CN109412365B - High-precision rotor magnetic steel assembly fixture - Google Patents
High-precision rotor magnetic steel assembly fixture Download PDFInfo
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- CN109412365B CN109412365B CN201811471047.0A CN201811471047A CN109412365B CN 109412365 B CN109412365 B CN 109412365B CN 201811471047 A CN201811471047 A CN 201811471047A CN 109412365 B CN109412365 B CN 109412365B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention discloses a high-precision rotor magnetic steel assembly fixture which comprises a base, a positioning plate, pins and bolts, wherein a circular positioning groove is formed in the upper surface of the base, the bottom of a rotor iron core is embedded in the positioning groove and fixedly connected with the positioning groove, the positioning plate can be horizontally embedded in the rotor iron core, a plurality of magnetic steel holes are formed in the outer circular end face of the positioning plate, a plurality of upper pin holes are formed in the surface of the positioning plate, a lower pin hole is formed in the surface of the positioning groove of the base, the pins are sequentially inserted into the upper pin holes and the lower pin holes so as to realize radial positioning between the positioning plate and the base, a connecting hole is formed in the middle part of the positioning plate, a threaded hole is formed in the middle part of the positioning groove of the base, and the bolts are sequentially screwed into the connecting hole and the threaded hole so as to realize axial positioning of the positioning plate and the base. The invention ensures the positioning precision of the magnetic steel by utilizing the hole position precision of the upper pin hole of the positioning plate, has accurate indexing of the angle of the magnetic steel, can meet the technical requirements and has high mounting and attaching efficiency.
Description
Technical Field
The invention relates to the technical field of motor tools, in particular to a high-precision rotor magnetic steel assembly tool.
Background
At present, in the motor industry, when the inner wall of a rotor iron core is stuck with magnetic steel, the magnetic steel is positioned in a mode of using a positioning groove or a profiling, and the method easily causes inaccurate indexing of the angle of the magnetic steel, so that the technical requirement cannot be met. In addition, the existing magnetic steel assembly fixture takes a first row of first grooves as a reference, and is then attached to the first row in sequence; because of the length tolerance of the magnetic steel, the gap of the last magnetic steel is often too large or too small; grinding the magnetic steel or knocking off the magnetic steel and re-attaching the magnetic steel; the process has the advantages of high magnetic steel rejection rate, time-consuming assembly and pasting and low efficiency.
Disclosure of Invention
The technical problem to be solved by the invention is to provide the high-precision rotor magnetic steel assembly fixture aiming at the defects in the prior art, the high-precision rotor magnetic steel assembly fixture ensures the positioning precision of magnetic steel by utilizing the hole position precision of the upper pin hole of the positioning plate, the indexing of the magnetic steel angle is accurate, the technical requirement can be met, and the assembly and pasting efficiency is high.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
the utility model provides a high accuracy rotor magnet steel assembly fixture, includes base, locating plate, round pin post and bolt, the upper surface of base is equipped with the circular locating groove with rotor core bottom assorted, rotor core's bottom embedding is in locating groove and with locating groove fixed connection, thereby the external diameter of locating plate slightly is less than rotor core's internal diameter makes locating plate ability horizontally inlay in rotor core's inside, the outer disc face of locating plate is equipped with a plurality of evenly and the interval distribution's of following its circumferencial direction magnet steel hole, the surface of locating plate is equipped with the hole heart in a plurality of last pin post holes and a plurality of last pin post hole on same circle, and the adjacent 2 last pin post hole intervals are the same, the surface of locating groove of base is equipped with down the pin post hole, thereby the pin post inserts the radial location between locating plate and the base in proper order in last pin post hole of locating plate and locating groove, thereby the middle part of locating plate is equipped with the connecting hole, the middle part of locating groove of base is equipped with the screw hole, thereby the bolt screw in connecting hole of locating plate in proper order realizes the axial location of locating plate and base with the base.
As a further improved technical scheme of the invention, the positioning plate is round, and the base is round.
As a further improved technical scheme of the invention, the number of the magnetic steel holes is 4, and the 4 magnetic steel holes are uniformly and alternately distributed on the outer circular end face of the positioning plate.
As a further improved technical scheme of the invention, the number of the upper pin holes of the positioning plate is 12, wherein 6 upper pin holes and the rest 6 upper pin holes are symmetrically arranged, and the distances between every two adjacent 2 upper pin holes in the 6 upper pin holes which are symmetrically arranged are the same.
As a further improved technical scheme of the invention, 12 upper pin holes are round holes, and the hole centers of the 12 upper pin holes are on the same circle.
As a further improved technical scheme of the invention, the number of the pins is 2, the number of the lower pin holes on the surface of the positioning groove is 2, the 2 lower pin holes are symmetrically arranged, and the 2 lower pin holes are positioned right below the 2 upper pin holes.
As a further improved technical scheme of the invention, the number of the bolts is 6, and the lengths of the 6 bolts are different.
According to the technical scheme of the invention, a plurality of first fixing holes are formed in the positioning groove of the base, a plurality of second fixing holes matched with the first fixing holes are formed in the bottom of the rotor core, threads are arranged in the second fixing holes, and the first fixing holes and the second fixing holes are fixedly connected through screws so as to realize the fixed connection between the positioning groove of the base and the bottom of the rotor core.
As a further improved technical scheme of the invention, the first fixing hole is a countersunk hole.
As a further improved technical scheme of the invention, the number of the first fixing holes is 8.
The beneficial effects of the invention are as follows:
(1) The invention ensures the positioning precision of the magnetic steel by utilizing the hole position precision of the upper pin hole of the positioning plate, has accurate indexing of the angle of the magnetic steel, can meet the technical requirements and has high mounting and attaching efficiency.
(2) According to the invention, the positioning plate is positioned in the horizontal direction (namely radial positioning) through the pin, and the positioning plate is positioned in the up-down direction (namely axial positioning) through the bolt, so that the position of attaching the magnetic steel on the inner wall of the rotor core is more accurate through the magnetic steel Kong Weizhun.
(3) The positioning plate is provided with the 4 magnetic steel holes, the circumference of the 4 magnetic steel holes is divided into 4 equal parts, and when the positioning plate is operated, the 4 magnetic steels are firstly pasted into the 4 magnetic steel holes, so that the phenomenon that the gap of the last magnetic steel is too large or too small when the rest magnetic steels are pasted by taking the 4 magnetic steels as references is avoided, the magnetic steel angle indexing is more accurate, the technical requirements can be met, and the pasting efficiency is higher.
Drawings
Fig. 1 is an exploded view of the present invention.
Fig. 2 is a top view of the present invention after positioning plates are placed in the inner holes of the rotor core.
Fig. 3 is a sectional view of the present invention when the 6 th row magnetic steel is attached.
Fig. 4 is a schematic structural view of the locating plate of the present invention.
Fig. 5 is a schematic structural view of the base of the present invention.
Fig. 6 is a sectional view A-A of fig. 5.
Detailed Description
The following further describes embodiments of the present invention with reference to fig. 1 to 6:
referring to fig. 1 and 2, a high-precision rotor magnetic steel assembly fixture comprises a base 1, a positioning plate 4, a pin 5 and bolts (not shown in the drawings), wherein the upper surface of the base 1 is provided with a circular positioning groove 2 matched with the bottom of a rotor core 3, the bottom of the rotor core 3 is embedded in the positioning groove 2 and fixedly connected with the positioning groove 2, the outer diameter of the positioning plate 4 is slightly smaller than the inner diameter of the rotor core 3, so that the positioning plate 4 can be horizontally embedded in the rotor core 3, the outer circumferential end surface of the positioning plate 4 is provided with a plurality of magnetic steel holes 7 which are uniformly distributed at intervals along the circumferential direction, the surface of locating plate 4 is equipped with a plurality of upper pin holes 6 and the hole heart of a plurality of upper pin holes 6 is on same circle, and adjacent 2 upper pin holes 6 interval is the same, the surface of the constant head tank 2 of base 1 is equipped with down pin hole 9, thereby the radial positioning between locating plate 4 and the base 1 is realized to the upper pin hole 6 of locating plate 4 and the lower pin hole 9 of constant head tank 2 that the pin 5 inserts in proper order, the middle part of locating plate 4 is equipped with connecting hole 8, the middle part of the constant head tank 2 of base 1 is equipped with screw hole 11 (as shown in fig. 5), thereby the connecting hole 8 of bolt screw in locating plate 4 and the screw hole 11 of base 1 realize the axial positioning of locating plate 4 and base 1 in proper order.
In this embodiment, the positioning plate 4 is circular, and the base 1 is circular.
In this embodiment, referring to fig. 4, the number of the magnetic steel holes 7 is 4, and the 4 magnetic steel holes 7 are uniformly and alternately distributed on the outer circumferential end surface of the positioning plate 4.
In this embodiment, referring to fig. 4, the number of the upper pin holes 6 of the positioning plate 4 is 12, and the 6 upper pin holes 6 and the remaining 6 upper pin holes 6 are symmetrically arranged with respect to one diameter of the positioning plate 4 as a center, and the distances between two adjacent 2 upper pin holes 6 in the 6 upper pin holes 6 symmetrically arranged are the same.
In this embodiment, the 12 upper pin holes 6 are circular holes, and the centers of the 12 upper pin holes 6 are on the same circle.
In this embodiment, referring to fig. 1, the number of the pins 5 is 2, referring to fig. 5 and 6, the number of the lower pin holes 9 on the surface of the positioning groove 2 is 2, the 2 lower pin holes 9 are symmetrically arranged with the center of the positioning groove 2 as the center, and the 2 lower pin holes 9 are located right below the 2 symmetrical upper pin holes 6.
In this embodiment, the number of bolts is 6, and the lengths of the 6 bolts are different.
In this embodiment, referring to fig. 5 and 6, a plurality of first fixing holes 10 are provided at the edge of the positioning groove 2 of the base 1, a plurality of second fixing holes matched with the first fixing holes 10 are provided at the bottom of the rotor core 3, threads are provided in the second fixing holes, and the first fixing holes 10 and the second fixing holes are fixedly connected by screws so as to realize the fixed connection between the positioning groove of the base 1 and the bottom of the rotor core 3.
In this embodiment, referring to fig. 6, the first fixing hole 10 is a countersunk hole.
In this embodiment, referring to fig. 5, the number of the first fixing holes 10 is 8, and the centers of the 8 first fixing holes 10 are on the same circle.
In this embodiment, the rotation angle between the centers of two adjacent upper pin holes 6 on the positioning plate 4 is 19 degrees, the magnetic steel 12 in this embodiment is arc-shaped, the angle between two sides of the magnetic steel 12 is 18 degrees, and then the number of the mounting of the magnetic steel 12 in each row of circumferential directions is as follows: 360 degrees divided by 18 degrees is equal to 20 blocks, and the rotation angle between the magnetic steels 12 of two adjacent rows is 1 degree (i.e. 19 degrees minus 18 degrees). The positioning accuracy of the magnetic steel 12 is ensured through the hole position accuracy of the plurality of upper pin holes 6 of the positioning plate 4 and the angle of the magnetic steel 12, so that the rotation angle of the magnetic steel 12 in two adjacent rows is always kept at 1 degree, the indexing of the magnetic steel angle is accurate, the technical requirement can be met, and the mounting and pasting efficiency is high. The number of the upper pin holes 6 of the positioning plate 4 in this embodiment is 12, wherein 6 upper pin holes 6 and the remaining 6 upper pin holes 6 are symmetrically arranged, and each time the magnetic steel 12 is attached, 2 pins 5 are respectively inserted into 2 symmetrical upper pin holes 6, so that the radial positioning is more stable. Because the number of the upper pin holes 6 which are symmetrically arranged is 6, when the magnetic steel 12 is pasted each time, the pins 5 are inserted into different upper pin holes 6, so that 6 rows of the magnetic steel 12 pasted by the rotor core 3 of the embodiment are total, the number of the rows of the magnetic steel 12 is equal to the number of the upper pin holes 6 which are symmetrically arranged, and the number of the upper pin holes 6 of the embodiment can be automatically changed according to the requirement of the number of the rows of the pasted magnetic steel 12.
The application method of the embodiment is as follows: the rotor core 3 is firstly placed in the positioning groove 2 of the base 1, positioned with the spigot of the positioning groove 2 and the end face is close to the flat, and then the rotor core 3 is fixed in the positioning groove 2 through screws. And then, the positioning plate 4 is placed on the inner side of the rotor core 3 and is in clearance fit with the inner hole wall of the rotor core 3, when the first row of magnetic steel 12 is pasted, the positioning plate 4 is positioned at the bottom of the inner side of the rotor core 3, the alignment of the first upper pin holes 6 in the 6 upper pin holes 6 which are symmetrically arranged on the positioning plate 4 and the lower pin holes 9 of the base 1 is ensured, at the moment, 2 upper pin holes 6 are aligned with 2 lower pin holes 9, 2 pins 5 are respectively inserted, the radial positioning of the positioning plate 4 is ensured, and the positioning plate 4 is prevented from horizontally shaking in the rotor core 3. Taking a shorter bolt, sequentially screwing in a connecting hole 8 of a positioning plate 4 and a threaded hole 11 of a base 1 through the bolt, locking the positioning plate 4, enabling the positioning plate 4 to be axially positioned, preventing the positioning plate 4 from shaking up and down in a rotor core 3, taking 4 magnetic steels 12, coating glue on the surfaces of the magnetic steels 12, sequentially inserting the magnetic steels 12 into the 4 magnetic steel holes 7 of the positioning plate 4, pasting the 4 magnetic steels 12 on the inner wall of the rotor core 3, enabling the 4 magnetic steels 12 to be positioned at the bottom of the rotor core 3, enabling the 4 magnetic steels 12 to be positioned in the circumferential direction of a first row and dividing the circumferential direction of the first row into 4 equal parts; the pin 5, the bolts and the positioning plate 4 are disassembled, 4 magnetic steels 12 are used as references, then the rest magnetic steels 12 of the first row are sequentially attached to the 4 magnetic steels 12, and the attachment of the first row of magnetic steels 12 is completed, namely 20 blocks. According to the same method, the positioning plate 4 is placed in the rotor core 3, the bottom wall of the positioning plate 4 leans against the upper surface of the first row of magnetic steel 12, the positioning plate 4 rotates 19 degrees relative to the last position, namely, the alignment of the second upper pin holes 6 in the 6 upper pin holes 6 which are symmetrically arranged on the positioning plate 4 with the lower pin holes 9 of the base 1 is ensured, 2 upper pin holes 6 are aligned with 2 lower pin holes 9 at the moment, 2 pins 5 are respectively inserted, the positioning plate 4 is ensured to be positioned radially, the positioning plate 4 is prevented from shaking horizontally, a bolt longer than a first used bolt is taken, the positioning plate 4 is tightly pressed on the first row of magnetic steel 12 through the bolt, the 4 magnetic steel holes 7 of the positioning plate 4 are prevented from shaking up and down, the magnetic steel 12,4 magnetic steel 12 are inserted into the 4 magnetic steel holes 7 of the positioning plate 4 and are adhered on the inner wall of the rotor core 3, the 4 magnetic steel 12 are tightly adhered on the first row of magnetic steel 12 and are positioned in the circumferential direction of the second row, the pin 5 and the positioning plate 4 are respectively inserted, the positioning plate 4 and the second row of magnetic steel 12 are tightly adhered on the second row of magnetic steel 12, and then the rest of magnetic steel 12 is sequentially adhered on the second row of magnetic steel 12, and the rest of magnetic steel 12 is sequentially assembled and the positioning plate 4 is tightly adhered on the second row of magnetic steel 12. The rest 4 rows of magnetic steels 12 are all pasted according to the method. Referring to fig. 3, fig. 3 is a sectional view (bolts are not shown) of the 6 th row magnetic steel 12 when attached. Every time the positioning plate 4 is placed in the rotor core 3, the positioning plate 4 needs to be rotated 19 degrees relative to the previous time, and radial positioning is performed based on the other upper pin hole 6. And each time when 4 magnetic steels 12 are attached, the positioning plate 4 is pressed on the upper row of magnetic steels 12 through bolts. The lengths of the 6 bolts are different and are designed to be matched with different heights of the positioning plate 4 each time. Since the rotation angle between the centers of the two adjacent upper pin holes 6 in this embodiment is 19 degrees and the angle of the magnetic steel 12 is 18 degrees, the rotation angle between the two adjacent rows of magnetic steels 12 is 1 degree. The technical requirement that the rotation angle of two adjacent rows of magnetic steel 12 is 1 degree all the time can be guaranteed, and the rotation angle between the hole centers of two adjacent upper pin holes 6 of the locating plate 4 can be changed according to the change of the degree of the design requirement, so that the design requirement is met. The positioning plate 4 of this embodiment has 4 magnetic steel holes 7, and the circumference is divided into 4 equal parts by the 4 magnetic steel holes 7, so that the phenomenon that the gap of the last magnetic steel 12 is too large or too small can not occur when the rest magnetic steels 12 in the same row are pasted with the 4 magnetic steels 12 as references. The magnetic steel 12 has more accurate angle indexing, can reach technical requirements, and has higher mounting and pasting efficiency.
The scope of the present invention includes, but is not limited to, the above embodiments, and any alterations, modifications, and improvements made by those skilled in the art are intended to fall within the scope of the invention.
Claims (7)
1. The utility model provides a high accuracy rotor magnet steel assembly fixture, its characterized in that includes base, locating plate, round locating groove with rotor core bottom assorted is equipped with to the upper surface of base, rotor core's bottom imbeds in the locating groove and with locating groove fixed connection, thereby the external diameter of locating plate is slightly less than rotor core's internal diameter makes the locating plate can horizontally inlay in rotor core's inside, the outer disc terminal surface of locating plate is equipped with a plurality of evenly and the spaced apart distribution's in its circumferencial direction magnet steel hole, the surface of locating plate is equipped with a plurality of upper pin holes and the hole heart of a plurality of upper pin holes is on same circle, adjacent 2 upper pin hole intervals are the same, the surface of locating groove of base is equipped with down pin hole, the pin inserts the upper pin hole of locating plate and the lower pin hole of locating groove in proper order thereby realizes radial location between locating plate and the base, the middle part of locating plate is equipped with the connecting hole, the middle part of locating groove of base is equipped with the screw hole, the bolt screws in proper order to realize the axial direction of locating plate and base screw hole and locating plate;
the positioning plate is round, and the base is round;
the number of the magnetic steel holes is 4, and the 4 magnetic steel holes are uniformly and alternately distributed on the outer circular end surface of the positioning plate;
the upper pin holes of the positioning plate are 12 in number, 6 upper pin holes and the rest 6 upper pin holes are symmetrically arranged, and the distances between every two adjacent 2 upper pin holes in the 6 upper pin holes are the same.
2. The high-precision rotor magnetic steel assembly tool according to claim 1, wherein 12 upper pin holes are round holes, and the hole centers of the 12 upper pin holes are on the same circle.
3. The high-precision rotor magnetic steel assembly fixture according to claim 2, wherein the number of the pins is 2, the number of the lower pin holes on the surface of the positioning groove is 2, the 2 lower pin holes are symmetrically arranged, and the 2 lower pin holes are located right below 2 upper pin holes.
4. The high-precision rotor magnetic steel assembly fixture according to claim 3, wherein the number of the bolts is 6, and the lengths of the 6 bolts are different.
5. The high-precision rotor magnetic steel assembly fixture according to claim 1, wherein a plurality of first fixing holes are formed in the positioning groove of the base, a plurality of second fixing holes matched with the first fixing holes are formed in the bottom of the rotor core, threads are arranged in the second fixing holes, and the first fixing holes and the second fixing holes are fixedly connected through screws so that the positioning groove of the base and the bottom of the rotor core are fixedly connected.
6. The high-precision rotor magnetic steel assembly fixture of claim 5, wherein the first fixing hole is a counter bore.
7. The high-precision rotor magnetic steel assembly fixture according to claim 5, wherein the number of the first fixing holes is 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811471047.0A CN109412365B (en) | 2018-12-04 | 2018-12-04 | High-precision rotor magnetic steel assembly fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811471047.0A CN109412365B (en) | 2018-12-04 | 2018-12-04 | High-precision rotor magnetic steel assembly fixture |
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| CN109412365A CN109412365A (en) | 2019-03-01 |
| CN109412365B true CN109412365B (en) | 2023-10-20 |
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| CN201811471047.0A Active CN109412365B (en) | 2018-12-04 | 2018-12-04 | High-precision rotor magnetic steel assembly fixture |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109698053B (en) * | 2019-03-14 | 2024-04-30 | 常州富兴机电有限公司 | High-precision magnetizing and positioning tool |
| CN111130288B (en) * | 2019-12-16 | 2021-04-13 | 北京航天控制仪器研究所 | Method and device for bonding and positioning insulating end plates of electromagnetic element iron core |
| JP2024017232A (en) * | 2022-07-27 | 2024-02-08 | 株式会社三井ハイテック | Manufacturing method of laminated iron core |
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