CN206366916U - A kind of machining magnetic field shielding device containing permanent magnet workpiece - Google Patents
A kind of machining magnetic field shielding device containing permanent magnet workpiece Download PDFInfo
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- CN206366916U CN206366916U CN201621435362.4U CN201621435362U CN206366916U CN 206366916 U CN206366916 U CN 206366916U CN 201621435362 U CN201621435362 U CN 201621435362U CN 206366916 U CN206366916 U CN 206366916U
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- magnetic field
- radome
- permanent magnetism
- end cap
- silicon steel
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Abstract
Permanent magnet is provided with a kind of machining magnetic field shielding device containing permanent magnet workpiece, permanent magnetism workpiece, permanent magnetism workpiece is provided with radome, and radome includes the silicon steel cylinder by silicon steel sheet stack addition, gap is provided between radome and permanent magnetism workpiece.The magnetic field shielding device on set on permanent magnetism workpiece, during so that carrying out the processing of the modes such as turning, milling or grinding to permanent magnetism workpiece, the negative effect in magnetic field can be masked, the precision being processed to permanent magnetism workpiece and the quality of processing is improved, and three coordinates damage the precision of metering.And carry out magnetic field shielding except setting radome in the radial direction of the big permanent magnetism workpiece of magnetic strength field degree, also set end cap in the axial direction of the relatively weak permanent magnetism workpiece of magnetic field intensity and carried out magnetic field shielding, so that all directions to permanent magnetism workpiece have all carried out comprehensive magnetic field shielding.
Description
Technical field
The utility model is related to a kind of magnetic field shielding device, and in particular to a kind of magnetic of permanent-magnet pieces when being machined
Field shield device.
Background technology
When carrying out the processing of the modes such as turning, milling or grinding to permanent magnetism workpiece, due to being carried forever in permanent magnetism workpiece
Magnet so that permanent magnetism workpiece produces magnetic field.Therefore lathe to permanent magnetism workpiece when being processed, and permanent magnetism workpiece can be to machine
Bed produces magnetic force, and lathe can be influenceed to carry out the precision of turning, milling or grinding and the quality of processing to permanent magnetism workpiece.Cause
This is, it is necessary to which the direction in the magnetic field that a set of magnetic field shielding device change permanent magnetism workpiece is produced, reaches permanent magnetism workpiece magnetic field screen
The effect covered.Be allowed to reduce permanent magnetism workpiece be processed with the influence during three coordinate metrologies, evade permanent magnetism workpiece
Lathe and three coordinates are damaged and measure the unfavorable factor produced in the magnetic field of generation.
And magnetic field shielding device is fixed on permanent magnetism workpiece, allow magnetic field shielding device to be rotated with permanent magnetism workpiece
When, it is necessary to fix magnetic field shielding device very firm, and need the entirety that constitutes magnetic field shielding device and permanent magnetism workpiece
Center of gravity fall on the axle center of permanent magnetism workpiece, described entirety is not produced obvious vibration in quick rotation, make plus
Work can be carried out smoothly.
Find that following patent and the utility model have similarity by country's retrieval：
A kind of Application No. 200910087221.6, the invention of entitled " tile type shielding device of cylinder-shaped permanent magnet " is related to
A kind of tile type shielding device of cylinder-shaped permanent magnet, there is a frame, provided with a support component, the support group in the frame
Part includes left half axle, hollow barrel-type magnetic conduction mandrel, right axle shaft；It is provided with the hollow barrel-type magnetic conduction mandrel coaxial arranged side by side
Two cylinder-shaped permanent magnets, a rotary shielding body is externally provided with described two cylinder-shaped permanent magnets, and the rotary shielding body includes two
Shoe barricade；The shoe barricade is covered on the outer cylinder magnetic pole of two cylinder-shaped permanent magnets, and the shoe barricade passes through
Terminal pad is rotated to be rotatablely installed with the left and right half.This invention is externally provided with one turn using in described two cylinder-shaped permanent magnets
The design of dynamic shield, with uniform force feature；Less power only need to be inputted by power input wheel, just be can reach not
With the purpose of area change magnetic induction intensity；Using hollow barrel-type magnetic conduction core shaft design, two shoe barricades can be made with
Empty cylindrical magnetic conducting mandrel formation magnetic conductive loop.
A kind of Application No. 201010262419.6, the invention of entitled " magnetic field shielding case " is 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 or twice hydrogen shield thermal annealing, first time thermal annealing are carried out to the iron-nickel alloy sheet material
Temperature control is allowed to cool between 1100-1200 DEG C after being heated 2 hours to iron-nickel alloy sheet material, is then carried out second
Thermal annealing, second of thermal annealing temperatures control makes it between 1100-1200 DEG C after being heated 4 hours to iron-nickel alloy sheet material
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 2 under the conditions of 1000 DEG C
Without cooling after hour heating, and then carry out heating for 4 hours under the conditions of 1100 DEG C, then by iron-nickel alloy sheet material certainly
So cooling.The radome can be effectively electromagnetically shielded, and equipment, device are from electromagnetic interference in protective cover.
Although being directed to magnetic field shielding in above-mentioned two patent, above-mentioned patent all not no silicon steel of use lamination
The gap stayed between lamella and permanent magnetism workpiece coordinates, and carrys out armoured magnetic field.Also all it is not intended to solve asking for machining accuracy
Topic, and above-mentioned patent does not disclose the screening arrangement and method of split-type yet.Therefore, above-mentioned patent and the utility model are in skill
There is larger difference in terms of art field, the technical problem solved.
Utility model content
The technical problems to be solved in the utility model is：How turning, milling or grinding etc. are being carried out to permanent magnetism workpiece
During the processing of mode, it is to avoid the influence of magnetic field and mechanical oscillation to machining, permanent magnetism workpiece can be smoothly processed.
Pin with above mentioned problem, the utility model proposes technical scheme be：1. a kind of machining containing permanent magnet workpiece
Permanent magnet is provided with magnetic field shielding device, permanent magnetism workpiece, it is characterised in that permanent magnetism workpiece is provided with radome, radome
Including the silicon steel cylinder by silicon steel sheet stack addition, gap is provided between radome and permanent magnetism workpiece.
Further, radome also includes shielding cylinder and rubber layer, and shielding cylinder is located at the periphery of silicon steel cylinder, and rubber layer is by silicon
Steel cylinder and shielding cylinder are sulfided into an entirety.
Further, the two ends of radome are provided with end cap, and gap is provided between end cap and permanent magnetism workpiece, and end cap includes silicon
Steel lid, silicon steel lid is formed by stacking by silicon steel sheet.
Further, end cap also includes screening cover and end cap rubber layer, and screening cover is located at the outside of silicon steel lid, end cap rubber
Silicon steel lid and screening cover are sulfided into an entirety by layer.
Further, radome and end cap are all split-type structure so that radome can be taken apart, and end cap can also be taken apart.
Further, it is provided with radome on mounting hole, end cap and is provided with the peace corresponding with the mounting hole on radome
Hole is filled, radome and end cap are attached and fixed through the mounting hole on radome and end cap by bolt.
Further, the lower section of radome is provided with support, and support includes support block, support bar and bottom plate；Support block is circle
Arcuation, support bar is located between support block and bottom plate.
Further, radome is arranged in the support block of arc-shaped, and the internal diameter of support block is less than or equal to radome
External diameter.
The utility model has the advantages that：
1. the magnetic field shielding device on set on permanent magnetism workpiece so that turning, milling or grinding are carried out to permanent magnetism workpiece
Etc. mode processing when, can mask the negative effect in magnetic field, improve the precision being processed to permanent magnetism workpiece and processing
Quality, and three coordinates damage the precision of metering.
2. magnetic field shielding is carried out except setting radome in the radial direction of the big permanent magnetism workpiece of magnetic strength field degree, also in magnetic field
The axial direction of the relatively weak permanent magnetism workpiece of intensity sets end cap and has carried out magnetic field shielding, so that each to permanent magnetism workpiece
Direction has all carried out comprehensive magnetic field shielding.
3. being designed with two layers of magnet shielding structure in radome and end cap, the magnetic field produced to permanent magnetism workpiece is in each side
To all being shielded twice, further reduce influence of the magnetic field to processing.
4. radome and end cap are arranged to the structure of split-type, the magnetic field shielding device that radome and end cap are constituted
It is enclosed on permanent magnetism workpiece, can makes to leave certain gap between magnetic field shielding device and permanent magnetism workpiece, without with permanent magnetism adding
Workpiece is rotated together, is avoided that magnetic field shielding device rotates easily caused loosen and vibration problem together with permanent magnetism workpiece.
5. the shielding cylinder in radome and silicon steel cylinder are sulfided, and the screening cover in end cap and silicon steel lid are vulcanized
Together, the stabilized structure of radome and end cap can be made, dismounting is easy, quick.
6. setting support below radome, and make the adjustable length of the support bar in support, can be according to permanent magnetism workpiece
Physical location, the height of adjusting bracket so that the radome and the height of end cap being placed on support can be with permanent magnetism workpieces
Height match.
Brief description of the drawings
Fig. 1 is the schematic cross-sectional view of embodiment one；
Fig. 2 is the radome in Fig. 1 and the schematic diagram after end cap fractionation；
Fig. 3 is the schematic cross-sectional view that embodiment one is enclosed on permanent magnetism workpiece；
Fig. 4 is the sectional schematic in Fig. 3 along A-A；
Fig. 5 is sectional view of the permanent magnetism workpiece along A-A in Fig. 3；
Fig. 6 is the dimensional structure diagram of embodiment one；
Fig. 7 is the schematic perspective view after radome in embodiment one and end cap fractionation；
Fig. 8 is the schematic perspective view after radome fractionation in embodiment one；
Fig. 9 is the schematic perspective view of the medium-height trestle of embodiment one；
In figure：1 radome, 11 shielding cylinders, 12 rubber layers, 13 silicon steel cylinder, 14 gaps, 2 end caps, 21 screening covers, 22 end caps
Rubber layer, 23 silicon steel lids, 24 pilot holes, 3 supports, 31 support blocks, 32 support bars, 33 bottom plates, 4 mounting holes, 5 permanent magnetism workpieces,
51 permanent magnets.
Embodiment
The description of a step is done to the utility model with reference to embodiment and accompanying drawing：
Embodiment one
As shown in Figure 1, Figure 2 and Figure 3, magnetic field shielding device includes radome 1 and end cap 2, and radome 1 includes shielding cylinder
11st, rubber layer 12 and silicon steel cylinder 13, end cap 2 includes screening cover 21, end cap rubber layer 22, silicon steel lid 23 and pilot hole 24.Wherein
Silicon steel cylinder 13 and silicon steel lid 23 are all formed by stacking by multi-disc thin silicon steel plates.And shielding cylinder 11 and screening cover 21 can be by pure
Iron and mild steel, iron Si system alloy, iron aluminum series alloy, iron silicon aluminum series alloy, nickel iron-based alloy, iron Co-based alloy, soft magnet oxygen
The permeability magnetic materials such as body, amorphous soft magnetic alloy, super-microcrystalline soft magnetic alloy are made.
Silicon steel cylinder 13 and shielding cylinder 11 are sulfided into by an entirety by rubber layer 12, and shielding cylinder 11 is located at silicon steel cylinder 13
Periphery so that shielding cylinder 11, rubber layer 12 and the firm radome 1 of the composition of silicon steel cylinder 13.By end cap rubber layer 22 by silicon
Steel lid 23 and screening cover 21 are sulfided into an entirety, and screening cover 21 is located at the outside of silicon steel lid 23 so that screening cover 21, end cap
Rubber layer 22 and the firm end cap 2 of the composition of silicon steel lid 23.In order to be able to which end cap 2 is enclosed on permanent magnetism workpiece 5, also opened on end cap 2
There is the pilot hole 24 of insertion end cap 2.
It is between leaving when radome 1 and end cap 2 are enclosed on permanent magnetism workpiece 5, between radome 1 and permanent magnetism workpiece 5
Gap 14；And the size of the pilot hole 24 on end cap 2 is more than the size of permanent magnetism workpiece 5 so that end cap 2 and permanent magnetism workpiece 5
Between there is also gap 14.In fact, the magnetic field shielding device that radome 1 and end cap 2 are constituted is supported by support 3
So that whole magnetic field shielding device is all simply enclosed on permanent magnetism workpiece 5, but is not contacted with permanent magnetism workpiece 5.
As shown in Fig. 6 and Fig. 9, support 3 includes support block 31, support bar 32 and bottom plate 33, and support block 31 is arranged to circular arc
Shape, and external diameter of the internal diameter equal to or slightly less than radome 1 of support block 31 so that when magnetic field shielding device is placed in support block 31
It is difficult to rotate or mobile.Support bar 32, can be according to the physical location of permanent magnetism workpiece 5, the height of adjusting bracket 3 to be length-adjustable
Degree so that the radome 1 and the height of end cap 2 being placed on support 3 can match with the height of permanent magnetism workpiece 5.
As shown in Fig. 3, Fig. 4 and Fig. 5, in the present embodiment, the principle of magnetic field shielding is as follows：Silicon steel cylinder 13 in radome 1
Gap 14 is left between silicon steel sheet stack addition, and silicon steel cylinder 13 and permanent magnetism workpiece 5, because the magnetic conductivity of silicon steel sheet is much larger than
When the magnetic induction line sent in the magnetic conductivity of air at gap 14, therefore permanent magnetism workpiece 5 is entered in silicon steel cylinder 13 from space,
Direction can produce and significantly deflect, and can form closed-loop path between permanent magnetism workpiece 5, gap 14 and silicon steel cylinder 13, so
Most of magnetic induction line all changes original traffic direction, forms described closed-loop path.So that silicon steel cylinder 13
The magnetic field produced in permanent magnetism workpiece 5 is shielded.
Due to being the gap that there is very little between the silicon steel sheet in silicon steel cylinder 13, have minimal amount of magnetic induction line not by
Mask, form certain leakage field phenomenon.And it is sequentially provided with rubber layer 12 and shielding cylinder 11, wherein rubber in the periphery of silicon steel cylinder 13
Glue-line 12 is made up of the rubber of non-magnet material, and shielding cylinder 11 is made up of permeability magnetic material.Therefore, the magnetic conductivity of shielding cylinder 11 can be remote
More than the magnetic conductivity of rubber layer 12, shielding cylinder 11 can again be shielded to the minimal amount of magnetic induction line missed, and further be improved
The effect of magnetic field shielding.
As shown in Figure 1, Figure 2, shown in Fig. 6 and Fig. 7, shielding cylinder 11 to the magnetic field of the radial direction produced in permanent magnetism workpiece 5, or
Person says that the magnetic field of circumferential direction is shielded.And the magnetic field that end cap 2 is then the axial direction to being produced in permanent magnetism workpiece 5 is carried out
Shielding, and the principle that the magnetic field shielding principle of end cap 2 carries out magnetic field shielding with shielding cylinder 11 is identical.It is first to adopt in end cap 2
First time shielding is carried out to the magnetic field produced in permanent magnetism workpiece 5 with the silicon steel lid 23 of silicon steel sheet stack addition, and uses screening cover
The magnetic field produced in 21 pairs of permanent magnetism workpieces 5 is further shielded.
As shown in Fig. 3, Fig. 6, Fig. 7 and Fig. 8, in order to allow magnetic field shielding device to be quickly installed on permanent magnetism workpiece 5, enter
Row magnetic field shielding, meanwhile, also for solving when magnetic field shielding device is rotated with permanent magnetism workpiece 5 loosening that is also easy to produce and shake
Dynamic phenomenon, allows permanent magnetism workpiece 5 smoothly to carry out the processing of the modes such as turning, milling or grinding.In magnetic field shielding device
It is detachable between radome 1 and end cap 2, and radome 1 and end cap 2 are also split-type structure so that radome 1 and end cap
2 be also detachable in itself.And magnetic field shielding device, when being enclosed on permanent magnetism workpiece 5, radome 1 and end cap 2 all add with permanent magnetism
There is gap 14 between workpiece 5, magnetic field shielding device is supported and fixed by support 3.
It is by silicon steel cylinder 13 and shielding cylinder 11 by rubber layer 12 to realize the split-type structure of radome 1 and end cap 2
It is sulfided into an entirety, and silicon steel lid 23 and screening cover 21 are sulfided into by an entirety by end cap rubber layer 22.This implementation
In example, radome 1 and end cap 2 are all divided into 2 valves, and are all an independent, firm entirety per valve.In order to by the screen of 2 valves
The end cap 2 for covering the valve of cover 1 and 2 constitutes the entirety of a magnetic field shielding device, and mounting hole 4 is all provided with radome 1 and end cap 2,
Radome 1 and end cap 2 can be connected through mounting hole 4 with bolt, be fixed into an entirety.
As shown in Figures 1 to 9, when to carry out magnetic field shielding and machining to permanent magnetism workpiece 5, only need first by 2 valves
The valve end cap 2 of radome 1 and 2 is wrapped on permanent magnetism workpiece 5, then passes through the mounting hole 4 on radome 1 and end cap 2 with bolt
Radome 1 and end cap 2 are connected into the magnetic field shielding device of an entirety.And it is placed on the arc-shaped support of support 3 in radome 1
In block 31, the height of regulation support bar 32 makes to leave less gap 14 between end cap 2 and permanent magnetism workpiece 5.
Embodiment two
It is with the difference of embodiment one, radome 1 only includes silicon steel cylinder 13, without shielding cylinder 11, silicon steel cylinder
Passed through, and tightened at screw rod two ends with nut with screw rod between silicon steel sheet in 13, so as to compress silicon steel sheet.End cap 2 is also only wrapped
Silicon steel lid 23 is included, without screening cover 21, is passed through between the silicon steel sheet in silicon steel lid 23 with screw rod, and in screw rod two ends nut
Tighten.That is, all only carrying out Primary field shielding on radome 1 and end cap 2.The present embodiment can be applied to permanent magnetism processing
In the little operating mode of magnetic field intensity that part 5 is produced, the cost of manufacture of magnetic field shielding device can be saved.
Embodiment three
It is with the difference of embodiment one, radome 1 and end cap 2 are not split-type structures, but allows radome 1
Section with end cap 2 is all a complete annulus.And radome 1 and end cap 2 are sulfided into an entirety, or it is welded into one
Individual entirety.The present embodiment can be applied in the quick detachable operating mode in one end of permanent magnetism workpiece 5, when installing magnetic field shielding device, first
One end of permanent magnetism workpiece 5 is split out, overall magnetic field shielding device is directly sleeved on permanent magnetism workpiece 5, permanent magnetism is loaded on
One end of workpiece 5.
It will be apparent that on the premise of principle described in the utility model is not departed from, some improvement or modification made should all be regarded
For protection domain of the present utility model.
Claims (8)
1. a kind of machining magnetic field shielding device containing permanent magnet workpiece, permanent magnetism workpiece（5）In be provided with permanent magnet（51）, its
It is characterised by, permanent magnetism workpiece（5）It is provided with radome（1）, radome（1）Including the silicon steel cylinder by silicon steel sheet stack addition
（13）, in radome（1）With permanent magnetism workpiece（5）Between be provided with gap（14）.
2. a kind of machining magnetic field shielding device containing permanent magnet workpiece according to claim 1, it is characterised in that screen
Cover cover（1）Also include shielding cylinder（11）And rubber layer（12）, shielding cylinder（11）It is located at silicon steel cylinder（13）Periphery, rubber layer（12）
By silicon steel cylinder（13）And shielding cylinder（11）It is sulfided into an entirety.
3. a kind of machining magnetic field shielding device containing permanent magnet workpiece according to claim 2, it is characterised in that screen
Cover cover（1）Two ends be provided with end cap（2）, end cap（2）With permanent magnetism workpiece（5）Between be provided with gap（14）, end cap（2）Including silicon
Steel lid（23）, silicon steel lid（23）It is formed by stacking by silicon steel sheet.
4. a kind of machining magnetic field shielding device containing permanent magnet workpiece according to claim 3, it is characterised in that end
Lid（2）Also include screening cover（21）With end cap rubber layer（22）, screening cover（21）It is located at silicon steel lid（23）Outside, end cap rubber
Layer（22）By silicon steel lid（23）And screening cover（21）It is sulfided into an entirety.
5. a kind of machining magnetic field shielding device containing permanent magnet workpiece according to claim 3, it is characterised in that screen
Cover cover（1）And end cap（2）All it is split-type structure so that radome（1）It can take apart, end cap（2）Also it can take apart.
6. a kind of machining magnetic field shielding device containing permanent magnet workpiece according to any one of claim 3-5, its
It is characterised by, in radome（1）On be provided with mounting hole（4）, end cap（2）On be provided with and radome（1）On mounting hole（4）Relatively
The mounting hole answered（4）, bolt is passed through into radome（1）And end cap（2）On mounting hole（4）By radome（1）And end cap（2）Enter
Row is connected and fixed.
7. a kind of machining magnetic field shielding device containing permanent magnet workpiece according to claim 1, it is characterised in that screen
Cover cover（1）Lower section be provided with support（3）, support（3）Including support block（31）, support bar（32）And bottom plate（33）；Support block
（31）For arc-shaped, support bar（32）It is located at support block（31）With bottom plate（33）Between.
8. a kind of machining magnetic field shielding device containing permanent magnet workpiece according to claim 7, it is characterised in that screen
Cover cover（1）Installed in the support block of arc-shaped（31）It is interior, support block（31）Internal diameter be less than or equal to radome（1）External diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621435362.4U CN206366916U (en) | 2016-12-26 | 2016-12-26 | A kind of machining magnetic field shielding device containing permanent magnet workpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621435362.4U CN206366916U (en) | 2016-12-26 | 2016-12-26 | A kind of machining magnetic field shielding device containing permanent magnet workpiece |
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| Publication Number | Publication Date |
|---|---|
| CN206366916U true CN206366916U (en) | 2017-08-01 |
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ID=59392513
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| CN201621435362.4U Active CN206366916U (en) | 2016-12-26 | 2016-12-26 | A kind of machining magnetic field shielding device containing permanent magnet workpiece |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106737202A (en) * | 2016-12-26 | 2017-05-31 | 株洲九方装备股份有限公司 | A kind of machining magnetic field shielding method and device containing permanent magnet workpiece |
-
2016
- 2016-12-26 CN CN201621435362.4U patent/CN206366916U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106737202A (en) * | 2016-12-26 | 2017-05-31 | 株洲九方装备股份有限公司 | A kind of machining magnetic field shielding method and device containing permanent magnet workpiece |
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