CN109597008A - Shimming tooling - Google Patents
Shimming tooling Download PDFInfo
- Publication number
- CN109597008A CN109597008A CN201811613560.9A CN201811613560A CN109597008A CN 109597008 A CN109597008 A CN 109597008A CN 201811613560 A CN201811613560 A CN 201811613560A CN 109597008 A CN109597008 A CN 109597008A
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- China
- Prior art keywords
- shaft
- positioning disk
- shimming
- probe
- fixing axle
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
- G01R33/38—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
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- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Abstract
The invention discloses a kind of shimming toolings, comprising: is used to support the first positioning disk in the intermediate throughholes of magnet；The shaft being plugged on the first positioning disk, shaft can be rotated relative to the first positioning disk；The probe being fixedly connected in shaft, the fixation position popped one's head in shaft is radially adjustable.In the shimming tooling, shimming tooling secure support can be positioned using the first positioning disk, the measurement of the magnetic field strength to all measurement points can be realized by adjusting the rotation of installation site and shaft of probe, it is easy to operate, and structure is simple, it is particularly possible to be suitable for small-bore magnet and measure.
Description
Technical field
The present invention relates to superconduction nmr magnet the field of test technology, in particular to a kind of shimming tooling.
Background technique
Shimming is the final realization link of nmr magnet magnetic field of high uniformity.Shimming process needs shimming software and hard
The support of part.Wherein, software is a kind of shimming optimization algorithm, and hardware has shimming tooling.Shimming process is: using shimming tooling with
And its interior probe measurement goes out the magnetic field strength of the 24x24 point on imaging region surface, which is spherical, and measurement data is inputted
Imaging region is offset by the polarizing magnetic field of patch in shimming software, the optimal patch quantity of optimization and patch spatial position
Inhomogeneities.
Current shimming tooling is usually Multi probe measuring instrument-half-moon plate type shimming tooling, is commonly available to heavy caliber
Magnet, structure is complex, and complicated for operation.
Therefore, how to provide a kind of structure it is simple, convenient for the shimming tooling of operation, be that those skilled in the art need at present
The technical issues of solution.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of shimming tooling, structure is relatively simple, easy to operate.
To achieve the above object, the invention provides the following technical scheme:
A kind of shimming tooling, comprising:
It is used to support the first positioning disk in the intermediate throughholes of magnet；
The shaft being plugged on first positioning disk, the shaft can be rotated relative to first positioning disk；
The probe being fixedly connected in the shaft, fixation position of the probe in the shaft is radially adjustable.
Preferably, first positioning disk is equipped with location hole, and all location holes are along a rotation with the shaft
Turn the virtual circle centered on center to set gradually, the shaft is fixedly connected with turntable, slideably grafting on the turntable
There is a bolt, the bolt limits the rotation angle of the shaft by grafting corresponding with each location hole.
Preferably, the probe is adjustable relative to the axial position of first positioning disk.
Preferably, link position of the shaft on the turntable is along axially adjustable.
Preferably, the shaft includes the first fixing axle and is fixed on the second solid of the axial upper side of first fixing axle
Dead axle, first fixing axle are plugged in first positioning disk, and the center line of first fixing axle is the shaft
Rotation center, the centerline parallel of second fixing axle is in the center line of first fixing axle, and shaft composition is curved
Axis is rolled over, the probe is fixed in second fixing axle and fixed position is radially adjustable.
It preferably, further include probe fixed link, the probe is fixed in the probe fixed link, the probe fixed link
It is plugged and fixed radially adjustable in second fixing axle and fixed position.
Preferably, second fixing axle is equipped with locking screw pit, the locking screw pit and second fixing axle
The jack for fixed link of popping one's head in described in upper grafting is connected, and it is described to compress to be threaded with lock-screw on the locking screw pit
Probe fixed link.
Preferably, the patch hole that magnetic field homogeneity is adjusted for carrying out patch is additionally provided on first positioning disk.
It preferably, further include the second positioning disk for cooperating first positioning disk to be supported, second positioning
Disk is rotationally connected with the shaft.
Preferably, first positioning disk includes the first annular plate, the second annular plate for being parallel to first annular plate
And the connecting plate being connected between first annular plate and second annular plate, it is cyclic annular that the location hole is set to described first
On plate, the patch hole is set on second annular plate.
Shimming tooling provided by the invention, comprising: be used to support the first positioning disk in the intermediate throughholes of magnet；Grafting
Shaft on the first positioning disk, shaft can be rotated relative to the first positioning disk；The probe being fixedly connected in shaft, probe
Fixation position in shaft is radially adjustable.
In the shimming tooling, shimming tooling secure support can be positioned using the first positioning disk, by adjusting probe
The measurement of the magnetic field strength to all measurement points can be realized in the rotation of installation site and shaft, easy to operate, and structure letter
It is single, it is particularly possible to be suitable for small-bore magnet and measure.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is the application drawing of shimming tooling provided by the present invention；
Fig. 2 is the structure chart of the first positioning disk in shimming tooling provided by the present invention.
In Fig. 1 and Fig. 2:
1- magnet, 2- third fixing axle, the second positioning disk of 3-, 4- probe fixed link, 5- probe, 6- patch hole, 7- bolt,
The first fixing axle of 8-, 9- turntable, the first positioning disk of 10-, the second fixing axle of 11-, 12- location hole, 13- intermediate throughholes, 14- locking
Screw.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Core of the invention is to provide a kind of shimming tooling, and structure is relatively simple, easy to operate.
In the description of the present invention, axial direction, circumferential direction, radial direction are on the basis of the rotation center of shaft, to describe, Bu Nengli
Solution is the limitation to the application.In addition, first, second, third is used for description purposes only, it is not understood to indicate or imply phase
To importance.
In a kind of specific embodiment of shimming tooling provided by the present invention, Fig. 1 and Fig. 2 are please referred to, comprising: the first positioning disk
10, shaft and probe 5.First positioning disk 10 is used to support in the intermediate throughholes 13 of magnet 1.Shaft is plugged in the first positioning disk
On 10, shaft can be rotated relative to the first positioning disk 10.Probe 5 is fixedly connected in shaft, fixation of the probe 5 in shaft
Position is radially adjustable.
Wherein, aluminium alloy, epoxy, electrician's wood or other materials can be used in the material of each component in shimming tooling.
Wherein, probe can only be arranged one.When in use, probe signal is connected to analytical equipment, passes through analytical equipment
The magnetic field strength measured to probe is analyzed.
In a kind of specific application method, probe 5 is adjusted relative to the radial position of shaft and determines probe 5 in centre
After axial position in through-hole 13, shimming tooling is put into intermediate throughholes 13, the first positioning disk 10 is supported in intermediate throughholes,
Shimming tooling can be positioned, the first positioning disk 10 is in relatively-stationary state with magnet 1.Rotating shaft, probe 5 with
Shaft move synchronously, pop one's head in 5 motion profile on a virtual circle using the rotation center of shaft as the center of circle, in the void
The measurement point respectively set on quasi- circle measures.It is rotated after a week in shaft, shimming tooling is taken out from intermediate throughholes 13,
Adjustment probe 5 relative to shaft radial position and redefine the axial position of measurement, then repeatedly aforesaid operations, until should
Shimming tooling measures the magnetic field strength of the measurement point of the preset quantity on the spherical surface of imaging region.
Optionally, the quantity of measurement point can be 24x24, that is, need to measure for 24 axial positions vertically, same
On one axial position, circumferentially, shaft per revolution, 5 24 points of measurement of probe.Wherein, the radial position of adjustment probe 5
Adjustment probe 5 is referred to radially relative to the distance of the rotation center of shaft, the axial position of adjustment probe 5 refers to adjusting
Perpendicular to the plane of the rotation center of shaft locating for probe 5.
It, can be fixed to shimming tooling secure support using the first positioning disk 10 in shimming tooling provided by the present embodiment
The measurement of the magnetic field strength to all measurement points can be realized by adjusting the rotation of installation site and shaft of probe 5 in position,
It is easy to operate, and structure is simple, it is particularly possible to it is suitable for small-bore magnet 1 and measures.
On the basis of the above embodiments, as shown in Fig. 2, several location holes 12 can be equipped on the first positioning disk 10,
All location holes 12 can be set gradually along a virtual circle centered on the rotation center of shaft.Shaft is fixedly connected with
Turntable 9 is slideably plugged with bolt 7 on turntable 9, and bolt 7 limits the rotation of shaft by grafting corresponding with each location hole 12
Gyration.
In Fig. 1, shimming tooling is packed into after intermediate throughholes 13, and bolt 7 can stretch out in the outside of magnet 1, and first is fixed
Position disk 10 is fixedly installed on intermediate throughholes 13, can specifically be realized and be fixed by the frictional force between intermediate throughholes 13, turntable 9
Revolute is constituted with the first positioning disk 10, turntable 9 can be rotated.By circumferentially pushing bolt 7 shaft can be driven to rotate, when turn
It moves to after the position of first location hole 12, bolt 7 is slided relative to turntable and is inserted into location hole 12, completes one in probe 5
After secondary measurement, bolt 7 continues to drive shaft rotation after deviating from first location hole relative to turntable sliding reverse slide, is going to
It behind the position of second location hole 12, is repeatedly inserted into second location hole 12, until measuring the last one 12 institute of location hole
Determining position.
It wherein, is the position for making staff determine location hole 12 more obviously, the length in the radial direction of location hole 12
Can be larger, location hole 12 includes that a part is not blocked by turntable 9 radially.Or first positioning disk 10 edge with
Mark line can be set in the corresponding position of location hole 12, to determine the position of location hole 12.Furthermore it is located at 7 diameter of bolt on turntable 9
Hollow hole can be set in upward side, when location hole 12 exposes from hollow hole, is axially inserted into bolt 7, can be by bolt 7
It is inserted into a location hole 12.
Wherein, the quantity of location hole 12 can be determined with arrangement mode according to the needs of actual measurement.For example, 24
The circumferentially equidistant arrangement of location hole 12,24 azimuths rotated with locating turntable 9.
Wherein, the movement of bolt 7 can also make bolt 7 be connected to motor, cylinder by transmission component with manual actuation
Equal drivers, are driven by driver.
Wherein, bolt 7 relative to turntable 9 glide direction preferably axially.
In the present embodiment, the cooperation of bolt 7 and location hole 12 can accurately determine the position of circumferential upper measurement point, shaft
It can keep stablizing when probe 5 measures motionless and easy to operate, advantageously ensure that measurement accuracy.
Based on any of the above embodiments, the probe 5 can relative to the axial position of first positioning disk 10
It adjusts.
Specifically, link position of the shaft on turntable 9 is along axially adjustable.Need to adjust the axial position of probe 5 when test
Set, in the present embodiment, due to shaft relative to the first positioning disk 10 link position along axially adjustable, then the first positioning disk 10 exists
Position in intermediate throughholes 13 can be decided, every time only need to adjust shaft relative to the first positioning disk 10 link position i.e.
Axial position of the adjustable probe 5 in intermediate throughholes 13, convenient for operation.
On the basis of the above embodiments, as shown in Figure 1, shaft may include that the first fixing axle 8 is consolidated with being fixed on first
Second fixing axle 11 of the axial upper side of dead axle 8, referred to herein as the second fixing axle 11 it is axially extending in the first fixing axle 8 it
Outside, the second fixing axle 11 can have part-structure to keep abreast of in the axial direction with the first fixing axle 8, can also completely not include simultaneously
The part of column.First fixing axle 8 is plugged in the first positioning disk 10, and the center line of the first fixing axle 8 is the rotation center of shaft,
The centerline parallel of second fixing axle 11 is in the center line of the first fixing axle 8, and shaft constitutes bending axis, wherein second is fixed
A bending structure is formed between axis 11 and the first fixing axle 8, probe 5 is fixed in the second fixing axle 11 and fixed position edge
It is radially adjustable.
Wherein, the first fixing axle 8 can be fixedly connected on turntable 9 by lock sleeve, can be along axial shifting after unclamping lock sleeve
It is dynamic.In addition, graduation mark can be set in the first fixing axle 8, for determining the axial position of probe 5.
Wherein, the first fixing axle 8 specifically can be connect with screw, be clamped, be integrally formed or be passed through with the second fixing axle 11
Other modes connection.
In the present embodiment, probe 5 raises section radial position in the second fixing axle 11, sets bending axis for shaft, then leads to
The radial position for crossing adjustment probe 5, probe 5 can be adjusted to the extended line of the center line of the first fixing axle 8, so as to
Measure the magnetic field strength of the spherical surface of imaging region and the point of intersection of rotation centerline.
Or the adjustment for 5 axial position in intermediate throughholes 13 of probe, can by the first fixing axle 8 with
Both second fixing axles 11 in the axial direction mutually realize side by side by the adjusting of the length of part.
On the basis of the above embodiments, which can also include probe fixed link 4, and probe 5 is fixed on the spy
In head fixed link 4, probe fixed link 4 is plugged and fixed in the second fixing axle 11 and fixed position is radially adjustable.
Optionally, mounting hole is opened up in fixed link 4 of popping one's head in, for placing probe 5, there is threaded hole in mounting hole side, with tight
Determine screw and the threaded hole and is fixed probe 5 with merging.
In the present embodiment, using the fixed probe 5 of probe fixed link 4 and the second fixing axle 11, installation and position convenient for probe 5
Set adjusting.
On the basis of the above embodiments, locking screw pit, locking screw pit and can be set in the second fixing axle 11
The jack of grafting probe fixed link 4 is connected in two fixing axles 11, and lock-screw 14 is threaded on locking screw pit to press
Tight probe fixed link 4.
After unclamping lock-screw 14, probe fixed link 4 can be moved radially.Preferably, probe fixed link 4 can be carved with
Degree, for determining the radial position of probe 5.
In the present embodiment, radial force of the fixed link 4 of popping one's head in by lock-screw 14, the hole wall of be locked screw 14 and jack
It is clamped, it is fixed reliable, and the position convenient for probe fixed link 4 is adjusted.
Certainly, in other embodiments, fixed link 4 of popping one's head in and the second fixing axle 11 can also be by clamping or its other party
Formula, which is realized, fixes.
Based on any of the above embodiments, it may be provided for carrying out patch on the first positioning disk 10 to adjust magnetic
The patch hole 6 of field uniformity, provides supporting point for patch.
After the magnetic field strength for measuring all measurement points, analytical equipment can analyze measurement result.It is tied according to analysis
Fruit can select patch hole 6 and carry out patch, be specifically as follows steel disc, make even to adjust the field strength in intermediate throughholes 13
High-intensity magnetic field.After patch operation, the field strength measurement operation of each measurement point is re-started, to judge whether to be adjusted to even strong by patch
Magnetic field.
On the basis of the above embodiments, which can also include for cooperating the first positioning disk 10 to be supported
The second positioning disk 3, the second positioning disk 3 is rotationally connected with shaft, to improve the stationarity of support.
The first positioning disk 10 and the second positioning disk 3 can be set gradually in shaft along axial direction, is carried out by two positioning disks
It supports to improve the stability of support, in addition, the second positioning disk 3 can be set to one or at least two.Wherein, Fig. 1 is
Convenient for the positional relationship of each component of display, part magnet 1 is merely illustrated in the axial direction, substantially, the first positioning disk 10 and second
Positioning disk 3 is at least a part of to be located inside centre bore, two for being specifically located in the axial direction of intermediate throughholes 13
End.
Further, shaft can also include the third fixing axle 2 for being fixedly connected on the second fixing axle 11, third fixing axle
2 are rotationally connected with the second positioning disk 3, and third fixing axle 2 and the second positioning disk 3 constitute revolute, in intermediate throughholes 13, third
Fixing axle 2 rotates, and the second positioning disk 3 is fixed.The center line of third fixing axle 2 and the center line of the first fixing axle 8 preferably can be with
Conllinear setting.Fixation position of second fixing axle 11 in third fixing axle 2 is along axially adjustable.
In addition, the first fixing axle 8, the second fixing axle 11 and third fixing axle 2 can be square shaft.
Based on any of the above embodiments, the first positioning disk 10 includes the first annular plate, is parallel to the first annular plate
The second annular plate and the connecting plate that is connected between the first annular plate and the second annular plate, location hole 12 be set to the first annular plate
On, patch hole 6 is set on the second annular plate, easy to process.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
Shimming tooling provided by the present invention is described in detail above.Specific case used herein is to this hair
Bright principle and embodiment is expounded, method of the invention that the above embodiments are only used to help understand and its
Core concept.It should be pointed out that for those skilled in the art, in the premise for not departing from the principle of the invention
Under, it can be with several improvements and modifications are made to the present invention, these improvement and modification also fall into the protection of the claims in the present invention
In range.
Claims (10)
1. a kind of shimming tooling characterized by comprising
The first positioning disk (10) being used to support in the intermediate throughholes (13) of magnet (1)；
The shaft being plugged on first positioning disk (10), the shaft can turn relative to first positioning disk (10)
It is dynamic；
The probe (5) being fixedly connected in the shaft, fixation position of the probe (5) in the shaft radially may be used
It adjusts.
2. shimming tooling according to claim 1, which is characterized in that first positioning disk (10) is equipped with location hole
(12), all location holes (12) set gradually along a virtual circle centered on the rotation center of the shaft, institute
State shaft to be fixedly connected with turntable (9), be slideably plugged with bolt (7) on the turntable (9), the bolt (7) by with
Each location hole (12) corresponds to grafting to limit the rotation angle of the shaft.
3. shimming tooling according to claim 2, which is characterized in that the probe (5) is relative to first positioning disk
(10) axial position is adjustable.
4. shimming tooling according to claim 3, which is characterized in that connection position of the shaft on the turntable (9)
It sets along axially adjustable.
5. shimming tooling according to claim 4, which is characterized in that the shaft includes the first fixing axle (8) and fixes
The second fixing axle (11) in side in the first fixing axle (8) axial direction, first fixing axle (8) are plugged in described first
In positioning disk (10), the center line of first fixing axle (8) is the rotation center of the shaft, second fixing axle (11)
Centerline parallel in the center line of first fixing axle (8), and the shaft constitutes bending axis, probe (5) fixation
It is radially adjustable on second fixing axle (11) and fixed position.
6. shimming tooling according to claim 5, which is characterized in that further include probe fixed link (4), the probe (5)
It is fixed on the probe fixed link (4), the probe fixed link (4) is plugged and fixed on second fixing axle (11) and solid
Positioning is set radially adjustable.
7. shimming tooling according to claim 6, which is characterized in that second fixing axle (11) is equipped with locking screw
Hole, the locking screw pit is connected with the jack of probe fixed link (4) described in grafting on second fixing axle (11), described
Lock-screw (14) is threaded on locking screw pit to compress the probe fixed link (4).
8. shimming tooling according to any one of claims 1 to 7, which is characterized in that on first positioning disk (10) also
Equipped with the patch hole (6) for adjusting magnetic field homogeneity for carrying out patch.
9. shimming tooling according to claim 8, which is characterized in that further include for cooperating first positioning disk (10)
The second positioning disk (3) being supported, second positioning disk (3) are rotationally connected with the shaft.
10. shimming tooling according to claim 8, which is characterized in that first positioning disk (10) includes first cyclic annular
It plate, the second annular plate for being parallel to first annular plate and is connected between first annular plate and second annular plate
Connecting plate, the location hole (12) be set to first annular plate on, the patch hole (6) be set to second annular plate
On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811613560.9A CN109597008B (en) | 2018-12-27 | 2018-12-27 | Shimming tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811613560.9A CN109597008B (en) | 2018-12-27 | 2018-12-27 | Shimming tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109597008A true CN109597008A (en) | 2019-04-09 |
| CN109597008B CN109597008B (en) | 2020-12-22 |
Family
ID=65963551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811613560.9A Active CN109597008B (en) | 2018-12-27 | 2018-12-27 | Shimming tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109597008B (en) |
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| CN116430280A (en) * | 2023-06-14 | 2023-07-14 | 潍坊新力超导磁电科技有限公司 | Gradient magnetic field measuring device |
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|---|---|
| CN109597008B (en) | 2020-12-22 |
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