CN109167448A - A kind of surface-mount type high-speed permanent magnet motor sheath and permanent magnet elastic conjunction structure - Google Patents
A kind of surface-mount type high-speed permanent magnet motor sheath and permanent magnet elastic conjunction structure Download PDFInfo
- Publication number
- CN109167448A CN109167448A CN201811156643.XA CN201811156643A CN109167448A CN 109167448 A CN109167448 A CN 109167448A CN 201811156643 A CN201811156643 A CN 201811156643A CN 109167448 A CN109167448 A CN 109167448A
- Authority
- CN
- China
- Prior art keywords
- permanent magnet
- sheath
- guide sleeve
- shaft
- mount type
- 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.)
- Pending
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Classifications
-
- 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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
Abstract
The invention discloses a kind of surface-mount type high-speed permanent magnet motor sheaths and permanent magnet elastic conjunction structure, are made of shaft, sheath, permanent magnet and guide sleeve.Shaft is a multi-diameter shaft, and permanent magnet upper surface and guide sleeve lower end surface cooperate, and guide sleeve outer surface top half is the conical surface, and one section of lower half portion can avoid interference engagement to wait cylinders concave station.After sheath is by heating, inner surface expansion expands, and is sleeved on permanent magnetism external surface from top to bottom by the conical surface of guide sleeve upper surface, when temperature is down to normal temperature state, with regard to realizing the interference fit of sheath and permanent magnet.Since rare earth permanent-magnetic material is expensive, traditional method, it is difficult to ensure that jacket inner surface and permanent magnet are radial and axial entirely on the center when clamping assembly, causes permanent magnet in the easily chipping problem of assembling process under sheath hot conditions.The structure can effectively ensure that sheath and permanent magnet elastic conjunction are smoothly implemented, and effectively improves the assembly efficiency of high speed permanent magnet motor rotor and reduces motor cost.
Description
Technical field
The present invention relates to a kind of high speed permanent magnet motor rotor structure more particularly to a kind of interference fit structures.
Background technique
For surface-mount type high speed permanent magnet motor rotor, since permanent magnet is fragile material, biggish centrifugation cannot be born and drawn
Stress, high speed rotor structure often run on tens of thousands of or even hundreds of thousands turn per minute or more, high-intensitive sheath are needed to pass through
The mode of cooperation of being full of provides enough compression to permanent magnet at high speeds, to guarantee that permanent magnet and sheath do not occur at high speeds
Separate fragmentation accident.Since permanent magnet and sheath use interference fit type, magnitude of interference usually only 0.1-0.3mm is traditional
Mode easilys lead to permanent magnet and occurs to destroy and lead to problems such as assembly difficulty in assembly.In order to realize high revolving speed, guarantee
High speed permanent magnet motor rotor smoothly efficiently carries out in fit tolerance assembling, and solution technical deficiency need to be improved to the prior art
Place.
Summary of the invention
The technical problem to be solved by the present invention is overcome the deficiencies of the prior art and provide a kind of structure is simple, technique at
Ripe high-speed permanent magnet motor sheath and permanent magnet elastic conjunction structure, can meet the requirement to rotor stability and reliability.
The present invention solve above-mentioned technical problem the technical solution adopted is that:
A kind of surface-mount type high-speed permanent magnet motor sheath and permanent magnet elastic conjunction structure, by guide sleeve, sheath, permanent magnet and
Shaft composition；The shaft is a multi-diameter shaft, and lower end ladder and permanent magnet lower end surface are cooperatively connected, and permanent magnet is adopted with shaft
With clearance fit, inner surface is cooperated by gluing knot, permanent magnet upper surface and guide sleeve lower end surface, guarantees to compress and avoid to do
Relate to cooperation, guide sleeve inner surface and the tight clearance fit of shaft.
Wherein, the guide sleeve outer surface is designed to that top half is the conical surface, and one section of lower half portion is to wait cylindrical surfaces, one
Section is concave station, and wherein the diameter of external cylindrical surface is identical as permanent magnet outer diameter, and concave station outer diameter is 1mm or more smaller than cylindrical surface, prevents from filling
Sheath upper end and guide sleeve lower end after matching interfere cooperation.
Wherein, permanent magnet is using annular or the rare-earth permanent magnet material of solid high-energy density, and high temperature resistant is up to 350 DEG C
SmCo series or NdFeB series.
Wherein, sheath is strong using high-intensitive alloy material or fibrous material, such as titanium alloy and nichrome, tension
Degree reaches 1000MPa or more.
The principle of the invention lies in: a kind of surface-mount type high-speed permanent magnet motor sheath and permanent magnet elastic conjunction structure, by turning
Axis, sheath, permanent magnet and guide sleeve composition.Shaft is a multi-diameter shaft, and lower end ladder and permanent magnet lower end surface are cooperatively connected, forever
Magnet is gap-matched with shaft, and inner surface is cooperated by gluing knot, permanent magnet upper surface and guide sleeve lower end surface, is guaranteed
Compress and avoid interference with cooperation.Guide sleeve inner surface and the tight clearance fit of shaft, outer surface are designed to that top half is the conical surface, under
One section of half part is equal cylindrical surfaces, and one section is concave station.After sheath is by heating, inner surface expansion expands, by being oriented to set upper side
Encapsulation is in permanent magnetism external surface from top to bottom for the lesser conical surface in face, when temperature is down to normal temperature state, with regard to realizing sheath and permanent magnet
Interference fit.Permanent magnet is using annular or the rare-earth permanent magnet material of solid high-energy density, and sheath is using high-intensitive
Alloy material, such as titanium alloy and nichrome.The present invention first finishes permanent magnetism external surface, then according to electricity
Magnitude of interference required for machine rotor carries out jacket inner surface finishing, to ensure accurate work difference cooperation.It first will forever when assembly
Magnet is fixed by bonding with shaft, then guide sleeve and shaft are cooperated, and is cooperated with permanent magnet upper surface.The sheath of heating is logical
After crossing the size that detection internal diameter swell increment reaches required, sheath can be assemblied in permanent magnet by being oriented to set upper side from top to bottom
On.
The present invention due to using the technology described above, has the advantage that and is mounted directly connection due to eliminating tradition
Mode, can avoid permanent magnet and sheath occurs axis deviation in assembling process and misaligns, and lead to the problem of fragmentation accident, effectively
Rotor assembling process is improved and simplifies, reasonable magnitude of interference cooperates precision, it is ensured that installation engagement process sheath internal diameter thermal expansion
The prediction of amount can effectively realize the temperature for reducing sheath heating, solve brittleness permanent magnet under high speed centrifugation stress or so
Strength problem guarantees stability and reliability when high speed permanent magnet motor rotor high-speed cruising.More advantages can be supplemented.
Detailed description of the invention
Fig. 1 is surface-mount type high-speed permanent magnet motor sheath and permanent magnet elastic conjunction structure；
Fig. 2 is that sheath and permanent magnet are interference fitted schematic illustration；
In figure: 1 is guide sleeve, and 2 be sheath, and 3 be permanent magnet, and 4 be shaft.
Specific embodiment
With reference to the accompanying drawing and specific embodiment further illustrates the present invention.
As shown in Figure 1, the present invention is a kind of surface-mount type high-speed permanent magnet motor sheath and permanent magnet elastic conjunction structure, master
It to be made of guide sleeve 1, sheath 2, permanent magnet 3 and shaft 4.Shaft 4 is a multi-diameter shaft, lower end ladder and 3 lower end of permanent magnet
Face is cooperatively connected, and permanent magnet 3 is gap-matched with shaft 4, and inner surface passes through gluing knot, 3 upper surface of permanent magnet and guide sleeve 1
Lower end surface cooperation guarantees to compress and avoid interference with cooperation, 1 inner surface of guide sleeve and the tight clearance fit of shaft 4.Permanent magnet 3 is adopted
With annular or the rare-earth permanent magnet material of solid high-energy density, sheath 2 is using high-intensitive alloy material, such as titanium alloy
With nichrome etc..3 outer diameter R of permanent magnetmIt is obtained by finishing, 2 internal diameter R of sheathsAccuracy rule based on 3 outer diameter of permanent magnet
The size of very little and required magnitude of interference is obtained by finishing.In order to realize interference fit, R should ensure thatm>Rs.Heating jacket 2
It is allowed to expanded by heating, and heat preservation makes to reach thermal balance, is more than during which 3 outer diameter one of permanent magnet by detection 2 internal diameter swell increment of sheath
Determine size, it can be installed on 3 outer surface of permanent magnet by guide sleeve 1 from top to bottom, when temperature is restored to room temperature, 2 He of sheath
Permanent magnet 3 will realize elastic conjunction.
In addition it should be pointed out that heretofore described component names and shape can be different, it is all according to present inventive concept institute
Modification, supplement and the improvement that construction, feature and the principle stated are made, are regarded as protection scope of the present invention.
Claims (5)
1. a kind of surface-mount type high-speed permanent magnet motor sheath and permanent magnet elastic conjunction structure, it is characterised in that: by guide sleeve (1),
Sheath (2), permanent magnet (3) and shaft (4) composition；The shaft (4) is a multi-diameter shaft, lower end ladder and permanent magnet (3)
Lower end surface is cooperatively connected, and permanent magnet (3) is gap-matched with shaft (4), and inner surface passes through gluing knot, permanent magnet (3) upper end
Face and guide sleeve (1) lower end surface cooperate, and guarantee to compress and avoid interference with cooperation, guide sleeve (1) inner surface and shaft (4) tightly between
Gap cooperation.
2. a kind of surface-mount type high-speed permanent magnet motor sheath according to claim 1 and permanent magnet elastic conjunction structure, special
Sign is: described guide sleeve (1) outer surface is designed to that top half is the conical surface, and one section of lower half portion is to wait cylindrical surfaces, one section
For concave station, wherein the diameter of external cylindrical surface is identical as permanent magnet (3) outer diameter, and concave station outer diameter is 1mm or more smaller than cylindrical surface, prevents from filling
Sheath upper end and guide sleeve lower end after matching interfere cooperation.
3. a kind of surface-mount type high-speed permanent magnet motor sheath according to claim 1 and permanent magnet elastic conjunction structure, special
Sign is: permanent magnet (3) is using annular or the rare-earth permanent magnet material of solid high-energy density, and high temperature resistant is up to 350 DEG C
SmCo series or NdFeB series.
4. a kind of surface-mount type high-speed permanent magnet motor sheath according to claim 1 and permanent magnet elastic conjunction structure, special
Sign is: sheath (2) reaches 1000MPa or more using high-intensitive alloy material or fibrous material, tensile strength.
5. a kind of surface-mount type high-speed permanent magnet motor sheath according to claim 1 and permanent magnet elastic conjunction structure, special
Sign is: sheath (2) uses titanium alloy or nichrome.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811156643.XA CN109167448A (en) | 2018-09-30 | 2018-09-30 | A kind of surface-mount type high-speed permanent magnet motor sheath and permanent magnet elastic conjunction structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811156643.XA CN109167448A (en) | 2018-09-30 | 2018-09-30 | A kind of surface-mount type high-speed permanent magnet motor sheath and permanent magnet elastic conjunction structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109167448A true CN109167448A (en) | 2019-01-08 |
Family
ID=64877249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811156643.XA Pending CN109167448A (en) | 2018-09-30 | 2018-09-30 | A kind of surface-mount type high-speed permanent magnet motor sheath and permanent magnet elastic conjunction structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109167448A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111725922A (en) * | 2020-06-30 | 2020-09-29 | 稳力(广东)科技有限公司 | Motor sheath device |
| CN113618373A (en) * | 2021-08-27 | 2021-11-09 | 北京北方车辆集团有限公司 | Method for assembling crank arm assembly made of titanium alloy material |
| CN114362457A (en) * | 2021-12-30 | 2022-04-15 | 航天科工智能机器人有限责任公司 | Rotor sheath assembling device and method |
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| CN2794759Y (en) * | 2005-04-30 | 2006-07-12 | 重庆力帆实业（集团）有限公司 | Piston ring mounting tool |
| CN205160231U (en) * | 2015-10-13 | 2016-04-13 | 珠海格力节能环保制冷技术研究中心有限公司 | Segmentation is utmost point formula PMSM rotor to one side |
| CN106505767A (en) * | 2016-12-07 | 2017-03-15 | 哈尔滨工业大学 | There is the surface-mount type speed permanent magnet synchronous motor rotor of stacked metal pole piece spacing |
| CN206481198U (en) * | 2017-03-09 | 2017-09-08 | 江苏久知电机技术有限公司 | A kind of permasyn morot magnet steel surface-mounted rotor |
| CN107465286A (en) * | 2017-08-16 | 2017-12-12 | 贵州航天林泉电机有限公司 | A kind of permanent magnet rotor structure |
| CN207874125U (en) * | 2018-01-31 | 2018-09-18 | 山东科瑞泵业有限公司 | A kind of oil field operation scene valve rubber skin assembly tool |
-
2018
- 2018-09-30 CN CN201811156643.XA patent/CN109167448A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2794759Y (en) * | 2005-04-30 | 2006-07-12 | 重庆力帆实业（集团）有限公司 | Piston ring mounting tool |
| CN205160231U (en) * | 2015-10-13 | 2016-04-13 | 珠海格力节能环保制冷技术研究中心有限公司 | Segmentation is utmost point formula PMSM rotor to one side |
| CN106505767A (en) * | 2016-12-07 | 2017-03-15 | 哈尔滨工业大学 | There is the surface-mount type speed permanent magnet synchronous motor rotor of stacked metal pole piece spacing |
| CN206481198U (en) * | 2017-03-09 | 2017-09-08 | 江苏久知电机技术有限公司 | A kind of permasyn morot magnet steel surface-mounted rotor |
| CN107465286A (en) * | 2017-08-16 | 2017-12-12 | 贵州航天林泉电机有限公司 | A kind of permanent magnet rotor structure |
| CN207874125U (en) * | 2018-01-31 | 2018-09-18 | 山东科瑞泵业有限公司 | A kind of oil field operation scene valve rubber skin assembly tool |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111725922A (en) * | 2020-06-30 | 2020-09-29 | 稳力(广东)科技有限公司 | Motor sheath device |
| CN113618373A (en) * | 2021-08-27 | 2021-11-09 | 北京北方车辆集团有限公司 | Method for assembling crank arm assembly made of titanium alloy material |
| CN113618373B (en) * | 2021-08-27 | 2023-08-15 | 北京北方车辆集团有限公司 | Assembly method of crank arm assembly made of titanium alloy material |
| CN114362457A (en) * | 2021-12-30 | 2022-04-15 | 航天科工智能机器人有限责任公司 | Rotor sheath assembling device and method |
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