CN111105918B - Compound magnetization device of permanent magnet rotor - Google Patents
Compound magnetization device of permanent magnet rotor Download PDFInfo
- Publication number
- CN111105918B CN111105918B CN201911420522.6A CN201911420522A CN111105918B CN 111105918 B CN111105918 B CN 111105918B CN 201911420522 A CN201911420522 A CN 201911420522A CN 111105918 B CN111105918 B CN 111105918B
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- permanent magnet
- magnet rotor
- iron core
- pole
- magnetic pole
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F13/00—Apparatus or processes for magnetising or demagnetising
- H01F13/003—Methods and devices for magnetising permanent magnets
Abstract
The invention discloses a permanent magnet rotor composite magnetizing device which comprises a bottom plate, wherein a wiring terminal, a magnet structure, a permanent magnet rotor and an ejector pin structure are arranged on the bottom plate, the wiring terminal is connected with the magnet structure, the magnet structure is formed by integrally arranging a main magnetic pole magnet and a Hall magnetic pole magnet, the permanent magnet rotor is detachably arranged in the magnet structure, and the ejector pin structure can eject the permanent magnet rotor out of the magnet structure. The invention has the main magnetic pole and the Hall magnetic pole at the same time, thereby improving the application range and improving the feedback precision of the motor signal.
Description
Technical Field
The invention relates to a magnetizing device, in particular to a composite magnetizing device for a permanent magnet rotor.
Background
The magnetizing device generally comprises a permanent magnet rotor and a magnetizing magnet, the existing magnetizing magnet generally has only one magnetic pole, the application range is small, and the feedback precision of a motor signal is also very low.
Disclosure of Invention
The invention aims to solve the problems and provides a permanent magnet rotor composite magnetizing device.
In order to achieve the purpose, the technical scheme of the invention is as follows:
The permanent magnet rotor composite magnetizing device comprises a bottom plate, wherein a wiring terminal, a magnet structure, a permanent magnet rotor and an ejector pin structure are arranged on the bottom plate, the wiring terminal is connected with the magnet structure, the magnet structure is formed by integrally arranging a main magnetic pole magnet and a Hall magnetic pole magnet, the permanent magnet rotor is detachably arranged in the magnet structure, and the ejector pin structure can eject the permanent magnet rotor out of the magnet structure.
In a preferred embodiment of the present invention, the bottom plate has a plurality of foot pads on its lower surface.
In a preferred embodiment of the present invention, the magnet structure includes a housing, a first iron core and a second iron core, the housing is detachably disposed above the second iron core and is communicated with the second iron core, the first iron core is disposed in the housing, 12-pole windings are wound on the first iron core to form a main pole magnet, 30-pole windings are wound on the second iron core to form a hall pole, the 12-pole windings are connected in series with the 30-pole windings, a mounting cavity is formed between the first iron core and the second iron core, and the permanent magnet rotor is detachably disposed in the mounting cavity.
In a preferred embodiment of the present invention, the 12-pole winding group is encapsulated on the first core by a first filling resin, and the 30-pole winding group is encapsulated on the second core by a second filling resin.
In a preferred embodiment of the present invention, the housing and the second iron core are cylindrical and have the same diameter, the housing is detachably disposed on the upper surface of the second iron core through a first screw, the housing and the second iron core are respectively provided with cavities therein, the first iron core is disposed in the cavity of the housing, the first iron core is also provided with a cavity therein, the cavity in the first iron core and the cavity in the second iron core form a mounting cavity, and the permanent magnet rotor can be inserted into the mounting cavity through the cavity in the housing.
In a preferred embodiment of the present invention, three support columns are disposed on the bottom plate, a connecting plate is disposed on a lower surface of the second iron core, the connecting plate is detachably connected to each support column, and the thimble structure is located below the connecting plate.
In a preferred embodiment of the present invention, the thimble structure includes an ejector plate, and three thimbles, the ejector plate is detachably disposed on the ejector plate, one end of each thimble is fixed on the ejector plate, and the other end of each thimble passes through the second iron core and is connected to the permanent magnet rotor in a matching manner.
In a preferred embodiment of the invention, the second core is connected to the connecting terminals by two magnet wires.
The beneficial effects of the invention are:
the invention has the main magnetic pole and the Hall magnetic pole at the same time, thereby improving the application range and improving the feedback precision of the motor signal.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;
FIG. 4 is a schematic view of a first core head;
fig. 5 is a schematic view of a second core head.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.
Referring to fig. 1 to 5, the permanent magnet rotor composite magnetizing apparatus provided by the present invention includes a base plate 100, a connection terminal 200, a magnet structure 300, a permanent magnet rotor 400, and a thimble structure 500.
And a base plate 100 for mounting the connection terminal 200, the magnet structure 300, the permanent magnet rotor 400, and the thimble structure 500.
A plurality of foot pads 110 are arranged on the lower surface of the bottom plate 100 through hexagonal screws, so that the placing stability is improved.
The connection terminal 200, which is disposed on the base plate 100 through the bolt 210, is connected to the magnet structure 300, and is used for externally connecting a magnetizing power source, and inputting the power source to the magnet structure 300, so as to form a magnetizing field on the magnet structure 300, thereby magnetizing the permanent magnet rotor 400.
The housing 310 is mounted on the second core 330 and locked by a plurality of screws 311, thus facilitating disassembly.
In addition, the housing 310 and the second core 330 have the same shape, cylindrical shape, and the same diameter, so that the housing 310 and the second core 330 are connected to form a cylindrical magnet structure.
The inner parts of the housing 310 and the second iron core 330 are respectively provided with a cavity communicated with each other, the first iron core 320 is arranged in the cavity of the housing 310, the inner part of the first iron core is also provided with a cavity, the cavity in the first iron core and the cavity in the second iron core 330 can form a mounting cavity, and the permanent magnet rotor 400 can penetrate through the cavity in the housing 310 and be inserted into the mounting cavity, so that the mounting is realized.
A 12-pole winding group 340 is wound on the first core 320 to form a main pole magnet, a 30-pole winding group 350 is wound on the second core 330 to form a hall pole, and the 12-pole winding group 340 is connected in series with the 30-pole winding group 350.
The second iron core 330 is connected with the connection terminal 200 through two magnet wires 370, so that after the connection terminal 200 is externally connected with a magnetizing power supply, 10000A of current instantly passes through the 12-pole winding group 340 and the 30-pole winding group 350, and then the 12-pole winding group 340 can generate a 12-pole radial radiation magnetic field on the outer diameter of the permanent magnet rotor 400, the magnetic field can reach 20000Oe, the permanent magnet rotor 400 is magnetized, and after the magnetization, the surface magnetism of the outer diameter of the permanent magnet rotor 400 is distributed into radial 12 poles, namely main magnet poles;
meanwhile, the 30-pole winding group 350 also generates a 30-pole axial radiation magnetic field on the end face of the permanent magnet rotor 400, the magnetic field can reach 20000Oe, the permanent magnet rotor 400 is magnetized, and after the magnetization, the end face of the permanent magnet rotor 400 is distributed into axial 30 poles, namely, hall magnetic poles.
Thus, through the structure, the permanent magnet rotor 400 can magnetize the main magnetic pole and the Hall magnetic pole simultaneously, the application range is greatly enlarged, the feedback precision of the motor signal is improved, and the permanent magnet rotor can be applied to occasions such as automobiles, communication, spaceflight and the like.
In addition, the 12-pole winding group 340 is encapsulated on the first core 320 by the first filling resin 361, and the 30-pole winding group 350 is encapsulated on the second core 330 by the second filling resin 362, so that the magnetization performance can be improved.
A connecting plate 600 is arranged below the second iron core 330, three supporting columns 610 are arranged on the connecting plate 600, and the supporting columns 610 are connected with the base plate 100, so that the magnet structure 300 can be integrally suspended above the base plate 100 through the supporting columns 610, and the thimble structure 500 can be conveniently installed.
The connecting plate 600 is connected with the supporting column 610 through a bolt, and the supporting column 610 is connected with the base plate 100 through a bolt 620, so that the installation and the disassembly are convenient.
The ejector pin structure 500 is disposed below the second iron core 330, is connected to the permanent magnet rotor 400 in a matching manner, and is used for ejecting the permanent magnet rotor 400 after the magnetization in the installation cavity is completed.
The ejector pin structure 500 specifically comprises an ejector pin plate 510, an ejector plate 520 and three ejector pins 530, wherein the ejector pin plate 510 is detachably arranged on the ejector plate 520 and specifically connected through bolts 540, one end of each of the three ejector pins 530 is fixed on the ejector pin plate 510, and the other end of each of the three ejector pins 530 penetrates through the second iron core 330 and is in fit connection with the permanent magnet rotor 440, so that the permanent magnet rotor 400 after the magnetization in the installation cavity can be ejected by pushing the ejector plate 520.
Because this application will magnetize permanent magnet rotor 440 through two magnetic poles (main magnetic pole and hall magnetic pole) complex, but can have the interact between two magnetic fields and lead to the magnetic pole of permanent magnet rotor 400 after magnetizing to distribute disorderly easily, in order to solve this problem, this application through paying creative work and numerous experiments, obtains and can adopt following one mode to solve above-mentioned problem:
the outer diameter D of the permanent magnet rotor 400, the number of poles p1 of the main magnetic pole, the number of poles p2 of the hall magnetic pole, and the distance D between the main magnetic pole and the hall magnetic pole are set by the following formula:
dP1/4P2≤D。
the following are two embodiments of the present application designed using the above formula:
example 1: d design (dP1/4P2 ≤ D)
Example 2: design P2 (dP1/4D ≦ P2)
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A permanent magnet rotor composite magnetizing device is characterized by comprising a bottom plate, wherein a wiring terminal, a magnet structure, a permanent magnet rotor and an ejector pin structure are arranged on the bottom plate, the wiring terminal is connected with the magnet structure, the magnet structure is formed by integrally arranging a main magnetic pole magnet and a Hall magnetic pole magnet, the permanent magnet rotor is detachably arranged in the magnet structure, and the ejector pin structure can eject the permanent magnet rotor out of the magnet structure; the magnet structure comprises a shell, a first iron core and a second iron core, wherein the shell is detachably arranged above the second iron core and is mutually communicated, the first iron core is arranged in the shell, a 12-pole winding group is wound on the first iron core to form a main magnetic pole magnet, a 30-pole winding group is wound on the second iron core to form a Hall magnetic pole, the 12-pole winding group and the 30-pole winding group are connected in series, a mounting cavity is formed between the first iron core and the second iron core, and a permanent magnet rotor is detachably arranged in the mounting cavity;
the second iron core is connected with the connecting terminal through two electromagnetic wires, when the connecting terminal is externally connected with a magnetizing power supply, the 12-pole winding group and the 30-pole winding group instantly pass through current, at the moment, the 12-pole winding group can generate a 12-pole radial radiation magnetic field on the outer diameter of the permanent magnet rotor to magnetize the permanent magnet rotor, and after magnetization, the surface magnetism of the outer diameter of the permanent magnet rotor is distributed into radial 12 poles, namely main magnetic poles; meanwhile, the 30-pole winding group also generates a 30-pole axial radiation magnetic field on the end face of the permanent magnet rotor to magnetize the permanent magnet rotor, and after magnetization, the surface magnetism of the end face of the permanent magnet rotor is distributed into axial 30 poles, namely Hall magnetic poles, so that the permanent magnet rotor can magnetize a main magnetic pole and the Hall magnetic poles at the same time; the permanent magnet rotor can magnetize a main magnetic pole and a Hall magnetic pole at the same time, and the outer diameter D of the permanent magnet rotor, the pole number p1 of the main magnetic pole, the pole number p2 of the Hall magnetic pole and the distance D between the main magnetic pole and the Hall magnetic pole are set by the following formula:
dP1/4P2≤D。
2. The permanent magnet rotor composite magnetizing apparatus of claim 1, wherein a plurality of pads are disposed on the lower surface of the bottom plate.
3. The composite magnetizing apparatus for permanent magnet rotor of claim 1, wherein the 12-pole winding set is encapsulated on the first core by a first filling resin, and the 30-pole winding set is encapsulated on the second core by a second filling resin.
4. The composite magnetizing device of the permanent magnet rotor according to claim 1, wherein the housing and the second iron core are cylindrical and have the same diameter, the housing is detachably disposed on the upper surface of the second iron core through a first screw, the housing and the second iron core are respectively provided with cavities communicating with each other, the first iron core is disposed in the cavity of the housing, the cavity is also disposed in the first iron core, the cavity in the first iron core and the cavity in the second iron core form a mounting cavity, and the permanent magnet rotor can be inserted into the mounting cavity through the cavity in the housing.
5. The composite magnetizing apparatus for permanent magnet rotors according to claim 1, wherein the bottom plate has three supporting pillars, the second core has a connecting plate on its lower surface, the connecting plate is detachably connected to each supporting pillar, and the pin structure is located below the connecting plate.
6. The composite magnetizing apparatus for the permanent magnet rotor according to claim 5, wherein the thimble structure comprises a thimble plate, a push-out plate and three thimbles, the thimble plate is detachably disposed on the push-out plate, one end of each thimble is fixed on the thimble plate, and the other end of each thimble passes through the second iron core and is connected with the permanent magnet rotor in a matching manner.
7. The composite magnetizing apparatus for permanent magnet rotors according to claim 1, wherein the second iron core is connected to the connection terminal through two magnet wires.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911420522.6A CN111105918B (en) | 2019-12-31 | 2019-12-31 | Compound magnetization device of permanent magnet rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911420522.6A CN111105918B (en) | 2019-12-31 | 2019-12-31 | Compound magnetization device of permanent magnet rotor |
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| Publication Number | Publication Date |
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| CN111105918A CN111105918A (en) | 2020-05-05 |
| CN111105918B true CN111105918B (en) | 2022-07-29 |
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| CN201911420522.6A Active CN111105918B (en) | 2019-12-31 | 2019-12-31 | Compound magnetization device of permanent magnet rotor |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108418324A (en) * | 2018-02-26 | 2018-08-17 | 广东威灵电机制造有限公司 | Permanent magnet machine rotor, magnetizing equipment, preparation method and magneto |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0128508B1 (en) * | 1983-06-08 | 1991-04-10 | Hitachi Metals, Ltd. | Method and apparatus for producing anisotropic magnets |
| JP2001309618A (en) * | 2000-04-20 | 2001-11-02 | Nidec Shibaura Corp | Brush-less motor |
| JP2005026385A (en) * | 2003-07-01 | 2005-01-27 | Nippon Densan Corp | Method for magnetization and permanent magnet |
| CN201122482Y (en) * | 2007-11-21 | 2008-09-24 | 横店集团东磁股份有限公司 | Radial radiation magnetizing apparatus |
| DE102017217282B3 (en) * | 2017-09-28 | 2019-03-28 | Bühler Motor GmbH | Permanent magnet rotor, method for its production and magnetization device |
| CN108010658B (en) * | 2017-12-29 | 2020-11-24 | 上海三环磁性材料有限公司 | Radial quadrupole high-precision sine magnetizing clamp |
| CN109616277B (en) * | 2018-12-28 | 2021-02-12 | 上海三环磁性材料有限公司 | End surface multipolar permanent magnet sine wave magnetizing clamp |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108418324A (en) * | 2018-02-26 | 2018-08-17 | 广东威灵电机制造有限公司 | Permanent magnet machine rotor, magnetizing equipment, preparation method and magneto |
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