CN113707404A - Ferrite magnetic shoe with right-angle side on outer arc and preparation method thereof - Google Patents
Ferrite magnetic shoe with right-angle side on outer arc and preparation method thereof Download PDFInfo
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- CN113707404A CN113707404A CN202111042865.0A CN202111042865A CN113707404A CN 113707404 A CN113707404 A CN 113707404A CN 202111042865 A CN202111042865 A CN 202111042865A CN 113707404 A CN113707404 A CN 113707404A
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- magnetic shoe
- outer arc
- magnetic
- shoe body
- ferrite
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- 229910000859 α-Fe Inorganic materials 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 238000000227 grinding Methods 0.000 claims description 9
- 230000005415 magnetization Effects 0.000 claims description 8
- 238000005245 sintering Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 claims description 5
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 5
- 230000005855 radiation Effects 0.000 claims description 4
- 238000000498 ball milling Methods 0.000 claims description 3
- 238000009826 distribution Methods 0.000 abstract description 7
- 230000006698 induction Effects 0.000 abstract description 5
- 238000003825 pressing Methods 0.000 description 5
- 230000005389 magnetism Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000004075 alteration Effects 0.000 description 1
- -1 aluminum nickel cobalt Chemical compound 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/02—Permanent magnets [PM]
- H01F7/0205—Magnetic circuits with PM in general
- H01F7/021—Construction of PM
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/10—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure
-
- 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
-
- 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
- H01F41/0266—Moulding; Pressing
-
- 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
- H01F41/0286—Trimming
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/02—Permanent magnets [PM]
- H01F7/0205—Magnetic circuits with PM in general
- H01F7/0221—Mounting means for PM, supporting, coating, encapsulating PM
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Dc Machiner (AREA)
Abstract
The invention discloses a ferrite magnetic shoe with right-angle sides on outer arcs, which comprises a magnetic shoe body, wherein the magnetic shoe body is symmetrically distributed, an outer arc surface is arranged in the middle of the outer side surface of the magnetic shoe body, straight edges are arranged on two sides of the outer arc surface of the magnetic shoe body, an inner arc surface is arranged on the inner side surface of the magnetic shoe body, and the circle center of the outer arc surface and the circle center of the inner arc surface are positioned on the central axis of the magnetic shoe body; the invention also discloses a preparation method of the ferrite magnetic shoe with the right-angle side on the outer arc. The middle position of the outer side surface of the magnetic shoe body is provided with the outer arc surface, two sides of the outer arc surface are provided with the straight edges, and the outer arc surface is assembled in the shell with the square structure inside, so that positioning assembly can be better performed, the assembly precision is met, and the efficiency is improved; the thickness of the magnetic shoe body is gradually reduced from the center to two sides, so that the surface magnetic induction intensity of the inner arc working surface of the ferrite magnetic shoe is improved, the surface magnetic distribution waveform is improved, and the performance of the motor is favorably improved.
Description
Technical Field
The invention belongs to the technical field of magnetic tiles, and particularly relates to a ferrite magnetic tile with an outer arc provided with a right-angle side and a preparation method thereof.
Background
The magnetic shoe is a tile-shaped permanent magnetic material device, is mainly applied to a stator or a rotor of a permanent magnet motor, and specifically comprises a permanent magnetic ferrite magnetic shoe, a neodymium iron boron magnetic shoe and an aluminum nickel cobalt magnetic shoe. The permanent magnetic ferrite magnetic shoe is generally prepared by adopting a sintering process, and can be divided into different preparation processes such as wet-pressing opposite sex, dry-pressing same sex, dry-pressing opposite sex and the like, wherein the difference between the opposite sex and the same sex is whether an oriented magnetic field exists during press forming. Generally, the magnetic performance of the magnetic shoe prepared by the wet pressing anisotropic process is relatively higher, and the production capacity is the largest at present, so the permanent magnetic ferrite magnetic shoe in the general meaning is the permanent magnetic ferrite magnetic shoe prepared by the wet pressing anisotropic sintering process, and the neodymium iron boron magnetic shoe with higher performance is more and more widely used along with higher and higher requirements on the performance of the magnetic shoe.
The dimension specification parameters of the conventional magnetic shoe mainly comprise an inner arc radius, an outer arc radius, a length, a width, a thickness and an arch height; the above-mentioned dimensional specification parameters may have different requirements according to the actual application requirements of the customer. The tile-shaped magnet is mainly applied to a permanent magnet motor stator or rotor, usually, a plurality of magnetic tiles are adhered to a casing to form an annular stator or rotor, the inner arc and the outer arc of the conventional magnetic tiles are generally radian, most of the inner arc and the outer arc are concentric, under the condition of open circuit, the surface magnetism of the inner arc working surface is uneven, the surface magnetism of the central point of the inner arc is lower, and the magnetic tiles can only be assembled in the casing which is internally circular.
Disclosure of Invention
The invention aims to provide a ferrite magnetic shoe with an outer arc provided with a right-angle side, which aims to solve the problems in the prior art. The ferrite magnetic shoe with the right-angle side on the outer arc has the advantages of magnetic shoes with different thicknesses, is more beneficial to positioning and assembling, and can be assembled in a casing with a square inner surface.
The invention also aims to provide a preparation method of the ferrite magnetic shoe with the right-angle side on the outer arc.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a ferrite magnetic shoe of outer arc area right angle side, includes the magnetic shoe body, and the shape of magnetic shoe body is the symmetric distribution, and the intermediate position of magnetic shoe body lateral surface is equipped with the extrados, and the both sides that magnetic shoe body lateral surface lies in the extrados are equipped with the straight flange, and the medial surface of magnetic shoe body is equipped with the intrados, and the centre of a circle of extrados and the centre of a circle of intrados lie in the axis of magnetic shoe body.
In order to assemble the casing with a square structure inside, positioning and assembling can be better carried out, assembling precision is met, and efficiency is improved, in the invention, furthermore, the included angle of the extension lines of the two straight edges is ninety degrees.
In order to avoid the damage of the magnetic tile body caused by the collision between the magnetic tile body and the shell during assembly, the end part of the straight edge is further provided with a round angle.
In order to improve the surface magnetic induction intensity of the inner arc working surface of the ferrite magnetic shoe, improve the surface magnetic distribution waveform and improve the performance of the motor, in the invention, the thickness of the magnetic shoe body is further gradually reduced from the center to two sides.
Further, the preparation method of the ferrite magnetic shoe with the right-angle side on the outer arc comprises the following steps:
designing parameters of an outer arc surface and a straight edge according to the specification of a given shell, and designing and processing a matched die and a magnetic field;
secondly, carrying out the processes of burdening, mixed grinding, presintering, ball milling, magnetic field forming and sintering in the early stage by adopting a conventional means;
grinding the ferrite magnetic shoe obtained by sintering to meet the requirements of the dimension specification of the outer arc surface and the straight edge;
and fourthly, parallel magnetization or radiation magnetization is adopted, the performance of the magnetic shoe is tested, and then the magnetic shoe is assembled with the shell for testing.
In the step (III), when the magnetic shoe is a neodymium iron boron magnetic shoe, grinding is not needed.
Compared with the prior art, the invention has the beneficial effects that:
1. the middle position of the outer side surface of the magnetic shoe body is provided with the outer arc surface, two sides of the outer arc surface are provided with the straight edges, and the outer arc surface is assembled in the shell with the square structure inside, so that positioning assembly can be better performed, the assembly precision is met, and the efficiency is improved;
2. the thickness of the magnetic shoe body is gradually reduced from the center to two sides, so that the surface magnetic induction intensity of the inner arc working surface of the ferrite magnetic shoe is improved, the surface magnetic distribution waveform is improved, and the performance of the motor is favorably improved;
3. the end part of the straight edge of the invention is provided with the round angle, which can avoid the damage of the magnetic tile body caused by the collision between the magnetic tile body and the shell when in assembly.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the assembled magnetic shoe body and the casing of the present invention;
in the figure: 1. a magnetic shoe body; 2. an outer arc surface; 3. straight sides; 4. an intrados surface; 5. round corners; 6. a casing.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1-2, the present invention provides the following technical solutions: the utility model provides a ferrite magnetic shoe of outer arc area right angle side, includes magnetic shoe body 1, and the shape of magnetic shoe body 1 is the symmetric distribution, and the intermediate position of 1 lateral surface of magnetic shoe body is equipped with extrados 2, and 1 lateral surface of magnetic shoe body is located the both sides of extrados 2 and is equipped with straight flange 3, and the medial surface of magnetic shoe body 1 is equipped with intrados 4, and the centre of a circle of extrados 2 and the centre of a circle of intrados 4 are located the axis of magnetic shoe body 1.
Specifically, the included angle between the extension lines of the two straight sides 3 is ninety degrees.
Through adopting above-mentioned technical scheme, assemble in the casing 6 that is square structure in, can better carry out the positioning assembly, satisfy assembly precision and raise the efficiency.
Specifically, the thickness of the magnetic shoe body 1 is gradually reduced from the center to both sides.
By adopting the technical scheme, the surface magnetic induction intensity of the inner arc working surface of the ferrite magnetic shoe is improved, the surface magnetic distribution waveform is improved, and the motor performance is favorably improved; compared with the conventional ferrite magnetic shoe, after the same material is designed by adopting the ferrite magnetic shoe with different thicknesses, the surface magnetism of the central point of the inner arc is obviously improved no matter the parallel magnetization or the radiation magnetization is adopted, and meanwhile, the surface magnetism waveform of the central line of the cross section of the inner arc is relatively smoother, thereby being more beneficial to the stable operation of a motor.
Specifically, the intrados 4 is designed to have a conventional radian; the radian of the outer cambered surface 2 is equal to that of the inner cambered surface of the shell 6.
By adopting the technical scheme, the positioning assembly is convenient to better perform, the assembly precision is met, and the efficiency is improved.
Example 2
The present embodiment is different from embodiment 1 in that: specifically, the end of the straight edge 3 is provided with a rounded corner 5.
Through adopting above-mentioned technical scheme, can avoid during the assembly, the colliding with between magnetic shoe body 1 and the casing 6 leads to magnetic shoe body 1 to damage.
Further, the preparation method of the ferrite magnetic shoe with the right-angle side on the outer arc comprises the following steps:
designing parameters of an outer arc surface 2 and a straight edge 3 according to the specification of a given shell 6, and designing and processing a matched die and a magnetic field;
secondly, carrying out the processes of burdening, mixed grinding, presintering, ball milling, magnetic field forming and sintering in the early stage by adopting a conventional means;
grinding the ferrite magnetic shoe obtained by sintering to meet the requirements of the dimension specifications of the outer arc surface 2 and the straight edge 3;
and fourthly, parallel magnetization or radiation magnetization is adopted, the performance of the magnetic shoe is tested, and then the magnetic shoe is assembled with the shell 6 for testing (including positioning fit with the shell, power, noise and the like).
Specifically, in the step (three), when the magnetic shoe is a neodymium iron boron magnetic shoe, grinding is not needed, but the size requirement is required to be ensured during mold forming.
In conclusion, the middle position of the outer side surface of the magnetic tile body 1 is provided with the outer arc surface 2, two sides of the outer arc surface 2 are provided with the straight edges 3, and the magnetic tile body is assembled in the shell 6 with the square structure, so that positioning assembly can be better performed, the assembly precision is met, and the efficiency is improved; the thickness of the magnetic shoe body 1 is gradually reduced from the center to two sides, so that the surface magnetic induction intensity of the inner arc working surface of the ferrite magnetic shoe is improved, the surface magnetic distribution waveform is improved, and the performance of a motor is favorably improved; the end part of the straight edge 3 of the invention is provided with the round angle 5, which can avoid the damage of the magnetic tile body 1 caused by the collision between the magnetic tile body 1 and the shell 6 during the assembly.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a ferrite magnetic shoe of outer arc area right angle side which characterized in that: the magnetic shoe comprises a magnetic shoe body, wherein an outer arc surface is arranged in the middle of the outer side surface of the magnetic shoe body, straight edges are arranged on two sides, located on the outer arc surface, of the outer side surface of the magnetic shoe body, and an inner arc surface is arranged on the inner side surface of the magnetic shoe body.
2. The ferrite magnetic tile with the right-angled edge on the outer arc as claimed in claim 1, wherein: the included angle of the extension lines of the two straight edges is ninety degrees.
3. The ferrite magnetic tile with the right-angled edge on the outer arc as claimed in claim 1, wherein: and the end part of the straight edge is provided with a round angle.
4. The ferrite magnetic tile with the right-angled edge on the outer arc as claimed in claim 1, wherein: the magnetic shoe bodies are symmetrically distributed in shape.
5. The ferrite magnetic tile with the right-angled edge on the outer arc as claimed in claim 1, wherein: the circle center of the outer cambered surface and the circle center of the inner cambered surface are positioned on the central axis of the magnetic shoe body.
6. The ferrite magnetic tile with the right-angled edge on the outer arc as claimed in claim 1, wherein: the thickness of the magnetic shoe body is gradually reduced from the center to two sides.
7. The preparation method of the ferrite magnetic tile with the right-angle side on the outer arc according to any one of claims 1 to 6, characterized by comprising the following steps:
designing parameters of an outer arc surface and a straight edge according to the specification of a given shell, and designing and processing a matched die and a magnetic field;
secondly, carrying out the processes of burdening, mixed grinding, presintering, ball milling, magnetic field forming and sintering in the early stage by adopting a conventional means;
grinding the ferrite magnetic shoe obtained by sintering to meet the requirements of the dimension specification of the outer arc surface and the straight edge;
and fourthly, parallel magnetization or radiation magnetization is adopted, the performance of the magnetic shoe is tested, and then the magnetic shoe is assembled with the shell for testing.
8. The method for preparing the ferrite magnetic shoe with the right-angle side on the outer arc according to claim 7, wherein in the step (three), when the magnetic shoe is a neodymium iron boron magnetic shoe, grinding is not needed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111042865.0A CN113707404A (en) | 2021-09-07 | 2021-09-07 | Ferrite magnetic shoe with right-angle side on outer arc and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111042865.0A CN113707404A (en) | 2021-09-07 | 2021-09-07 | Ferrite magnetic shoe with right-angle side on outer arc and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113707404A true CN113707404A (en) | 2021-11-26 |
Family
ID=78660759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111042865.0A Pending CN113707404A (en) | 2021-09-07 | 2021-09-07 | Ferrite magnetic shoe with right-angle side on outer arc and preparation method thereof |
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| Country | Link |
|---|---|
| CN (1) | CN113707404A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114211593A (en) * | 2021-12-29 | 2022-03-22 | 中钢天源(马鞍山)通力磁材有限公司 | Method for improving collapse force of permanent magnetic ferrite magnetic shoe |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202424335U (en) * | 2011-11-25 | 2012-09-05 | 广东肇庆爱龙威机电有限公司 | Compact type light-weight four-pole square permanent-magnet direct current (DC) motor |
| CN103840570A (en) * | 2014-02-21 | 2014-06-04 | 广东威灵电机制造有限公司 | Motor magnetic tiles and motor provided with motor magnetic tiles |
| CN106059146A (en) * | 2016-07-25 | 2016-10-26 | 珠海格力节能环保制冷技术研究中心有限公司 | Magnetic tile, motor rotor and motor |
| CN106975987A (en) * | 2017-03-21 | 2017-07-25 | 横店集团东磁股份有限公司 | A kind of not uniform thickness ferrite magnetic shoe and preparation method thereof |
-
2021
- 2021-09-07 CN CN202111042865.0A patent/CN113707404A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202424335U (en) * | 2011-11-25 | 2012-09-05 | 广东肇庆爱龙威机电有限公司 | Compact type light-weight four-pole square permanent-magnet direct current (DC) motor |
| CN103840570A (en) * | 2014-02-21 | 2014-06-04 | 广东威灵电机制造有限公司 | Motor magnetic tiles and motor provided with motor magnetic tiles |
| CN106059146A (en) * | 2016-07-25 | 2016-10-26 | 珠海格力节能环保制冷技术研究中心有限公司 | Magnetic tile, motor rotor and motor |
| CN106975987A (en) * | 2017-03-21 | 2017-07-25 | 横店集团东磁股份有限公司 | A kind of not uniform thickness ferrite magnetic shoe and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114211593A (en) * | 2021-12-29 | 2022-03-22 | 中钢天源(马鞍山)通力磁材有限公司 | Method for improving collapse force of permanent magnetic ferrite magnetic shoe |
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Application publication date: 20211126 |