CN110417207A - The assembly method of rotor magnetic steel - Google Patents
The assembly method of rotor magnetic steel Download PDFInfo
- Publication number
- CN110417207A CN110417207A CN201910525610.6A CN201910525610A CN110417207A CN 110417207 A CN110417207 A CN 110417207A CN 201910525610 A CN201910525610 A CN 201910525610A CN 110417207 A CN110417207 A CN 110417207A
- Authority
- CN
- China
- Prior art keywords
- rotor
- protection ring
- internal diameter
- temperature
- magnet steel
- 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
- 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 present invention provides a kind of assembly methods of rotor magnetic steel, include the following steps: A, are put into the rotor for being bonded with magnet steel in 0 ± 5 DEG C of insulating box, and protection ring, which is heated to 100 ± 5 DEG C, increases its internal diameter；B, protection ring is set on the magnet steel 1 of rotor；C, protection ring cooling meat, internal diameter, which becomes smaller to constitute with rotor, to be interference fitted；Protection ring in the step B is made of permeability magnetic material, and when protection ring temperature is 100 ± 5 DEG C, its internal diameter is greater than rotor outer diameter, and when protection ring temperature is room temperature, its internal diameter is less than rotor outer diameter.Protection ring is set on rotor and formed interference fit by thermal expansion and contraction principle; permeability magnetic material be made protection ring will not influence the original magnetic field of magnet steel, because of high temperature demagnetization when the protection ring that rotor low-temperature treatment avoids magnet steel and higher temperature is contacted.
Description
Technical field
The present invention relates to the assembly fields of motor, particularly as the assembly method for being a kind of rotor magnetic steel.
Background technique
Motor needs to install permanent magnet to form magnetic field, and permanent magnet is mounted on rotor or stator, is mounted on rotor
On permanent magnet be typically located on the outer surface of rotor core.
In the prior art, when the mounting magnetic steel of motor rotor core outer surface, it is contemplated that when the complexity and cost of structure, greatly
Partial picture, which is adopted, to fasten with glue, and when rotor runs at high speed, the magnet steel for being mounted on rotor core exterior surface is centrifuged
The effect of power may generate situations such as magnet steel is loosened, fallen off, lead to the damage of motor.
Summary of the invention
The present invention provides a kind of assembly method of rotor magnetic steel, rotor magnetic steel is effectively avoided to loosen under the action of the centrifugal force,
It falls off.
To achieve the above object, the invention adopts the following technical scheme: a kind of assembly method of rotor magnetic steel, including such as
The rotor for being bonded with magnet steel: A, being put into 0 ± 5 DEG C of insulating box by lower step, and protection ring, which is heated to 100 ± 5 DEG C, to be made
Its internal diameter increases；B, protection ring is set on the magnet steel 1 of rotor；C, protection ring cooling meat, internal diameter becomes smaller and motor
Rotor constitutes interference fit；Protection ring in the step B is made of permeability magnetic material, when protection ring temperature is 100 ± 5 DEG C
Its internal diameter is greater than rotor outer diameter, and when protection ring temperature is room temperature, its internal diameter is less than rotor outer diameter.
In above scheme, protection ring is set on rotor by thermal expansion and contraction principle and formed interference is matched
Close, permeability magnetic material be made protection ring will not influence the original magnetic field of magnet steel, rotor low-temperature treatment is avoided into magnet steel
Because of high temperature demagnetization when being contacted with the protection ring of higher temperature.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Specific embodiment
Below with reference to Fig. 1, invention is further described in detail.
1, a kind of assembly method of rotor magnetic steel, includes the following steps:
A, the rotor for being bonded with magnet steel 10 is put into 0 ± 5 DEG C of insulating box, protection ring 20 is heated to 100 ± 5
Increase its internal diameter；
B, protection ring 20 is set on the magnet steel 10 of rotor；
C, protection ring cooling meat, internal diameter, which becomes smaller to constitute with rotor, to be interference fitted；
Protection ring 20 in the step B is made of permeability magnetic material, when 20 temperature of protection ring is 100 ± 5 DEG C in it
Diameter is greater than rotor outer diameter, and when 20 temperature of protection ring is room temperature, its internal diameter is less than rotor outer diameter.
In above scheme, due to the easy demagnetization at high temperature of magnet steel 10, therefore rotor is subjected to low-temperature treatment, and relative to
The small volume of protection ring 20 for magnet steel 10 on rotor, the heat being carried by protection ring 20 is less, will protect
Its internal diameter is greater than rotor outer diameter after ring 20 heats, and easily protection ring 20 can be set on the magnet steel 10 of rotor,
Protection ring 20 and rotor under room temperature constitute the iron core that magnet steel 10 can be securely seated between rotor by interference fit
On, even if centrifugal force when electronics rotor rotates is larger, magnet steel 10 will not fall off, loosen, while permeability magnetic material is made to protect
Retaining ring will not influence the original magnetic field of magnet steel.
The protection ring 20 is arranged with 2~4 on rotor.Multiple protection rings can be preferably fixed by magnet steel 10
On the iron core of rotor.
The protection ring 20 is thin ring made of 304 stainless steels.304 stainless steels are a kind of common firm magnetic conduction material
Material, its coefficient of expansion is larger within the scope of 0-100 DEG C, and internal diameter is larger after heating, is conducive to install, and relatively thin material ensure that guarantor
The lighter in weight small volume of retaining ring 20 does not influence the weight and volume of rotor excessively.
When motor assembly is completed, there is certain spacing between the protection ring 20 and stator.Avoid protection ring 20 and electricity
Machine stator scratches the damage for causing motor.
Claims (4)
1. a kind of assembly method of rotor magnetic steel, characterized by the following steps:
A, the rotor for being bonded with magnet steel (10) is put into 0 ± 5 DEG C of insulating box, protection ring (20) is heated to 100 ± 5
Increase its internal diameter；
B, protection ring (20) is set on the magnet steel (10) of rotor；
C, protection ring cooling meat, internal diameter, which becomes smaller to constitute with rotor, to be interference fitted；
Protection ring (20) in the step B is made of permeability magnetic material, when protection ring (20) temperature is 100 ± 5 DEG C in it
Diameter is greater than rotor outer diameter, and when protection ring (20) temperature is room temperature, its internal diameter is less than rotor outer diameter.
2. the assembly method of rotor magnetic steel according to claim 1, it is characterised in that: the protection ring (20) turns in motor
2~4 are arranged on son.
3. the assembly method of rotor magnetic steel according to claim 1, it is characterised in that: the protection ring (20) is not 304 not
Become rusty thin ring made of steel.
4. the assembly method of rotor magnetic steel according to claim 1, it is characterised in that: when motor assembly is completed, the guarantor
There is certain spacing between retaining ring (20) and stator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910525610.6A CN110417207A (en) | 2019-06-18 | 2019-06-18 | The assembly method of rotor magnetic steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910525610.6A CN110417207A (en) | 2019-06-18 | 2019-06-18 | The assembly method of rotor magnetic steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110417207A true CN110417207A (en) | 2019-11-05 |
Family
ID=68359243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910525610.6A Pending CN110417207A (en) | 2019-06-18 | 2019-06-18 | The assembly method of rotor magnetic steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110417207A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09275651A (en) * | 1996-04-04 | 1997-10-21 | Toshiba Corp | Permanent magnet rotary machine |
| CN201160241Y (en) * | 2008-01-08 | 2008-12-03 | 李金东 | Permanent-magnet DC electric motor rotor |
| CN101420140A (en) * | 2007-10-23 | 2009-04-29 | 三菱电机株式会社 | Rotor of rotary motor and production method thereof |
| GB2494788A (en) * | 2010-08-24 | 2013-03-20 | Dyson Technology Ltd | Sleeved Rotor Core Assembly |
| CN104362815A (en) * | 2014-12-08 | 2015-02-18 | 上海电气集团上海电机厂有限公司 | Method for shrinkage fit of protective ring of 50kW ultrahigh-speed permanent magnetic generator rotor |
| CN104578501A (en) * | 2013-10-16 | 2015-04-29 | 现代摩比斯株式会社 | Rotator for preventing breakaway thereof, Eletric motor having the same, and Method for manufacturing the same |
| CN106816975A (en) * | 2017-03-09 | 2017-06-09 | 江苏久知电机技术有限公司 | A kind of oblique pole structure of permasyn morot magnet steel surface-mounted rotor and manufacturing process |
| CN109347228A (en) * | 2018-10-31 | 2019-02-15 | 贵州航天林泉电机有限公司 | The resistance to 350 DEG C of superhigh temperature of one kind, high-speed permanent magnetic rotor and its manufacturing method |
-
2019
- 2019-06-18 CN CN201910525610.6A patent/CN110417207A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09275651A (en) * | 1996-04-04 | 1997-10-21 | Toshiba Corp | Permanent magnet rotary machine |
| CN101420140A (en) * | 2007-10-23 | 2009-04-29 | 三菱电机株式会社 | Rotor of rotary motor and production method thereof |
| CN201160241Y (en) * | 2008-01-08 | 2008-12-03 | 李金东 | Permanent-magnet DC electric motor rotor |
| GB2494788A (en) * | 2010-08-24 | 2013-03-20 | Dyson Technology Ltd | Sleeved Rotor Core Assembly |
| CN104578501A (en) * | 2013-10-16 | 2015-04-29 | 现代摩比斯株式会社 | Rotator for preventing breakaway thereof, Eletric motor having the same, and Method for manufacturing the same |
| CN104362815A (en) * | 2014-12-08 | 2015-02-18 | 上海电气集团上海电机厂有限公司 | Method for shrinkage fit of protective ring of 50kW ultrahigh-speed permanent magnetic generator rotor |
| CN106816975A (en) * | 2017-03-09 | 2017-06-09 | 江苏久知电机技术有限公司 | A kind of oblique pole structure of permasyn morot magnet steel surface-mounted rotor and manufacturing process |
| CN109347228A (en) * | 2018-10-31 | 2019-02-15 | 贵州航天林泉电机有限公司 | The resistance to 350 DEG C of superhigh temperature of one kind, high-speed permanent magnetic rotor and its manufacturing method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191105 |