined by the engaging member 23. Further, since the positioning groove 45 extends to both ends of the outer peripheral surface 42a in the stator axial direction, the distal end portion 25 of the engaging member 23 and the outer peripheral surface 42 of the split core 42 do not interfere with each other when the split core 42 moves. It has become.

Here, a modified example of the split core according to the present embodiment will be described with reference to FIG. FIG. 7 is a plan view showing the outer peripheral surface of the split core according to the modified example.
The split core 52 according to the modified example is different from that of the above embodiment in the shape of the positioning groove 55 formed in the outer peripheral surface 52a. In this split core 52, the positioning grooves 55 are extended along the stator axial direction as in the above embodiment, but both ends of the positioning grooves 55 in the stator axial direction are inside of both ends of the outer peripheral surface 52a in the stator axial direction. Is located. Here, when the positioning groove 45 is extended to both ends of the outer peripheral surface 42a of the split core 42 in the stator axial direction as in the above embodiment, both ends of the positioning groove 45 in the stator axial direction are in the stator axial direction of the split core 42. Appears on both sides. For this reason, when covering the teeth part 44 of the split core 42 with the resin for the insulator, the resin may flow into the groove from both ends of the positioning groove 45 in the stator axial direction.

  On the other hand, according to the split core 52 according to this modification, by positioning the both ends of the positioning groove 55 in the stator axial direction inside the both ends of the outer peripheral surface 52a of the split core 52 in the stator axial direction, Both ends of the stator in the axial direction can be closed. Thereby, when the teeth part 42 of the split core 52 is covered with the resin for the insulator, the resin can be prevented from flowing into the groove from both ends of the positioning groove 55 in the stator axial direction. Therefore, the positioning groove 55 can be prevented from being filled with resin. As a result, the engaging member 23 can be more reliably engaged with the positioning groove 55, so that the divided core 52 can be positioned more reliably.

  In this modified example, both ends of the positioning groove 55 in the stator axial direction are closed. Thereby, when the split core 42 is moved in the stator axial direction and set to the device 10 or removed from the device 10, the front end portion 25 of the engaging member 23 and the outer peripheral surface 42a of the split core 42 interfere with each other. become. However, in the present embodiment, the distal end portion 25 of the engaging member 23 is formed so as to be able to advance and retract by the contact spring 27. Thereby, when the split core 42 is moved in the stator axial direction and set to the device 10 or removed from the device 10, interference between the distal end portion 25 of the engagement member 23 and the outer peripheral surface 42a of the split core 42 is reduced. can do.

  Next, the case where the stator 40 is formed by shrink fitting the split core 42 to the fastening ring 41 using the positioning device 10 having the above configuration will be described with reference to FIGS. FIG. 8 is an explanatory diagram showing a state when the split core is set by the positioning device according to the present embodiment. FIG. 9 is an explanatory diagram showing a state when the split core is positioned by the positioning device. FIG. 10 is an explanatory view showing a state when the fastening ring of the split core is assembled by the positioning device. FIG. 11 is an explanatory view showing a state when the assembly of the split core and the fastening ring is completed by the positioning device. In FIGS. 8 to 10, the coil is omitted for simplicity.

  As shown in FIG. 8, the positioning device 10 sets the split core 42 into the device 10 while moving the split core 42 downward in the stator axial direction by the setting mechanism. At this time, the distal end portion 25 of the engaging member 23 is pressed downward by the lower surface of the split core 42. And the front-end | tip part 25 of the engaging member 23 rock | fluctuates below centering on the base end axis | shaft 26a, contracting the arrangement | positioning spring 28. FIG. Each divided core 42 may be set in the apparatus 10 one by one, or a plurality or all of them may be set in the apparatus 10 at the same time.

  As shown in FIG. 9, when the lower surface of the split core 42 comes into contact with the support member 29, the distal end portion 25 of the engaging member 23 is urged upward in the stator axial direction by the positioning spring 28 and positioned. It is arranged near the center position of the groove 45. Here, in this embodiment, since the distal end portion 25 of the engaging member 23 is held by the arrangement spring 28 so as to be movable in the stator axial direction, the engaging member 23 and the split core that are generated when the split core 42 is moved. 42, for example, interference between the distal end portion 25 of the engaging member 23 and the outer peripheral surface 42a, the lower surface, or the positioning groove 45 of the split core 42 can be mitigated.

  Further, when the engaging member 23 and the positioning groove 45 are engaged, the split core 42 is prohibited from relative movement in the circumferential direction. That is, the circumferential position of the split core 42 is determined. Further, after all the split cores 42 are set in the device 10, the positioning device 10 moves the pressing member 33 downward in the stator axial direction, and aligns the outer peripheral surface 42a of the split core 42 with the outer periphery as described above. It is made to contact | abut to the member 21 (refer FIG. 1). Thereby, the split core 42 can be moved and fixed to the alignment position. As described above, the alignment positions of the split cores 42 (the circumferential position and the radial position in the present embodiment) are determined.

  After the alignment position of the split cores 42 is determined, the positioning device 10 moves the support plate 15 upward in the stator axial direction to move the split cores 42 to the fastening ring 41 held above. The fastening ring 41 may be moved to the positioning device 10 side. At this time, as shown in FIG. 10, the distal end portion 25 of the engaging member 23 swings upward in the stator axial direction about the proximal end shaft 26a as the split core 42 moves. Since the other end of the placement spring 28 is not attached to the tip portion 25, the movement of the tip portion 25 is not hindered.

  Here, the inner diameter of the fastening ring 41 is designed to be approximately the same as or slightly smaller than the outer diameter when the split cores 42 are arranged in an annular shape. The diameter is expanded to such an extent that the split core 42 can be inserted. As a result, the split core 42 is inserted into the fastening ring 41 along the inner periphery of the fastening ring 41 in an annularly aligned state as shown in FIG. Further, since the distal end portion 25 of the engaging member 23 is formed to be able to advance and retract, interference between the member of the positioning device 10 (device support plate 15 and the like) and the distal end portion 25 of the engaging member 25 during insertion is reduced. ing. Then, after the movable split core 42 is completely inserted into the fastening ring 41, the fastening ring 41 is cooled and contracted in diameter. In this way, the stator 40 is formed in which the split core 42 is urged in the axial direction by shrink fitting so as to be tightly integrated.

  Here, the stator 41 is formed by shrink-fitting the split core 42 to the fastening ring 41 while actually positioning using the positioning device 10. As shown in FIG. When the angle θ to the circumferential position B of the split core 42 is measured, the deviation width from the product standard value is reduced to about 1/3 to 1/4 compared with the case where the positioning by the positioning device 10 is not performed. Was. From this result, it has been confirmed that the positioning device 10 according to the present embodiment can effectively prevent the circumferential displacement of the split core 42 during the formation of the stator.

  As described above in detail, according to the positioning device 10 according to the present embodiment, the divided core 42 can be positioned at the aligned position without performing post-processing of components (the divided core 42, the fastening ring 41, and the like). . As a result, automation of assembly of the stator 40 can be facilitated. Further, since it is not necessary to provide a positioning mechanism for the fastening ring 41 that remains as a part after the product, the stator 40 is not enlarged or complicated, and other parts necessary for positioning the split core 42 are left in the product. There is nothing. Further, in this positioning device 10, since the split core 42 can be positioned at the aligned position before the split core 42 is assembled to the fastening ring 41, the split core 42 is urged in the axial direction by shrink fitting to tightly close the core 42. Can be integrated. Thereby, the stator 41 can be reduced in size or the split core 42 can be prevented from rattling. As can be seen from the actual results, it is possible to effectively prevent the circumferential displacement of the split core 42 when the stator 41 is formed.

  It should be noted that the above-described embodiment is merely an example, and does not limit the present invention in any way, and various improvements and modifications can be made without departing from the scope of the invention.

  For example, in the above-described embodiment, the distal end portion 25 of the engaging member 23 is spherical, but depending on the shape of the positioning groove 45 of the split core 42, etc. Can be changed.

  In the above embodiment, the positioning groove 45 of the split core 42 has a V-shaped cross section. However, depending on the shape of the engagement member 25 and the like, the positioning groove 45 can be freely formed like a square cross section or a circular cross section. Can be changed.

  Further, for example, the positioning groove 45 can be formed in an L-shaped cross section and the like, and the circumferential and radial positioning can be performed simultaneously, and the axial length can be shortened and the axial positioning can be performed simultaneously.

  In the above embodiment, the case where the stator 40 is formed by shrink fitting the split core 42 to the fastening ring 41 using the positioning device 10 has been described. For example, the split core 42 is press-fitted into the fastening ring 41. By forming the stator by welding with the divided cores 42 being aligned or forming the stator by aligning the divided cores 42 as described above, the stators tightly integrated by urging the divided cores 42 in the axial direction as described above can be obtained. Obtainable.

It is sectional drawing which shows schematic structure of the positioning device which concerns on this embodiment. It is a top view which shows the positioning device. It is a front view which shows an outer periphery alignment member. It is sectional drawing which shows an engaging member and a division | segmentation core. It is a top view which shows the stator formed with the same apparatus. It is a top view which shows the outer peripheral surface of the split core with which the stator is equipped. It is a top view which shows the outer peripheral surface of the split core which concerns on the example of a change. It is explanatory drawing which shows the mode at the time of the setting of the division | segmentation core by the positioning device which concerns on this embodiment. It is explanatory drawing which shows the mode at the time of positioning of the split core by the positioning device. It is explanatory drawing which shows the mode at the time of assembly | attachment of the fastening ring of the split core by the positioning device. It is explanatory drawing which shows the mode at the time of completion | finish of the fastening ring assembly | attachment of the split core by the positioning device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Positioning device 20 Alignment mechanism (alignment means)
21 outer peripheral alignment member 23 engaging member 24 main body 25 distal end portion 26 proximal end portion 26a proximal end shaft 27 abutting spring (abutting means)
28 Placement spring (placement means)
30 Moving mechanism (moving means)
31 Inner peripheral contact member 31a Inner peripheral surface 33 Press member 33a Tapered portion 40 Stator 41 Fastening ring 41a Inner peripheral surface 42 Split core 42a Outer peripheral surface 42b Inner peripheral surface 45 Positioning groove

Claims (7)

In a positioning device for positioning a split core that is aligned in an annular shape to form a stator,
Alignment means for aligning the divided cores in an annular shape;
Moving means for moving the divided core to an alignment position of the divided core aligned by the alignment means;
The alignment means includes an engaging member that can be engaged with a positioning groove formed on an outer peripheral surface of the split core when the split core is moved to the alignment position by the moving means. The split core positioning device. In the positioning device of the split core according to claim 1,
An abutting means for abutting the distal end portion of the engaging member to the positioning groove when the split core is moved to the aligned position by the moving means while holding the distal end portion of the engaging member so as to be able to advance and retreat. An apparatus for positioning a split core, comprising: The positioning device for a split core according to claim 1 or 2,
While holding the distal end portion of the engaging member movably in the stator axial direction, the distal end portion of the engaging member is engaged with the positioning groove when the split core is moved to the aligned position by the moving means. An apparatus for positioning a split core, comprising an arrangement means for arranging at a predetermined position. In the positioning structure for positioning the split cores aligned in an annular shape to form a stator,
A positioning structure for a split core, wherein a positioning groove that can be engaged with an engaging member provided in an external device is formed on an outer peripheral surface of the split core. In the positioning structure of the split core according to claim 4,
The positioning structure for a split core, wherein the positioning groove is formed along a stator axial direction. In the positioning structure of the split core according to claim 4 or 5,
The split core positioning structure, wherein both ends of the positioning groove in the axial direction of the stator are positioned inside both ends of the outer peripheral surface in the axial direction of the stator. In a positioning method for positioning a split core that is aligned in an annular shape to form a stator,
A method for positioning a split core, wherein the split core is positioned by engaging an engaging member provided in an external device with a positioning groove formed on an outer peripheral surface of the split core.

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