CN211123227U - Magnetic force detection device - Google Patents
Magnetic force detection device Download PDFInfo
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- CN211123227U CN211123227U CN201921945508.3U CN201921945508U CN211123227U CN 211123227 U CN211123227 U CN 211123227U CN 201921945508 U CN201921945508 U CN 201921945508U CN 211123227 U CN211123227 U CN 211123227U
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Abstract
The utility model provides a magnetic force detection device, which comprises a source magnet, an objective table, a gaussmeter and a positioning component, wherein the gaussmeter comprises a Hall probe and a measuring instrument, and the Hall probe is connected with the measuring instrument; the source magnet is arranged below the objective table, the Hall probe is arranged above the objective table, the Hall probe and the center position of the magnetic pole surface of the source magnet are positioned on the same vertical line, and the positioning assembly is arranged on the objective table. The device of the utility model can simply and rapidly measure the magnetic permeability of the magnetic target, and the stability of the target in the testing process is ensured and the measuring precision is improved by using the positioning component; the device has simple structure and simple and convenient operation, and is applicable to different types of magnetic targets.
Description
Technical Field
The utility model belongs to the technical field of magnetism detects, a magnetic force detection device is related to.
Background
With the rapid development of electronic information technology, the demand for magnetic materials or devices is increasing day by day, and the preparation of magnetic devices is not independent of ferromagnetic metals or alloys such as iron, cobalt, nickel and the like. As an important magnetic component, the strength of the magnetic permeability and the uniformity of the magnetic permeability greatly affect the performance of the magnetic target, and therefore, in order to evaluate the quality of the magnetic target, the magnetic performance of the magnetic target needs to be accurately measured.
The current measurement of the magnetic properties of a target material is mainly characterized by the magnetic transmission flux (PTF) and the magnetic transmission rate (% PTF) calculated by the method, which is the ratio of the magnetic source to penetrate from one surface of the target material to the other surface. At present, the method for detecting the target PTF mainly comprises: firstly, a bar magnet is contacted with one side surface of a target material, and a probe is contacted with the other side surface of the target to monitor a transmitted magnetic field; and secondly, testing the transmission magnetic field penetrating through the plane of the product by using a horseshoe magnet and a Hall probe to determine the PTF of the product. The second type is commonly used in the prior art, and the used magnetic detection device comprises a magnetic source, a sample stage, a hall probe/gaussmeter and the like, but the magnetic detection device is inconvenient in the aspects of taking and placing a target, adjusting, calibrating and the like, so that the probe is inaccurate in positioning, and the reliability of measured data is influenced.
CN 101187648A discloses an automated apparatus and method for PTF measurement of sputtering targets, including a magnetic source, a magnetic field detector and an automated stage, the automated stage is configured to move the sputtering target or the magnetic field detector, and the target material is kept rotating by installing at least two idle wheels and a driving wheel above the target stage, but the apparatus mainly improves the moving mode of the target material, but does not solve the problems of unfixed position and inconsistent detection conditions when the magnetic field detector detects. CN201600443U discloses a circular ferromagnetic target multi-circumference PTF detection device, comprising: the device comprises a U-shaped permanent magnet as a magnetic source, a sample stage which can translate and rotate, a Hall probe/gaussmeter which is fixed relative to the U-shaped permanent magnet and can vertically move, and a personal computer which controls the sample stage to rotate and stores and processes PTF data; the improved group of the device is used for measuring PTF data of the target in the full-plane range and ensuring uniformity, but the target is not fixed and the relative motion between the target and the sample table is not limited, the device is complex in structure, and the preparation difficulty and the cost are high.
In summary, the detection of the target magnetism needs to be performed quickly and accurately on the basis of simplifying the device, so that the method can be applied to magnetic targets with various shapes and compositions, and is convenient for large-scale application.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the prior art, the utility model aims to provide a magnetic force detection device, which adopts a gaussmeter, a source magnet and other equipment to simply and rapidly measure the magnetic permeability of a magnetic target material, ensures the stability of the target material in the testing process by using a positioning component and is applicable to different types of ferromagnetic target materials; the device has the advantages of simple structure, simple and convenient operation, high measurement precision and good stability.
To achieve the purpose, the utility model adopts the following technical proposal:
the utility model provides a magnetic force detection device, which comprises a source magnet, an objective table, a gaussmeter and a positioning component, wherein the gaussmeter comprises a Hall probe and a measuring instrument, and the Hall probe is connected with the measuring instrument;
the source magnet is arranged below the objective table, the Hall probe is arranged above the objective table, the Hall probe and the center position of the magnetic pole surface of the source magnet are positioned on the same vertical line, and the positioning assembly is arranged on the objective table.
In the utility model, the magnetic force detection device is used for measuring the magnetic permeability of the magnetic target material, the device has simple structure, and the arrangement of the position relationship between the Hall probe and the source magnet can ensure that the strongest magnetic induction line which is vertically passed through the probe detection surface and is emitted by the source magnet can be conveniently selected during measurement; in order to ensure the accuracy of the magnetic test of the target, tests at different positions are required, the consistency of test conditions before and after the movement of the target can be ensured by using the positioning assembly, and the target can be suitable for the measurement of different types of targets through the adjustment of the shape and the position relation.
The utility model discloses in, magnetic permeability is obtained by the magnetic field intensity change around passing through the target, also is the ratio of magnetic permeability and reference magnetic field, wherein the reference magnetic field for not placing under the condition of target on the test position, the magnetic field intensity of surveying, its size depends on hall probe and the relative height and the position of magnetic field source.
The utility model discloses in, need arrange the place that does not have outside ferromagnetic material in when the device uses, avoid external magnetic field to influence the magnetic field of source magnet in this device.
Following conduct the utility model discloses preferred technical scheme, nevertheless do not conduct the utility model provides a technical scheme's restriction, through following technical scheme, can reach and realize better the utility model discloses a technical purpose and beneficial effect.
As the utility model discloses preferred technical scheme, the device still includes the base plate, base plate and objective table parallel arrangement are located the objective table below, connect through first bracing piece.
As the utility model discloses preferred technical scheme, source magnet is detachable fixes on the base plate.
The utility model discloses in, for making the device can the bulk movement convenient to use, therefore set up the base plate, use detachable fixed subassembly with source magnet be fixed in the base plate on, according to the measuring position of top hall probe can corresponding change position.
In a preferred embodiment of the present invention, the source magnet includes a horseshoe magnet, the source magnet is vertically disposed, the magnetic pole surface is located at an upper side, and a distance between the magnetic pole surface and a lower surface of the stage is 0 to 0.5mm, such as 0, 0.1mm, 0.2mm, 0.3mm, 0.4mm, or 0.5mm, but not limited to the recited values, and other values not recited in the range of the values are also applicable.
The utility model discloses in, two magnetic poles of shape of a hoof magnet are close the objective table lower surface, perhaps contact with the objective table to guarantee the magnetic field intensity of top.
As the utility model discloses preferred technical scheme, the device still includes the probe bracket, the vertical arrangement of hall probe is on the probe bracket.
In a preferred embodiment of the present invention, the distance between the bottom of the hall probe and the upper surface of the stage is 5 to 15mm, for example, 5mm, 6mm, 8mm, 9.5mm, 10mm, 12mm, 14mm, or 15mm, but the present invention is not limited to the above-mentioned values, and other values not listed in the above-mentioned range of values are also applicable, and 9.5mm is preferred.
As the utility model discloses preferred technical scheme, set up the second bracing piece on the objective table, probe bracket fixes on the second bracing piece.
The utility model discloses in, apart from objective table and target certain distance when hall probe uses, consequently need the probe bracket with its fixed unsettled to adjust its height through setting up fixed subassemblies such as screw, with the measurement that is suitable for the target of different thickness or constitution.
As the preferred technical scheme of the utility model, the device is still including waiting to detect the thing, it includes magnetic target to detect the thing, magnetic target arranges the objective table in.
As a preferred technical solution of the present invention, the shape of the magnetic target includes a disc shape or a circular ring shape.
The utility model discloses in, for the convenience of the measurement of magnetic target, its surface is comparatively level and smooth usually, consequently also needs the objective table surface to level for magnetic field intensity is the same basically when testing the magnetic permeability of different positions. The size of the magnetic target to be measured is not critical, and the thickness of the magnetic target to be measured can be selected from a range of 2.5 to 13mm, such as 2.5mm, 3mm, 5mm, 7mm, 9mm, 11mm, or 13mm, but is not limited to the values listed, and other values not listed in the range of values are also applicable.
As the preferred technical scheme of the utility model, the positioning component matches with the shape of the magnetic target material to fix the position of the magnetic target material.
The utility model discloses in, in order to test the different positions of magnetic target, therefore need remove on the objective table, because the target generally is regular shape such as disc or ring shape, generally need maintain central point and put unchangeably this moment, use through locating component, ensure that the product edge pastes gently at the locating component edge, the shape phase-match of locating component and target promptly, make it can use central point to rotate certain angle as the axle, a test point is selected to every rotatory 30 ~ 50 degrees, until accomplishing a week's measurement, take the average value, hall probe and source magnet position need not to adjust in the test process.
Compared with the prior art, the utility model discloses following technological effect has:
(1) the device of the utility model can simply and rapidly measure the magnetic permeability of the magnetic target, and the stability of the target in the testing process is ensured and the measuring precision is improved by using the positioning component;
(2) the device of the utility model has simple structure and simple and convenient operation, and is applicable to magnetic targets of different types.
Drawings
Fig. 1 is a schematic front structural view of a magnetic force detection device provided in embodiment 1 of the present invention;
fig. 2 is a partial plan view of a magnetic force detecting device according to embodiment 1 of the present invention;
the device comprises a source magnet 1, an object stage 2, a gaussmeter 3, a Hall probe 31, a measuring instrument 32, a positioning assembly 4, a substrate 5, a probe bracket 6 and a magnetic target 7.
Detailed Description
To better explain the technical solution of the present invention, it is convenient to understand the technical solution of the present invention, and the following is further detailed description of the present invention, but the following embodiments are only simple examples of the present invention, and do not represent or limit the protection scope of the present invention, and the protection scope of the present invention is subject to the claims.
The utility model provides a magnetic force detection device, which comprises a source magnet 1, an objective table 2, a gaussmeter 3 and a positioning component 4, wherein the gaussmeter 3 comprises a Hall probe 31 and a measuring instrument 32, and the Hall probe 31 is connected with the measuring instrument 32;
the source magnet 1 is arranged below the objective table 2, the Hall probe 31 is arranged above the objective table 2, the Hall probe 31 and the center position of the magnetic pole surface of the source magnet 1 are positioned on the same vertical line, and the positioning assembly 4 is arranged on the objective table 2.
The following are typical but non-limiting examples of the present invention:
example 1:
the embodiment provides a magnetic force detection device, the front structure of which is schematically shown in fig. 1, the top view of a local area of which is shown in fig. 2, and which comprises a source magnet 1, an object stage 2, a gaussmeter 3 and a positioning component 4, wherein the gaussmeter 3 comprises a hall probe 31 and a measuring instrument 32, and the hall probe 31 is connected with the measuring instrument 32;
the source magnet 1 is arranged below the objective table 2, the Hall probe 31 is arranged above the objective table 2, the Hall probe 31 and the center position of the magnetic pole surface of the source magnet 1 are positioned on the same vertical line, and the positioning assembly 4 is arranged on the objective table 2.
The device also comprises a substrate 5, wherein the substrate 5 is arranged in parallel with the object stage 2, is positioned below the object stage 2 and is connected with the object stage through a first supporting rod; the source magnet 1 is detachably fixed on the substrate 2.
The source magnet 1 comprises a horseshoe-shaped magnet, the source magnet 1 is vertically placed, the magnetic pole surface is located on the upper side, and the distance between the magnetic pole surface and the lower surface of the objective table 2 is 0.5 mm.
The device also comprises a probe bracket 6, wherein a second supporting rod is arranged on the objective table 2, and the probe bracket 6 is fixed on the second supporting rod; the Hall probe 31 is vertically arranged on the probe bracket 6; the distance between the bottom of the Hall probe 31 and the upper surface of the object stage 2 is 9.5 mm.
The magnetic target 7 detected by the device is arranged on the objective table 2, the thickness of the magnetic target 7 is 5mm, the magnetic target 7 is circular, the contact position of the positioning component 4 and the magnetic target 7 is arc-shaped and matched with the shape of the magnetic target 7, and the position of the magnetic target 7 is fixed.
Example 2:
the embodiment provides a magnetic force detection device, which comprises a source magnet 1, an object stage 2, a gaussmeter 3 and a positioning component 4, wherein the gaussmeter 3 comprises a hall probe 31 and a measuring instrument 32, and the hall probe 31 is connected with the measuring instrument 32;
the source magnet 1 is arranged below the objective table 2, the Hall probe 31 is arranged above the objective table 2, the Hall probe 31 and the center position of the magnetic pole surface of the source magnet 1 are positioned on the same vertical line, and the positioning assembly 4 is arranged on the objective table 2.
The device also comprises a substrate 5, wherein the substrate 5 is arranged in parallel with the object stage 2, is positioned below the object stage 2 and is connected with the object stage through a first supporting rod; the source magnet 1 is detachably fixed on the substrate 2.
The source magnet 1 comprises a horseshoe-shaped magnet, the source magnet 1 is vertically placed, a magnetic pole surface is located on the upper side, and the magnetic pole surface is in contact with the lower surface of the objective table 2.
The device also comprises a probe bracket 6, wherein a second supporting rod is arranged on the objective table 2, and the probe bracket 6 is fixed on the second supporting rod; the Hall probe 31 is vertically arranged on the probe bracket 6; the distance between the bottom of the Hall probe 31 and the upper surface of the object stage 2 is 13.5 mm.
The magnetic target 7 detected by the device is arranged on the objective table 2, the thickness of the magnetic target 7 is 9mm, the magnetic target 7 is disc-shaped, the position of the positioning component 4, which is in contact with the magnetic target 7, is arc-shaped and matched with the shape of the magnetic target 7, and the position of the magnetic target 7 is fixed.
The device of the embodiment is adopted to test the magnetic permeability of the magnetic target, and the specific measurement steps comprise:
(1) after the device is assembled, debugging the gaussmeter 3, starting to operate when power is on, zeroing and calibrating the measuring instrument 32;
(2) inserting the Hall probe 31 into the probe bracket 6, rotating the probe left and right, observing the reading of the measuring instrument 32, when the wider part of the probe faces the front and back direction of the platform, the reading at the moment is the maximum value of the whole process, adjusting the fixing screw to enable the Hall probe 31 to be about to contact the objective table 2, the maximum degree is a source magnetic field, and the strength is about 460 gauss;
(3) adjusting the height of the Hall probe 31 to a testing position, wherein the maximum reading at the moment is a reference magnetic field;
(4) placing a magnetic target 7 to be tested and a positioning component 4 on an objective table 2, ensuring that the edge of the magnetic target 7 is lightly attached to the edge of the positioning component 4, finding out the position with the maximum magnetic field value, and calibrating the position as the target in the 0-degree direction;
(5) rotating the target material anticlockwise, and recording the magnetic field intensity of the position at every 45 +/-5 degrees of rotation to obtain a plurality of PTF values;
(6) calculating magnetic permeability% PTF, wherein the calculation formula is% PTF ═ (PTF/reference magnetic field) × 100%, and the maximum value, minimum value and average value of% PTF can be obtained;
(7) if the target material is large or the magnetism is not uniform, after the measurement is finished, the radial position of the Hall probe 31 relative to the target material can be adjusted, and the magnetic field intensity and the magnetic permeability on the circumference can be measured.
It can be seen from the above embodiments that the device of the present invention can simply and rapidly measure the magnetic permeability of the magnetic target, and by using the positioning assembly, the stability of the target in the testing process is ensured, and the measuring precision is improved; the device has simple structure and simple and convenient operation, and is applicable to different types of magnetic targets.
The applicant states that the present invention is described in the above embodiments, but the present invention is not limited to the above detailed device, i.e. the present invention is not meant to be implemented by relying on the above device. It should be clear to those skilled in the art that any improvement of the present invention, to the addition of the equivalent replacement and auxiliary structure of the device of the present invention, the selection of the specific mode, etc., all fall within the scope of protection and disclosure of the present invention.
Claims (11)
1. The magnetic force detection device is characterized by comprising a source magnet, an object stage, a gaussmeter and a positioning assembly, wherein the gaussmeter comprises a Hall probe and a measuring instrument, and the Hall probe is connected with the measuring instrument;
the source magnet is arranged below the objective table, the Hall probe is arranged above the objective table, the Hall probe and the center position of the magnetic pole surface of the source magnet are positioned on the same vertical line, and the positioning assembly is arranged on the objective table.
2. The magnetometric inspection device of claim 1, further comprising a base plate disposed parallel to the stage, beneath the stage, and connected by a first support rod.
3. The magnetic force detecting device of claim 2, wherein the source magnet is detachably fixed to the base plate.
4. The magnetic force detecting device according to claim 3, wherein the source magnet includes a horseshoe magnet, the source magnet is vertically disposed, the magnetic pole surface is located at an upper side, and a distance between the magnetic pole surface and a lower surface of the stage is 0-0.5 mm.
5. The magnetometric sensing device of claim 1, further comprising a probe support on which the hall probe is vertically disposed.
6. The magnetic force detecting device according to claim 5, wherein the distance between the bottom of the Hall probe and the upper surface of the stage is 5-15 mm.
7. The magnetometric detection device of claim 5, wherein a second support bar is provided on the stage, and the probe mount is fixed to the second support bar.
8. The magnetometric device of claim 1, further comprising an object to be inspected, the object to be inspected comprising a magnetic target material, the magnetic target material being disposed on the stage.
9. The magnetometric device of claim 8, wherein the magnetic target material has a shape comprising a disc or a torus.
10. The magnetic force detection apparatus according to claim 9, wherein the thickness of the magnetic target is 2.5 to 13 mm.
11. The magnetometric device of claim 9, wherein the positioning element matches the shape of the magnetic target to fix the position of the magnetic target.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921945508.3U CN211123227U (en) | 2019-11-12 | 2019-11-12 | Magnetic force detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921945508.3U CN211123227U (en) | 2019-11-12 | 2019-11-12 | Magnetic force detection device |
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| CN211123227U true CN211123227U (en) | 2020-07-28 |
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| CN201921945508.3U Active CN211123227U (en) | 2019-11-12 | 2019-11-12 | Magnetic force detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115113126A (en) * | 2022-07-13 | 2022-09-27 | 核工业西南物理研究院 | Device and method for testing and calibrating metal Hall probe |
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2019
- 2019-11-12 CN CN201921945508.3U patent/CN211123227U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115113126A (en) * | 2022-07-13 | 2022-09-27 | 核工业西南物理研究院 | Device and method for testing and calibrating metal Hall probe |
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