CN106549539A - A kind of magnetic field shielding device of permanent magnetism rotor axis mechanical processing - Google Patents
A kind of magnetic field shielding device of permanent magnetism rotor axis mechanical processing Download PDFInfo
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- CN106549539A CN106549539A CN201611215873.XA CN201611215873A CN106549539A CN 106549539 A CN106549539 A CN 106549539A CN 201611215873 A CN201611215873 A CN 201611215873A CN 106549539 A CN106549539 A CN 106549539A
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- silicon steel
- magnetic field
- permanent magnetism
- shielding device
- field shielding
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- 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
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- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
A kind of magnetic field shielding device of permanent magnetism rotor axis mechanical processing, p-m rotor includes permanent magnetism rotating shaft, permanent magnet and iron core, permanent magnet and iron core are enclosed within permanent magnetism rotating shaft together, magnetic field shielding device is cased with p-m rotor, silicon steel lamella is provided with magnetic field shielding device, between silicon steel lamella and p-m rotor, gap is provided with.Using the silicon steel lamella on the outer sheath of p-m rotor, and make to leave gap between silicon steel lamella and p-m rotor, the magnetic induction intensity that significantly can decay outside silicon steel lamella, so as to shield to the magnetic field that rotor is produced, the precision of permanent magnetism rotating shaft processing and the quality of processing are improved, and three coordinates damage the precision of metering.
Description
Technical field
The present invention relates to a kind of magnetic field shielding device, and in particular to produce when one kind prevents magnetic field to be processed permanent magnetism rotating shaft
The device that life affects and shields magnetic field.
Background technology
To the processing of permanent magnetism rotating shaft be first to permanent magnetism rotating shaft roughing after the completion of, permanent magnet is installed in place.In order to ensure
The mechanical precision of permanent magnetism rotating shaft, needs to carry out permanent magnetism rotating shaft grinding again, and send three coordinate metrologies.In grinding and three
During coordinate metrology, with magnetic, when lathe carries out grinding to permanent magnetism rotating shaft, p-m rotor can be to lathe for p-m rotor
Magnetic force is produced, can affect lathe that the precision of grinding and the quality of processing are carried out to permanent magnetism rotating shaft.Accordingly, it would be desirable to a set of magnetic field
Screening arrangement changes the direction in the magnetic field that rotor is produced, and reaches the effect of permanent magnetism rotating shaft magnetic field shielding.It is allowed to reduce in grinding
Impact during processing and three coordinate metrologies, the magnetic field for evading p-m rotor generation damage what metering was produced to lathe and three coordinates
Unfavorable factor.
Find that following patent has similarity with the present invention by domestic retrieval：
Application No. 200910087221.6, the invention of entitled " a kind of tile type shielding device of cylinder-shaped permanent magnet " are related to one kind
The tile type shielding device of cylinder-shaped permanent magnet, has a frame, and a support component is provided with the frame, the support component bag
Include left half axle, hollow barrel-type magnetic conduction mandrel, right axle shaft；Coaxially arranged side by side two are provided with the hollow barrel-type magnetic conduction mandrel
Cylinder-shaped permanent magnet, is externally provided with a rotary shielding body in described two cylinder-shaped permanent magnets, and the rotary shielding body includes two shoes
Barricade；The shoe barricade is covered on the outer cylinder magnetic pole of two cylinder-shaped permanent magnets, and the shoe barricade is by rotating
Terminal pad is rotated with the left and right half and is installed.This invention is externally provided with a rotation screen using in described two cylinder-shaped permanent magnets
The design of body is covered, with uniform force feature；Only less power need to be input into by power input wheel, just be can reach in not same district
Domain changes the purpose of magnetic induction intensity；Using hollow barrel-type magnetic conduction core shaft design, two shoe barricades and hollow can be made
Shape magnetic conduction mandrel forms magnetic conductive loop.
Application No. 201010262419.6, the invention of entitled " a kind of magnetic field shielding case " are related to a kind of magnetic field shielding
Cover, including cover body, the material of the cover body is iron-nickel alloy sheet material, and the iron-nickel alloy sheet material is carried out in the following two kinds heat treatment mode
One kind：A) vacuum annealing twice is carried out to the iron-nickel alloy sheet material or hydrogen shield thermal annealing twice, first time thermal annealing
Temperature control is allowed to cool after heating 2 hours to iron-nickel alloy sheet material between 1100-1200 DEG C, subsequently carries out second
Thermal annealing, the control of second thermal annealing temperatures make which after heating 4 hours to iron-nickel alloy sheet material between 1100-1200 DEG C
Cooling；B) two-part thermal annealing is carried out to the iron-nickel alloy sheet material, iron-nickel alloy sheet material is first carried out under the conditions of 1000 DEG C 2
Do not cooled down after hour heating, and then carry out 4 hours heating under the conditions of 1100 DEG C, subsequently by iron-nickel alloy sheet material certainly
So cool down.The radome effectively can be electromagnetically shielded, and in protective cover, equipment, device are from electromagnetic interference.
Although magnetic field shielding has been directed in above-mentioned two patent, above-mentioned patent all not no silicon steel of employing lamination
The gap stayed between piece and silicon steel lamella and p-m rotor coordinates, and carrys out armoured magnetic field, is also all not intended to solve machining essence
The problem of degree.Therefore, above-mentioned patent and the present invention have larger different at technical field, the aspect such as technical problem for solving.
The content of the invention
The technical problem to be solved in the present invention is：How after permanent magnet installation, evade the magnetic field pair of rotor generation
The magnetic force of lathe affects, so as to accurate grinding and three coordinate metrologies are carried out to permanent magnetism rotating shaft.
With the problems referred to above, technical scheme proposed by the present invention is pin：A kind of magnetic field shielding dress of permanent magnetism rotor axis mechanical processing
Put, p-m rotor includes that permanent magnetism rotating shaft, permanent magnet and iron core, permanent magnet and iron core are enclosed within permanent magnetism rotating shaft together, turn in permanent magnetism
Magnetic field shielding device is cased with son, silicon steel lamella is provided with magnetic field shielding device, between being provided between silicon steel lamella and p-m rotor
Gap.
Further, magnetic field shielding device also includes shielding cylinder, screen layer protective case and screw rod；Shielding cylinder is arranged on silicon steel
The outside of lamella, screen layer protective case are arranged on the inner side of silicon steel lamella by interference fit.
Further, screen layer protective case be circular tube shaped, the gap location between silicon steel lamella and p-m rotor, screen
The number for covering layer protective case is more than 1.
Further, the installing hole through silicon steel sheet layer is provided with silicon steel lamella, screw rod passes through described installing hole.
Further, magnetic field shielding device also includes left end cap and right end cap, and insertion is all provided with left end cap and right end cap
Installing hole；Screw rod have passed through the installing hole on silicon steel lamella, also extend through the installing hole on left end cap and right end cap, and in spiral shell
Tightened with clamp nut at the two ends of bar.
Further, silicon steel lamella is formed by stacking by multilayer silicon steel sheet, and silicon steel sheet layer stacking factor is more than or equal to
0.97。
Further, the row that the installing hole through silicon steel sheet layer is provided with silicon steel lamella is more than 2 rows.
It is an advantage of the invention that 1. using the silicon steel lamella on the outer sheath of p-m rotor, and silicon steel lamella is made to turn with permanent magnetism
Gap is left between son, the magnetic induction intensity outside silicon steel lamella of significantly decaying, so as to the magnetic field produced to rotor is carried out
Shielding, improves the precision of permanent magnetism rotating shaft processing and the quality of processing, and three coordinates damage the precision of metering.
2. the shielding cylinder made by permeability alloys material on the outer sheath of silicon steel lamella so that the magnetic induction outside shielding cylinder
Intensity further can decay, and so as to further improve the precision of permanent magnetism rotating shaft processing and the quality of processing, and three coordinates damage meter
The precision of amount.
3. end cap made by permeability alloys material is provided with the two ends of silicon steel lamella, can carry out axle to the magnetic field that rotor is produced
To shielding, it is to avoid turn axial magnetic field along permanent magnetism and processing is had a negative impact.
Description of the drawings
Fig. 1 is the cross-sectional schematic of the present invention；
Fig. 2 is the partial enlarged drawing of a-quadrant in Fig. 1；
Fig. 3 is the cross-sectional schematic of magnetic field shielding device in the present invention；
Fig. 4 is the cross-sectional schematic of p-m rotor in the present invention；
Fig. 5 is the sectional view of A-A in Fig. 4；
Fig. 6 is the partial schematic of the present invention；
In figure：1 p-m rotor, 11 permanent magnetism rotating shafts, 12 permanent magnets, 13 iron cores, 2 magnetic field shielding devices, 21 screen layer protective cases, 22
Silicon steel lamella, 23 shielding cylinders, 24 gaps, 25 screw rods, 26 left end caps, 27 right end caps, 28 clamp nuts, 29 regulating bolts.
Specific embodiment
The description of a step is done to the present invention with reference to embodiment and accompanying drawing：
Embodiment one
Shown as shown in Figure 1, Figure 3 and Figure 4, magnetic field shielding device 2 is enclosed within p-m rotor 1, to the permanent magnet 12 in p-m rotor 1
The magnetic field of generation is shielded.Wherein p-m rotor 1 includes：Permanent magnetism rotating shaft 11, permanent magnet 12 and iron core 13.And magnetic field shielding dress
Putting 2 includes：Shielding cylinder 23, silicon steel lamella 22, screen layer protective case 21, screw rod 25, left end cap 26 and right end cap 27.Wherein left end
Lid 26 and right end cap 27 are provided on the axial direction of permanent magnetism rotating shaft 11, and shielding cylinder 23, silicon steel lamella 22 and screen layer are protected
Sheath 21 is to be arranged in the circumferential direction of permanent magnetism rotating shaft 11 from outside to inside.
As shown in Figure 1, Figure 2 and Figure 3, magnetic field shielding device 2 is installed to into the step of magnetic field shielding being realized on p-m rotor 1
It is：Installing hole is all provided with left end cap 26 and right end cap 27, screw rod 25 first can be passed through in left end cap 26 or right end cap 27
It is individual, for example, through right end cap 27.As screw rod 25 is that centre is polished rod, two ends are provided with externally threaded rhabodoid.Therefore, screw rod
25 pass through right end cap 27, and the one end for stretching out right end cap 27 is screwed on clamp nut 28, can prevent from being screwed with the one of clamp nut 28
Extract out from right end cap 27 at end.
Then shielding cylinder 23 is fixed on right end cap 27, then the silicon steel sheet for being provided with installing hole is passed through screw rod from level to level
25, when silicon steel sheet stack is added to the thickness with the similar length of a screen layer protective case 21, screen layer protective case 21 was passed through
Cooperation of being full of is assembled.Then it is Reduplicated that silicon steel sheet is passed through screw rod 25 from level to level, then another screen layer protection is assembled again
Set 21, the requirement needed for the length of the thickness and screen layer protective case 21 of silicon steel sheet reaches.
Screen layer protective case 21 is divided into into multiple, silicon steel sheet and screen layer protective case 21 to be divided into repeatedly carry out and is repeated assembling
It is for the difficulty for reducing installation.Because, in order to allow the discharge that silicon steel sheet can be neat in magnetic field shielding device 2, screen layer to protect
Sheath 21 carries out interference fit with silicon steel sheet and is installed, it is therefore desirable to the power of larger extruding.If screen layer is protected
Sheath 21 is fabricated to an entirety, disposable to install, and installation can be caused to become very time-consuming, laborious.
Finally left end cap 26 is covered again, and the clamp nut 28 at 25 two ends of screw rod is all tightened, so as to silicon steel lamella 22 is pressed
Tightly.In order to ensure magnetic field shielding device 2 is coaxial with p-m rotor 1, arrange in the circumferential direction of left end cap 26 and right end cap 27
There is regulating bolt 29.This allows for shielding cylinder 23, silicon steel lamella 22, screen layer protective case 21, screw rod 25, left end cap 26 and right-hand member
Lid 27 defines the magnetic field shielding device 2 of an entirety.
The installing hole of the insertion opened on left end cap 26, right end cap 27 and silicon steel lamella 22 is defined in magnetic field shielding device 2
Several rows of installing hole.In order to silicon steel lamella 22 more can be stably mounted in magnetic field shielding device 2, the row of the installing hole
Number is more than 2 rows, and all uses a screw rod 25 to pass through in often arranging installing hole.
As shown in Figure 4 and Figure 5, when magnetic field shielding device 2 is fitted without on p-m rotor 1, lathe is to permanent magnetism rotating shaft 11
Two ends when carrying out grinding, the magnetic field that can be produced on the permanent magnet 12 in p-m rotor 1, so as to magnetic can be produced to lathe
Power.Especially in the circumferential direction of permanent magnetism rotating shaft 11, p-m rotor 1 can produce larger magnetic force to lathe, can affect lathe
The precision of grinding and the quality of processing are carried out to permanent magnetism rotating shaft 11.
As shown in figures 1 to 6, what metering was produced is damaged to lathe and three coordinates in order to evade the magnetic field of the generation of p-m rotor 1
Unfavorable factor.Magnetic field shielding device 2 is installed on p-m rotor 1, the magnetic field to producing on the permanent magnet 12 in p-m rotor 1 is entered
Row shielding.
As the magnetic conductivity of two kinds of mediums of permeability magnetic material and non-magnet material generally differs greatly, the magnetic conductivity of permeability magnetic material
With the ratio of the magnetic conductivity of non-magnet material up to thousands of even hundreds thousand of.When magnetic induction line is from gap 24 and screen layer protective case
21 enter silicon steel lamella 22 when, due at gap 24 be air, and screen layer protective case 21 be by made by non-magnet material, because
This, when magnetic induction line is from the little screen layer protective case 21 of magnetic conductivity into magnetic conductivity big silicon steel lamella 22, magnetic induction line is relative to right
The deviation of normal can be very big, and magnetic induction line can be allowed to produce strong convergence.Dotted portion in Fig. 6 is the magnetic induction line of local in this reality
Apply the distribution schematic diagram in example.It can be seen that, on the p-m rotor 1 on set after magnetic field shielding device 2, magnetic induction line can occur strong inclined
Turn, converge inside silicon steel lamella 22, and do not diffuse to the periphery of silicon steel lamella 22, so as to play a part of magnetic field shielding.
Formed as silicon steel lamella 22 is superimposed by many piece silicon steel, therefore between adjacent silicon steel sheet, understand the sky of very little
Gap, has less leakage field phenomenon.In order to reduce the leakage field of silicon steel lamella 22, by the spiral shell through silicon steel lamella 22 in the present embodiment
The clamp nut 28 at the two ends of bar 25 is tightened, and so as to silicon steel lamella 22 is compressed, 22 stacking factor of silicon steel lamella is more than or is waited
In 0.97.
In order to further reduce leakage field, the shielding cylinder 23 made by permeability alloys material on the outer sheath of silicon steel lamella 22.
Silicon steel lamella 22 and shielding cylinder 23 carry out the shielding of circumferential direction together to the magnetic field that p-m rotor 1 is produced, and 26 He of left end cap
Right end cap 27 carries out the shielding of axial direction to the magnetic field that p-m rotor 1 is produced, so as to realize that magnetic field shielding device 2 turns to permanent magnetism
Sub 1 comprehensive shielding, prevents the magnetic field that p-m rotor 1 is produced from producing magnetic force to lathe, affects permanent magnetism rotating shaft 11 to carry out grinding and adds
The precision of work and the quality of processing.
In the present embodiment, gap 24, the little screen layer protective case of magnetic conductivity between silicon steel lamella 22 and p-m rotor 1, are left
21 are arranged at gap 24, play a part of fixed and smooth silicon steel sheet layer 22.And silicon steel lamella 22, shielding cylinder 23, left end cap
26 and right end cap 27 be all the part for carrying out magnetic field shielding, wherein shielding cylinder 23, left end cap 26 and right end cap 27 is all by magnetic conduction
Alloy material is made.The characteristics of described permeability alloys material is：Magnetic conductivity is big, and iron loss is low；Permeability alloys material includes：Pure iron
With mild steel, iron Si system alloy, iron aluminum series alloy, iron silicon aluminum series alloy, nickel iron-based alloy, iron Co-based alloy, soft magnetic ferrite,
Amorphous soft magnetic alloy, super-microcrystalline soft magnetic alloy etc..
It will be apparent that on the premise of without departing from principle of the present invention, some improvement or modification made are regarded as this
The protection domain of invention.
Claims (7)
1. the magnetic field shielding device that a kind of permanent magnetism rotor axis mechanical is processed, p-m rotor（1）Including permanent magnetism rotating shaft（11）, permanent magnet
（12）And iron core（13）, permanent magnet（12）And iron core（13）Permanent magnetism rotating shaft is enclosed within together（11）On, it is characterised in that turn in permanent magnetism
Son（1）On be cased with magnetic field shielding device（2）, magnetic field shielding device（2）In be provided with silicon steel lamella（22）, silicon steel lamella（22）With forever
Magnet rotor（1）Between be provided with gap（24）.
2. the magnetic field shielding device that a kind of permanent magnetism rotor axis mechanical according to claim 1 is processed, it is characterised in that magnetic field screen
Cover device（2）Also include shielding cylinder（23）, screen layer protective case（21）And screw rod（25）；Shielding cylinder（23）Installed in silicon steel lamella
（22）Outside, screen layer protective case（21）Silicon steel lamella is arranged on by interference fit（22）Inner side.
3. the magnetic field shielding device that a kind of permanent magnetism rotor axis mechanical according to claim 2 is processed, it is characterised in that screen layer
Protective case（21）For circular tube shaped, installed in silicon steel lamella（22）With p-m rotor（1）Between gap（24）Place, screen layer protection
Set（21）Number be more than 1.
4. the magnetic field shielding device that a kind of permanent magnetism rotor axis mechanical according to claim 2 is processed, it is characterised in that silicon steel sheet
Layer（22）On be provided with through silicon steel sheet layer（22）Installing hole, screw rod（25）Through described installing hole.
5. the magnetic field shielding device that a kind of permanent magnetism rotor axis mechanical according to claim 4 is processed, it is characterised in that magnetic field screen
Cover device（2）Also include left end cap（26）And right end cap（27）, left end cap（26）And right end cap（27）On be all provided with the peace of insertion
Dress hole；Screw rod（25）Have passed through silicon steel lamella（22）On installing hole, also extended through left end cap（26）And right end cap（27）On
Installing hole, and in screw rod（25）Two ends clamp nut（28）Tighten.
6. the magnetic field shielding device that a kind of permanent magnetism rotor axis mechanical according to any one in claim 1-5 is processed, which is special
Levy and be, silicon steel lamella（22）It is to be formed by stacking by multilayer silicon steel sheet, silicon steel lamella（22）Stacking factor is more than or equal to 0.97.
7. the magnetic field shielding device that a kind of permanent magnetism rotor axis mechanical according to any one in claim 1-5 is processed, which is special
Levy and be, silicon steel lamella（22）On be provided with through silicon steel sheet layer（22）Installing hole row be 2 rows more than.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611215873.XA CN106549539B (en) | 2016-12-26 | 2016-12-26 | A kind of magnetic field shielding device of permanent magnetism rotor axis mechanical processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611215873.XA CN106549539B (en) | 2016-12-26 | 2016-12-26 | A kind of magnetic field shielding device of permanent magnetism rotor axis mechanical processing |
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| Publication Number | Publication Date |
|---|---|
| CN106549539A true CN106549539A (en) | 2017-03-29 |
| CN106549539B CN106549539B (en) | 2019-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611215873.XA Active CN106549539B (en) | 2016-12-26 | 2016-12-26 | A kind of magnetic field shielding device of permanent magnetism rotor axis mechanical processing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787513A (en) * | 2016-12-26 | 2017-05-31 | 株洲九方装备股份有限公司 | A kind of magnetic field shielding method and device of permanent magnetism rotor axis mechanical processing |
| WO2022081006A2 (en) | 2020-10-15 | 2022-04-21 | Magpol International B.V. | Apparatus for moving a movable module thereof based on magnetic interactions |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0373598A (en) * | 1989-08-15 | 1991-03-28 | Mitsubishi Electric Corp | Magnetic shielding device |
| CN201947600U (en) * | 2011-01-13 | 2011-08-24 | 三环瓦克华（北京）磁性器件有限公司 | Magnetic field shielding device of magnetizing magnetic material |
| CN103779054A (en) * | 2012-10-20 | 2014-05-07 | 郑州汉通电子科技有限公司 | Silicon steel magnetic shielding |
| CN105186803A (en) * | 2015-09-29 | 2015-12-23 | 哈尔滨东安发动机（集团）有限公司 | Manufacturing method for high-speed permanent magnetic rotor |
-
2016
- 2016-12-26 CN CN201611215873.XA patent/CN106549539B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0373598A (en) * | 1989-08-15 | 1991-03-28 | Mitsubishi Electric Corp | Magnetic shielding device |
| CN201947600U (en) * | 2011-01-13 | 2011-08-24 | 三环瓦克华（北京）磁性器件有限公司 | Magnetic field shielding device of magnetizing magnetic material |
| CN103779054A (en) * | 2012-10-20 | 2014-05-07 | 郑州汉通电子科技有限公司 | Silicon steel magnetic shielding |
| CN105186803A (en) * | 2015-09-29 | 2015-12-23 | 哈尔滨东安发动机（集团）有限公司 | Manufacturing method for high-speed permanent magnetic rotor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787513A (en) * | 2016-12-26 | 2017-05-31 | 株洲九方装备股份有限公司 | A kind of magnetic field shielding method and device of permanent magnetism rotor axis mechanical processing |
| WO2022081006A2 (en) | 2020-10-15 | 2022-04-21 | Magpol International B.V. | Apparatus for moving a movable module thereof based on magnetic interactions |
| NL2029385A (en) | 2020-10-15 | 2022-06-16 | Magpol Int B V | Apparatus for moving movable module thereof based on magnetic interactions |
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| Publication number | Publication date |
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| CN106549539B (en) | 2019-01-29 |
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