CN219456455U - Auxiliary positioning tool for performance test of columnar magnet - Google Patents
Auxiliary positioning tool for performance test of columnar magnet Download PDFInfo
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- CN219456455U CN219456455U CN202320652882.4U CN202320652882U CN219456455U CN 219456455 U CN219456455 U CN 219456455U CN 202320652882 U CN202320652882 U CN 202320652882U CN 219456455 U CN219456455 U CN 219456455U
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- adjusting part
- positioning tool
- performance
- columnar magnet
- auxiliary positioning
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- 238000011056 performance test Methods 0.000 title abstract description 9
- 238000012360 testing method Methods 0.000 claims abstract description 43
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 229910001172 neodymium magnet Inorganic materials 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses an auxiliary positioning tool for testing the performance of a columnar magnet, which comprises a clamp, an adjusting part and a supporting part; the fixture is arranged on the upper surface of the round platform part of the pole head and consists of a first fixture and a second fixture; the first clamping piece and the second clamping piece are used for clamping the columnar magnet to be tested; the adjusting part is arranged around the circumference of the cylindrical part of the pole head and comprises a first adjusting part, a second adjusting part, a movable connecting piece and a fixing piece, wherein the first adjusting part and the second adjusting part are symmetrically arranged; the first adjusting part is connected with the second adjusting part through a movable connecting piece; the first adjusting part and the first clamping piece are positioned on one side of the central axis of the pole head; the second adjusting part and the second clamping piece are positioned on the other side of the central axis of the pole head. The positioning tool can improve the accuracy of the performance test result of the columnar magnet.
Description
Technical Field
The utility model relates to an auxiliary positioning tool for testing the performance of a columnar magnet.
Background
In the production and manufacturing process of neodymium iron boron, each product needs to be tested, and the test of the neodymium iron boron magnetic performance is an indispensable part of a plurality of key links of neodymium iron boron. The magnetic performance of the neodymium-iron-boron magnet sample can influence the qualification rate of product processing, the magnetic performance is usually tested by adopting a professional instrument, the instrument for measuring the magnetic performance of the permanent magnet material is usually composed of a measuring host, an electromagnet, a magnetic measuring sensor, a computer, measuring software and the like, a pole head is usually used as an accessory of the electromagnet and is arranged in the electromagnet, a stable direct current source is used for excitation, a uniform magnetic field with a larger area can be generated at the center position of two pole faces of the pole head, and the device is used for detecting the magnetizing and demagnetizing or magnetic performance of the permanent magnet sample, carrying out magnetic field calibration by matching with a standard tesla meter and the like.
During testing, a cylinder sample needs to be placed in the center of the pole head of the tester. In the conventional test process, a tester visually observes whether a sample is placed at the center of the pole head of the tester. The individual difference of the testers and the difference of the placement positions of each test result influence the accuracy of the test result.
Disclosure of Invention
Therefore, the utility model aims to provide an auxiliary positioning tool for testing the performance of the columnar magnet, which can accurately position the columnar magnet and effectively avoid inaccurate performance testing results of the columnar magnet caused by individual differences.
The utility model provides an auxiliary positioning tool for testing the performance of a columnar magnet, which is arranged on a pole head of a magnet performance tester, wherein the pole head comprises a round platform part and a cylindrical part which are sequentially connected from top to bottom, the bottom surface of the round platform part is overlapped with the upper surface of the cylindrical part, and the positioning tool comprises a clamp, an adjusting part and a supporting part;
the fixture is arranged on the upper surface of the round platform part of the pole head and consists of a first fixture and a second fixture; the first clamping piece and the second clamping piece are used for clamping the columnar magnet to be tested;
the adjusting part is arranged around the circumference of the cylindrical part of the pole head and comprises a first adjusting part, a second adjusting part, a movable connecting piece and a fixing piece, wherein the first adjusting part and the second adjusting part are symmetrically arranged; the first adjusting part is connected with the second adjusting part through a movable connecting piece; the first adjusting part and the first clamping piece are positioned on one side of the central axis of the pole head; the second adjusting part and the second clamping piece are positioned on the other side of the central axis of the pole head; the fixing pieces are respectively arranged on the first adjusting part and the second adjusting part;
the support part comprises a first support rod and a second support rod; one end of the first supporting rod is connected with a first clamping piece of the clamping apparatus, and the other end of the first supporting rod is connected with the first adjusting part; one end of the second supporting rod is connected with the second clamping piece of the clamping device, and the other end of the second supporting rod is connected with the second adjusting part. Therefore, the accuracy and stability of the magnetic performance test of the NdFeB column can be improved.
According to the auxiliary positioning tool for the performance test of the columnar magnet, preferably, when the first clamping piece and the second clamping piece of the clamp are enclosed together, the clamp is of a circular ring structure or a regular polygon ring structure.
In the utility model, the fixture is divided into a first fixture and a second fixture which are symmetrically arranged, and a clamping space is formed between the first fixture and the second fixture and is used for clamping the columnar magnet to be tested. When the first clamping piece and the second clamping piece of the clamp are completely enclosed, the clamp can be of a circular ring structure or a regular polygon ring structure. The regular polygon may be square or regular hexagon; preferably regular hexagons.
According to the auxiliary positioning tool for testing the performance of the columnar magnet, preferably, the first adjusting part and the second adjusting part are of semi-annular structures, and the inner outline shapes of the first adjusting part and the second adjusting part are matched with the side wall of the columnar part of the pole head.
In the present utility model, the adjustment portion is provided around the circumference of the cylindrical portion of the pole head. The first adjusting part and the second adjusting part are the same in size and shape. The inner diameter of each adjustment portion may be 200 to 300mm, preferably 220 to 280mm, more preferably 240 to 260mm. The thickness of the adjustment portion may be 1 to 5mm, preferably 1 to 3mm, more preferably 2mm.
According to the auxiliary positioning tool for the performance test of the columnar magnet, preferably, the movable connecting piece is an elastic connecting piece capable of stretching.
According to the auxiliary positioning tool for testing the performance of the columnar magnet, preferably, the first adjusting part comprises a first end part, a first arc-shaped part and a second end part which are sequentially connected; at least two fixing through holes are formed in the first arc-shaped part; the first end part is provided with a first connecting hole; the second end is provided with a second connecting hole.
According to the auxiliary positioning tool for testing the performance of the columnar magnet, preferably, the second adjusting part comprises a third end part, a second arc part and a fourth end part which are sequentially connected; at least two fixing through holes are formed in the second arc-shaped portion, and the at least two fixing through holes are symmetrically arranged with the fixing through holes in the first arc-shaped portion; a third connecting hole is formed in the third end portion; the fourth end is provided with a fourth connecting hole.
In the utility model, the end parts (the first end part, the second end part, the third end part and the fourth end part) of the adjusting part are provided with the connecting holes matched with the movable connecting pieces, and the movable connecting pieces can connect the first adjusting part with the second adjusting part and simultaneously realize the automatic closing of the first adjusting part and the second adjusting part.
In the utility model, the first arc-shaped part and the second arc-shaped part are provided with the fixing through holes matched with the fixing pieces. When the fixing piece is loosened, the first adjusting part and the second adjusting part are automatically closed. When the mounting butt utmost point head, can fix location frock on the utmost point head. The fixing piece is matched with the movable connecting piece to adjust the calibers of the first adjusting part and the second adjusting part. The supporting part can drive the first clamping piece and the second clamping piece of the clamp to move, so that the columnar magnets to be tested with different diameters are clamped. The fixing member may be a bolt.
According to the auxiliary positioning tool for testing the performance of the columnar magnet, preferably, two movable connecting pieces are arranged, one movable connecting piece penetrates through the first connecting hole and the third connecting hole, and the other movable connecting piece penetrates through the second connecting hole and the fourth connecting hole, so that the first adjusting part and the second adjusting part are connected.
According to the auxiliary positioning tool for testing the performance of the columnar magnet, preferably, one part of the fixing pieces respectively penetrate through the fixing through holes in the first arc-shaped part, the other part of the fixing pieces respectively penetrate through the fixing through holes in the second arc-shaped part, and the fixing pieces fix the fixture on the pole head in an abutting mode.
In the utility model, one end of the supporting part is connected with the clamping apparatus, and the other end of the supporting part is connected with the adjusting part and is used for driving the clamping apparatus to correspondingly move when the adjusting part moves. The support part comprises a first support rod and a second support rod, and the first support rod, the first clamping piece and the first adjusting part are positioned on one side of the central axis of the pole head; the second support rod, the second clamping piece and the second adjusting part are positioned on the other side of the central axis of the pole head. The support part can be provided with a plurality of support rods, wherein the number of the first support rods is the same as that of the second support rods, and the first support rods and the second support rods can be symmetrically arranged. The cross section of the support portion may be rectangular or square, preferably square, and the cross section of the rod may be (1 to 5 mm) x (1 to 5 mm), preferably (1 to 3 mm) x (1 to 3 mm).
According to the auxiliary positioning tool for testing the performance of the columnar magnet, preferably, the first supporting rod comprises two supporting rods with obtuse angles; the second supporting rod comprises two supporting rods with obtuse angles.
In the utility model, the first supporting rod consists of two supporting rods with an obtuse angle. One of the support rods is positioned on the upper surface of the round table part of the pole head, and the other support rod is positioned on the inclined side surface of the round table part. In the utility model, the second supporting rod consists of two supporting rods with an obtuse angle. One of the support rods is positioned on the upper surface of the round table part of the pole head, and the other support rod is positioned on the inclined side surface of the round table part.
According to the auxiliary positioning tool for testing the performance of the columnar magnet, preferably, the other end of the first supporting rod is connected with the first arc-shaped part of the first adjusting part; the other end of the second supporting rod is connected with the second arc-shaped part of the second adjusting part.
The auxiliary positioning tool for the performance test of the columnar magnet can avoid the difference of test results caused by the individual difference of testers and the difference of the placement positions of each test, can accurately position the test, and effectively avoids inaccurate test results of the performance of the columnar magnet caused by the individual difference.
Drawings
Fig. 1 is a schematic diagram of the auxiliary positioning tool for the performance test of the columnar magnet.
Fig. 2 is a schematic connection diagram of the auxiliary positioning tool and the pole head for testing the performance of the columnar magnet.
Fig. 3 is a schematic front view of the pole head used in the present utility model.
Fig. 4 is a schematic top view of the pole head used in the present utility model.
FIG. 5 is a graph showing the test results of Experimental example 1.
FIG. 6 is a graph showing the test results of comparative example 1.
FIG. 7 is a graph of the results of a standard sample test after verification by the national institute of metrology.
Reference numerals illustrate:
4-pole head; 41-a round table part; 42-a cylindrical portion; 411-oblique side;
1-a clamp; 11-a first clip; 12-a second clamping piece; 2-an adjusting part; 21-a first adjustment section; 211-a first arc-shaped portion; 2111-a first securing through hole; 2112-a second securing through hole; 212-a first end; 2121-first connecting holes; 213-a second end; 2131-a second connection hole; 22-a second adjustment part; 221-a second arcuate portion; 2211-a third fixing through hole; 2212-fourth fixing through holes; 222-a third end; 2221-third connection hole; 223-fourth end; 2231-fourth connecting holes; 23-a movable connecting piece; 24-fixing piece; 31-a first support bar; 32-a second support bar.
Detailed Description
The utility model will be described in more detail below, but is not limited thereto.
Example 1
Fig. 3 is a schematic front view of the pole head used in the present utility model. Fig. 4 is a schematic top view of the pole head used in the present utility model. As shown in fig. 3 and 4, the pole head 4 of the magnet performance tester includes a circular truncated cone portion 41 and a cylindrical portion 42 which are sequentially connected from top to bottom, and the bottom surface of the circular truncated cone portion 41 coincides with the upper surface of the cylindrical portion 42. The truncated cone portion 41 has an inclined side 411.
Fig. 1 is a schematic diagram of the auxiliary positioning tool for the performance test of the columnar magnet. Fig. 2 is a schematic connection diagram of the auxiliary positioning tool and the pole head for testing the performance of the columnar magnet. As shown in fig. 1 and 2, the auxiliary positioning tool for testing the performance of the columnar magnet of the embodiment comprises a fixture 1, an adjusting part 2 and a supporting part.
The fixture 1 may be placed on the boss 41 of the pole head 4. The fixture 1 is composed of a first fixture 11 and a second fixture 12 which are symmetrically arranged. In this embodiment, the first clamping member 11 and the second clamping member 12 are both in a semicircular structure. The first clamping piece 11 and the second clamping piece 12 are used for clamping a columnar neodymium iron boron magnet to be tested.
The adjustment portion 2 is disposed around the circumference of the cylindrical portion 42 of the pole head 4. The adjusting part 2 comprises a first adjusting part 21, a second adjusting part 22, a movable connecting piece 23 and a fixing piece 24.
The first adjusting portion 21 and the second adjusting portion 22 are symmetrically disposed. The first adjusting portion 21 and the second adjusting portion 22 are each of a semi-annular structure, and their inner contour shapes match with the side walls of the cylindrical portion 42 of the pole head 4.
The first adjusting portion 21 includes a first arc portion 211, a first end portion 212, and a second end portion 213. The first end 212 and the second end 213 are connected to both ends of the first arc portion 211, respectively. The first arc portion 211 is provided with a first fixing through hole 2111 and a second fixing through hole 2112. The first end 212 is provided with a first connection hole 2121. The second end 213 is provided with a second connection hole 2131.
The second adjustment portion 22 includes a second arcuate portion 221, a third end portion 222, and a fourth end portion 223. The third end 222 and the fourth end 223 are connected to both ends of the second arc portion 221, respectively. The second arc portion 221 is provided with a third fixing through hole 2211 and a fourth fixing through hole 2212. The third end 222 is provided with a third connection hole 2221; the fourth end 223 is provided with a fourth connection hole 2231.
The number of the movable connecting pieces 23 is two. A movable coupling member 23 passes through the first coupling hole 2121 and the third coupling hole 2221; the other movable coupling member 23 passes through the second coupling hole 2131 and the fourth coupling hole 2231. Thus, the first adjusting portion 21 and the second adjusting portion 22 are connected.
In this embodiment, the movable connecting member 23 is a flexible elastic connecting member.
The fixing members 24 are provided in four. Each fixing piece 24 passes through the first fixing through hole 2111, the second fixing through hole 2112, the third fixing through hole 2211 and the fourth fixing through hole 2212, respectively, and fixes the fixture 1 to the pole head 4 by abutting. The fixing member 24 is a bolt.
In the present embodiment, the support portion includes a first support bar 31 and a second support bar 32. The first supporting bar 31 includes two supporting bars having an obtuse angle. One of the support rods is located on the upper surface of the circular truncated cone portion 41 of the pole head 4, and the other support rod is located on the inclined side face 411 of the circular truncated cone portion 41. One end of the first supporting rod 31 is connected to the first clamping member 11 of the clamping apparatus 1, and the other end is connected to the first arc-shaped portion 211 of the first adjusting portion 21. The second support bar 32 includes two support bars having an obtuse angle. One of the support rods is positioned on the upper surface of the pole head round table part 41, and the other support rod is positioned on the inclined side 411 of the round table part. One end of the second support bar 32 is connected to the second clamping member 12 of the clamping apparatus 1, and the other end is connected to the second arc-shaped portion 221 of the second adjusting portion 22. The cross-section of these support bars may be rectangular or square. When the adjusting part 2 moves, the supporting part drives the clamp 1 to move.
Experimental example 1
After the sample is positioned by adopting the auxiliary positioning tool for testing the performance of the columnar magnet in the embodiment 1, the sample is placed into an instrument for testing, and the result is shown in fig. 5.
Comparative experiment example 1
The difference from experimental example 1 is that the existing visual observation method is adopted for direct positioning, and the test result is shown in fig. 6.
FIG. 7 is a graph of the results of a standard sample test after verification by the national institute of metrology.
The results of fig. 5 and 6 were compared with the test results of fig. 7, respectively, and the data are shown in table 1.
TABLE 1
| Project | Br/kGs | Hcj/kOe | (BH)max/MGOe |
| Experimental example 1 | 13.71 | 15.79 | 45.72 |
| Comparative experiment example 1 | 13.59 | 15.17 | 43.9 |
| Standard value | 13.71 | 15.76 | 45.21 |
Note that: the above table data is obtained through unit conversion.
From the above table, the measured data and the standard value are closer after the positioning by the auxiliary positioning tool for testing the performance of the columnar magnet in embodiment 1.
The present utility model is not limited to the above-described embodiments, and any modifications, improvements, substitutions, and the like, which may occur to those skilled in the art, fall within the scope of the present utility model without departing from the spirit of the utility model.
Claims (10)
1. The auxiliary positioning tool for testing the performance of the columnar magnet is arranged on a pole head of a magnet performance tester, the pole head comprises a round platform part and a cylindrical part which are sequentially connected from top to bottom, and the bottom surface of the round platform part is overlapped with the upper surface of the cylindrical part;
the fixture is arranged on the upper surface of the round platform part of the pole head and consists of a first fixture and a second fixture; the first clamping piece and the second clamping piece are used for clamping the columnar magnet to be tested;
the adjusting part is arranged around the circumference of the cylindrical part of the pole head and comprises a first adjusting part, a second adjusting part, a movable connecting piece and a fixing piece, wherein the first adjusting part and the second adjusting part are symmetrically arranged; the first adjusting part is connected with the second adjusting part through a movable connecting piece; the first adjusting part and the first clamping piece are positioned on one side of the central axis of the pole head; the second adjusting part and the second clamping piece are positioned on the other side of the central axis of the pole head; the fixing pieces are respectively arranged on the first adjusting part and the second adjusting part;
the support part comprises a first support rod and a second support rod; one end of the first supporting rod is connected with a first clamping piece of the clamping apparatus, and the other end of the first supporting rod is connected with the first adjusting part; one end of the second supporting rod is connected with the second clamping piece of the clamping device, and the other end of the second supporting rod is connected with the second adjusting part.
2. The auxiliary positioning tool for testing the performance of the columnar magnet according to claim 1, wherein when the first clamping piece and the second clamping piece are enclosed together, the clamping tool is of a circular ring structure or a regular polygon ring structure.
3. The auxiliary positioning tool for testing the performance of the columnar magnet according to claim 1, wherein the first adjusting part and the second adjusting part are of semi-annular structures, and the inner outline shapes of the first adjusting part and the second adjusting part are matched with the side wall of the cylindrical part of the pole head.
4. The auxiliary positioning tool for testing the performance of the columnar magnet according to claim 1, wherein the movable connecting piece is an elastic connecting piece capable of stretching.
5. The auxiliary positioning tool for testing the performance of the columnar magnet according to claim 1, wherein the first adjusting part comprises a first end part, a first arc-shaped part and a second end part which are sequentially connected; at least two fixing through holes are formed in the first arc-shaped part; the first end part is provided with a first connecting hole; the second end portion is provided with a second connecting hole.
6. The auxiliary positioning tool for testing the performance of the columnar magnet according to claim 5, wherein the second adjusting part comprises a third end part, a second arc part and a fourth end part which are sequentially connected; at least two fixing through holes are formed in the second arc-shaped portion, and the at least two fixing through holes are symmetrically arranged with the fixing through holes in the first arc-shaped portion; a third connecting hole is formed in the third end portion; and a fourth connecting hole is formed in the fourth end portion.
7. The auxiliary positioning tool for testing the performance of the columnar magnet according to claim 6, wherein two movable connecting pieces are arranged, one movable connecting piece penetrates through the first connecting hole and the third connecting hole, and the other movable connecting piece penetrates through the second connecting hole and the fourth connecting hole, so that the first adjusting part and the second adjusting part are connected.
8. The auxiliary positioning tool for testing the performance of the columnar magnet according to claim 7, wherein one part of the fixing pieces respectively penetrate through the fixing through holes in the first arc-shaped part, the other part of the fixing pieces respectively penetrate through the fixing through holes in the second arc-shaped part, and the fixing pieces fix the positioning tool on the pole head in an abutting mode.
9. The auxiliary positioning tool for testing the performance of the columnar magnet according to claim 8, wherein the first supporting rod comprises two supporting rods with an obtuse included angle; the second supporting rod comprises two supporting rods with obtuse angles.
10. The auxiliary positioning tool for testing the performance of the columnar magnet according to claim 9, wherein the other end of the first supporting rod is connected with the first arc-shaped part of the first adjusting part; the other end of the second supporting rod is connected with the second arc-shaped part of the second adjusting part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320652882.4U CN219456455U (en) | 2023-03-29 | 2023-03-29 | Auxiliary positioning tool for performance test of columnar magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320652882.4U CN219456455U (en) | 2023-03-29 | 2023-03-29 | Auxiliary positioning tool for performance test of columnar magnet |
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| Publication Number | Publication Date |
|---|---|
| CN219456455U true CN219456455U (en) | 2023-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320652882.4U Active CN219456455U (en) | 2023-03-29 | 2023-03-29 | Auxiliary positioning tool for performance test of columnar magnet |
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| Country | Link |
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| CN (1) | CN219456455U (en) |
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- 2023-03-29 CN CN202320652882.4U patent/CN219456455U/en active Active
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Denomination of utility model: Auxiliary positioning fixture for performance testing of cylindrical magnets Granted publication date: 20230801 Pledgee: Mengshang Bank Co.,Ltd. Baotou Branch Pledgor: BAOTOU TIANSHI RARE EARTH NEW MATERIAL CO.,LTD. Registration number: Y2024980008728 |