Magnet surface magnetic measurement device

Abstract

The invention relates to a magnet surface magnetic measurement device. The device comprises a clamp; a measurement probe; the first position adjusting part is used for driving the clamp to move; the second position adjusting part is used for driving the measuring probe to move; the angle adjuster is used for driving the measuring probe to be perpendicular to the surface magnetic direction of the position to be measured, and the first position adjusting part and the second position adjusting part have at least partially the same driving direction. The first position adjusting part and the second position adjusting part are configured to be different in adjusting precision in the same driving direction, during measurement, a to-be-measured magnet is installed on the clamp, the first position adjusting part and the second position adjusting part are adjusted, and in the same driving direction, one position adjusting part with the lower precision can be used for coarse adjustment firstly, and then one position adjusting part with the higher precision can be used for fine adjustment. Therefore, the measuring probe can accurately move to the to-be-measured position of the to-be-measured magnet, and the accuracy of measurement and the consistency of multiple times of measurement can be ensured. And the angle regulator enables the measuring device to be suitable for measuring the surface magnetism of magnets with different radians.

Description

Technical Field

[0001] The present disclosure relates to the technical field of measuring the surface magnetism of a magnet, and in particular to a device for measuring the surface magnetism of a magnet. Background Art

[0002] Magnets are widely used in various products and equipment due to their magnetic properties, and surface magnetism is an important parameter that reflects the performance of magnets. Surface magnetism is also called surface field or surface magnetic field. It refers to the magnetic induction intensity at a certain point on the surface of a magnet. The measurement position is the magnetic induction intensity value of a small area.

[0003] The existing surface magnetism measurement method is: fix the magnet on a specific tooling, manually slide the Hall probe back and forth on the surface of the magnet, and measure the maximum value of multiple points as the surface magnetism of the magnet. In this way, the uncertainty of the measurement position of the handheld Hall probe will lead to poor consistency and repeatability of the measurement data, and it cannot truly reflect the surface magnetism distribution of the magnet, and the reliability of the measurement data is poor. In addition, due to the diversity of the structure of the magnet to be measured, especially for magnets with curved surfaces, it is impossible to accurately control the measurement probe to be perpendicular to the surface magnetism direction of the position to be measured, which affects the accuracy of the measurement data. Summary of the invention

[0004] The purpose of the present disclosure is to provide a device for measuring the surface magnetism of a magnet, so as to at least partially solve the problems existing in the related art.

[0005] In order to achieve the above-mentioned purpose, the present disclosure provides a device for measuring the surface magnetism of a magnet, comprising: a fixture for mounting a magnet to be measured; a measuring probe for detecting the surface magnetism of the magnet to be measured; a first adjustment part for driving the fixture to move in a three-dimensional space; a second adjustment part for driving the measuring probe to move in a three-dimensional space; and an angle adjuster for driving the measuring probe to rotate so that the measuring probe is perpendicular to the surface magnetism direction of the position to be measured, wherein the first adjustment part and the second adjustment part have at least partially the same driving direction.

[0006] Optionally, the angle adjuster is configured to drive the measuring probe to rotate 0° to 25° in the clockwise direction and the counterclockwise direction respectively.

[0007] Optionally, an adjustment accuracy of one of the first adjustment portion and the second adjustment portion is ±0.01 mm.

[0008] Optionally, a carrying platform is included, and the first positioning portion and the second positioning portion are placed separately on the carrying platform.

[0009] Optionally, the first adjustment portion includes: a first lead screw, mounted parallel to the supporting platform and extending along a first direction; a first slide, threadedly connected to the first lead screw so as to move along the first direction when the first lead screw rotates; a second lead screw, mounted on the first slide and extending along a second direction perpendicular to the supporting platform; and a second slide, threadedly connected to the second lead screw so as to move along the second direction when the second lead screw rotates.

[0010] Optionally, the second adjustment portion includes: a third lead screw, mounted in parallel to the supporting platform and extending along a third direction; a third slide, threadedly connected to the third lead screw to move along the third direction when the third lead screw rotates; a fourth lead screw, mounted on the third slide and extending along the first direction; a fourth slide, threadedly connected to the fourth lead screw to move along the first direction when the fourth lead screw rotates; a fifth lead screw, mounted on the fourth slide and extending along the third direction; a fifth slide, threadedly connected to the fifth lead screw to move along the third direction when the fifth lead screw rotates; a sixth lead screw, mounted on the fifth slide and extending in a second direction perpendicular to the supporting platform; a sixth slide, threadedly connected to the sixth lead screw to move along the second direction when the sixth lead screw rotates, wherein any two of the first direction, the second direction and the third direction are perpendicular to each other, and the measuring probe is mounted on the sixth slide.

[0011] Optionally, it also includes an angle adjuster for driving the measuring probe to rotate, so that the measuring probe is perpendicular to the surface magnetic direction of the measured position of the magnet to be measured, wherein the angle adjuster is installed on the sixth slide, and the measuring probe is installed on the angle adjuster.

[0012] Optionally, the fixture includes a first clamping block, a second clamping block and a third positioning portion for driving the first clamping block and the second clamping block to move closer to or away from each other, and the first clamping block and the second clamping block are used to clamp the magnet to be measured from both sides.

[0013] Optionally, the third adjustment portion includes: a support plate fixed to the first adjustment portion; and a seventh lead screw mounted on the support plate, wherein the second clamping block is screwed to the seventh lead screw so as to move along the length direction of the seventh lead screw when the seventh lead screw rotates so as to approach or move away from the first clamping block, and the first clamping block is fixed to the support plate.

[0014] Optionally, a Gaussmeter connected to the measuring probe is further included to process the measurement result of the measuring probe.

[0015] Based on the above technical solution, the technical effects of the present invention are:

[0016] First, the magnetic surface magnetism test device of the present invention can configure the first adjustment part and the second adjustment part in the same driving direction to have different adjustment accuracy. When measuring the surface magnetism of the magnet to be tested, the magnet to be tested can be first installed on the fixture, and the first adjustment part and the second adjustment part can be adjusted in sequence. In the same driving direction, the one with lower accuracy can be used for coarse adjustment first, and then the one with higher accuracy can be used for fine adjustment, so that the measuring probe can be quickly and accurately moved to the test position of the magnet to be tested, thereby ensuring the accuracy of the measurement results and the consistency of multiple measurements.

[0017] Second, the magnet surface magnetism measuring device of the present invention can adjust the rotation of the measuring probe through the angle adjuster so that it is perpendicular to the surface magnetism direction of the position to be measured of the magnet to be measured, so that the measuring device can be applied to magnets to be measured with different curvature surfaces (such as steamed bun-shaped magnets, tile-shaped magnets, etc.), thereby improving the applicability of the measuring device. That is, when the surface of the magnet to be measured has a curvature, in order to measure the surface magnetism at the curvature position, the measuring probe can be driven by the angle adjuster to rotate to be perpendicular to the magnetic field at the position to be measured, so as to accurately measure the surface magnetism of the magnet to be measured at that position.

[0018] Third, in some embodiments, when the fixture includes a first clamping block, a second clamping block and a third adjustment portion, it can be applicable to magnets to be tested of different sizes.

[0019] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0021] Figure 1 is a first angle schematic diagram of a magnetic surface magnetism measuring device exemplarily shown in the present disclosure;

[0022] Figure 2 yes Figure 1 A second angle schematic diagram of the magnetic surface magnetism measuring device shown in FIG.

[0023] Figure 3 yes Figure 1 A third angle schematic diagram of the magnet surface magnetism measuring device shown in FIG.

[0024] Description of Reference Numerals

[0025] 1-carrying platform; 100-clamp; 110-first clamping block; 120-second clamping block; 130-third adjustment part; 131-support plate; 132-seventh lead screw; 200-measuring probe; 210-measuring chip; 300-first adjustment part; 310-first lead screw; 320-first slide; 330-second lead screw; 340-second slide; 400-second adjustment part; 410-third lead screw; 420-third slide; 430-fourth lead screw; 440-fourth slide; 450-fifth lead screw; 460-fifth slide; sixth lead screw-470; 480-sixth slide; 500-angle adjuster; 600-Gauss meter. DETAILED DESCRIPTION

[0026] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0027] In the present disclosure, the terms "first", "second", etc. are used to distinguish one element from another element, and do not have order and importance. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0028] Reference Figure 1-Figure 3 The present disclosure exemplarily shows a device for measuring the surface magnetism of a magnet, including a fixture 100 for mounting a magnet to be measured, a measuring probe 200 for detecting the surface magnetism of the magnet to be measured, a first adjustment part 300 for driving the fixture 100 to move in a three-dimensional space, a second adjustment part 400 for driving the measuring probe 200 to move in a three-dimensional space, and an angle adjuster 500 for driving the measuring probe 200 to rotate so that the measuring probe 200 is perpendicular to the surface magnetism direction of the measured position of the magnet to be measured. Among them, the first adjustment part 300 and the second adjustment part 400 have at least partially the same driving direction, for example, both can have the driving along the first direction, the driving along the second direction, etc. mentioned below. The magnet to be measured can be any magnet that needs to measure the surface magnetism, such as a neodymium iron boron magnet, and the present disclosure does not limit this.

[0029] The present disclosure does not limit the structure of the fixture 100, for example, it may include the first clamp block and the second clamp block mentioned below, and the magnet to be measured is fixed between the first clamp block and the second clamp block. In addition, in some other embodiments, the fixture 100 may include a plurality of elastic claws, and in a natural state, the plurality of elastic claws are close to each other under the action of elastic force, and during installation, the claws are forcibly separated and the magnet to be measured is placed between the plurality of claws, and after the external force is removed, the claws are close to each other under the action of elasticity and clamp the magnet to be measured.

[0030] In the present disclosure, the measuring probe 200 may be a Hall probe, or a magnetoresistive sensor probe, etc.

[0031] The present disclosure does not limit the specific structure of the first adjustment part 300 and the second adjustment part 400. For example, it can be a screw nut kinematic pair to be described below, or in some other embodiments, it can also be a cylinder drive, a crank slider kinematic pair, etc., as long as it can drive the measuring probe 200 and the fixture 100 to move relative to each other in three-dimensional space to achieve precise positioning. Here, "three-dimensional space" refers to any direction in space, such as movement in the horizontal direction, movement in the vertical direction, etc., which will be described in detail below.

[0032] It should be explained that the measurement probe 200 being perpendicular to the surface magnetic direction here means that the measurement chip 210 inside the measurement probe 200 is perpendicular to the surface magnetic direction. The measurement chip 210 usually works based on the Hall effect. The Hall effect refers to the phenomenon that when the current in a conductive material is subjected to a magnetic field perpendicular to the current direction, a voltage difference is generated in the direction perpendicular to the current. Specifically, the measurement chip 210 usually includes a Hall element. When the magnetic field acts on the Hall element, the voltage generated by the Hall element is proportional to the strength of the external magnetic field. By measuring the output voltage of the Hall element, the strength of the magnetic field can be determined. This measurement chip 210 usually also includes some circuits and processors for amplifying, processing and converting the output signal of the Hall element to provide accurate magnetic field measurement results. Specifically, refer to Figure 1-Figure 3 The measuring chip 210 may be located at the front end of the measuring probe 200 and extend out of the measuring probe 200 .

[0033] In the embodiment of the present disclosure, in order to ensure that the measuring probe 200 is perpendicular to the surface magnetic direction of the position to be measured, the specific operation is: first ensure that the fixture 100 and the measuring probe 200 are in a horizontal state before measurement, which can be achieved by calibration such as a level. The arc parameter of the position to be measured of the magnet to be measured can be obtained by means such as magnet product information or measurement. The magnet to be measured is placed on the horizontal fixture 100, and then the angle adjuster 500 is adaptively controlled according to the arc parameter of the position to be measured to drive the measuring probe 200 to rotate the corresponding angle. For example, according to the arc of the position to be measured, it can be known that when the angle between its surface magnetic direction and the horizontal plane is 10 degrees, it is only necessary to control the measuring probe 200 to rotate 10 degrees through the angle adjuster 500.

[0034] The present disclosure does not limit the specific structure of the angle adjuster 500. For example, in some embodiments, the angle adjuster 500 can be implemented by a worm gear structure. Specifically, the measuring probe 200 can be fixed to the worm gear through a mounting seat, etc. During adjustment, the worm gear can be rotated by rotating the worm gear, and then the measuring probe can be driven to rotate through the mounting seat, etc. Alternatively, the mounting seat can be directly constructed as a worm gear structure. Figure 3 , when the second adjustment part 400 includes the sixth slide 480 mentioned below, the upper surface of the sixth slide 480 can be constructed as a concave arc groove, and the bottom of the arc groove can be provided with a worm. The lower surface of the mounting seat can be constructed as a convex arc arch surface, and the lower surface of the arc arch surface can be formed with a worm wheel thread, and the arc arch surface can be extended into the arc groove in a shape-matched manner and the worm wheel thread is engaged with the worm, so that when the worm rotates, the mounting seat is driven to rotate along the inner wall of the arc groove to achieve angle adjustment. In addition, in some other embodiments, the angle adjuster 500 can also be implemented by a motor and a rotating shaft. Specifically, the measuring probe 200 can be fixed to the rotating shaft by a mounting seat, etc., and one end of the rotating shaft is connected to the output shaft of the motor. When adjusting, the motor is started and the rotating shaft is driven to rotate through the output shaft, thereby driving the measuring probe 200 to achieve rotational motion, wherein a gear set can be connected between the motor and the rotating shaft.

[0035] By using the above technical solution, the technical effects of the present invention are:

[0036] First, the magnetic surface magnetism measurement device of the present invention can configure the first adjustment part 300 and the second adjustment part 400 to have different adjustment accuracies in the same driving direction. When measuring the surface magnetism of the magnet to be measured, the magnet to be measured can be first installed on the fixture 100, and the first adjustment part 300 and the second adjustment part 400 can be adjusted in sequence. In the same driving direction, the one with lower accuracy can be used for coarse adjustment first, and then the one with higher accuracy can be used for fine adjustment, so that the measuring probe 200 can be quickly and accurately moved to the measurement position of the magnet to be measured, thereby ensuring the accuracy of the measurement results and the consistency of multiple measurements.

[0037] Second, the magnet surface magnetism measuring device of the present invention can adjust the rotation of the measuring probe 200 through the angle adjuster 500 so that it is perpendicular to the surface magnetism direction of the position to be measured of the magnet to be measured, so that the measuring device can be applied to magnets to be measured with different curvature surfaces (such as steamed bun-shaped magnets, tile-shaped magnets, etc.), thereby improving the applicability of the measuring device. That is, when the surface of the magnet to be measured has a curvature, in order to measure the surface magnetism at the curvature position, the measuring probe 200 can be driven by the angle adjuster 500 to rotate perpendicular to the magnetic field at the position to be measured, so as to accurately measure the surface magnetism of the magnet to be measured at that position.

[0038] Third, in some embodiments, when the fixture 100 includes the first clamping block 110 , the second clamping block 120 and the third adjustment portion 130 , it can be applicable to magnets to be tested of different sizes.

[0039] The present disclosure does not limit the adjustment direction of the angle adjuster 500. For example, in an embodiment of the present disclosure, the angle adjuster 500 can be configured to drive the measuring probe 200 to rotate 0° to 25° in the clockwise direction and counterclockwise direction respectively. Such a design can make the measuring device applicable to a wider range, that is, applicable to magnets to be measured with different surface curvatures. The adjustment range of the angle adjuster 500 can be achieved through its own structure. For example, when the angle adjuster 500 is a worm gear structure, its adjustment range can be achieved by configuring the thread coverage range of the worm gear and the worm.

[0040] Furthermore, in some other embodiments, the angle adjuster 500 may be configured to drive the measuring probe 200 to rotate 0° to 40° in the clockwise direction and the counterclockwise direction respectively.

[0041] Specifically, in Figure 3 In the illustrated embodiment, the angle adjuster 500 can drive the measuring probe 200 to rotate around an axis extending along the third direction, and the clockwise or counterclockwise rotation range thereof can be 0° to 25°, respectively.

[0042] In order to achieve accurate positioning of the measuring probe 200 and the magnet to be measured, in an embodiment of the present disclosure, the adjustment accuracy of one of the first adjustment portion 300 and the second adjustment portion 400 can be ±0.01mm. In addition, in some other embodiments, the adjustment accuracy of one of the first adjustment portion 300 and the second adjustment portion 400 can be ±0.005mm, which is not limited by the present disclosure and can be adaptively designed according to actual needs. Among them, in an embodiment of the present disclosure, the adjustment accuracy of the second adjustment portion 400 can be ±0.01mm. In addition, in some other embodiments, the adjustment accuracy of the first adjustment portion 300 can be ±0.01mm.

[0043] The adjustment accuracy here means that the maximum error of the drive in one or more drive directions is between -0.01mm and 0.01mm.

[0044] The present disclosure does not limit which one has an adjustment accuracy of ±0.01 mm. For example, in some embodiments, the adjustment accuracy of a portion of the driving direction of the second adjustment unit 400 can be ±0.01 mm. In addition, in some other embodiments, the adjustment accuracy of a portion of the driving direction of the first adjustment unit 300 can be ±0.01 mm.

[0045] The present disclosure does not impose any limitation on how the positioning part achieves the positioning accuracy. For example, when it is a lead screw thread drive mode mentioned below, it can be achieved by improving the accuracy of the lead screw and the nut that cooperates with the lead screw. Specifically, the driving accuracy can be controlled by designing the pitch and diameter of the lead screw and the matching clearance between the lead screw and the nut.

[0046] Reference Figure 1-Figure 3 In the embodiment of the present disclosure, the magnet surface magnetism measuring device may include a carrier 1, and the first positioning part 300 and the second positioning part 400 may be placed on the carrier 1 separately. Such a design can avoid the mutual influence between the first positioning part 300 and the second positioning part 400 to affect the positioning accuracy between the measuring probe 200 and the fixture 100 (the magnet to be measured). And when one of the first positioning part 300 and the second positioning part 400 fails, it can be replaced and repaired only, without replacing all of the first positioning part 300 and the second positioning part 400, thereby reducing maintenance costs.

[0047] The present disclosure does not limit the specific structure of the first adjustment portion 300. Figure 1-Figure 3 In the illustrated embodiment, the first position adjustment portion 300 may include: a first lead screw 310, which is installed parallel to the support platform 1 and extends in the first direction; a first slide 320, which is threadedly connected to the first lead screw 310, so as to move in the first direction when the first lead screw 310 rotates; a second lead screw 330, which is installed on the first slide 320 and extends in the second direction perpendicular to the support platform 1; and a second slide 340, which is threadedly connected to the second lead screw 330, so as to move in the second direction when the second lead screw 330 rotates. With such a design, when it is necessary to adjust the position of the fixture 100 in the first direction and the second direction, the first lead screw 310 and the second lead screw 330 are driven to rotate respectively, and the specific driving method can be motor drive or manual drive. The first direction is located in a plane parallel to the support platform 1, and the second direction is perpendicular to the support platform 1.

[0048] It should be noted that the first lead screw 310 can be directly mounted on the support platform 1 through a bearing so that it can rotate, or it can be mounted on a mounting frame through a bearing, and the mounting frame is fixed to the support platform 1. The present disclosure does not limit this. Among them, the first slide 320 can be directly screwed to the first lead screw 310. In this case, the first slide 320 needs to have a threaded hole. In addition, in some other embodiments, the first slide 320 can be fixedly connected to a nut, and the nut thread is matched with the first lead screw 310. Among them, the first slide 320 can be limited by two slide rails respectively to limit it from rotating with the first lead screw 310. Since the driving principle of the lead screw and nut kinematic pair is well known to those skilled in the art, it will not be explained too much here, and the specific structure can be adaptively designed according to actual needs.

[0049] Since the specific structures, matching relationships, and installation methods of the second lead screw 330, the second slide 340, and the third lead screw 410, the third slide 420, the fourth lead screw 430, the fourth slide 440, the fifth lead screw 450, the fifth slide 460, the sixth lead screw 470, and the sixth slide 480 mentioned below are similar to those of the first lead screw 310 and the first slide 320, they will not be repeated below. Specifically, reference may be made to the first lead screw 310 and the first slide 320 and an adaptive design may be made.

[0050] Reference Figure 1-Figure 3 In the embodiment of the present disclosure, the second adjustment portion 400 may include: a third lead screw 410, which is installed in parallel with the supporting platform 1 and extends along the third direction; a third slide 420, which is threadedly connected to the third lead screw 410 to move along the third direction when the third lead screw 410 rotates; a fourth lead screw 430, which is installed on the third slide 420 and extends along the first direction; a fourth slide 440, which is threadedly connected to the fourth lead screw 430 to move along the first direction when the fourth lead screw 430 rotates; a fifth lead screw 450, which is installed on the fourth slide 440 and extends along the third direction; a fifth slide 460, which is threadedly connected to the fifth lead screw 450 to move along the third direction when the fifth lead screw 450 rotates; a sixth lead screw 470, which is installed on the fifth slide 460 and extends in the second direction perpendicular to the supporting platform 1; a sixth slide 480, which is threadedly connected to the sixth lead screw 470 to move along the second direction when the sixth lead screw 470 rotates. Any two of the first direction, the second direction and the third direction are perpendicular to each other, and the measuring probe 200 is installed on the sixth slide 480. With such a design, when the measuring probe 200 needs to be displaced, it can be achieved by rotating the third lead screw 410, the fourth lead screw 430, the fifth lead screw 450 and the sixth lead screw 470.

[0051] As described above, in the embodiment of the present disclosure, the magnet surface magnetism measuring device may further include an angle adjuster 500 for driving the measuring probe 200 to rotate, so as to make the measuring probe 200 perpendicular to the surface magnetism direction of the position to be measured of the magnet to be measured. The angle adjuster 500 may be mounted on the sixth slide 480, and the measuring probe 200 may be mounted on the angle adjuster 500. With such a design, the angle adjuster 500 and the measuring probe 200 may be driven to move in the first direction, the second direction, and the third direction at the same time by the second adjustment part 400, and the measuring probe 200 may be driven to rotate by the angle adjuster 500 after the displacement is in place, so the operation is convenient and quick.

[0052] The measurement probe 200 being perpendicular to the surface magnetic direction is not explained here, and the details can be found above.

[0053] Reference Figure 1-Figure 3In the embodiment of the present disclosure, the fixture 100 may include a first fixture block 110, a second fixture block 120, and a third adjustment portion 130 for driving the first fixture block 110 and the second fixture block 120 to move closer to or away from each other. The first fixture block 110 and the second fixture block 120 may be used to stop the magnet to be measured from both sides. With such a design, the distance between the first fixture block 110 and the second fixture block 120 is adjusted to accommodate magnets to be measured of different sizes, thereby improving the versatility of the measuring device, without the need to develop fixtures 100 for different magnets to be measured.

[0054] The present disclosure does not limit the specific structure of the third adjustment portion 130. Figure 1-Figure 3 In some embodiments, the third position adjustment part 130 may include: a support plate 131, fixed to the first position adjustment part 300; and a seventh lead screw 132, mounted on the support plate 131. Among them, the second block 120 can be screwed to the seventh lead screw 132, so that when the seventh lead screw 132 rotates, it moves along the length direction of the seventh lead screw 132 to approach or move away from the first block 110, and the first block 110 can be fixed to the support plate 131. With such a design, when it is necessary to adjust the spacing between the first block 110 and the second block 120, it can be achieved by driving the seventh lead screw 132 to rotate. The drive can be achieved by a motor or manually. The second block 120 can be directly screwed to the seventh lead screw 132, or it can also be achieved by a nut fixedly connected thereto. And in this case, the second block 120 needs to be limited by two slide rails to prevent it from following the rotation.

[0055] Reference Figure 1-Figure 3 In the embodiment of the present disclosure, the magnetic surface magnetism measuring device may further include a Gaussmeter 600 connected to the measuring probe 200, so as to process the measurement result of the measuring probe 200. The Gaussmeter 600 may analyze and process the measurement result of the measuring probe 200 and output the measurement result (i.e., surface magnetism data). In the embodiment of the present disclosure, the Gaussmeter 600 may be installed on the carrier 1 and electrically connected to the measuring probe 200.

[0056] In order to better understand the technical solution of the present disclosure, Figure 1-Figure 3 The working process of this embodiment is described in detail, specifically:

[0057] exist Figure 1-Figure 3In the illustrated embodiment, the adjustment of the first adjustment part 300 along the first direction and the second direction can be rough adjustment, the adjustment of the second adjustment part 400 along the third direction driven by the third lead screw 410 can be rough adjustment, and the remaining driving directions of the second adjustment part 400 can be fine adjustment. During measurement, the magnet to be measured can be first fixed between the first clamping block 110 and the second clamping block 120, and then the first lead screw 310, the second lead screw 330 and the third lead screw 410 are driven to rotate to perform rough adjustment in the first direction, the second direction and the third direction, so as to quickly align the magnet to be measured with the measuring probe 200. Then, the measuring probe 200 is finely adjusted in the first direction, the second direction and the third direction by driving the fourth lead screw 430, the fifth lead screw 450 and the sixth lead screw 470 to rotate, so that the magnet to be measured and the measuring probe 200 are accurately positioned, and the angle adjuster 500 can be selectively adjusted. The aforementioned measurement refers to the precise measurement of the surface magnetism of a certain point of the magnet to be measured. In addition, in some other examples, after precise positioning, the first lead screw 310 or the third lead screw 410 can be driven to rotate so that the measuring probe 200 moves in a certain direction relative to the magnet to be measured, so as to accurately measure multiple points in the direction in sequence.

[0058] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0059] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0060] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A device for measuring the surface magnetism of a magnet, characterized in that: include: A fixture, used for mounting the magnet to be tested; A measuring probe, used to detect the surface magnetism of the magnet to be measured; A first position adjustment part, used for driving the fixture to move in a three-dimensional space; A second position adjustment unit, used for driving the measuring probe to move in a three-dimensional space; as well as An angle adjuster is used to drive the measuring probe to rotate so that the measuring probe is perpendicular to the surface magnetic direction of the position to be measured of the magnet to be measured, Wherein, the first adjustment portion and the second adjustment portion have at least partially the same driving direction.

2. The device for measuring the surface magnetism of a magnet according to claim 1, characterized in that: The angle adjuster is configured to drive the measuring probe to rotate 0° to 25° in the clockwise direction and the counterclockwise direction respectively.

3. The device for measuring the surface magnetism of a magnet according to claim 1, characterized in that: An adjustment accuracy of one of the first adjustment portion and the second adjustment portion is ±0.01 mm.

4. The device for measuring the surface magnetism of a magnet according to claim 1, characterized in that: It comprises a carrying platform, and the first position adjusting part and the second position adjusting part are placed separately on the carrying platform.

5. The device for measuring the surface magnetism of a magnet according to claim 4, characterized in that: The first position adjustment unit comprises: A first lead screw, mounted parallel to the bearing platform and extending along a first direction; a first slide, threadedly connected to the first lead screw so as to move along the first direction when the first lead screw rotates; A second lead screw, mounted on the first slide table and extending in a second direction perpendicular to the support table; and The second slide is threadedly connected to the second lead screw so as to move along the second direction when the second lead screw rotates.

6. The device for measuring the surface magnetism of a magnet according to claim 4, characterized in that: The second position adjustment unit comprises: A third lead screw is installed parallel to the bearing platform and extends along a third direction; a third slide, threadedly connected to the third lead screw so as to move along the third direction when the third lead screw rotates; a fourth lead screw, mounted on the third slide and extending along the first direction; a fourth slide, threadedly connected to the fourth lead screw, so as to move along the first direction when the fourth lead screw rotates; a fifth lead screw, mounted on the fourth slide and extending along the third direction; a fifth slide, threadedly connected to the fifth lead screw, so as to move along the third direction when the fifth lead screw rotates; a sixth lead screw, mounted on the fifth slide and extending along a second direction perpendicular to the bearing platform; a sixth slide, threadedly connected to the sixth lead screw, so as to move along the second direction when the sixth lead screw rotates, Any two of the first direction, the second direction and the third direction are perpendicular to each other, and the measuring probe is installed on the sixth slide.

7. The device for measuring the surface magnetism of a magnet according to claim 6, characterized in that: It also includes an angle adjuster for driving the measuring probe to rotate, so that the measuring probe is perpendicular to the surface magnetic direction of the position to be measured of the magnet to be measured. Wherein, the angle adjuster is installed on the sixth slide, and the measuring probe is installed on the angle adjuster.

8. The device for measuring the surface magnetism of a magnet according to claim 1, characterized in that: The fixture includes a first clamping block, a second clamping block, and a third positioning portion for driving the first clamping block and the second clamping block to move closer to or away from each other. The first clamping block and the second clamping block are used to clamp the magnet to be measured from both sides.

9. The device for measuring the surface magnetism of a magnet according to claim 8, characterized in that: The third position adjustment unit comprises: a support plate, fixed to the first adjustment portion; and a seventh lead screw, mounted on the support plate, The second clamping block is screwed to the seventh lead screw so as to move along the length direction of the seventh lead screw when the seventh lead screw rotates so as to approach or move away from the first clamping block, and the first clamping block is fixed to the support plate.

10. The device for measuring the surface magnetism of a magnet according to claim 1, characterized in that: The invention also comprises a Gauss meter connected to the measuring probe for processing the measuring result of the measuring probe.

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