CN107301914A - A kind of magnetization method of permanent magnet - Google Patents
A kind of magnetization method of permanent magnet Download PDFInfo
- Publication number
- CN107301914A CN107301914A CN201710722639.4A CN201710722639A CN107301914A CN 107301914 A CN107301914 A CN 107301914A CN 201710722639 A CN201710722639 A CN 201710722639A CN 107301914 A CN107301914 A CN 107301914A
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- Prior art keywords
- permanent magnet
- head
- magnetizing
- magnetized
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- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The magnetization method of a kind of permanent magnet of the present invention, it is characterised in that it comprises the following steps：((1) determines the position of permanent magnet weak magnetic area axis；(2) permanent magnet is placed on multi-pole magnetizing head, make the weak magnetic area axis of permanent magnet to the left positioned at magnetizing coil axis, distance to the left is that the magnetizing coil in the 1/2 of the diameter of wire of composition magnetizing coil, multi-pole magnetizing head is powered, and magnetize for the first time；(3) permanent magnet is moved right, permanent magnet weak magnetic area axis is set to be located at magnetizing coil axis to the right, distance to the right is the 1/2 of the diameter of wire of composition magnetizing coil, magnetizing coil in multi-pole magnetizing head is once again powered up, magnetized for the second time, described first time magnetizes identical with the sense of current that magnetizes magnetized for the second time, and size of current is identical.Relative to traditional magnetization method, after being magnetized using the method for the present invention to permanent magnet, the weak magnetic area of permanent magnet is obviously reduced.
Description
Technical field
The present invention relates to a kind of magnetization method of permanent magnet, more particularly to a kind of multi-pole magnetizing head or so skew side of magnetizing
Method.
Background technology
At present, the multipole magnetization for permanent magnet is typically all magnetized using multi-pole magnetizing head prints two kinds with magnetic.Magnetic is printed
Weak magnetic area it is irregular, the two poles of the earth line of demarcation is obscured, and is printed accordingly, with respect to magnetic, the approach application that multi-pole magnetizing head magnetizes is more
Extensively.
The Chinese patent that the magnetization method such as application publication number of the multi-pole magnetizing head of current permanent magnet is CN102760550A,
It discloses a kind of magnetization method and device, magnetization method includes：Solenoid to the default number of turn applies the default voltage that magnetizes, should
It is default magnetize voltage more than or equal to the solenoidal D.C. resistance and solenoidal peak value magnetize electric current product 1.5
Times；Using the solenoid, according to the default voltage that magnetizes, permanent magnet may be reversed to the magnetic field in the solenoid and fill
Magnetic.
There is following defect in the magnetization method of above-mentioned permanent magnet：After being magnetized by multi-pole magnetizing head, magnetizing for permanent magnet is full
Poor with spending, weak magnetic region is big, and overall magnetic is weak.
The content of the invention
It is an object of the invention to the defect that weak magnetic area is big, magnetic is weak existed for above-mentioned permanent magnet magnetization method, relate to
And one kind can reduce weak magnetic sector width, the magnetization method for the saturation degree that magnetizes is improved.
For the attainment of one's purpose, the technical scheme that provides of the present invention is：
The magnetization method of a kind of permanent magnet of the present invention, it is characterised in that it comprises the following steps：
(1) position of permanent magnet weak magnetic area axis is determined；
(2) permanent magnet is placed on multi-pole magnetizing head, the weak magnetic area axis of permanent magnet is located at magnetizing coil axis
To the left, distance to the left is that the magnetizing coil in the 1/2 of the diameter of wire of composition magnetizing coil, multi-pole magnetizing head is powered, and is carried out
Magnetize for the first time；
(3) permanent magnet is moved right, makes permanent magnet weak magnetic area axis to the right positioned at magnetizing coil axis, it is to the right
Distance is that the magnetizing coil in the 1/2 of the diameter of wire of composition magnetizing coil, multi-pole magnetizing head is once again powered up, and is filled for the second time
Magnetic, described first time magnetizes identical with the sense of current that magnetizes magnetized for the second time, and size of current is identical.
Preferably, described multi-pole magnetizing head includes upper magnetized head and lower magnetized head, and upper magnetized head is located at lower magnetized head
It is equipped with surface, upper magnetized head and lower magnetized head on built-in pole piece, built-in pole piece and is equipped with magnetizing coil, described magnetizes
Coil is coiled into by wire, and the coil position of magnetized head is mutually corresponded to up and down.
Preferably, the axis of described permanent magnet weak magnetic area is the center line of permanent magnet.
Preferably, when the first time magnetizes and magnetized for the second time, the position of permanent magnet is adjusted by servomotor.Adopt
With servomotor movable permanent magnet body, it is favorably improved permanent magnet and magnetizes the accuracy of position.
The technical scheme provided using the present invention, compared with prior art, is had the advantages that：
The magnetization method for the permanent magnet that the present invention is used is magnetized twice to permanent magnet, magnetizes filled respectively in multipole twice
Magnetizing coil center of magnetic head or so is offset and completed under the position of 1/2 line footpath, and weak magnetic area survey is carried out to permanent magnet after the completion of magnetizing
Amount, it is found that the weak magnetic sector width of the permanent magnet magnetized using this method is compared the weak magnetic sector width normally magnetized and can reduced
1/3~1/2 or so, the especially magnet steel small to magnet pole widths can significantly improve the saturation degree that magnetizes.
Brief description of the drawings
Fig. 1 is the structural representation of multi-pole magnetizing head of the present invention；
Fig. 2 treats the position relationship profile of charging permanent magnet and multi-pole magnetizing head when being magnetized for the first time for the present invention；
Fig. 3 treats the position relationship profile of charging permanent magnet and multi-pole magnetizing head when being magnetized for the second time for the present invention；
Fig. 4 is the structural representation for the mobile device for treating magnetizing permanent magnetism body position；
Fig. 5 is the permanent magnet and its weak magnetic area displaying after once magnetizing；
Fig. 6 is the permanent magnet after secondary magnetize and its weak magnetic area displaying.
Illustrate：Lower magnetized head 1, built-in pole piece 2, magnetizing coil 3, permanent magnet 4, upper magnetized head 5, input panel 6,
Adjust Y-axis moving track 7, Y-axis movable block 8, servomotor 9, X-axis moving track 10, X-axis movable block 11, servomotor 12, position
Whole bar 13, magnetizing coil axis 14, weak magnetic area axis 15.
Embodiment
To further appreciate that present disclosure, the present invention is described in detail in conjunction with the embodiments, and following examples are used for
Illustrate the present invention, but be not limited to the scope of the present invention.
The structure of multi-pole magnetizing head of the present invention is as shown in attached body 1, and it includes magnetized head 5 and lower magnetized head 1, on
Magnetized head 5, which is located in the surface of lower magnetized head 1, upper charging head 5 and lower magnetized head 1, is equipped with built-in pole piece 2, built-in pole piece 2
Magnetizing coil 3 is provided with, the position of charge coil 3 of upper and lower charging magnetic head is mutually corresponded to, and the charge coil 3 in the present embodiment is
It is coiled into by a diameter of 1.8mm wire.
With reference to shown in accompanying drawing 2, it is first determined the axis 15 of the weak magnetic area after charging permanent magnet 4 magnetizes is in permanent magnet
Center.Permanent magnet 4 is placed on magnetizing coil when magnetizing for the first time, the axis 15 of the weak magnetic area of hypothesis is located at magnetizing coil
The 0.9mm to the left of axis 14 position, connects the power supply of magnetizing coil 3, and permanent magnet 4 is carried out to magnetize for the first time.With reference to accompanying drawing 3
It is shown, after the completion of magnetizing for the first time, permanent magnet 4 is moved right 1.8mm (mobile distance and the diameter phase of magnetizing coil wire
Together), the axis 15 of the weak magnetic area of hypothesis is located at the 0.9mm to the right of magnetizing coil axis 14 position, connect magnetizing coil 3
Power supply, permanent magnet 4 is magnetized for the second time, it should be noted that the sense of current and electric current being powered when magnetizing for the second time
Size magnetizes identical with first time.
To improve in the accuracy of the position of permanent magnet 4, the present embodiment, the position of charging permanent magnet 4 is electric using servo twice
Machine is adjusted, and permanent magnet 4 as shown in Figure 4, is placed on the left side of lower magnetized head 1, Ran Hougen by the structure of its device when using
The coordinate magnetized for the first time with position of magnetizing for the second time is calculated according to the coordinate of the center of magnetizing coil 3, it is aobvious in input
The coordinate that input is magnetized for the first time in display screen 6, controller starts servomotor 9 and servomotor 12, servomotor 9 according to coordinate
Drive Y-axis movable block 8 movable along Y-axis moving track 7, servomotor 12 drives X-axis movable block 11 along Y-axis moving track 10
Move left and right, and then change the position of permanent magnet 4 with position adjustment bar 13, permanent magnet 4 is reached the coordinate bit magnetized for the first time
Put.After the completion of magnetizing for the first time, X, the coordinate of Y value are re-entered, position adjustment bar 13 just can move right permanent magnet
1.8mm, is magnetized for the second time.It can so make the position magnetized twice the most accurate.
Permanent magnet after the present invention magnetizes, magnetized for the second time to first time respectively measured without magnetic region, is magnetized for the first time
The measurement result of permanent magnet afterwards is as shown in figure 5, weak magnetic sector width is 1.2mm；The measurement knot of permanent magnet after magnetizing for the second time
Fruit is as shown in fig. 6, weak magnetic sector width is 0.6mm, it can be seen that, relative to once magnetizing, magnetized forever using this method
The weak magnetic sector width of magnet can reduce 1/3~1/2 or so.
The present invention is described in detail above in association with embodiment, but the content is only the preferable implementation of the present invention
Example, it is impossible to be considered as the practical range for limiting the present invention.All equivalent changes made according to the present patent application scope and improvement
Deng within the patent covering scope that all should still fall within the present invention.
Claims (4)
1. a kind of magnetization method of permanent magnet, it is characterised in that it comprises the following steps：
(1) position of permanent magnet weak magnetic area axis is determined；
(2) permanent magnet is placed on multi-pole magnetizing head, makes the weak magnetic area axis of permanent magnet to the left positioned at magnetizing coil axis,
Distance to the left is that the magnetizing coil in the 1/2 of the diameter of wire of composition magnetizing coil, multi-pole magnetizing head is powered, and is carried out for the first time
Magnetize；
(3) permanent magnet is moved right, permanent magnet weak magnetic area axis is located at magnetizing coil axis distance to the right, to the right
For the 1/2 of the diameter of wire that constitutes magnetizing coil, the magnetizing coil in multi-pole magnetizing head is once again powered up, and is magnetized for the second time,
Described first time magnetizes identical with the sense of current that magnetizes magnetized for the second time, and size of current is identical.
2. the magnetization method of permanent magnet according to claim 1, it is characterised in that：Described multi-pole magnetizing head includes above filling
Magnetic head and lower magnetized head, upper magnetized head are located in the surface of lower magnetized head, upper magnetized head and lower magnetized head and are equipped with built-in pole
Magnetizing coil is equipped with core, built-in pole piece, described magnetizing coil is coiled into by wire, and the coil position of magnetized head is mutual up and down
Correspondence.
3. the magnetization method of permanent magnet according to claim 1, it is characterised in that：The two neighboring weak magnetic of described permanent magnet
The axis in area is the center line of permanent magnet.
4. the magnetization method of permanent magnet according to claim 1, it is characterised in that：The first time magnetizes and filled for the second time
During magnetic, the position of permanent magnet is adjusted by servomotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710722639.4A CN107301914A (en) | 2017-08-22 | 2017-08-22 | A kind of magnetization method of permanent magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710722639.4A CN107301914A (en) | 2017-08-22 | 2017-08-22 | A kind of magnetization method of permanent magnet |
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| Publication Number | Publication Date |
|---|---|
| CN107301914A true CN107301914A (en) | 2017-10-27 |
Family
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|---|---|---|---|
| CN201710722639.4A Pending CN107301914A (en) | 2017-08-22 | 2017-08-22 | A kind of magnetization method of permanent magnet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111524681A (en) * | 2020-03-29 | 2020-08-11 | 至玥腾风科技集团有限公司 | Magnetizing method of permanent magnet and manufacturing method of high-speed rotor |
Citations (7)
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|---|---|---|---|---|
| JP3685716B2 (en) * | 2000-12-28 | 2005-08-24 | 東京パーツ工業株式会社 | A magnetizing method for a permanent magnet for an axial gap motor, a permanent magnet created by the magnetizing method, a magnetizing device for creating the magnet, and an axial gap motor provided with the magnet. |
| JP2008054380A (en) * | 2006-08-22 | 2008-03-06 | Tdk Corp | Method and device for magnetizing permanent magnet |
| CN202058532U (en) * | 2011-03-31 | 2011-11-30 | 浙江翔宇密封件有限公司 | Positioning device for magnetizing of plane multi-polar magnetic ring |
| CN103065763A (en) * | 2013-01-16 | 2013-04-24 | 浙江大学 | Magnetizing apparatus on basis of flywheel energy storage |
| CN103295730A (en) * | 2012-12-27 | 2013-09-11 | 浙江省东阳市诚基电机有限公司 | Magnetizing fixture |
| CN204010884U (en) * | 2014-07-21 | 2014-12-10 | 安徽大地熊新材料股份有限公司 | Permanent magnet product magnetizer |
| CN105390230A (en) * | 2015-11-13 | 2016-03-09 | 横店集团东磁股份有限公司 | Two-sided synchronous magnetization apparatus for permanent magnetic ferrite |
-
2017
- 2017-08-22 CN CN201710722639.4A patent/CN107301914A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3685716B2 (en) * | 2000-12-28 | 2005-08-24 | 東京パーツ工業株式会社 | A magnetizing method for a permanent magnet for an axial gap motor, a permanent magnet created by the magnetizing method, a magnetizing device for creating the magnet, and an axial gap motor provided with the magnet. |
| JP2008054380A (en) * | 2006-08-22 | 2008-03-06 | Tdk Corp | Method and device for magnetizing permanent magnet |
| CN202058532U (en) * | 2011-03-31 | 2011-11-30 | 浙江翔宇密封件有限公司 | Positioning device for magnetizing of plane multi-polar magnetic ring |
| CN103295730A (en) * | 2012-12-27 | 2013-09-11 | 浙江省东阳市诚基电机有限公司 | Magnetizing fixture |
| CN103065763A (en) * | 2013-01-16 | 2013-04-24 | 浙江大学 | Magnetizing apparatus on basis of flywheel energy storage |
| CN204010884U (en) * | 2014-07-21 | 2014-12-10 | 安徽大地熊新材料股份有限公司 | Permanent magnet product magnetizer |
| CN105390230A (en) * | 2015-11-13 | 2016-03-09 | 横店集团东磁股份有限公司 | Two-sided synchronous magnetization apparatus for permanent magnetic ferrite |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111524681A (en) * | 2020-03-29 | 2020-08-11 | 至玥腾风科技集团有限公司 | Magnetizing method of permanent magnet and manufacturing method of high-speed rotor |
| CN111524681B (en) * | 2020-03-29 | 2021-07-27 | 靳普 | Magnetizing method of permanent magnet and manufacturing method of high-speed rotor |
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Application publication date: 20171027 |