CN109994308A - A kind of manufacturing method of Combined permanent magnet - Google Patents
A kind of manufacturing method of Combined permanent magnet Download PDFInfo
- Publication number
- CN109994308A CN109994308A CN201910038080.2A CN201910038080A CN109994308A CN 109994308 A CN109994308 A CN 109994308A CN 201910038080 A CN201910038080 A CN 201910038080A CN 109994308 A CN109994308 A CN 109994308A
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- Prior art keywords
- permanent magnet
- permanent
- monomer
- combined
- sheath
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- 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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
Abstract
The present invention discloses a kind of manufacturing method of Combined permanent magnet.It includes multiple permanent magnetic monomers being combined into a permanent magnet, and fix and protect the permanent magnet after combination by sheath.The present invention has rational design, structure is simple, by changing permanent magnet production technology, large volume permanent magnet is combined into small size, surface insulation permanent magnetic monomers, after permanent magnet is divided into small permanent magnetic monomers, the relative resistivities increase of permanent magnet reduces the eddy current of permanent magnet, and the loss for generating permanent magnet current vortex is reduced；And the shielding metal leve by installing one layer of well conducting in permanent magnetism external surface, partition generates eddy current effect to permanent magnet due to high-frequency harmonic, further lower the loss of permanent magnet, reach low-loss purpose, and the permanent magnetic monomers manufacturing cost of small size is low, also the requirement to manufacturing equipment is reduced, processing technology is also simple.
Description
Technical field
The present invention relates to permanent magnet technical fields, more particularly, to a kind of manufacturing method of Combined permanent magnet.
Background technique
Currently, well known sintered permanent magnet has many advantages, such as that residual magnetization high energy product is big, it is widely used in various automobiles
With in magneto.The features such as automobile magneto has the big revolving speed of power high, and running environment is severe, motor generally uses interior
Strip permanent magnet scheme is set, permanent magnet is generally made into the rectangular permanent magnet of certain length, then muti-piece permanent magnet is gradually installed
Into the corresponding slot of rotor.
But traditional manufacturing method has the disadvantage that the eddy-current loss of 1, permanent magnet is big；Sintered permanent magnet is due to electricity
Conductance is high, and the eddy-current loss of permanent magnet and the size of permanent magnet are directly proportional, and eddy-current loss is big when permanent magnet is individually larger.2, permanent magnetism
The protective treatment of body surface face is difficult and pollution is big；The surface of permanent magnet generally uses at the surfacecti proteons such as zinc-plated, nickel plating, spraying epoxy
Reason mode.Several processing modes need special equipment just to can be carried out processing, and all have heavy metal containing sewage or the volatilization of stupid class
It will cause pollution.3, permanent magnet material utilization rate is low；Existing permanent magnet can only be fabricated to the rectangular permanent magnet of certain length, add
A large amount of leftover pieces can be generated in work, can only be used as waste disposal, and waste is big, causes stock utilization low.4, permanent magnet is installed
It is costly；Permanent magnet needs to be fabricated to small size, causes every motor to need using many monomer permanent magnets, in installation permanent magnet
When improve installation difficulty, need a large amount of set-up time that mounting cost is caused to improve.5, permanent magnet is at high cost；Due to permanent magnet
It needs to carry out surfacecti proteon processing, and stock utilization is low, transport protection packaging material causes permanent magnet at high cost more.
Summary of the invention
The object of the present invention is to provide a kind of manufacturing methods of Combined permanent magnet for reducing eddy-current loss.
The object of the present invention is achieved like this.
A kind of manufacturing method of Combined permanent magnet, it is characterised in that: include the following steps,
Step 1: rare earth material crushing is sintered rectangular monomer permanent magnet after being pressed and molded；
Step 2: polishing to monomer permanent magnet surfaces, and the first monomer permanent magnet, second comonomer permanent magnet and third is made
Monomer permanent magnet, fluted, second comonomer permanent magnet one end of being polished in the middle part of the first monomer permanent magnet in the width direction
Polishing has step in the width direction, and Third monomer permanent magnet surfaces polish flat；
Step 3: the width according to required permanent magnet determines the combination of three kinds of permanent magnetic monomers in step 2, and is combined into
Permanent magnet at least one straight-line groove；
Step 4: by non-magnetic high conductivity metal material by being molded into sheath；
Step 5: the surface of permanent magnetic monomers needed for step 3 is applied to the adhesive of insulation, is bonded between several permanent magnetic monomers
At permanent magnet, permanent magnet is placed into sheath；
Step 6: the permanent magnet in step 5 is subjected to edge sealing using tooling；
Step 7: the permanent magnet in step 6 is subjected to baking-curing using heating equipment；
Step 8: it is magnetized using magnetizing equipment to the permanent magnet in step 7.
More specific scheme, the depth of the first monomer permanent magnet further groove is 0.5mm, width 2mm；Described second
In monomer permanent magnet the depth of step be 0.5mm, width 1mm；The depth of straight-line groove is 0.5mm, width in the permanent magnet
Degree is 2mm.
More specific scheme, the sheath with a thickness of the copper sheet of 0.2mm-0.35mm by being made, the protection of copper sheet surface electrophoresis
Processing, sheath are in shoe.
More specific scheme, the tooling include left push top, right push top and pressure head, and left push top is had a haircut with right by shoe sheath
Both ends push at straight-line groove, two end in contact of shoe sheath form protrusion, and pressure head will be in protrusion indentation straight-line groove.
More specific scheme, the adhesive of the insulation are to apply epoxyn.
Beneficial effects of the present invention are as follows:
(1) the present invention has rational design, structure is simple, by changing permanent magnet production technology, forever with small size, surface insulation
Magnetic monomer is combined into large volume permanent magnet, and after permanent magnet is divided into small permanent magnetic monomers, the relative resistivities of permanent magnet, which increases, to be reduced
The eddy current of permanent magnet, the loss for generating permanent magnet current vortex are reduced；And by installing one layer in permanent magnetism external surface
The shielding metal leve of well conducting, partition further lower permanent magnet since high-frequency harmonic generates eddy current effect to permanent magnet
Loss, reaches low-loss purpose, and the permanent magnetic monomers manufacturing cost of small size is low, also reduces the requirement to manufacturing equipment,
Processing technology is also simple.
(2) monomer permanent magnet is rectangle, and due to small in size, when sintering is unlikely to deform, and only need to simply polish nothing after molding
Linear cutter need to be being carried out, reduce leftover pieces consumption and machining period in permanent magnet manufacturing process.
(3) permanent magnetic monomers sheath made of shielding metal leve, which can combine, is made super large shape permanent magnet, makes in motor
It is easily installed when manufacture and automatic operation, reduces the set-up time.
(4) permanent magnet after combining is protected by sheath, since sheath is using copper sheet, copper sheet by electrophoretic surface protection at
Reason produces more environmentally friendly.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the first monomer permanent magnet in embodiment.
Fig. 2 is the structural schematic diagram of second comonomer permanent magnet in embodiment.
Fig. 3 is the structural schematic diagram of Third monomer permanent magnet in embodiment.
Fig. 4 is the structural schematic diagram of sheath in embodiment.
Fig. 5 is the combining structure schematic diagram of the first permanent magnet in embodiment.
Fig. 6 is the combining structure schematic diagram of second of permanent magnet in embodiment.
Fig. 7 is the combining structure schematic diagram of the third permanent magnet in embodiment.
Fig. 8 is the combining structure schematic diagram of the 4th kind of permanent magnet in embodiment.
Fig. 9 is left push top and the right schematic diagram having a haircut to sheath edge sealing in embodiment.
Figure 10 is pressure head in embodiment to the schematic diagram of sheath edge sealing.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and embodiments:
Embodiment one, referring to Fig. 1 to Figure 10, a kind of manufacturing method of Combined permanent magnet includes the following steps,
Step 1: rare earth material crushing is sintered rectangular monomer permanent magnet after being pressed and molded；
Step 2: polishing to monomer permanent magnet surfaces, and the first monomer permanent magnet 1, second comonomer permanent magnet 2 and is made
Three monomer permanent magnets 3,1 middle part of the first monomer permanent magnet polish fluted 11 in the width direction, it is preferred that the depth of groove 11
Degree is 0.5mm, width 2mm, and described 2 one end of second comonomer permanent magnet polishes have step 21 in the width direction, it is preferred that step
21 depth is 0.5mm, width 1mm, and 3 surface of Third monomer permanent magnet polishes flat；
Step 3: the width according to required permanent magnet determines the combination of three kinds of permanent magnetic monomers in step 2, and is combined into
Permanent magnet at least one straight-line groove；
Step 4: by non-magnetic high conductivity metal material by being molded into the sheath 4 of shoe, preferred use with a thickness of
The copper sheet of 0.2mm-0.35mm, and the electrophoresis protective treatment of copper sheet surface；
Step 5: the surface of permanent magnetic monomers needed for step 3 is applied into epoxyn, is glued between several permanent magnetic monomers
Permanent magnet is synthesized, permanent magnet places into sheath 4；
Step 6: carrying out edge sealing for the permanent magnet in step 5 using tooling, and tooling includes left have a haircut 5, right push top 6 and pressure head 7,
Left push top 5 and right push top 6 push at the both ends of shoe sheath 4 at straight-line groove to, and two end in contact of shoe sheath 4 form protrusion,
Pressure head 7 will be in protrusion indentation straight-line groove；
Step 7: the permanent magnet in step 6 is subjected to baking-curing using heating equipment；
Step 8: it is magnetized using magnetizing equipment to the permanent magnet in step 7.
In the present embodiment, permanent magnet can be combined by three kinds of permanent magnetic monomers, and there are many combinations:
As shown in figure 5, several first monomer permanent magnets 1 are arranged side by side in the width direction, and bonded by epoxyn
Together, the groove on the first monomer permanent magnet 1 is arranged in a line groove, then is fixed into permanent magnet by sheath 4.
As shown in fig. 6, several first monomer permanent magnets 1 are arranged side by side in the width direction, it is recessed on the first monomer permanent magnet 1
Slot is arranged in a line groove, several Third monomer permanent magnets 3 be divided into it is two rows of, be arranged side by side in the width direction, two ranked third list
Body permanent magnet 3 is separately positioned on the both ends of 1 length direction of the first monomer permanent magnet, and the first monomer permanent magnet 1 and the first monomer are forever
Magnet 1, the first monomer permanent magnet 1 and Third monomer permanent magnet 3, between Third monomer permanent magnet 3 and Third monomer permanent magnet 3
It is bonded together by epoxyn, then permanent magnet is fixed by sheath 4.
As shown in fig. 7, several second comonomer permanent magnets 2 are divided into two rows, it is arranged side by side in the width direction, and two ranked second list
The step of body permanent magnet 2 is oppositely arranged, and is bonded together between second comonomer permanent magnet 2 by epoxyn, two rows of
The step of second comonomer permanent magnet 2 splices groove in alignment, then is fixed into permanent magnet by sheath 4.
As shown in figure 8, several second comonomer permanent magnets 2 are divided into two rows, it is arranged side by side in the width direction, and two ranked second list
The step of body permanent magnet 2 is oppositely arranged, and is bonded together between second comonomer permanent magnet 2 by epoxyn, two rows of
The step of second comonomer permanent magnet 2 splices groove in alignment, and several Third monomer permanent magnets 3 are divided into two rows, along width side
To being arranged side by side, two rows of Third monomer permanent magnets 3 are separately positioned on the both ends of 2 length direction of second comonomer permanent magnet, third list
Body permanent magnet 3 and second comonomer permanent magnet 2 are bonded together by epoxyn, then are fixed into permanent magnetism by sheath 4
Body.
Certainly, the combination of permanent magnet is not limited to above-mentioned several combinations in the present embodiment, such as passes through three kinds of monomer permanent magnetism
Body is combined into the permanent magnet with a plurality of straight-line groove together, and the permanent magnet being combined into has the advantages that low-loss.
Claims (5)
1. a kind of manufacturing method of Combined permanent magnet, it is characterised in that: include the following steps,
Step 1: rare earth material crushing is sintered rectangular monomer permanent magnet after being pressed and molded；
Step 2: polishing to monomer permanent magnet surfaces, and the first monomer permanent magnet, second comonomer permanent magnet and third is made
Monomer permanent magnet, fluted, second comonomer permanent magnet one end of being polished in the middle part of the first monomer permanent magnet in the width direction
Polishing has step in the width direction, and Third monomer permanent magnet surfaces polish flat；
Step 3: the width according to required permanent magnet determines the combination of three kinds of permanent magnetic monomers in step 2, and is combined into
Permanent magnet at least one straight-line groove；
Step 4: by non-magnetic high conductivity metal by being molded into sheath；
Step 5: the surface of permanent magnetic monomers needed for step 3 is applied to the adhesive of insulation, is bonded between several permanent magnetic monomers
At permanent magnet, permanent magnet is placed into sheath, and the two poles of the earth of permanent magnet are exposed；
Step 6: the permanent magnet in step 5 is subjected to edge sealing using tooling；
Step 7: the permanent magnet in step 6 is subjected to baking-curing using heating equipment；
Step 8: it is magnetized using magnetizing equipment to the permanent magnet in step 7.
2. the manufacturing method of Combined permanent magnet according to claim 1, it is characterised in that: the first monomer permanent magnet
The depth of further groove is 0.5mm, width 2mm；The depth of step is 0.5mm in the second comonomer permanent magnet, width is
1mm；In the permanent magnet depth of straight-line groove be 0.5mm, width 2mm.
3. the manufacturing method of Combined permanent magnet according to claim 1, it is characterised in that: the sheath by with a thickness of
The copper sheet of 0.2mm-0.35mm is made, the electrophoresis protective treatment of copper sheet surface, and sheath is in shoe.
4. the manufacturing method of Combined permanent magnet according to claim 3, it is characterised in that: the tooling is pushed away including a left side
Head, right push top and pressure head, left push top and right push top push at the both ends of shoe sheath at straight-line groove to, two terminations of shoe sheath
Touching forms protrusion, and pressure head will be in protrusion indentation straight-line groove.
5. the manufacturing method of Combined permanent magnet according to claim 1, it is characterised in that: the adhesive of the insulation is
Apply epoxyn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910038080.2A CN109994308B (en) | 2019-01-16 | 2019-01-16 | Manufacturing method of combined permanent magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910038080.2A CN109994308B (en) | 2019-01-16 | 2019-01-16 | Manufacturing method of combined permanent magnet |
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| Publication Number | Publication Date |
|---|---|
| CN109994308A true CN109994308A (en) | 2019-07-09 |
| CN109994308B CN109994308B (en) | 2021-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910038080.2A Active CN109994308B (en) | 2019-01-16 | 2019-01-16 | Manufacturing method of combined permanent magnet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113096909A (en) * | 2021-03-30 | 2021-07-09 | 北京工商大学 | Resource-saving high-performance combined rare earth permanent magnet and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010040493A1 (en) * | 1999-12-30 | 2001-11-15 | Bloom Stuart J. | Flexible sheet magnet and method |
| CN1862718A (en) * | 2005-05-09 | 2006-11-15 | 中国科学院电工研究所 | Bipolar permanent magnet |
| CN203070861U (en) * | 2013-03-13 | 2013-07-17 | 宁波宁港永磁材料有限公司 | Rare earth permanent magnet |
| CN204029515U (en) * | 2014-09-15 | 2014-12-17 | 宁波宁港永磁材料有限公司 | Grooved combination permanent magnet |
| US20150284883A1 (en) * | 2013-10-09 | 2015-10-08 | Phillip Grotepas | Woven magnetic boards |
| CN106876085A (en) * | 2015-09-28 | 2017-06-20 | 福特全球技术公司 | Segment permanent magnet body |
-
2019
- 2019-01-16 CN CN201910038080.2A patent/CN109994308B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010040493A1 (en) * | 1999-12-30 | 2001-11-15 | Bloom Stuart J. | Flexible sheet magnet and method |
| CN1862718A (en) * | 2005-05-09 | 2006-11-15 | 中国科学院电工研究所 | Bipolar permanent magnet |
| CN203070861U (en) * | 2013-03-13 | 2013-07-17 | 宁波宁港永磁材料有限公司 | Rare earth permanent magnet |
| US20150284883A1 (en) * | 2013-10-09 | 2015-10-08 | Phillip Grotepas | Woven magnetic boards |
| CN204029515U (en) * | 2014-09-15 | 2014-12-17 | 宁波宁港永磁材料有限公司 | Grooved combination permanent magnet |
| CN106876085A (en) * | 2015-09-28 | 2017-06-20 | 福特全球技术公司 | Segment permanent magnet body |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113096909A (en) * | 2021-03-30 | 2021-07-09 | 北京工商大学 | Resource-saving high-performance combined rare earth permanent magnet and preparation method thereof |
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| CN109994308B (en) | 2021-01-29 |
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