CN112530658B - Integrated magnetizing method for Halbach array magnet assembly - Google Patents
Integrated magnetizing method for Halbach array magnet assembly Download PDFInfo
- Publication number
- CN112530658B CN112530658B CN202011359021.4A CN202011359021A CN112530658B CN 112530658 B CN112530658 B CN 112530658B CN 202011359021 A CN202011359021 A CN 202011359021A CN 112530658 B CN112530658 B CN 112530658B
- Authority
- CN
- China
- Prior art keywords
- halbach array
- magnetizing
- finished product
- iron core
- blank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
The invention discloses an integrated magnetizing method of a Halbach array magnet assembly, which comprises the following steps: 1) selecting a proper blank; 2) firstly, processing the size of a blank in an assembling direction to an appointed size; 3) assembling the blank in a Halbach array according to different magnetization directions to form a Halbach array component; 4) processing the assembled Halbach array assembly to a required size to form a Halbach array semi-finished product; 5) carrying out surface treatment on the Halbach array semi-finished product; 6) and integrally magnetizing the half-finished product of the Halbach array after surface treatment to form the Halbach array magnet. The invention has the beneficial effects that: the Halbach array magnet is assembled in a non-magnetizing mode, the influence of repulsive force is avoided, the operation safety coefficient of workers is increased, and the assembly difficulty is greatly reduced.
Description
Technical Field
The invention relates to the technical field of Halbach array magnet assembly, in particular to an integrated magnetizing method of a Halbach array magnet assembly.
Background
The Halbach Array is a magnet structure, is an approximate ideal structure in engineering, and the permanent magnets with different magnetization directions are arranged according to a certain sequence, so that the magnetic field of a working surface is obviously enhanced, and the magnetic field of a non-working surface is obviously weakened. The goal is to produce the strongest magnetic field with the minimum number of magnets while reducing the impact of non-working face stray fields on other components.
Halbach arrays were first proposed in 1979 by professor Klaus Halbach, lawrence berkeley national laboratory, usa, and were mainly applied to high-energy physical fields such as particle accelerators, free electron laser devices, and synchrotron radiation devices. Due to its excellent magnetic field distribution characteristics, the application range is gradually expanded to industrial fields such as nuclear magnetic resonance, magnetic levitation, permanent magnet special motors, and the like.
At present, the manufacturing method of the Halbach structure is to magnetize magnets with different magnetization directions, then position the magnets through special tools, and bond the magnets together through glue to form a magnetic component with specific magnetic field distribution. Since each magnet has a specific magnetization direction, when the magnets are arranged in different directions, a large repulsive force exists between the magnets. At present, the assembly of the magnet is mainly still manually assembled by hands, and because strong magnetism generates great force, great difficulty is brought to assembly, reprocessing, coating and the like are difficult to realize after assembly, and the mass production is not facilitated.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides an integrated magnetizing method of a Halbach array magnet assembly, which is reasonable in structural design.
The technical scheme of the invention is as follows:
an integrated magnetizing method of a Halbach array magnet assembly is characterized by comprising the following steps:
1) selecting a proper blank;
2) firstly, processing the size of a blank in an assembling direction to an appointed size;
3) assembling the blank in a Halbach array according to different magnetization directions to form a Halbach array component;
4) processing the assembled Halbach array assembly to a required size to form a Halbach array semi-finished product;
5) carrying out surface treatment on the Halbach array semi-finished product;
6) and integrally magnetizing the half-finished product of the Halbach array after surface treatment to form the Halbach array magnet.
The integrated magnetizing method of the Halbach array magnet assembly is characterized in that the step 2) specifically comprises the following steps:
2.1) processing the blank in the vertical orientation direction to a specified size;
2.2) processing the blank in the left and right orientation directions to a specified size.
The integrated magnetizing method of the Halbach array magnet assembly is characterized in that the step 3) specifically comprises the following steps: and bonding and assembling the processed blanks in the vertical orientation direction and the horizontal orientation direction according to a Halbach array.
The integrated magnetizing method of the Halbach array magnet assembly is characterized in that the step 4) specifically comprises the following steps: the width and height directions of the Halbach array assembly are processed to required sizes.
The integrated magnetizing method of the Halbach array magnet assembly is characterized in that the step 5) specifically comprises the following steps: and (4) performing protective treatment on the surface of the Halbach array semi-finished product, such as electroplating or epoxy spraying.
The integrated magnetizing method of the Halbach array magnet assembly is characterized in that the step 6) specifically comprises the following steps:
6.1) carrying out one-time magnetization on the magnet oriented in the horizontal direction in the Halbach array semi-finished product through a magnetizing clamp;
6.2) carrying out one-time magnetization on the magnets oriented in the vertical direction in the Halbach array semi-finished product through a magnetizing clamp.
The integrated magnetizing method for the Halbach array magnet assembly is characterized in that the magnetizing clamp in the step 6) comprises an upper magnetizing seat, a lower magnetizing seat, an iron core and a lead, wherein the iron core is respectively arranged in the upper magnetizing seat and the lower magnetizing seat, and the lead is wound on the iron core along an S shape.
The integrated magnetizing method of the Halbach array magnet assembly is characterized in that the current direction of the wire in the lower magnetizing base is opposite to the current direction of the wire in the vertical magnetizing base in the step 6.2) when the magnetization is performed in the horizontal direction in the step 6.1).
The invention has the beneficial effects that:
1) the Halbach array magnetic assembly is assembled in a non-magnetizing mode, the influence of repulsive force is avoided, the operation safety coefficient of workers is increased, and the assembly difficulty is greatly reduced.
2) The Halbach array magnet can be integrally machined after being assembled, and assembly deviation is eliminated.
3) The Halbach array magnetic assembly which is assembled after non-magnetizing is magnetized in two steps, so that the magnetization direction distribution which accords with the Halbach array characteristics can be obtained, and the functional effect of the Halbach assembly is realized.
4) The magnetizing fixture can perform one-time magnetizing in the horizontal direction or the vertical direction, so that two-step integrated magnetizing of the Halbach array magnetic assembly is realized, and the magnetizing efficiency is further improved.
Drawings
FIG. 1 is a schematic view of the step 2.1) processing of the present invention;
FIG. 2 is a schematic view of the step 2.2) processing of the present invention;
FIG. 3 is a schematic view of step 3) installation of the present invention;
FIG. 4 is a schematic view of the step 4) process of the present invention;
FIG. 5 is a schematic view of a Halbach array magnet configuration of the present invention;
FIG. 6 is a schematic view of the magnetizing fixture according to the present invention;
FIG. 7 is a schematic view of the direction of the horizontal magnetizing current according to the present invention;
FIG. 8 is a schematic view of the direction of the vertical magnetizing current in accordance with the present invention;
in the figure: 1-upper magnetizing base, 2-lead, 3-Halbach array magnet, 4-lower magnetizing base and 5-iron core.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1 to 8, an integrated magnetizing method for halbach array magnet assembly includes the following steps:
1) a neodymium iron boron magnet blank or a samarium cobalt magnet blank is selected.
2) Firstly, processing the size of a blank in an assembling direction to an appointed size;
2.1) processing the blank in the vertical orientation direction to a specified size;
2.2) processing the blank in the left and right orientation directions to a specified size.
3) Assembling the blank in a Halbach array according to different magnetization directions to form a Halbach array component;
3.1) bonding and assembling the processed blanks in the vertical orientation direction and the horizontal orientation direction according to a Halbach array.
4) Processing the assembled Halbach array assembly to a required size to form a Halbach array semi-finished product;
4.1) processing the width direction and the height direction of the Halbach array assembly to eliminate assembly deviation.
5) Carrying out surface treatment on the Halbach array semi-finished product to form a Halbach array finished product;
5.1) electroplating and spraying epoxy on the surface of the Halbach array semi-finished product.
6) Integrally magnetizing the Halbach array finished product to form a Halbach array magnet;
6.1) carrying out one-time magnetization on the magnet oriented in the horizontal direction in the Halbach array finished product through a magnetizing clamp;
6.2) carrying out one-time magnetization on the magnets oriented in the vertical direction in the Halbach array finished product through a magnetizing clamp.
Wherein the magnetization in the horizontal direction in the step 6.1) is opposite to the magnetization in the vertical direction in the step 6.2), and the current direction of the wire in the lower magnetizing base is opposite in the process.
The magnetizing fixture in the step 6) comprises an upper magnetizing seat 1, a lower magnetizing seat 4, an iron core 5 and a lead 2, wherein the iron core 5 is respectively arranged in the upper magnetizing seat 1 and the lower magnetizing seat 4, and the lead 2 is wound on the iron core 5 along an S shape; when magnetizing, only the half-finished Halbach array is placed on the plane of the lead 2; the magnetizing parameters are as follows: the magnetizing apparatus voltage is: 500-3000V; the capacitance is: 250-; the current is as follows: 5000-.
Comparative example:
halbach array consisting of 5 8 × 8N 45 squares is taken as an example:
the traditional magnetizing mode is as follows: firstly, processing a magnet with a specific size and a specific magnetization direction → magnetizing according to the specified magnetization direction → assembling the Halbach array.
Dimensional deviations after assembly in both ways are shown in the following table:
Claims (6)
1. an integrated magnetizing method of a Halbach array magnet assembly is characterized by comprising the following steps:
1) selecting a proper blank;
2) firstly, processing the size of a blank in an assembling direction to an appointed size;
3) assembling the blank in a Halbach array according to different magnetization directions to form a Halbach array component;
4) processing the assembled Halbach array assembly to a required size to form a Halbach array semi-finished product;
5) carrying out surface treatment on the Halbach array semi-finished product;
6) integrally magnetizing the half-finished Halbach array product subjected to surface treatment to form a Halbach array magnet;
the step 6) is specifically as follows:
6.1) carrying out one-time magnetization on the magnet oriented in the horizontal direction in the Halbach array semi-finished product through a magnetizing clamp;
6.2) carrying out one-time magnetization on the magnet oriented in the vertical direction in the Halbach array semi-finished product through a magnetization clamp;
the magnetizing fixture comprises an upper magnetizing seat, a lower magnetizing seat, an iron core and a lead, wherein the iron core is respectively arranged in the upper magnetizing seat and the lower magnetizing seat, and the lead is wound on the iron core in the upper magnetizing seat and the lower magnetizing seat along an S shape; during magnetizing, the Halbach array semi-finished product is placed on the plane of a lead wound on the iron core in the lower magnetizing seat; in the step 6.1), each turn of the wire wound on the iron core in the upper magnetizing base is opposite to the current direction of the corresponding turn of the wire wound on the iron core in the corresponding lower magnetizing base; in the step 6.2), each turn of the lead wire wound on the iron core in the upper magnetizing base has the same current direction as the corresponding turn of the lead wire wound on the iron core in the corresponding lower magnetizing base; and 6.1) magnetizing in the horizontal direction is opposite to the current direction of the wire in the lower magnetizing seat when magnetizing in the vertical direction in the step 6.2).
2. The integrated magnetizing method for halbach array magnet assemblies according to claim 1, wherein the step 2) is specifically as follows:
2.1) processing the blank in the vertical orientation direction to a specified size;
2.2) processing the blank in the left and right orientation directions to a specified size.
3. The integrated magnetizing method for halbach array magnet assemblies according to claim 2, wherein the step 3) is specifically as follows: and bonding and assembling the processed blanks in the vertical orientation direction and the horizontal orientation direction according to a Halbach array.
4. The integrated magnetizing method for halbach array magnet assemblies according to claim 1, wherein the step 4) is specifically as follows: the Halbach array assembly is machined to the required dimensions in both the width and height directions.
5. The integrated magnetizing method for halbach array magnet assemblies according to claim 1, wherein the step 5) is specifically: and performing protection treatment on the surface of the Halbach array semi-finished product.
6. The integrated magnetizing method for halbach array magnet assembly as claimed in claim 5, wherein the shielding treatment is plating or spraying epoxy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011359021.4A CN112530658B (en) | 2020-11-27 | 2020-11-27 | Integrated magnetizing method for Halbach array magnet assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011359021.4A CN112530658B (en) | 2020-11-27 | 2020-11-27 | Integrated magnetizing method for Halbach array magnet assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112530658A CN112530658A (en) | 2021-03-19 |
| CN112530658B true CN112530658B (en) | 2022-09-27 |
Family
ID=74994157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011359021.4A Active CN112530658B (en) | 2020-11-27 | 2020-11-27 | Integrated magnetizing method for Halbach array magnet assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112530658B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113903542B (en) * | 2021-09-02 | 2022-05-20 | 华中科技大学 | Magnetizing method and device for linear Halbach array |
| CN114352616B (en) * | 2021-12-31 | 2022-07-19 | 哈尔滨工业大学 | Halbach array assembling method for magnetic levitation moving table |
| CN114582584A (en) * | 2022-03-23 | 2022-06-03 | 金力永磁(宁波)科技有限公司 | Halbach magnet assembly and preparation method thereof |
| CN115036095A (en) * | 2022-06-01 | 2022-09-09 | 浙江英洛华引力科技有限公司 | Magnetizing device for magnet |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109671546A (en) * | 2017-10-13 | 2019-04-23 | 宁波火山电气有限公司 | Magnet and its manufacturing method |
| CN110977843A (en) * | 2019-12-30 | 2020-04-10 | 深圳核心医疗科技有限公司 | Assembling jig and assembling method for Halbach array magnet |
| CN111009407A (en) * | 2019-12-31 | 2020-04-14 | 杭州智见控股集团有限公司 | Assembling process method of Halbach array magnet assembly |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110678943B (en) * | 2017-05-26 | 2022-04-26 | 日东电工株式会社 | Method for manufacturing magnet and method for magnetizing magnet |
-
2020
- 2020-11-27 CN CN202011359021.4A patent/CN112530658B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109671546A (en) * | 2017-10-13 | 2019-04-23 | 宁波火山电气有限公司 | Magnet and its manufacturing method |
| CN110977843A (en) * | 2019-12-30 | 2020-04-10 | 深圳核心医疗科技有限公司 | Assembling jig and assembling method for Halbach array magnet |
| CN111009407A (en) * | 2019-12-31 | 2020-04-14 | 杭州智见控股集团有限公司 | Assembling process method of Halbach array magnet assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112530658A (en) | 2021-03-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112530658B (en) | Integrated magnetizing method for Halbach array magnet assembly | |
| CN106165257B (en) | Arch flat thin magnet, permanent magnet pieces, permanent magnet assembly, permanent magnet application apparatus and motor | |
| US7228616B2 (en) | System and method for magnetization of permanent magnet rotors in electrical machines | |
| CN111009407A (en) | Assembling process method of Halbach array magnet assembly | |
| US9780634B2 (en) | Low cost multi-coil linear actuator configured to accommodate a variable number of coils | |
| US11522421B2 (en) | Radially anisotropic multipolar solid magnet, and production method and device thereof | |
| US11069464B2 (en) | Method and assembly for producing a magnet | |
| CN103559976A (en) | Electronic-control permanent magnetic field generator and applying method in magnetism grain finishing process | |
| CN114825807A (en) | Assembling process of Halbach magnetic assembly | |
| CN1281374C (en) | Magnetic pallet for anchorage of ferromagnetic parts for machining by machine tools with horizontal tool axis | |
| CN201157922Y (en) | Apparatus for processing Nd-Fe-B big ring-shaped material | |
| KR20160149907A (en) | Double magnetic chuck | |
| CN205123553U (en) | Synchronous linear electric motor of no iron core permanent magnetism of arc permanent magnet | |
| CN107086758B (en) | Cylindrical linear motion voice coil motor stator magnet with parallel magnetic field | |
| Zhang et al. | Modeling and analysis of a magnetically levitated synchronous permanent magnet planar motor with concentric structure winding | |
| CN106272060A (en) | A kind of fixture ground for neodymium iron boron product and the grinding method of neodymium iron boron product | |
| CN111954363A (en) | Method for manufacturing small-aperture high-gradient magnetic field quadrupole lens | |
| EP4026631A1 (en) | Apparatus and method for manufacturing a monolithic permanent magnet with a focused and a parallel magnetic flux region | |
| CN105449978A (en) | Iron-core-free permanent magnet synchronous linear motor with arc permanent magnet | |
| KR101792815B1 (en) | Magnetic chuck for t-slot is provided | |
| CN205017133U (en) | A neodymium iron boron ends of earth magnetic ring for special -shaped motor | |
| JP7310111B2 (en) | Magnet structure and rotating electric machine | |
| JP2019193404A (en) | Magnetization apparatus, method for manufacturing magnet structure, and method for manufacturing rotary electric machine | |
| Tatevosyan et al. | The study and calculation of magnetic field of the DC electromagnet with the split poles and polar tips | |
| JP2013123318A (en) | Ring magnet, method of manufacturing ring magnet, and motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |