CN112782621A - Annular magnet surface magnetic measurement device - Google Patents
Annular magnet surface magnetic measurement device Download PDFInfo
- Publication number
- CN112782621A CN112782621A CN201911089529.4A CN201911089529A CN112782621A CN 112782621 A CN112782621 A CN 112782621A CN 201911089529 A CN201911089529 A CN 201911089529A CN 112782621 A CN112782621 A CN 112782621A
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- magnet
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- 238000005259 measurement Methods 0.000 title claims abstract description 23
- 239000000523 sample Substances 0.000 claims abstract description 65
- 230000005389 magnetism Effects 0.000 claims abstract description 6
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000004907 flux Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001739 density measurement Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
- G01R33/06—Measuring direction or magnitude of magnetic fields or magnetic flux using galvano-magnetic devices
- G01R33/07—Hall effect devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/12—Measuring magnetic properties of articles or specimens of solids or fluids
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Measuring Magnetic Variables (AREA)
Abstract
The invention discloses a surface magnetic measuring device of a ring magnet, comprising: the probe comprises a magnet fixing tool provided with an annular magnet, a support plate connected with the center of the magnet fixing tool in a centering way, and a support frame connected with the lower end of the support plate, wherein a probe support is suspended below the support plate through a connecting plate, and the probe support and the magnet fixing tool are arranged in parallel; the magnetic measurement device is characterized in that a key groove-shaped through hole is formed in the supporting plate, the key groove-shaped through hole and a through groove formed in the magnet fixing tool are located on the same vertical line, a locking hole used for inserting and placing a Hall probe is formed in the probe support, and the Hall probe is used for measuring the surface magnetism of the annular magnet.
Description
Technical Field
The invention belongs to the technical field of magnetic flux density measurement, and particularly relates to a surface magnetic measurement device for an annular magnet.
Background
In the use process of the annular magnet, when the stability of the magnetic field size and the magnetic performance of the magnet is checked, the surface magnetic flux density of the annular magnet generally needs to be accurately measured. The existing measurement method generally adopts a handheld Hall probe and aims at a measurement point for measurement, and because the position precision of the probe is poor when the Hall probe is held by hand, the consistency and the repeatability of a measurement result cannot be ensured, and a large error exists in multiple measurements, a simple and reliable annular magnet surface magnetic measurement device needs to be designed, so that the accurate measurement of the magnetic flux density of different position points in the air gap around the annular magnet is realized.
Disclosure of Invention
The invention aims to provide a device for measuring surface magnetism of a ring magnet, which aims to solve the problems of the background art.
In order to achieve the purpose, the specific technical scheme of the annular magnet surface magnetic measuring device is as follows:
an annular magnet surface magnetic measurement device, comprising: the probe comprises a magnet fixing tool provided with an annular magnet, a support plate connected with the center of the magnet fixing tool in a centering way, and a support frame connected with the lower end of the support plate, wherein a probe support is suspended below the support plate through a connecting plate, and the probe support and the magnet fixing tool are arranged in parallel;
the magnetic measurement device is characterized in that a key groove-shaped through hole is formed in the supporting plate, the key groove-shaped through hole and a through groove formed in the magnet fixing tool are located on the same vertical line, a locking hole used for inserting and placing a Hall probe is formed in the probe support, and the Hall probe is used for measuring the surface magnetism of the annular magnet.
Furthermore, the probe support is of a T-shaped structure, the tail of the T-shaped structure is vertically connected with the connecting plate, and the head of the T-shaped structure is provided with a locking hole.
Furthermore, one side of the locking hole in the probe support is connected with a strip-shaped groove in a through mode, threaded holes are formed in the two sides of the strip-shaped groove, and the Hall probe is locked through bolts in the threaded holes.
Furthermore, the diameter of a convex part arranged on the magnet fixing tool is the same as the inner diameter of the annular magnet, and the convex part and the annular magnet are buckled; and the magnet fixing tool is provided with a through groove K1, and the width of the K1 is larger than the diameter of the Hall probe.
Further, the width K2 of the key-groove-shaped through hole is the same as the width K1 of the through groove on the magnet fixing tool, and the central position C2 of the key-groove-shaped through hole is aligned with the central position C1 of the through groove on the magnet fixing tool.
Furthermore, four through holes are formed in the connecting plate, wherein the two through holes in the upper portion are overlapped with screw holes formed in the side face of the supporting plate, and the two through holes in the lower portion are overlapped with the two holes in the probe support.
Furthermore, the diameter phi D of the locking hole on the probe support is larger than the diameter of the Hall probe by 0.05-0.1 mm.
Further, the support frame includes: a supporting rod connected with the lower part of the supporting plate and a base connected with the lower end of the supporting rod.
Furthermore, the magnet fixing tool and the support plate are detachably connected through screws.
Furthermore, the supporting rods between the supporting plate and the base are arranged in three and parallel modes, and the end parts of the supporting rods are distributed in a triangular mode.
Compared with the prior art, the invention has the following beneficial effects:
the invention realizes the reliable and accurate measurement of the surface magnetic flux density of the annular magnet by depending on the accurate positioning of the magnet fixing tool to the annular magnet and the fixing of the probe support to the Hall probe, and compared with the traditional handheld Hall probe measurement method, the consistency and the repeatability of the measurement result are greatly improved.
Drawings
FIG. 1 is a schematic diagram of a surface magnetic measurement device for a ring magnet according to the present invention;
FIG. 2 is a top view of the magnet holder of FIG. 1;
FIG. 3 is a front view of the magnet holder of FIG. 1;
FIG. 4 is a top view of the support plate of FIG. 1;
FIG. 5 is a front view of the support pole of FIG. 1;
FIG. 6 is a front view of the connection plate of FIG. 1;
FIG. 7 is a side view of the probe mount of FIG. 1;
FIG. 8 is a top view of the probe mount of FIG. 1;
fig. 9 is a top view of the base of fig. 1.
The reference numbers in the figures illustrate: the device comprises a magnet fixing tool 1, a supporting plate 2, a supporting rod 3, a connecting plate 4, a probe support 5, a base 6, a through groove 7, a locking hole 8, a strip-shaped groove 9, a threaded hole 10, a Hall probe 11 and a gaussmeter 12.
Detailed Description
For a better understanding of the objects, structure and function of the invention, reference should be made to the drawings, FIGS. 1-9, which illustrate the invention.
As shown in fig. 1, a general assembly diagram of a ring magnet surface magnetism measuring device includes 6 parts, such as a magnet holder 1 provided with a ring magnet, a support plate 2, a support rod 3, a connecting plate 4, a probe support 5, a base 6, and the like; the supporting rod 3 is connected below the supporting plate 2, and the lower end of the supporting rod 3 is connected with the base 6. The supporting rods 3 between the supporting plate 2 and the base 6 are three and arranged in parallel, and the end parts of the supporting rods 3 are distributed in a triangular mode. Wherein, the magnet fixing tool 1 and the support plate 2 are centered and connected together through a screw; the supporting plate 2 and the base 6 are fixedly connected together through the supporting rod 3. The supporting plate 2 is provided with a key groove-shaped through hole, the key groove-shaped through hole and the through groove 7 formed in the magnet fixing tool 1 are located on the same vertical line, as shown in fig. 2 and 4, the width K2 of the key groove-shaped through hole is the same as the width K1 of the through groove 7 formed in the magnet fixing tool 1, and the central position C2 of the key groove-shaped through hole is aligned with the central position C1 of the through groove 7 formed in the magnet fixing tool 1. The probe support 5 is provided with a locking hole 8 for inserting and placing a Hall probe 11, the Hall probe 11 is connected with a gaussmeter 12, and the Hall probe 11 is used for measuring the surface magnetism of the annular magnet.
As shown in figures 1 and 3, the diameter of the convex part of the magnet fixing tool 1 is the same as the inner diameter of the annular magnet, clearance fit is adopted, and the size of the clearance is 0.03-0.06mm, so that the position accuracy of the magnet during measurement is ensured.
As shown in fig. 2 and 4, the magnet holder 1 is provided with a through slot 7 having a width K1, the support plate 2 is provided with a key-way-shaped through hole K2, the width K1 of the through slot 7 is the same as the width of the key-way-shaped hole K2, and the center C1 is aligned with the center C2. The diameter of the convex part arranged on the magnet fixing tool 1 is the same as the inner diameter of the annular magnet, and the convex part and the annular magnet are buckled; and the magnet fixing tool 1 is provided with a through groove 7 with the width K1, and the width K1 of the through groove 7 is larger than the diameter of the Hall probe 11.
As shown in fig. 4, 6 and 8, the connecting plate 4 has four through holes, two of which have the same pitch M as the screw holes on the side surface of the supporting plate 2, and two of which have the same pitch C as the two holes on the probe holder 5. Wherein, the two through holes at the upper part are provided with screw holes which are coincided with the screw holes arranged on the side surface of the supporting plate 2, and the two through holes at the lower part are coincided with the two holes on the probe support 5.
As shown in fig. 8, the probe support 5 is a T-shaped structure, the tail of the T-shaped structure is vertically connected with the connecting plate 4, the head of the T-shaped structure is provided with a locking hole 8, one side of the locking hole 8 on the probe support 5 is connected with a strip-shaped groove 9 in a through manner, two sides of the strip-shaped groove 9 are provided with threaded holes 10, and the hall probe 11 is locked by bolts in the threaded holes 10.
The probe support 5 is provided with a locking hole 8 with the diameter phi D, the distance L between the locking hole 8 and the bottom surface is determined according to the position of a measured point on the annular magnet, and if the surface magnetic flux density of the annular magnet at different positions along the radial direction needs to be measured, the size of the L can be adjusted. The diameter phi D of the locking hole 8 on the probe support 5 is 0.05-0.1mm larger than that of the Hall probe 11.
As shown in fig. 7 and 8, a strip-shaped groove 9 is formed on one side of the locking hole 8 on the probe support 5, and threaded holes 10 perpendicular to the locking hole 8 are formed on two sides of the strip-shaped groove 9.
The working principle is as follows: firstly, a magnet fixing tool 1, a support plate 2, a support rod 3 and a base 6 are connected together through screws; one end of a Hall probe 11 penetrates into a locking hole 8 of a probe support 5, the Hall probe 11 and the probe support 5 are fixed through a bolt in a threaded hole 10, the relative position of the Hall probe 11 and the probe support 5 is properly adjusted, and the top end of the Hall probe 11 is ensured not to exceed a magnet fixing tool 1; the probe support 5 is arranged on the connecting plate 4 through a bolt, and then the connecting plate 4 is fixed on the side surface of the supporting plate 2 through a screw; the magnet is placed on the magnet fixing tool 1, and the magnet is rotated to ensure that the annular magnet is installed to be flush.
It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes in the features and embodiments, or equivalent substitutions may be made therein by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (10)
1. An annular magnet surface magnetic measurement device, comprising: the probe fixing device comprises a magnet fixing tool (1) provided with an annular magnet, a supporting plate (2) connected with the center of the magnet fixing tool (1) in a centering manner, and a supporting frame connected with the lower end of the supporting plate (2), wherein a probe support (5) is suspended below the supporting plate (2) through a connecting plate (4), and the probe support (5) and the magnet fixing tool (1) are arranged in parallel;
the magnetic measurement device is characterized in that a key groove-shaped through hole is formed in the supporting plate (2), the key groove-shaped through hole and a through groove (7) formed in the magnet fixing tool (1) are located on the same vertical line, a locking hole (8) used for inserting and placing a Hall probe (11) is formed in the probe support (5), and the Hall probe (11) is used for measuring the surface magnetism of the annular magnet.
2. The annular magnet surface magnetic measurement device according to claim 1, wherein the probe support (5) is of a T-shaped structure, the tail part of the T-shaped structure is vertically connected with the connecting plate (4), and the head part of the T-shaped structure is provided with a locking hole (8).
3. The annular magnet surface magnetic measurement device according to claim 2, wherein one side of the locking hole (8) in the probe support (5) is connected with a strip-shaped groove (9) in a penetrating manner, threaded holes (10) are formed in two sides of the strip-shaped groove (9), and the Hall probe (11) is locked through bolts in the threaded holes (10).
4. The ring magnet surface magnetic measurement device according to claim 3, wherein the magnet holder (1) is provided with a convex part with the same diameter as the inner diameter of the ring magnet, and the convex part and the ring magnet are buckled; and the magnet fixing tool (1) is provided with a through groove (7) K1, and the width of the through groove (7) K1 is larger than the diameter of the Hall probe (11).
5. The annular magnet surface magnetic measurement device according to claim 4, wherein the width K2 of the key-groove-shaped through hole is the same as the width K1 of the through groove (7) on the magnet holder (1), and the center position C2 of the key-groove-shaped through hole is aligned with the center position C1 of the through groove (7) on the magnet holder (1).
6. A ring magnet surface-magnetic measuring device according to claim 2 or 4, characterized in that the connection plate (4) has four through-holes, of which the upper two have screw holes coinciding with the screw holes made in the side of the support plate (2) and the lower two have screw holes coinciding with the two holes in the probe holder (5).
7. An annular magnet surface magnetic measuring device according to claim 1, characterized in that the diameter phid of the locking hole (8) on the probe support (5) is 0.05-0.1mm larger than the diameter of the hall probe (9).
8. The ring magnet surface magnetic measurement device of claim 7, wherein the support frame comprises: a supporting rod (3) connected with the lower part of the supporting plate (2) and a base (6) connected with the lower end of the supporting rod (3).
9. The annular magnet surface magnetic measuring device of claim 8, wherein the magnet holder (1) and the support plate (2) are detachably connected by screws.
10. The ring magnet surface magnetic measuring device of claim 9, characterized in that the supporting rods (3) between the supporting plate (2) and the base (6) are arranged in three and parallel directions, and the ends of the supporting rods (3) are distributed in a triangular shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911089529.4A CN112782621A (en) | 2019-11-08 | 2019-11-08 | Annular magnet surface magnetic measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911089529.4A CN112782621A (en) | 2019-11-08 | 2019-11-08 | Annular magnet surface magnetic measurement device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112782621A true CN112782621A (en) | 2021-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911089529.4A Pending CN112782621A (en) | 2019-11-08 | 2019-11-08 | Annular magnet surface magnetic measurement device |
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| Country | Link |
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| CN (1) | CN112782621A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114814679A (en) * | 2022-05-10 | 2022-07-29 | 北京航空航天大学 | Device for detecting magnetism of soft magnetic material in real time under automatic stress application |
-
2019
- 2019-11-08 CN CN201911089529.4A patent/CN112782621A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114814679A (en) * | 2022-05-10 | 2022-07-29 | 北京航空航天大学 | Device for detecting magnetism of soft magnetic material in real time under automatic stress application |
| CN114814679B (en) * | 2022-05-10 | 2023-03-10 | 北京航空航天大学 | Device for detecting magnetism of soft magnetic material in real time under automatic stress application |
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