A ring core processing and polishing device

Abstract

The application relates to the technical field of magnetic core processing, and particularly discloses a ring-shaped magnetic core processing and polishing device, which comprises a supporting frame and a workbench, the workbench comprises a table top and a table body connected with the table top, a first polishing mechanism, a driving mechanism and a second polishing mechanism are arranged on the table body, the driving mechanism is arranged on one side of a ring-shaped groove, and the first polishing mechanism is arranged on the other side of the ring-shaped groove. The inner and outer surfaces of the magnetic core are polished through the first polishing mechanism and the second polishing mechanism, the first polishing roller can drive the magnetic core to rotate through the friction rough surface arranged on the surface of the first polishing roller and can also polish the magnetic core by changing the rotating direction of the first polishing roller, the position of the second polishing roller is changed, the second polishing roller can adapt to magnetic cores with different thicknesses and can effectively adhere to the surface of the magnetic core, and therefore the inner and outer polishing effects of the magnetic core are improved.

Description

Technical Field

[0001] This invention relates specifically to the field of magnetic core processing technology, and more specifically to a ring-shaped magnetic core processing and polishing device. Background Technology

[0002] A magnetic core is a sintered magnetic metal oxide composed of various iron oxide mixtures. For example, manganese-zinc ferrite and nickel-zinc ferrite are typical core materials. Manganese-zinc ferrite has the characteristics of high permeability and high magnetic flux density, as well as low loss. Nickel-zinc ferrite has extremely high impedance and low permeability of less than a few hundred. Ferrite cores are used in coils and transformers of various electronic devices.

[0003] Existing magnetic cores, after being sintered and formed in the factory, have relatively rough and uneven surfaces, making them unusable directly. The surface of the magnetic core needs to be ground smooth. During the processing of toroidal magnetic cores, the outer surface of the magnetic core needs to be polished. After polishing, the magnetic core has the advantages of a regular magnetic field and a smooth outer surface. However, existing polishing equipment requires manual clamping of the magnetic core during polishing, which cannot effectively polish the inner and outer surfaces of the magnetic core. Summary of the Invention

[0004] The purpose of this invention is to provide a ring-shaped magnetic core processing and polishing device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A ring-shaped magnetic core processing and polishing device includes a support frame and a worktable. The worktable is mounted on the support frame and includes a table surface and a platform connected to the table surface. The platform has an annular groove for placing the magnetic core. The device also includes a first polishing mechanism, a driving mechanism, and a second polishing mechanism. The driving mechanism is located on one side of the annular groove, and the first polishing mechanism is located on the other side of the annular groove. The first polishing mechanism includes a first frame fixedly mounted on the table surface and a first polishing roller rotatably mounted on the first frame. The first polishing roller is rotatably mounted on the first frame via a rotating shaft. A housing that cooperates with the rotating shaft is mounted on the first frame. A swing plate is fixedly mounted on the rotating shaft. An arc-shaped cavity for the swing plate to rotate is opened inside the housing. A baffle is installed inside the arc-shaped cavity, and a connecting spring is provided between the baffle and the swing plate.

[0007] The magnetic core is provided with a second polishing mechanism on both its inner and outer sides. The second polishing mechanism includes a sliding seat slidably mounted on the table, a second polishing roller, a first cylinder, and a second cylinder. A connecting shaft is mounted on the second polishing roller. The connecting shaft is rotatably mounted on the sliding seat through a bushing. The bushing is slidably connected to the table. The first cylinder is fixedly mounted on the sliding seat, and the second cylinder is fixedly mounted on the bottom of the table. The telescopic end of the first cylinder is connected to the connecting shaft, and the telescopic end of the second cylinder is connected to the sliding seat.

[0008] As a further embodiment of the present invention: a driven gear is fixedly mounted on the rotating shaft, a drive gear is rotatably mounted on the first frame, the drive gear is a sector gear structure, and the drive gear meshes with the driven gear; a first motor for controlling the rotation of the drive gear is also mounted on the first frame.

[0009] As a further embodiment of the present invention: the driving mechanism includes a second frame slidably mounted on a table and a driving roller rotatably mounted on the second frame, and a second motor for controlling the rotation of the driving roller is mounted on the second frame; a sliding groove is provided on the table for the second frame to slide, and an elastic element connected to the second frame is provided inside the sliding groove.

[0010] As a further embodiment of the present invention: a fourth gear is fixedly installed on the connecting shaft, a control motor is fixedly installed on the sliding seat, a fifth gear is fixedly installed at the output end of the control motor, the fifth gear meshes with the fourth gear, and the thickness of the fifth gear is greater than that of the fourth gear.

[0011] As a further embodiment of the present invention: a limiting mechanism is also provided on the table surface. The limiting mechanism includes a mounting base fixedly installed on the table surface, multiple swing rods rotatably installed around the mounting base, and a lifting mechanism disposed inside the table body. The lifting mechanism includes a drive screw rotatably installed on the table body. A threaded sleeve is threadedly connected to the upper end of the drive screw. The threaded sleeve is slidably connected to the table surface, and a lifting rod is fixedly installed at the upper end of the threaded sleeve. One end of the swing rod is hinged to the lifting rod, and the other end of the swing rod extends above the annular groove. A limiting ball is rotatably installed at the other end of the swing rod. The inner side of the swing rod is connected to the mounting base through a first spring.

[0012] As a further embodiment of the present invention: a drive motor is fixedly installed inside the platform, a second gear is fixedly installed at the output end of the drive motor, and a first gear is fixedly installed on the drive screw, the first gear meshing with the second gear.

[0013] As a further embodiment of the present invention, it also includes a plurality of support mechanisms disposed in an annular groove, wherein the annular groove has a receiving groove for placing the support mechanisms, and the support mechanism includes a support component and a drive ring.

[0014] As a further embodiment of the present invention: the support assembly includes a lifting seat slidably installed in a receiving groove and a first top block fixedly installed at the bottom of the lifting seat, a connecting frame rotatably installed on the side of the lifting seat, and a support roller for guiding the magnetic core rotatably installed on the connecting frame.

[0015] As a further embodiment of the present invention: the drive ring is provided with at least one second top block that cooperates with the first top block, and both the first top block and the second top block are provided with a wedge-shaped surface on the side that is close to each other.

[0016] As a further embodiment of the present invention: the drive ring is rotatably mounted inside the platform, a gear ring is fixedly mounted on the drive ring, a rotary motor is fixedly mounted inside the platform, and a third gear is fixedly mounted on the output end of the rotary motor, the third gear meshing with the gear ring.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention polishes the inner and outer surfaces of the magnetic core by setting a first polishing mechanism and a second polishing mechanism. The first polishing mechanism includes a first frame fixedly installed on the table and a first polishing roller rotatably installed on the first frame. By changing the direction of the first polishing roller, the first polishing roller can both drive the magnetic core to rotate through the friction rough surface set on its surface and polish the magnetic core. In addition, the second polishing mechanism includes a sliding seat slidably installed on the table, a second polishing roller, a first cylinder and a second cylinder. By changing the position of the second polishing roller, the second polishing roller can both adapt to magnetic cores of different thicknesses and effectively fit the surface of the magnetic core, thereby improving the polishing effect of the inner and outer surfaces of the magnetic core. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a toroidal magnetic core processing and polishing device.

[0019] Figure 2 This is a partial cross-sectional view of a toroidal magnetic core processing and grinding device.

[0020] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle.

[0021] Figure 4 This is a top view of a toroidal magnetic core machining and polishing device.

[0022] Figure 5 This is a top view of the first grinding mechanism in the toroidal magnetic core processing and grinding device.

[0023] Figure 6 For the toroidal magnetic core processing and grinding device Figure 5 A magnified view of a section at point B.

[0024] Figure 7 This is a schematic diagram of the support components in a toroidal magnetic core processing and polishing device.

[0025] Figure 8 This is a schematic diagram of the second grinding mechanism in a ring-shaped magnetic core processing and grinding device.

[0026] In the diagram: 10-Support frame, 20-Workbench, 21-Tabletop, 22-Table body, 30-First grinding mechanism, 31-First frame, 32-First grinding roller, 33-First motor, 34-Rotating shaft, 341-Swing plate, 342-Connecting spring, 35-Housing, 351-Baffle, 36-Driven gear, 37-Drive gear, 40-Drive mechanism, 41-Second frame, 42-Drive roller, 43-Second motor, 50-Limiting mechanism, 51-Mounting base, 52-Swing rod, 53-Limiting ball, 54-Drive screw, 55-First gear. 56-Drive motor, 57-Second gear, 58-First spring, 59-Lifting rod, 60-Magnetic core, 70-Supporting mechanism, 71-Supporting assembly, 711-Lifting seat, 712-First top block, 713-Connecting frame, 714-Support roller, 715-Second spring, 72-Drive ring, 721-Gear ring, 722-Third gear, 723-Second top block, 80-Second grinding mechanism, 81-Sliding seat, 82-Second grinding roller, 83-Connecting shaft, 831-Fourth gear, 84-First cylinder, 85-Fifth gear, 86-Second cylinder. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figures 1-8 In this embodiment of the invention, a ring-shaped magnetic core processing and polishing device includes a support frame 10, a worktable 20, a first polishing mechanism 30, a driving mechanism 40, and a second polishing mechanism 80. The worktable 20 is mounted on the support frame 10 and includes a table surface 21 and a platform body 22 connected to the table surface 21. An annular groove for placing a magnetic core 60 is formed on the platform body 22. The driving mechanism 40 is disposed on one side of the annular groove, and the first polishing mechanism 30 is disposed on the other side of the annular groove. In this embodiment, as shown... Figure 1As shown, the drive mechanism 40 is located inside the annular groove and is in contact with the inner side of the magnetic core 60. It is used to drive the magnetic core 60 to rotate. The first polishing mechanism 30 is located outside the annular groove and is used to polish the surface of the magnetic core 60.

[0029] The first polishing mechanism 30 includes a first frame 31 fixedly mounted on the table 21 and a first polishing roller 32 rotatably mounted on the first frame 31. Specifically, as shown in the figure... Figure 5 and Figure 6 As shown, the first grinding roller 32 is rotatably mounted on the first frame 31 via a rotating shaft 34. A housing 35 that cooperates with the rotating shaft 34 is mounted on the first frame 31. A swing plate 341 is fixedly mounted on the rotating shaft 34. An arc-shaped cavity for the swing plate 341 to rotate is opened inside the housing 35. A baffle 351 is installed inside the arc-shaped cavity. A connecting spring 342 is provided between the baffle 351 and the swing plate 341. It can be understood that when the rotating shaft 34 is rotating, the swing plate 341 rotates inside the arc-shaped cavity, and the distance between the swing plate 341 and the baffle 351 changes, thereby deforming the connecting spring 342. After the rotating shaft 34 stops rotating, the connecting spring 342 resets to drive the rotating shaft 34 to reset.

[0030] Furthermore, in this embodiment, a driven gear 36 is fixedly mounted on the rotating shaft 34, and a drive gear 37 is rotatably mounted on the first frame 31. The drive gear 37 is a sector gear structure and meshes with the driven gear 36. A first motor 33 is also mounted on the first frame 31 to control the rotation of the drive gear 37. The first motor 33 controls the rotation of the drive gear 37. When the drive gear 37 contacts and meshes with the driven gear 36, it drives the driven gear 36 and the rotating shaft 34 to rotate. After the drive gear 37 separates from the driven gear 36, the rotating shaft 34 resets under the action of the connecting spring 342, thereby controlling the first grinding roller 32 to change its direction of rotation. It should be noted that the first grinding roller 32 has a first direction of rotation and a second direction of rotation. When the first grinding roller 32 is in the first direction of rotation state, it drives the magnetic core 60 to rotate through the friction rough surface set on its surface. When the first grinding roller 32 is in the second direction of rotation state, the first grinding roller 32 grinds the magnetic core 60.

[0031] In the embodiments of this application, such as Figure 1As shown, the drive mechanism 40 includes a second frame 41 slidably mounted on a table 21 and a drive roller 42 rotatably mounted on the second frame 41. A second motor 43 for controlling the rotation of the drive roller 42 is mounted on the second frame 41. In addition, a sliding groove is provided on the table 21 for the second frame 41 to slide. An elastic element (not shown in the figure) connected to the second frame 41 is provided inside the sliding groove. The elastic element adaptively changes the sliding position of the second frame 41, so that the drive roller 42 fits against the magnetic core 60, thereby controlling the rotation of the magnetic core 60. In this embodiment, the direction of the drive roller 42 is opposite to the first direction of the first polishing roller 32. That is, when the first direction of the first polishing roller 32 is clockwise, the direction of the drive roller 42 is counterclockwise, so that it can cooperate with the first polishing roller 32 to drive the magnetic core 60 to rotate on both sides of the magnetic core 60, so that the surface of the magnetic core 60 is polished completely.

[0032] Please see Figure 1 and Figure 8 In this embodiment, a second polishing mechanism 80 is provided on both the inner and outer sides of the magnetic core 60. The second polishing mechanism 80 includes a sliding seat 81 slidably mounted on the table 21, a second polishing roller 82, a first cylinder 84, and a second cylinder 86. A connecting shaft 83 is mounted on the second polishing roller 82. The connecting shaft 83 is rotatably mounted on the sliding seat 81 through a bushing. The bushing is slidably connected to the table 21. The first cylinder 84 is fixedly mounted on the sliding seat 81, and the second cylinder 86 is fixedly mounted on the bottom of the table 21. The telescopic end of the first cylinder 84 is connected to the connecting shaft 83, and the telescopic end of the second cylinder 86 is connected to the sliding seat 81. The first cylinder 84 is used to control the height of the second polishing roller 82 so that the second polishing roller 82 can adapt to magnetic cores 60 of different thicknesses. The second cylinder 86 is used to control the position of the second polishing roller 82 so that the second polishing roller 82 fits the surface of the magnetic core 60.

[0033] Furthermore, in this embodiment, a fourth gear 831 is fixedly installed on the connecting shaft 83, a control motor is fixedly installed on the sliding seat 81, and a fifth gear 85 is fixedly installed at the output end of the control motor. The fifth gear 85 meshes with the fourth gear 831, and the thickness of the fifth gear 85 is greater than that of the fourth gear 831, so that the connecting shaft 83 can maintain the meshing of the fifth gear 85 and the fourth gear 831 during the lifting and lowering process.

[0034] It should be noted that, in order to ensure that the connecting shaft 83 can move up and down during rotation, a limiting block is provided on the outer side of the bushing, and a limiting groove that cooperates with the limiting block is provided on the sliding seat 81. The inner side of the bushing is rotatably connected to the connecting shaft 83 through a bearing. The above structures are all existing technologies, and will not be described in detail here.

[0035] Please see Figure 2 In this embodiment, a limiting mechanism 50 is further provided on the platform 21. The limiting mechanism 50 includes a mounting base 51 fixedly installed on the platform 21, multiple swing rods 52 rotatably installed around the mounting base 51, and a lifting mechanism disposed inside the platform body 22. The lifting mechanism includes a drive screw 54 rotatably installed on the platform body 22. A threaded sleeve is threadedly connected to the upper end of the drive screw 54. The threaded sleeve is slidably connected to the platform 21, and a lifting rod 59 is fixedly installed on the upper end of the threaded sleeve. Figure 3 As shown, one end of the swing rod 52 is hinged to the lifting rod 59, and the other end of the swing rod 52 extends above the annular groove. A limit ball 53 is rotatably installed on the other end of the swing rod 52. The inner side of the swing rod 52 is connected to the mounting base 51 through the first spring 58. When the drive screw 54 rotates, it controls the screw sleeve to move up and down. In turn, the lifting rod 59 controls the rotation of the swing rod 52, changing the distance between the limit ball 53 and the magnetic core 60 placed inside the annular groove. The limit ball 53 guides and limits the magnetic core 60 to prevent the magnetic core 60 from falling off.

[0036] Furthermore, in some embodiments of this application, a drive motor 56 is fixedly installed inside the platform 22, a second gear 57 is fixedly installed at the output end of the drive motor 56, and a first gear 55 is fixedly installed on the drive screw 54, the first gear 55 meshing with the second gear 57.

[0037] In this embodiment, a plurality of support mechanisms 70 are provided in an annular groove. In this embodiment, the annular groove is provided with a receiving groove for placing the support mechanism 70. The support mechanism 70 includes a support component 71 and a drive ring 72. The drive ring 72 is used to drive the support component 71 to rise. After the support component 71 rises, it lifts the magnetic core 60. After the support component 71 falls, the magnetic core 60 falls under the action of gravity. This increases the contact trajectory between the grinding mechanism and the surface of the magnetic core 60 during the rotation of the magnetic core 60, thereby improving the grinding effect.

[0038] Furthermore, in the embodiments of this application, such as Figure 7 As shown, the support assembly 71 includes a lifting seat 711 slidably installed in the receiving groove and a first top block 712 fixedly installed at the bottom of the lifting seat 711. A connecting frame 713 is rotatably installed on the side of the lifting seat 711, and a support roller 714 for guiding the magnetic core 60 is rotatably installed on the connecting frame 713. The drive ring 72 is provided with at least one second top block 723 that cooperates with the first top block 712. Both the first top block 712 and the second top block 723 have a wedge-shaped surface on their adjacent sides. When the second top block 723 contacts the first top block 712, the second top block 723 pushes the first top block 712 up through the wedge-shaped surface, thereby controlling the connecting frame 713 to rise.

[0039] Furthermore, in this embodiment, the drive ring 72 is rotatably mounted inside the platform 22, and a gear ring 721 is fixedly mounted on the drive ring 72. A rotary motor is fixedly mounted inside the platform 22, and a third gear 722 is fixedly mounted on the output end of the rotary motor. The third gear 722 meshes with the gear ring 721, such as... Figure 3 As shown, the rotary motor controls the third gear 722 to rotate, thereby driving the gear ring 721 and the drive ring 72 to rotate, so that the second top block 723 approaches and contacts the first top block 712.

[0040] This invention uses a first grinding mechanism 30 and a second grinding mechanism 80 to grind the inner and outer surfaces of the magnetic core. The first grinding mechanism 30 includes a first frame 31 fixedly mounted on the table 21 and a first grinding roller 32 rotatably mounted on the first frame 31. By changing the direction of the first grinding roller 32, the first grinding roller 32 can both drive the magnetic core 60 to rotate through the friction rough surface set on its surface and grind the magnetic core 60. In addition, the second grinding mechanism 80 includes a sliding seat 81 slidably mounted on the table 21, a second grinding roller 82, a first cylinder 84 and a second cylinder 86. By changing the position of the second grinding roller, the second grinding roller can both adapt to magnetic cores 60 of different thicknesses and effectively fit the surface of the magnetic core 60, thereby improving the inner and outer grinding effect of the magnetic core.

[0041] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0042] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A ring-shaped magnetic core processing and polishing device, comprising a support frame (10) and a worktable (20), wherein the worktable (20) is mounted on the support frame (10), the worktable (20) includes a table surface (21) and a platform body (22) connected to the table surface (21), wherein the platform body (22) has an annular groove for placing a magnetic core (60), characterized in that, It also includes a first polishing mechanism (30), a drive mechanism (40), and a second polishing mechanism (80). The drive mechanism (40) is located on one side of the annular groove, and the first polishing mechanism (30) is located on the other side of the annular groove. The first polishing mechanism (30) includes a first frame (31) fixedly mounted on the table (21) and a first polishing roller (32) rotatably mounted on the first frame (31). The first polishing roller (32) is rotatably mounted on the first frame (31) via a rotating shaft (34). A housing (35) that cooperates with the rotating shaft (34) is installed on the first frame (31). A swing plate (341) is fixedly mounted on the rotating shaft (34). An arc-shaped cavity for the swing plate (341) to rotate is opened inside the housing (35). A baffle (351) is installed inside the arc-shaped cavity. A connecting spring (342) is provided between the baffle (351) and the swing plate (341). The magnetic core (60) is provided with a second polishing mechanism (80) on both its inner and outer sides. The second polishing mechanism (80) includes a sliding seat (81) slidably mounted on the table (21), a second polishing roller (82), a first cylinder (84) and a second cylinder (86). A connecting shaft (83) is mounted on the second polishing roller (82). The connecting shaft (83) is rotatably mounted on the sliding seat (81) through a bushing. The bushing is slidably connected to the table (21). The first cylinder (84) is fixedly mounted on the sliding seat (81). The second cylinder (86) is fixedly mounted on the bottom of the table (21). The telescopic end of the first cylinder (84) is connected to the connecting shaft (83). The telescopic end of the second cylinder (86) is connected to the sliding seat (81). The platform (21) is also provided with a limiting mechanism (50). The limiting mechanism (50) includes a mounting base (51) fixedly installed on the platform (21), multiple swing rods (52) rotatably installed around the mounting base (51), and a lifting mechanism provided inside the platform (22). The lifting mechanism includes a drive screw (54) rotatably installed on the platform (22). The upper end of the drive screw (54) is threadedly connected to a screw sleeve. The screw sleeve is slidably connected to the platform (21), and a lifting rod (59) is fixedly installed at the upper end of the screw sleeve. One end of the swing rod (52) is hinged to the lifting rod (59), and the other end of the swing rod (52) extends to the top of the annular groove. A limiting ball (53) is rotatably installed at the other end of the swing rod (52). The inner side of the swing rod (52) is connected to the mounting base (51) through a first spring (58). A drive motor (56) is fixedly installed inside the platform (22). A second gear (57) is fixedly installed at the output end of the drive motor (56). A first gear (55) is fixedly installed on the drive screw (54). The first gear (55) meshes with the second gear (57).

2. The ring-shaped magnetic core processing and polishing device according to claim 1, characterized in that, A driven gear (36) is fixedly installed on the rotating shaft (34), and a drive gear (37) is rotatably installed on the first frame (31). The drive gear (37) is a sector gear structure, and the drive gear (37) meshes with the driven gear (36). A first motor (33) for controlling the rotation of the drive gear (37) is also installed on the first frame (31).

3. The annular magnetic core processing and polishing device according to claim 1, characterized in that, The drive mechanism (40) includes a second frame (41) slidably mounted on a table (21) and a drive roller (42) rotatably mounted on the second frame (41). A second motor (43) for controlling the rotation of the drive roller (42) is mounted on the second frame (41). A sliding groove is provided on the table (21) for the second frame (41) to slide. An elastic element connected to the second frame (41) is provided inside the sliding groove.

4. The ring-shaped magnetic core processing and polishing device according to claim 1, characterized in that, A fourth gear (831) is fixedly installed on the connecting shaft (83), a control motor is fixedly installed on the sliding seat (81), and a fifth gear (85) is fixedly installed at the output end of the control motor. The fifth gear (85) meshes with the fourth gear (831), and the thickness of the fifth gear (85) is greater than that of the fourth gear (831).

5. The annular magnetic core processing and polishing apparatus according to any one of claims 1-4, characterized in that, It also includes several support mechanisms (70) disposed in an annular groove. The annular groove has a receiving groove for placing the support mechanism (70). The support mechanism (70) includes a support component (71) and a drive ring (72).

6. The annular magnetic core processing and polishing device according to claim 5, characterized in that, The support assembly (71) includes a lifting seat (711) slidably mounted in a receiving groove and a first top block (712) fixedly mounted on the bottom of the lifting seat (711). A connecting frame (713) is rotatably mounted on the side of the lifting seat (711), and a support roller (714) for guiding the magnetic core (60) is rotatably mounted on the connecting frame (713).

7. The annular magnetic core processing and polishing apparatus according to claim 6, characterized in that, The drive ring (72) is provided with at least one second top block (723) that cooperates with the first top block (712), and a wedge-shaped surface is provided on the side of the first top block (712) and the second top block (723) that are close to each other.

8. The annular magnetic core processing and polishing apparatus according to claim 7, characterized in that, The drive ring (72) is rotatably installed inside the platform (22). A gear ring (721) is fixedly installed on the drive ring (72). A rotary motor is fixedly installed inside the platform (22). A third gear (722) is fixedly installed at the output end of the rotary motor. The third gear (722) meshes with the gear ring (721).

Images