CN117054753A - Metal magnetic powder core test fixture - Google Patents
Metal magnetic powder core test fixture Download PDFInfo
- Publication number
- CN117054753A CN117054753A CN202311046563.XA CN202311046563A CN117054753A CN 117054753 A CN117054753 A CN 117054753A CN 202311046563 A CN202311046563 A CN 202311046563A CN 117054753 A CN117054753 A CN 117054753A
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- copper
- magnetic powder
- powder core
- metal magnetic
- workpiece
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- 239000006247 magnetic powder Substances 0.000 title claims abstract description 107
- 239000002184 metal Substances 0.000 title claims abstract description 104
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 104
- 238000012360 testing method Methods 0.000 title claims abstract description 46
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 234
- 229910052802 copper Inorganic materials 0.000 claims abstract description 157
- 239000010949 copper Substances 0.000 claims abstract description 157
- 238000004804 winding Methods 0.000 claims abstract description 13
- 238000005192 partition Methods 0.000 claims description 10
- 238000010998 test method Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 7
- 238000005259 measurement Methods 0.000 description 6
- 230000004308 accommodation Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
- G01R27/2611—Measuring inductance
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
- G01R27/2688—Measuring quality factor or dielectric loss, e.g. loss angle, or power factor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The invention belongs to the technical field of product testing, and particularly relates to a metal magnetic powder core testing tool. The second copper part in the test fixture is detachably arranged on the first copper part, the first copper part and the second copper part enclose a containing cavity for containing the metal magnetic powder core to be tested, the copper rod is coaxially arranged on the first copper part, extends out of the first copper part and passes through the containing cavity to the second copper part, and the metal magnetic powder core can be sleeved on the copper rod; when the magnetic powder core is electrified, the magnetic field generated by the closed loop formed by the first copper workpiece, the second copper workpiece and the copper rod is equivalent to the magnetic field generated by the coil wound outside the metal magnetic powder core. Therefore, the test fixture adopts the matching of the first copper workpiece, the second copper workpiece and the copper rod to replace a winding method in sorting, so that the complicated process that each metal magnetic powder core is wound when the metal magnetic powder core is sorted is avoided, the labor cost is reduced, and the production efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of product testing, and particularly relates to a metal magnetic powder core testing tool.
Background
The metal magnetic powder core is a product with a certain shape which is pressed by powder with magnetic property, wherein the annular product occupies a relatively large area. When the performance of the metal magnetic powder core is classified, the quality factor of the inductance of the metal magnetic powder core, namely the Q value of the inductance, is required to be tested, and the quality factor of the inductance, namely the ratio of the inductance resistance to the equivalent loss resistance of the product when the product works under the alternating voltage of a certain frequency, is the main parameter for measuring the inductance device. The higher the inductance Q value of the metal magnetic powder core is, the smaller the loss is, and the higher the efficiency is. The general testing method for the annular metal magnetic powder core is to wind the annular metal magnetic powder core with a certain number of turns of testing wires and then use instrument testing data.
However, the production batch of the metal magnetic powder cores is generally large, and if performance sorting is performed, each metal magnetic powder core is subjected to a winding test one by one, so that not only is the labor cost increased, but also the production efficiency of the metal magnetic powder cores can be seriously affected.
Disclosure of Invention
First, the technical problem to be solved
In view of the defects and shortcomings of the prior art, the invention provides a metal magnetic powder core testing tool, so that the technical problems of high labor cost and low production efficiency in batch annular metal magnetic powder core testing are solved.
(II) technical scheme
In order to achieve the above purpose, the main technical scheme adopted by the invention comprises the following steps:
the invention provides a metal magnetic powder core testing tool which comprises a first copper workpiece, a second copper workpiece and a copper rod; the second copper workpiece is detachably arranged on the first copper workpiece, the first copper workpiece and the second copper workpiece enclose a containing cavity for containing the metal magnetic powder core to be tested, the copper rod is coaxially arranged on the first copper workpiece, extends out of the first copper workpiece and passes through the containing cavity to the second copper workpiece, and the metal magnetic powder core can be sleeved on the copper rod; when the magnetic powder core is electrified, the magnetic field generated by the closed loop formed by the first copper workpiece, the second copper workpiece and the copper rod is equivalent to the magnetic field generated by the coil wound outside the metal magnetic powder core.
Further, the copper product comprises a base, a connecting part is arranged on the lower surface of the first copper product, and the first copper product is detachably connected with the base through the connecting part; the area of the base is larger than the area of the lower surface of the first copper part.
Further, the screw hole has been seted up at the base center, and the external screw thread has been seted up on connecting portion surface, and connecting portion and screw hole threaded connection make first copper finished piece and base detachable connection.
Further, the second copper part comprises an upper end plate and a side wall which are fixedly connected, the upper end of the first copper part is open, and the lower end of the side wall can cover the upper end of the first copper part inside; the center of the upper end plate is provided with a first through hole, and when the second copper part is arranged on the first copper part, the copper rod can penetrate through the first through hole.
The copper partition plate can be arranged at the upper end of the first copper product to divide the accommodating cavity into a first accommodating cavity formed by enclosing the first copper product and the copper partition plate and a second accommodating cavity formed by enclosing the second copper product and the copper partition plate; the center of the copper partition plate is provided with a second through hole for the copper rod to extend out from the first copper part; product protons are placed in the first accommodating cavity, the product protons comprise a magnetic ring and N turns of copper wires encircling the outer side of the magnetic ring, and the number of N is one times of the number of turns of the winding test copper wires when the metal magnetic powder core adopts a winding test method; the metal magnetic powder core is placed in the second accommodating cavity, and the metal magnetic powder core and the product protons can form mutual inductance.
Further, the proton outside of the product is wrapped with a pe film.
Further, the copper rod is sleeved with a rubber ring, and the rubber ring is located in the second accommodating cavity.
Further, the product protons are connected with electric wires, a third through hole is formed in the side wall of the first copper part, and one end of each electric wire penetrates through the corresponding third through hole to be electrically connected with the product protons; the other end of the wire is electrically connected with a measuring instrument.
Further, the diameter of the outer wall of the first copper part gradually increases from top to bottom, and the diameter of the circumference of the outer wall where the third through hole is located is larger than the inner diameter of the lower end of the side wall.
Further, one end of the electric wire, which is electrically connected with the product protons, is provided with a quick connector, and the quick connector is located on the outer side of the first copper workpiece.
(III) beneficial effects
The beneficial effects of the invention are as follows:
according to the metal magnetic powder core testing tool provided by the invention, the first copper workpiece, the second copper workpiece and the copper rod are matched to replace a winding method in sorting. And placing the metal magnetic powder core in a containing cavity enclosed by the first copper workpiece and the second copper workpiece, and sleeving the containing cavity on the copper rod. When the power is on, the magnetic field generated by the closed loop formed by the first copper workpiece, the second copper workpiece and the copper rod is equivalent to the magnetic field generated by the coil wound outside the metal magnetic powder core, so that the complicated process of winding each metal magnetic powder core when the performance of the metal magnetic powder core is classified is avoided, the labor cost is reduced, and the production efficiency is improved.
Drawings
Fig. 1 is an explosion schematic diagram of a metal magnetic powder core test fixture of embodiment 1;
fig. 2 is an explosion schematic diagram of a metal magnetic powder core testing tool at another view angle in embodiment 1;
fig. 3 is a schematic cross-sectional view of the metal magnetic powder core test fixture of embodiment 1;
fig. 4 is a schematic structural diagram of a metal magnetic powder core test fixture of embodiment 1;
fig. 5 is a schematic cross-sectional view of the metal magnetic powder core test fixture of embodiment 2;
fig. 6 is a schematic cross-sectional view of the metal magnetic powder core test fixture of embodiment 3.
[ reference numerals description ]
1: a first copper part; 11: a connection part; 12: a third through hole;
2: a second copper part; 21: an upper end plate; 211: a first through hole; 22: a sidewall;
3: a copper rod; 4: a metal magnetic powder core;
5: a receiving chamber; 51: a first accommodation chamber; 52: a second accommodation chamber;
6: a base; 61: a threaded hole;
7: a copper separator; 71: a second through hole;
8: product protons; 9: a rubber ring; 10: an electric wire.
Detailed Description
In order that the above-described aspects may be better understood, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
As shown in fig. 1-6, the invention provides a metal magnetic powder core testing tool, which comprises at least three embodiments.
Example 1:
as shown in fig. 1-4, the copper bar comprises a first copper part 1, a second copper part 2 and a copper bar 3, wherein the second copper part 2 is detachably arranged on the first copper part 1, the first copper part 1 and the second copper part 2 enclose a containing cavity 5 for containing a metal magnetic powder core 4 to be tested, the copper bar 3 is coaxially arranged on the first copper part 1 and extends out of the first copper part 1, passes through the containing cavity 5 to the second copper part 2, and the metal magnetic powder core 4 can be sleeved on the copper bar 3. When the power is on, the magnetic field generated by the closed loop formed by the first copper workpiece 1, the second copper workpiece 2 and the copper rod 3 is equivalent to the magnetic field generated by winding a test wire with a certain number of turns on the metal magnetic powder core 4 when the performance of the metal magnetic powder core 4 is classified, so that the complicated process that each metal magnetic powder core needs to be wound when the performance of the metal magnetic powder core is classified is avoided, the labor cost is reduced, and the production efficiency is improved.
In particular, as shown in fig. 1 and 3, a rubber ring 9 is sleeved on the copper rod 3, and when the inner diameter of the metal magnetic powder core 4 is smaller than the outer diameter of the rubber ring 9, the metal magnetic powder core 4 is sleeved on the copper rod 3 and falls on the rubber ring 9. When the inner diameter of the metal magnetic powder core 4 is larger than the outer diameter of the rubber ring 9, the metal magnetic powder core 4 is sleeved outside the rubber ring 9 at the same time, at the moment, as the rubber ring 9 fills the gap between the metal magnetic powder core 4 and the copper rod 3 as much as possible, the eccentricity of the metal magnetic powder core 4 is reduced, and the accuracy of the measuring effect is ensured.
In order to ensure the stability of the metal magnetic powder core testing fixture, a base 6 with the area larger than the lower surface area of the first copper workpiece 1 is further arranged below the first copper workpiece 1, and the first copper workpiece 1 is stabilized at a specified position. In addition, it is not necessary to fix the first copper part 1 by hand when separating the first copper part 1 and the second copper part 2 that are mounted together. Moreover, the consistent position of each measurement also helps to reduce measurement errors. Specifically, as shown in fig. 1-3, a connecting portion 11 is provided on the lower surface of the first copper part 1, an external thread is provided on the surface of the connecting portion 11, a threaded hole 61 is provided in the center of the base 6, and the first copper part 1 is in threaded connection with the threaded hole 61 through the connecting portion 11 so that the first copper part 1 is detachably connected with the base 6.
Specifically, the second copper part 2 includes an upper end plate 21 and a side wall 22 that are fixedly connected, the upper end of the first copper part 1 is open, the lower end of the side wall 22 can cover the upper end of the first copper part 1 inside, a first through hole 211 is formed in the center of the upper end plate 21, and when the second copper part 2 is mounted on the first copper part 1, the copper rod 3 can be arranged through the first through hole 211.
The product proton 8 comprises a magnetic ring and N turns of copper wires encircling the outer side of the magnetic ring, the number of N is 2-3 times of the number of turns of the winding test copper wires when the metal magnetic powder core 4 adopts a winding test method, so that the inductance of the product proton 8 is larger than that of the metal magnetic powder core 4, the inductance of the product proton 8 is used as a reference value of the metal magnetic powder core 4, the inductance of the metal magnetic powder core 4 and the inductance of the product proton 8 are subjected to signal conversion, and the relative value is displayed in a meter data window, so that a larger number can be displayed and is easy to read. And judging whether the performance of the metal magnetic powder core meets the requirements or not by testing the relative value of the metal magnetic powder core 4 and the product protons 8.
Specifically, as shown in fig. 1-3, the metal magnetic powder core testing fixture comprises a copper partition 7, wherein the copper partition 7 can be arranged at the upper end of a first copper workpiece 1 to divide a containing cavity 5 into a first containing cavity 51 formed by enclosing the first copper workpiece 1 and the copper partition 7 and a second containing cavity 52 formed by enclosing a second copper workpiece 2 and the copper partition 7. Meanwhile, a second through hole 71 for the copper rod 3 to extend from the first copper part 1 is formed in the center of the copper partition 7. The product protons 8 are placed in the first accommodation chamber 51 and the metallic magnetic powder core 4 is placed in the second accommodation chamber 52. At this time, the rubber ring 9 is located in the second accommodation chamber 52.
The product proton 8 is connected with an electric wire 10, a third through hole 12 is formed in the side wall of the first copper workpiece 1, one end of the electric wire 10 penetrates through the third through hole 12 to be electrically connected with the product proton 8, and the other end of the electric wire 10 is electrically connected with a measuring instrument. The end of the wire 10 electrically connected to the product protons 8 is provided with a quick connector, which is located outside the first copper part 1. Meanwhile, the pe membrane is wrapped outside the product proton 8, the electric wire 10 and the product proton 8 are fixed, and meanwhile the anti-abrasion and insulating effects are achieved, short circuit caused by electric leakage is prevented, and the use safety of equipment is guaranteed.
It should be noted that, as shown in fig. 1-4, the diameter of the outer wall of the first copper part 1 gradually increases from top to bottom, and the diameter of the circumference of the outer wall where the third through hole 12 is located is larger than the inner diameter of the lower end of the side wall 22. This allows the second copper part 2 to be mounted with the first copper part 1 so as to be snapped onto the first copper part 1 in order to prevent the second copper part 2 from being pressed against the wire 10.
Example 2:
as shown in fig. 5, the metal magnetic powder core testing device comprises a first copper workpiece 1, a second copper workpiece 2 and a copper rod 3, wherein the second copper workpiece 2 is detachably arranged on the first copper workpiece 1, the first copper workpiece 1 and the second copper workpiece 2 enclose a containing cavity 5 for containing the metal magnetic powder core 4 to be tested, the copper rod 3 is coaxially arranged on the first copper workpiece 1 and extends out of the first copper workpiece 1, penetrates through the containing cavity 5 to the second copper workpiece 2, and the metal magnetic powder core 4 can be sleeved on the copper rod 3. When the power is on, the magnetic field generated by the closed loop formed by the first copper workpiece 1, the second copper workpiece 2 and the copper rod 3 is equivalent to the magnetic field generated by winding a test wire with a certain number of turns on the metal magnetic powder core 4 when the performance of the metal magnetic powder core 4 is classified, so that the complicated process that each metal magnetic powder core needs to be wound when the performance of the metal magnetic powder core is classified is avoided, the labor cost is reduced, and the production efficiency is improved.
In particular, a rubber ring 9 is sleeved on the copper rod 3, and when the inner diameter of the metal magnetic powder core 4 is smaller than the outer diameter of the rubber ring 9, the metal magnetic powder core 4 is sleeved on the copper rod 3 and falls on the rubber ring 9. When the inner diameter of the metal magnetic powder core 4 is larger than the outer diameter of the rubber ring 9, the metal magnetic powder core 4 is sleeved outside the rubber ring 9 at the same time, at the moment, as the rubber ring 9 fills the gap between the metal magnetic powder core 4 and the copper rod 3 as much as possible, the eccentricity of the metal magnetic powder core 4 is reduced, and the accuracy of the measuring effect is ensured.
In order to ensure the stability of the metal magnetic powder core testing fixture, a base 6 with the area larger than the lower surface area of the first copper workpiece 1 is further arranged below the first copper workpiece 1, and the first copper workpiece 1 is stabilized at a specified position. In addition, it is not necessary to fix the first copper part 1 by hand when separating the first copper part 1 and the second copper part 2 that are mounted together. Moreover, the consistent position of each measurement also helps to reduce measurement errors. Specifically, the lower surface of the first copper workpiece 1 is provided with a connecting portion 11, external threads are formed on the surface of the connecting portion 11, a threaded hole 61 is formed in the center of the base 6, and the first copper workpiece 1 is in threaded connection with the threaded hole 61 through the connecting portion 11 so that the first copper workpiece 1 can be detachably connected with the base 6.
Specifically, the second copper part 2 includes an upper end plate 21 and a side wall 22 that are fixedly connected, the first copper part 1 is a circular plate, the lower end of the side wall 22 can be in contact with the whole edge of the first copper part 1, a first through hole 211 is formed in the center of the upper end plate 21, and when the second copper part 2 is mounted on the first copper part 1, the copper rod 3 can be arranged through the first through hole 211.
The second copper part 2 is connected with an electric wire 10, one end of the electric wire 10 is electrically connected with a side wall 22, and the other end of the electric wire 10 is electrically connected with a measuring instrument.
Example 3:
as shown in fig. 6, the metal magnetic powder core testing device comprises a first copper workpiece 1, a second copper workpiece 2 and a copper rod 3, wherein the second copper workpiece 2 is detachably arranged on the first copper workpiece 1, the first copper workpiece 1 and the second copper workpiece 2 enclose a containing cavity 5 for containing the metal magnetic powder core 4 to be tested, the copper rod 3 is coaxially arranged on the first copper workpiece 1 and extends out of the first copper workpiece 1, penetrates through the containing cavity 5 to the second copper workpiece 2, and the metal magnetic powder core 4 can be sleeved on the copper rod 3. When the power is on, the magnetic field generated by the closed loop formed by the first copper workpiece 1, the second copper workpiece 2 and the copper rod 3 is equivalent to the magnetic field generated by winding a test wire with a certain number of turns on the metal magnetic powder core 4 when the performance of the metal magnetic powder core 4 is classified, so that the complicated process that each metal magnetic powder core needs to be wound when the performance of the metal magnetic powder core is classified is avoided, the labor cost is reduced, and the production efficiency is improved.
In particular, a rubber ring 9 is sleeved on the copper rod 3, and when the inner diameter of the metal magnetic powder core 4 is smaller than the outer diameter of the rubber ring 9, the metal magnetic powder core 4 is sleeved on the copper rod 3 and falls on the rubber ring 9. When the inner diameter of the metal magnetic powder core 4 is larger than the outer diameter of the rubber ring 9, the metal magnetic powder core 4 is sleeved outside the rubber ring 9 at the same time, at the moment, as the rubber ring 9 fills the gap between the metal magnetic powder core 4 and the copper rod 3 as much as possible, the eccentricity of the metal magnetic powder core 4 is reduced, and the accuracy of the measuring effect is ensured.
In order to ensure the stability of the metal magnetic powder core testing fixture, a base 6 with the area larger than the lower surface area of the first copper workpiece 1 is further arranged below the first copper workpiece 1, and the first copper workpiece 1 is stabilized at a specified position. In addition, it is not necessary to fix the first copper part 1 by hand when separating the first copper part 1 and the second copper part 2 that are mounted together. Moreover, the consistent position of each measurement also helps to reduce measurement errors. Specifically, the lower surface of the first copper workpiece 1 is provided with a connecting portion 11, external threads are formed on the surface of the connecting portion 11, a threaded hole 61 is formed in the center of the base 6, and the first copper workpiece 1 is in threaded connection with the threaded hole 61 through the connecting portion 11 so that the first copper workpiece 1 can be detachably connected with the base 6.
Specifically, the second copper part 2 is a circular plate, the upper end of the first copper part 1 is open, the second copper part 2 can completely cover the upper end of the first copper part 1, the center of the second copper part 2 is provided with a first through hole 211, and when the second copper part 2 is mounted on the first copper part 1, the copper rod 3 can penetrate through the first through hole 211.
The first copper part 1 is connected with an electric wire 10, one end of the electric wire 10 is electrically connected with the side wall of the first copper part 1, and the other end of the electric wire 10 is electrically connected with a measuring instrument.
In the description of the present specification, the terms "one embodiment," "some embodiments," "examples," "particular examples," or "some examples," etc., refer to particular features, structures, materials, or characteristics described in connection with the embodiment or example as being included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that alterations, modifications, substitutions and variations may be made in the above embodiments by those skilled in the art within the scope of the invention.
Claims (10)
1. The metal magnetic powder core testing tool is characterized by comprising a first copper workpiece (1), a second copper workpiece (2) and a copper rod (3);
the second copper workpiece (2) is detachably mounted on the first copper workpiece (1), the first copper workpiece (1) and the second copper workpiece (2) enclose a containing cavity (5) for containing a metal magnetic powder core (4) to be tested, the copper rod (3) is coaxially arranged on the first copper workpiece (1) and extends out of the first copper workpiece (1) and passes through the containing cavity (5) to the second copper workpiece (2), and the metal magnetic powder core (4) can be sleeved on the copper rod (3);
when the electric power is on, the magnetic field generated by the closed loop formed by the first copper workpiece (1), the second copper workpiece (2) and the copper rod (3) is equivalent to the magnetic field generated by the coil wound outside the metal magnetic powder core (4).
2. The metal magnetic powder core testing tool according to claim 1, further comprising a base (6), wherein a connecting portion (11) is arranged on the lower surface of the first copper part (1), and the first copper part (1) is detachably connected with the base (6) through the connecting portion (11);
the area of the base (6) is larger than the area of the lower surface of the first copper part (1).
3. The metal magnetic powder core testing tool according to claim 2, wherein a threaded hole (61) is formed in the center of the base (6), external threads are formed on the surface of the connecting portion (11), and the connecting portion (11) is in threaded connection with the threaded hole (61) so that the first copper part (1) is detachably connected with the base (6).
4. A metal magnetic powder core testing fixture according to claim 1, wherein the second copper part (2) comprises an upper end plate (21) and a side wall (22) which are fixedly connected, the upper end of the first copper part (1) is open, and the lower end of the side wall (22) can cover the upper end of the first copper part (1) inside;
the center of the upper end plate (21) is provided with a first through hole (211), and when the second copper workpiece (2) is mounted on the first copper workpiece (1), the copper rod (3) can penetrate through the first through hole (211).
5. A metal magnetic powder core testing tool according to claim 4, further comprising a copper separator (7), wherein the copper separator (7) can be placed at the upper end of the first copper product (1) to divide the accommodating cavity (5) into a first accommodating cavity (51) formed by enclosing the first copper product (1) and the copper separator (7) and a second accommodating cavity (52) formed by enclosing the second copper product (2) and the copper separator (7);
a second through hole (71) for the copper rod (3) to extend out of the first copper part (1) is formed in the center of the copper partition plate (7);
product protons (8) are placed in the first accommodating cavity (51), the product protons (8) comprise magnetic rings and N turns of copper wires encircling the outer sides of the magnetic rings, and the number of N is 2-3 times of the number of turns of the winding test copper wires when the metal magnetic powder core (4) adopts a winding test method;
the metal magnetic powder core (4) is placed in the second accommodating cavity (52), and the metal magnetic powder core (4) and the product protons (8) can form mutual inductance.
6. A metal magnetic powder core testing tool according to claim 5, wherein the product protons (8) are wrapped with pe film on the outside.
7. A metal magnetic powder core testing fixture according to claim 5, characterized in that the copper rod (3) is sleeved with a rubber ring (9), and the rubber ring (9) is located in the second accommodating cavity (52).
8. The metal magnetic powder core testing tool according to claim 5, wherein the product protons (8) are connected with electric wires (10), a third through hole (12) is formed in the side wall of the first copper part (1), and one end of each electric wire (10) passes through the third through hole (12) to be electrically connected with the product protons (8);
the other end of the electric wire (10) is electrically connected with a measuring instrument.
9. A metal magnetic powder core testing fixture according to claim 8, wherein the diameter of the outer wall of the first copper part (1) gradually increases from top to bottom, and the diameter of the circumference of the outer wall where the third through hole (12) is located is larger than the inner diameter of the lower end of the side wall (22).
10. A metal magnetic powder core testing fixture according to claim 8, characterized in that one end of the wire (10) electrically connected to the product protons (8) is provided with a quick connector, which quick connector is located outside the first copper part (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311046563.XA CN117054753A (en) | 2023-08-18 | 2023-08-18 | Metal magnetic powder core test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311046563.XA CN117054753A (en) | 2023-08-18 | 2023-08-18 | Metal magnetic powder core test fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117054753A true CN117054753A (en) | 2023-11-14 |
Family
ID=88665907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311046563.XA Pending CN117054753A (en) | 2023-08-18 | 2023-08-18 | Metal magnetic powder core test fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117054753A (en) |
-
2023
- 2023-08-18 CN CN202311046563.XA patent/CN117054753A/en active Pending
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