A magnetic performance test fixture for tile-shaped magnets

Abstract

The utility model discloses a kind of magnetic property test fixtures of tile-shaped magnet, including bottom base, detection coil and clamp movable rod, the upper end of bottom base is fixedly installed with detection coil, and the inside of detection coil is located the upper surface of bottom base and is equipped with clamp movable rod, the upper end of clamp movable rod is equipped with clamp, and the lower end of clamp movable rod is located the inside of bottom base and is equipped with driving motor, by being equipped with detection coil and clamp, tile-shaped magnet can rotate inside detection coil, and then the magnetic property of tile-shaped magnet is tested, and then avoid the detection device long time fast movement to cause the service life of detection device shorten, and the device can be put into multiple tile-shaped magnets when detecting tile-shaped magnet, so that multiple tile-shaped magnets simulate rotor to carry out magnetic property detection, meanwhile, clamp mounting and dismounting process of the device are more convenient, avoid too many idle clamps in detection process to affect the magnetic property detection of tile-shaped magnet.

Description

Technical Field

[0001] This utility model relates to the field of performance testing technology for tile-shaped magnets, and in particular to a magnetic performance testing fixture for tile-shaped magnets. Background Technology

[0002] The magnetic performance testing fixture for tile-shaped magnets is a device used to assist in the magnetic performance testing of tile-shaped magnets. Existing devices typically fix the tile-shaped magnet inside the fixture, and then the testing device tests the magnetic performance of the tile-shaped magnet from multiple angles. Due to the limitations of the fixture, the existing devices can only be used by personnel to hand-hold the testing device to change the angle of the tile-shaped magnet for testing, or by using a motor to move the testing device to test the tile-shaped magnet. The process of hand-holding the testing device to change the position is relatively time-consuming and labor-intensive. The testing by using a motor to move the testing device can easily loosen the internal components of the testing device due to prolonged rapid movement, which will shorten the service life of the testing device.

[0003] The present invention aims to provide a magnetic performance testing fixture for a tile-shaped magnet to solve the problems mentioned in the background art. Summary of the Invention

[0004] The purpose of this utility model is to address the shortcomings of the existing technology mentioned in the background section, and to propose a magnetic performance testing fixture for a tile-shaped magnet.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A magnetic property testing fixture for a tile-shaped magnet includes a bottom base, a detection coil, and a fixture movable rod. The detection coil is fixedly installed on the upper end of the bottom base, and the fixture movable rod is provided on the inner side of the detection coil on the upper surface of the bottom base. A clamp is provided at the upper end of the fixture movable rod, and a drive motor is provided at the lower end of the fixture movable rod on the inner side of the bottom base.

[0006] Preferably, a clamp mounting rod is fixedly connected to one side of the clamp, and a slider is fixedly connected to the inner side of the clamp mounting rod. A bead connecting rod fixedly connected to the clamp is provided at the center of the inner side of the slider, and a bead is fixedly connected to the other end of the bead connecting rod.

[0007] Preferably, the upper surface of the movable clamp rod is provided with a sliding groove, and the surface of the movable clamp rod is provided with a locking hole inside the sliding groove. A release rod is fitted and connected to the inner side of the movable clamp rod, and release beads are provided on both the left and right sides of the release rod. The upper and lower ends of the release beads are provided with limiting frames that are fixedly connected to the release rod.

[0008] Preferably, the end of the limiting frame near the release bead is arc-shaped, and the limiting frame is tightly fitted to the surface of the release bead.

[0009] Preferably, the inside of the clamp movable rod, at the bottom of the release rod, is provided with a return spring that is fixedly connected to the release rod.

[0010] Preferably, the clamp is arc-shaped as a whole, and a magnet insertion port is provided at the upper end of the clamp.

[0011] Preferably, the surface of the movable rod of the clamp has an arc-shaped groove that is connected to the sliding groove on one side of the card hole.

[0012] Preferably, the slider is arc-shaped, and a circular hole is provided at the center of the inner side of the slider, and the retaining bead and retaining bead connecting rod are located in the circular hole on the inner side of the slider.

[0013] Preferably, a return spring is provided between the slider and the locking bead, as well as between the release bead and the release rod, and the initial state of the return spring is the contracted state.

[0014] Preferably, the upper end of the clamp is provided with a cover, and the bottom of the cover is provided with a connecting strip that fits into the groove on the upper surface of the clamp.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: In this invention, by setting up a detection coil and a clamp, after the tile-shaped magnet is placed, the operator can start the drive motor through an external controller to make the drive motor drive the movable rod of the clamp to rotate, thereby making the tile-shaped magnet rotate inside the detection coil, and thus testing the magnetic properties of the tile-shaped magnet. This avoids the detection device from being moved quickly for a long time, which would shorten the service life of the detection device. 2. By setting up a fixture mounting rod and a fixture movable rod, when testing tile-shaped magnets, the operator can place a single tile-shaped magnet into the fixture for individual testing, or place multiple tile-shaped magnets to simulate a rotor for magnetic performance testing. At the same time, the installation and disassembly process of the fixture is simpler, avoiding the impact of too many unloaded fixtures on the magnetic performance testing of the tile-shaped magnets during the testing process. Attached Figure Description

[0016] Figure 1 This is a structural diagram of the magnetic performance testing fixture for the tile-shaped magnet proposed in this utility model; Figure 2 A schematic diagram showing the separate structure of the clamp movable rod and the clamp mounting rod; Figure 3 This is a cross-sectional structural diagram of the clamp mounting rod; Figure 4 for Figure 3 Enlarged structural diagram at point A in the diagram; Figure 5 This is a schematic diagram of the cross-sectional structure of the movable rod of the clamp; Figure 6 for Figure 5 A magnified structural diagram at point B in the diagram.

[0017] In the diagram: 1. Bottom base; 2. Detection coil; 3. Fixture moving rod; 4. Fixture; 5. Fixture mounting rod; 6. Slide groove; 7. Locking hole; 8. Slider; 9. Locking ball; 10. Locking ball connecting rod; 11. Release rod; 12. Release ball; 13. Limiting frame. Detailed Implementation

[0018] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0019] In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Example

[0022] Reference Figure 1-6A magnetic performance testing fixture for a tile-shaped magnet includes a bottom base 1, a detection coil 2, and a fixture movable rod 3. The detection coil 2 is fixedly installed on the upper end of the bottom base 1, and the fixture movable rod 3 is located on the upper surface of the bottom base 1 inside the detection coil 2. A clamp 4 is located at the upper end of the fixture movable rod 3, and a drive motor is located on the lower end of the fixture movable rod 3 inside the bottom base 1. The detection coil 2 is a Helmholtz coil. When the operator uses this device, the clamp 4 is arc-shaped, and a magnet insertion port is opened at the upper end of the clamp 4. A cover is provided at the upper end of the clamp 4, and a connecting strip is provided at the bottom of the cover to fit into the groove on the upper surface of the clamp 4. The operator can then place the cover... Remove the tile-shaped magnet from the upper surface of clamp 4, then insert it into the inside of clamp 4 through the magnet insertion port at the upper end of clamp 4. Then close the cover to secure the tile-shaped magnet inside clamp 4. After the tile-shaped magnet is placed, the operator can start the drive motor through the external controller to rotate the clamp moving rod 3, thereby causing the tile-shaped magnet to rotate inside the detection coil 2, and thus test the magnetic properties of the tile-shaped magnet. During this process, the Helmholtz coil generates a uniform magnetic field that adapts to the arc structure of the tile-shaped magnet, reducing the edge effect of the tile-shaped magnet.

[0023] A clamp mounting rod 5 is fixedly connected to one side of the clamp 4, and a slider 8 is fixedly connected to the inner side of the clamp mounting rod 5. A bead connecting rod 10, which is fixedly connected to the clamp 4, is located at the center of the inner side of the slider 8. A bead 9 is fixedly connected to the other end of the bead connecting rod 10. A groove 6 is opened on the upper surface of the clamp movable rod 3, and a locking hole 7 is opened on the surface of the clamp movable rod 3 inside the groove 6. A release rod 11 is fitted inside the clamp movable rod 3, and release beads 12 are provided on both the left and right sides of the release rod 11. Limiting frames 13, which are fixedly connected to the release rod 11, are provided at both the upper and lower ends of the release beads 12. A return spring is provided between the slider 8, the bead 9, and the release beads 12 and the release rod 11. The initial state of the return spring is the contracted state. Through this design, when the device is used to test the tile-shaped magnet, the operator can put a single tile-shaped magnet into the clamp 4 for individual testing, or put in multiple tile-shaped magnets to simulate a rotor. When it is necessary to reduce the number of tile-shaped magnets to be tested for magnetic properties, the operator can press the release rod 11, causing the release rod 11 to move the release bead 12 downwards, which in turn causes the release bead 12 to pop out of the locking hole 7. This causes the release bead 12 to push the locking bead 9 into the inside of the slider 8, disengaging the slider 8 from the locking hole 7. Then, the clamp 4 is rotated, causing the clamp mounting rod 5 to rotate, which in turn causes the slider 8 inside the clamp mounting rod 5 to disengage from the slide groove 6. The clamp 4 is then lifted, disengaging the clamp 4 and clamp mounting rod 5 from the clamp movable rod 3. This reduces the number of clamps on the upper surface of the bottom base 1, preventing an excessive number of unloaded clamps from affecting the magnetic properties of the tile-shaped magnets during testing. When it is necessary to add clamp 4, the operator only needs to align the slider 8 inside the clamp 4 with the locking hole 7, and then insert the clamp mounting rod 5 to the outside of the clamp movable rod 3, causing the locking bead 9 inside the slider 8 to pop out and lock into the locking hole 7, completing the installation of the clamp mounting rod 5 and the clamp movable rod 3.

[0024] It should be noted that the maximum extension of the release bead 12 is such that the top of the release bead 12 is flush with the surface of the chuck 7 near the outer side of the clamping rod 3.

[0025] The end of the limiting bracket 13 near the release bead 12 is arc-shaped, and the limiting bracket 13 fits tightly against the surface of the release bead 12. Through this design, the limiting bracket 13 can restrict the release bead 12 from the outside during the extension and retraction process, so as to prevent the overall position of the release bead 12 from shifting during the extension and retraction process, which would prevent the release bead 12 from popping out normally from the inside of the card hole 7.

[0026] The clamp movable rod 3 has a return spring fixedly connected to the release rod 11 at the bottom. With this design, after the operator releases the release rod 11, the release rod 11 will pop up and reset under the action of the return spring.

[0027] The surface of the clamping rod 3 is provided with an arc-shaped groove that is connected to the slide groove 6 on one side of the card hole 7. With this design, after the clamping rod 5 is rotated, the slider 8 inside the clamping rod 5 can move upward and disengage from the clamping rod 3 through the arc-shaped groove that is connected to the slide groove 6.

[0028] The slider 8 is arc-shaped, and a round hole is provided at the center of the inner side of the slider 8. The locking ball 9 and the locking ball connecting rod 10 are located in the round hole inside the slider 8. Through this design, the round hole inside the slider 8 can limit the locking ball 9 and prevent the overall position of the locking ball 9 from shifting up and down during the extension and retraction process.

[0029] Working principle: When the operator uses this device, the clamp 4 is arc-shaped, and a magnet insertion port is provided at the upper end of the clamp 4. The upper end of the clamp 4 is covered, and the bottom of the cover is provided with a connecting strip that fits into the groove on the upper surface of the clamp 4. The operator can remove the cover from the upper surface of the clamp 4, and then insert the tile-shaped magnet into the inside of the clamp 4 through the magnet insertion port at the upper end of the clamp 4. Then close the cover, so that the tile-shaped magnet is stuck inside the clamp 4. After the tile-shaped magnet is placed, the operator can start the drive motor through the external controller, so that the drive motor drives the clamp moving rod 3 to rotate, thereby making the tile-shaped magnet rotate inside the detection coil 2, and thus test the magnetic properties of the tile-shaped magnet. During this process, the Helmholtz coil generates a uniform magnetic field, which is adapted to the arc structure of the tile-shaped magnet and reduces the edge effect of the tile-shaped magnet.

[0030] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

[0031] In the description of this utility model, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

Claims

1. A magnetic property testing fixture for a tile-shaped magnet, comprising a bottom base (1), a detection coil (2), and a fixture movable rod (3), characterized in that, A detection coil (2) is fixedly installed on the upper end of the bottom base (1), and a clamping rod (3) is provided on the inner side of the detection coil (2) on the upper surface of the bottom base (1). A clamp (4) is provided on the upper end of the clamping rod (3), and a drive motor is provided on the lower end of the clamping rod (3) on the inner side of the bottom base (1).

2. The magnetic property testing fixture for a tile-shaped magnet according to claim 1, characterized in that, One side of the clamp (4) is fixedly connected to a clamp mounting rod (5), and the inner side of the clamp mounting rod (5) is fixedly connected to a slider (8). The inner center of the slider (8) is provided with a bead connecting rod (10) fixedly connected to the clamp (4), and the other end of the bead connecting rod (10) is fixedly connected to a bead (9).

3. The magnetic property testing fixture for a tile-shaped magnet according to claim 1, characterized in that, The upper surface of the movable rod (3) of the clamp is provided with a groove (6), and the surface of the movable rod (3) is provided with a locking hole (7) inside the groove (6). The inner side of the movable rod (3) of the clamp is fitted with a release rod (11), and both sides of the release rod (11) are provided with release beads (12). Both the upper and lower ends of the release beads (12) are provided with limit frames (13) that are fixedly connected to the release rod (11).

4. The magnetic property testing fixture for a tile-shaped magnet according to claim 3, characterized in that, The end of the limiting frame (13) near the release bead (12) is arc-shaped, and the limiting frame (13) fits tightly against the surface of the release bead (12).

5. The magnetic property testing fixture for a tile-shaped magnet according to claim 1, characterized in that, The clamp movable rod (3) is provided with a return spring at the bottom of the release rod (11) and is fixedly connected to the release rod (11).

6. The magnetic property testing fixture for a tile-shaped magnet according to claim 1, characterized in that, The clamp (4) is arc-shaped, and a magnet insertion port is provided at the upper end of the clamp (4).

7. The magnetic property testing fixture for a tile-shaped magnet according to claim 1, characterized in that, The surface of the movable rod (3) of the clamp is provided with an arc-shaped groove that is connected to the slide groove (6) on one side of the locating hole (7).

8. The magnetic property testing fixture for a tile-shaped magnet according to claim 2, characterized in that, The slider (8) is arc-shaped, and a circular hole is provided at the center of the inner side of the slider (8). The bead (9) and the bead connecting rod (10) are located in the circular hole inside the slider (8).

9. The magnetic property testing fixture for a tile-shaped magnet according to claim 2, characterized in that, The slider (8), the locking bead (9), the release bead (12), and the release rod (11) are all provided with a return spring, and the initial state of the return spring is the contracted state.

10. The magnetic property testing fixture for a tile-shaped magnet according to claim 1, characterized in that, The upper end of the clamp (4) is provided with a cover, and the bottom of the cover is provided with a connecting strip that fits into the groove on the upper surface of the clamp (4).

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