Grinding machine for machining rare earth permanent magnet

Abstract

The grinding machine comprises a machining table, a rotating table rotationally arranged at the top end of the machining table, an upper grinding wheel arranged above the rotating table, a lower grinding wheel arranged below the rotating table and a side grinding wheel arranged on one side of the rotating table, and is characterized in that a plurality of limiting grooves are formed in the edge of the rotating table; a plurality of driving rollers are arranged on the rotating table, a transmission assembly is arranged in the rotating table, the transmission assembly is in transmission connection with the driving rollers, and one side of each driving roller extends into the corresponding limiting groove to drive the corresponding columnar permanent magnet in the corresponding limiting groove to rotate; the multi-station permanent magnet grinding machine has the advantages that through cooperative work of the rotating table, the upper grinding wheel, the lower grinding wheel and the side grinding wheels and combined motion of revolution and rotation of columnar permanent magnets, the end face and the outer circumferential face of a workpiece can be synchronously ground in one-time clamping, the multi-station limiting groove layout is adopted, the multiple permanent magnets can be clamped at the same time for continuous machining, and the machining efficiency is improved. And frequent shutdown for position adjustment is not needed.

Description

Technical Field

[0001] The invention relates to the technical field of grinding devices, in particular to a grinding machine for processing rare earth permanent magnets. Background Art

[0002] Rare earth permanent magnets are permanent magnetic materials with rare earth metals and transition metals as the main components. They occupy a key position in modern industry with their excellent magnetic properties, such as high remanence, high coercivity and high magnetic energy product. In the field of electronic equipment, rare earth permanent magnets are widely used in hard disk drives, mobile phone vibration motors, headphones, etc., providing support for the miniaturization and high performance of electronic products; in the new energy vehicle industry, they are used to manufacture drive motors, significantly improving the power performance and energy efficiency of automobiles; in the field of wind power generation, rare earth permanent magnet generators have become an important force in promoting the development of clean energy with their efficient and stable power generation capabilities. In the processing of rare earth permanent magnets, grinders are a vital equipment.

[0003] Chinese patent CN116175344A discloses a grinding machine for permanent magnet processing, comprising a base plate, two symmetrically arranged slide rails are fixedly connected to both sides of the middle part of the upper surface of the base plate, the upper ends of the two slide rails are slidably connected to a slide sleeve, and the upper ends of the two slide sleeves are fixedly connected to a first U-shaped plate. The beneficial effects achieved by the present invention are: the first direction is automatically adjusted and moved under the sliding limit action of the first electric telescopic rod in cooperation with the slide rail and the slide sleeve, and the threaded sleeve permanent magnet is driven to swim under the action of the slide rod and the slide groove through the driving motor and the thread, so as to realize automatic movement in the second direction, and multi-axis synchronous movement adjustment can be realized in the process of processing and grinding, and the permanent magnet in the support is conveniently and stably driven to rotate to adjust the angle through the stepping motor, the annular ring, the annular groove and the connecting rod, so as to facilitate grinding at multiple angles, with a high degree of automation and facilitate increasing the grinding efficiency of the permanent magnet.

[0004] As shown in the above patent, the existing rare earth permanent magnet processing grinder mainly clamps the permanent magnet in a specific position through a fixture, and then uses the high-speed rotation of the grinding wheel to grind the permanent magnet. Since the permanent magnet is clamped by the fixture, the clamped part cannot be touched by the grinding wheel during the first grinding. In order to achieve the grinding of the entire surface of the permanent magnet, the current grinding process has to be interrupted, and the position of the permanent magnet in the fixture is manually adjusted. Then, the grinder is started again to grind the previously clamped position. This operation of repeatedly adjusting the position not only consumes a lot of time, but also seriously affects the continuity of the grinding work. In actual production, frequent shutdowns to adjust the position of the permanent magnet greatly reduce the overall grinding efficiency and cannot meet the needs of large-scale and high-efficiency production. Moreover, too much manual intervention in the adjustment process also increases the complexity of the operation and the possibility of error, which is not conducive to the stability control of product quality.

[0005] Therefore, it is necessary to provide a rare earth permanent magnet processing grinding machine to solve the above technical problems. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a grinding machine for processing rare earth permanent magnets. Through the coordinated work of a rotating table, an upper grinding wheel, a lower grinding wheel and a side grinding wheel, and the combined motion of the revolution and rotation of a cylindrical permanent magnet, the end face and the outer circumference of the workpiece can be synchronously ground in one clamping.

[0007] The technical solution adopted by the present invention to solve the above technical problems is: A grinding machine for processing rare earth permanent magnets comprises a processing table, a rotating table rotatably arranged at the top of the processing table, an upper grinding wheel arranged above the rotating table, a lower grinding wheel arranged below the rotating table and a side grinding wheel arranged at one side of the rotating table, a plurality of limiting grooves are provided on the edge of the rotating table, a plurality of driving rollers are provided on the rotating table, a transmission assembly is provided inside the rotating table, the transmission assembly is connected to the driving roller in a transmission manner, one side of the driving roller extends into the limiting groove to drive the columnar permanent magnet in the limiting groove to rotate, the lower grinding wheel is provided with a first notch on a side close to the side grinding wheel, the upper grinding wheel is provided with a second notch on a side close to the side grinding wheel, and when the columnar permanent magnet moves between the first notch and the second notch, the columnar permanent magnet contacts the side grinding wheel.

[0008] The rotating platform is provided with a plurality of slide grooves connected with the limiting grooves, a support box is slidably installed in the slide groove, the support box is elastically connected to the inner wall of the slide groove through a tension spring, and an adjustment component for adjusting the position of the support box is arranged on the rotating platform.

[0009] The adjustment assembly includes a sliding rod and an adjustment column. A circular groove is provided in the middle of the rotating table. One end of the sliding rod is fixedly connected to the support box, and the other end of the sliding rod extends into the circular groove. A ball is embedded in the end of the sliding rod away from the support box. The adjustment column is fixedly installed on the bottom end of the upper mounting seat. An inclined surface is provided on the edge of the bottom of the adjustment column, and the adjustment column extends into the circular groove.

[0010] The transmission assembly includes an inner gear ring, a connecting plate and a plurality of gears. The connecting plate is rotatably mounted inside the rotating table, the inner gear ring is fixedly mounted on the top of the connecting plate, a connecting shaft is rotatably mounted on the support box, the driving roller is fixedly sleeved on the connecting shaft, the bottom end of the connecting shaft passes through the bottom wall of the support box and is fixedly sleeved with gears, and the gears are adapted to the inner gear ring.

[0011] An anti-skid plate is fixedly installed in the middle of the top of the connecting plate, and the anti-skid plate is located at the bottom of the inner cavity of the circular groove. A rubber pad is fixedly installed at the bottom of the adjusting column. When the adjusting column extends into the interior of the rotating table, the rubber pad presses on the anti-skid plate.

[0012] A mounting frame is fixedly mounted on the top of the processing table, a first hydraulic cylinder is fixedly mounted on the mounting frame, an upper mounting seat is mounted on the output end of the first hydraulic cylinder, and the upper grinding wheel is fixedly mounted on the bottom end of the upper mounting seat.

[0013] A spray plate is fixedly mounted on the mounting frame, a plurality of first through grooves are formed on the rotating table, a second through groove connected to the first through grooves is formed on the top wall of the support box, a water retaining ring is fixedly mounted on the processing table, the rotating table is arranged on the inner side of the water retaining ring, and a drainage outlet is connected to one side of the water retaining ring.

[0014] A connecting ring is fixedly mounted on the top of the processing table, a lower mounting seat is fixedly mounted on the top of the connecting ring, and the lower grinding wheel is fixedly mounted on the lower mounting seat.

[0015] A first motor is fixedly mounted on the top of the processing table, a rotating shaft is fixedly mounted on the output end of the first motor, the rotating shaft is located on the inner side of the connecting ring, and the top of the rotating shaft is fixedly connected to the middle of the rotating table.

[0016] A second hydraulic cylinder is fixedly mounted on the top of the processing table, a mounting table is fixedly mounted on the output end of the second hydraulic cylinder, a second motor is fixedly mounted on the mounting table, a side mounting seat is mounted on the output end of the second motor, and the side grinding wheel is fixedly mounted on the side mounting seat.

[0017] Compared with the prior art, the advantages of the present invention are: the present invention, through the coordinated work of the rotating table, the upper grinding wheel, the lower grinding wheel and the side grinding wheel, cooperates with the composite motion of the revolution and rotation of the columnar permanent magnet, so that the workpiece can complete the full-surface synchronous grinding of the end face and the outer circumference in one clamping, and adopts a multi-station limit groove layout, and can clamp multiple permanent magnets at the same time for continuous processing without frequent shutdown to adjust the position. Through the linkage design of the transmission component and the drive roller, the permanent magnet is automatically driven to rotate, and the timing coordination of the grinding wheel notch and the side grinding wheel is combined to achieve seamless coverage of the grinding area. The composite motion of the rotation and revolution of the permanent magnet makes the grinding wheel grinding path evenly cover the workpiece surface, avoiding the problem of local over-grinding or missed grinding caused by traditional single-point fixing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention when grinding a cylindrical permanent magnet; Figure 3This is one of the structural schematic diagrams of the upper grinding wheel, the lower grinding wheel and the rotating table of the present invention; Figure 4 This is the second structural schematic diagram of the upper grinding wheel, the lower grinding wheel and the rotating table of the present invention; Figure 5 It is a schematic cross-sectional structure diagram of the rotating table of the present invention; Figure 6 for Figure 5 A schematic diagram of the enlarged structure at point A; Figure 7 It is a schematic structural diagram of the transmission assembly, the slide rod and the support box of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the support box, the driving roller and the sliding rod of the present invention; Fig. 9 It is a schematic structural diagram of the inner gear ring, the connecting plate and the anti-skid plate of the present invention.

[0019] In the figure: 1, processing table; 2, rotating table; 201, limiting groove; 202, first through groove; 203, sliding groove; 204, circular groove; 3, rotating shaft; 4, first motor; 5, lower mounting seat; 6, lower grinding wheel; 601, first notch; 7, connecting ring; 8, upper mounting seat; 9, upper grinding wheel; 901, second notch; 10, mounting frame; 11, first hydraulic cylinder; 12, mounting table; 13, second motor; 15, side mounting Mounting seat; 16, side grinding wheel; 17, second hydraulic cylinder; 18, support box; 1801, second through groove; 19, driving roller; 20, connecting shaft; 21, sliding rod; 22, tension spring; 23, ball bearing; 24, adjusting column; 2401, inclined surface; 25, inner gear ring; 26, connecting plate; 27, anti-skid plate; 28, rubber pad; 29, gear; 30, columnar permanent magnet; 31, spray plate; 32, water retaining ring; 33, drain outlet. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to the accompanying drawings in the embodiments of the present invention.

[0021] See also Figure 1 to Figure 4In an embodiment of the present invention, a grinding machine for processing rare earth permanent magnets includes a processing table 1, a rotating table 2 rotatably arranged at the top of the processing table 1, an upper grinding wheel 9 arranged above the rotating table 2, a lower grinding wheel 6 arranged below the rotating table 2, and a side grinding wheel 16 arranged on one side of the rotating table 2. The edge of the rotating table 2 is provided with a plurality of limiting grooves 201, and the inner wall of the limiting groove 201 is an arc structure with an arc of 1.3π-1.6π. The rotating table 2 is provided with a plurality of driving rollers 19, and the number of the driving rollers 19 is the same as the number of the limiting grooves 201. The inner wall of the rotating table 2 is provided with a plurality of driving rollers 19. The number of the driving rollers 19 is the same as the number of the limiting grooves 201. The lower grinding wheel 6 is provided with a transmission component, which is connected to the driving roller 19. One side of the driving roller 19 extends into the limiting groove 201 to drive the columnar permanent magnet 30 in the limiting groove 201 to rotate. The lower grinding wheel 6 is provided with a first notch 601 on the side close to the side grinding wheel 16, and the upper grinding wheel 9 is provided with a second notch on the side close to the side grinding wheel 16. When the columnar permanent magnet 30 moves between the first notch 601 and the second notch, the columnar permanent magnet 30 contacts the side grinding wheel 16. During processing, the upper grinding wheel 9 is moved upward, and then the columnar permanent magnet 30 is moved from the limiting groove 201 to the lower grinding wheel 9. The upper end of the columnar permanent magnet 30 is extended into the limiting groove 201, and then the upper grinding wheel 9 is driven to move downward so that the upper grinding wheel 9 contacts the top wall of the columnar permanent magnet 30. The width of the side opening of the limiting groove 201 is smaller than the diameter of the columnar permanent magnet 30, so that the columnar permanent magnet 30 will not escape from the side opening of the limiting groove 201, and the upper grinding wheel 9 and the lower grinding wheel 6 can be limited from the upper and lower sides of the columnar permanent magnet 30. When grinding, the rotating table 2 is driven to rotate. Since the top end of the columnar permanent magnet 30 contacts the upper grinding wheel 9 and the bottom end contacts the lower grinding wheel 6, the rotating table 2 drives the columnar permanent magnet 30 to revolve. The upper grinding wheel 9 and the lower grinding wheel 6 can grind the top and bottom ends of the columnar permanent magnet 30. When the columnar permanent magnet 30 moves between the first notch 601 and the second notch, the outer peripheral wall of the columnar permanent magnet 30 contacts the side grinding wheel 16. The outer peripheral wall of the columnar permanent magnet 30 is grinded in coordination with the rotation of the side grinding wheel 16, and the grinding position is adjusted by the rotation of the columnar permanent magnet 30, thereby achieving simultaneous grinding of the two end walls and the outer peripheral wall of the columnar permanent magnet 30, significantly improving the grinding efficiency. There is no need to stop the machine to adjust the position of the columnar permanent magnet 30 during grinding, and it is more convenient to use.

[0022] In this solution, the rotating table 2, the upper grinding wheel 9, the lower grinding wheel 6 and the side grinding wheel 16 work together, and cooperate with the composite motion of the revolution and rotation of the columnar permanent magnet 30, so that the end face and the outer circumference of the workpiece can be synchronously polished in one clamping. The multi-station limit groove 201 layout can clamp multiple permanent magnets at the same time for continuous processing without frequent stoppage to adjust the position, reducing the non-processing time by about 70%-90%, meeting the needs of large-scale production. The linkage design of the transmission component and the driving roller 19 automatically drives the permanent magnet to rotate, and the first notch 601, the second notch 901 and the side grinding wheel are combined. The timing of 16 is coordinated to achieve seamless coverage of the grinding area. The curvature of the arc-shaped inner wall of the limiting groove 201 is designed to be 1.3π-1.6π. Combined with the optimized design of the side opening width, it is ensured that the workpiece is stably clamped and will not fall out during high-speed rotation, thereby reducing the complexity of operation and the risk of human error. The composite motion of the rotation and revolution of the permanent magnet makes the grinding path of the grinding wheel evenly cover the surface of the workpiece, avoiding the problem of local over-grinding or missed grinding caused by traditional single-point fixation. The synchronous grinding action of the upper grinding wheel 9, the lower grinding wheel 6 and the side grinding wheel 16 can achieve coordinated control of dimensional accuracy and surface roughness, and the product consistency is improved by more than 30%.

[0023] In this embodiment, preferably, grinding sandpaper (not shown in the figure) is embedded in the inner side of the limiting groove 201, and the grinding sandpaper is in contact with the inner wall of the limiting groove 201, so that the columnar permanent magnet 30 can be polished by the grinding sandpaper when rotating in the limiting groove 201, thereby improving the polishing efficiency of the outer peripheral wall of the columnar permanent magnet 30.

[0024] In this embodiment, preferably, a connecting ring 7 is fixedly installed on the top of the processing table 1, a lower mounting seat 5 is fixedly installed on the top of the connecting ring 7, the lower grinding wheel 6 is fixedly installed on the lower mounting seat 5, and the lower grinding wheel 6 can be removed from the lower mounting seat 5 for replacement; a first motor 4 is fixedly installed on the top of the processing table 1, a rotating shaft 3 is fixedly installed on the output end of the first motor 4, the rotating shaft 3 is located on the inner side of the connecting ring 7, and the top of the rotating shaft 3 is fixedly connected to the middle part of the rotating table 2; the rotating shaft 3 can be driven to rotate by the first motor 4, and the rotating table 2 is driven to rotate when the rotating shaft 3 rotates.

[0025] In this embodiment, preferably, a mounting frame 10 is fixedly installed on the top of the processing table 1, and a first hydraulic cylinder 11 is fixedly installed on the mounting frame 10, and an upper mounting seat 8 is installed on the output end of the first hydraulic cylinder 11, and the upper grinding wheel 9 is fixedly installed on the bottom end of the upper mounting seat 8, and the upper grinding wheel 9 can be removed from the upper mounting seat 8 for replacement; the upper mounting seat 8 can be driven to move up and down by the extension and retraction of the output end of the first hydraulic cylinder 11, thereby driving the upper grinding wheel 9 to move up and down, and after the upper grinding wheel 9 moves upward, the columnar permanent magnet 30 can be disassembled and assembled, and when the upper grinding wheel 9 moves downward to contact with the columnar permanent magnet 30, the top wall of the columnar permanent magnet 30 can be polished.

[0026] In this embodiment, preferably, a second hydraulic cylinder 17 is fixedly installed on the top of the processing table 1, and a mounting table 12 is fixedly installed on the output end of the second hydraulic cylinder 17, and a second motor 13 is fixedly installed on the mounting table 12, and a side mounting seat 15 is installed on the output end of the second motor 13, and the side grinding wheel 16 is fixedly installed on the side mounting seat 15; the mounting table 12 can be driven to move by the output of the second hydraulic cylinder 17, and the side mounting seat 15 is driven to move when the mounting table 12 moves, thereby driving the side grinding wheel 16 to move, so that the side grinding wheel 16 contacts with the columnar permanent magnet 30 to be polished, and the side mounting seat 15 can be driven to rotate by the second motor 13, thereby driving the side grinding wheel 16 to rotate, so as to grind the outer peripheral wall of the columnar permanent magnet 30.

[0027] See also Figure 3 to Figure 9In the embodiment of the present invention, a plurality of slide grooves 203 connected with the limiting grooves 201 are provided on the rotating table 2, and a support box 18 is slidably installed in the slide groove 203, and the support box 18 is elastically connected to the inner side wall of the slide groove 203 by a tension spring 22. The rotating table 2 is provided with an adjusting component for adjusting the position of the support box 18; the adjusting component includes a slide bar 21 and an adjusting column 24, and a circular groove 204 is provided in the middle of the rotating table 2, one end of the slide bar 21 is fixedly connected to the support box 18, and the other end of the slide bar 21 extends into the circular groove 204, and a ball 23 is embedded and installed at the end of the slide bar 21 away from the support box 18, and the adjusting column 24 is fixedly installed at the bottom end of the upper mounting seat 8, and the edge of the bottom of the adjusting column 24 is provided with an inclined surface 2401, and the adjusting column 24 extends into the circular groove 204; when loading, the adjusting column 24 moves upward with the upper mounting seat 8 and moves out of the circular groove 204, so that the adjusting column 2 4 is separated from the ball 23. At this time, the support box 18 moves toward the direction close to the circular groove 204 under the tension of the tension spring 22, so that the driving roller 19 moves out of the limiting groove 201, so as to prevent the driving roller 19 from interfering with the columnar permanent magnet 30 extending into the limiting groove 201, making it more convenient to put the columnar permanent magnet 30. When the upper mounting seat 8 drives the upper grinding wheel 9 to move downward for grinding, the upper mounting seat 8 drives the adjusting column 24 to move downward into the circular groove 204. When the adjusting column 24 When the inclined surface 2401 at the bottom contacts the ball 23, as the adjusting column 24 continues to move downward, the adjusting column 24 pushes the ball 23 to move away from the adjusting column 24 through the inclined surface 2401, so that the slide bar 21 pushes the support box 18 to move toward the limiting groove 201, so that the driving roller 19 partially enters the limiting groove 201 and contacts the columnar permanent magnet 30 in the limiting groove 201, thereby driving the columnar permanent magnet 30 to rotate by the rotation of the driving roller 19.

[0028] Since the rotating table 2 is in a rotating state, driving by an electrical driving structure will cause the wire to be entangled, so the following transmission component with a purely mechanical structure transmission is set.

[0029] In this embodiment, preferably, the transmission assembly includes an inner gear ring 25, a connecting disk 26 and a plurality of gears 29, the connecting disk 26 is rotatably mounted inside the rotating table 2, the inner gear ring 25 is fixedly mounted on the top end of the connecting disk 26, and the inner gear ring 25 and the connecting disk 26 are coaxially arranged, a connecting shaft 20 is rotatably mounted on the support box 18, the driving roller 19 is fixedly sleeved on the connecting shaft 20, the bottom end of the connecting shaft 20 passes through the bottom wall of the support box 18 and is fixedly sleeved with a gear 29, the gear 29 is adapted to the inner gear ring 25, an anti-skid disk 27 is fixedly mounted in the middle of the top end of the connecting disk 26, the anti-skid disk 27 is provided with an anti-skid groove to improve the anti-skid performance, the anti-skid disk 27 is located at the bottom of the inner cavity of the circular groove 204, the adjusting A rubber pad 28 is fixedly installed at the bottom end of the column 24. When the adjusting column 24 extends into the interior of the rotating table 2, the rubber pad 28 presses on the anti-skid disk 27. During grinding, since the rubber pad 28 at the bottom of the adjusting column 24 presses on the anti-skid disk 27, and the adjusting column 24 is in a stationary state, the anti-skid disk 27, the connecting disk 26 and the inner gear ring 25 are all in a stationary state. When the rotating table 2 rotates, the gear 29 revolves together with the rotating table 2, and the gear 29 meshes with the inner gear ring 25, so that the gear 29 rotates. When the gear 29 rotates, it drives the driving roller 19 to rotate through the connecting shaft 20, and then drives the driving roller 19 to rotate through the transmission component, and the rotation of the driving roller 19 is driven by the power of the rotation of the rotating table 2, and there is no need to set up an additional electrical drive structure for driving.

[0030] In this embodiment, preferably, a spray plate 31 is fixedly installed on the mounting frame 10, a plurality of first through grooves 202 are provided on the rotating table 2, a second through groove 1801 connected to the first through groove 202 is provided on the top wall of the support box 18, a water retaining ring 32 is fixedly installed on the processing table 1, the rotating table 2 is arranged on the inner side of the water retaining ring 32, and a drain outlet 33 is provided on one side of the water retaining ring 32; a gap is provided between the driving roller 19 and the inner wall of the support box 18, and during grinding, water is sprayed through the spray plate 31 to allow water to flow into the support box 18 through the first through groove 202 and the second through groove 1801, thereby cleaning the driving roller 19 in the support box 18 to prevent grinding debris from adhering to the driving roller 19, and the water spraying can also cool the device to prevent the device from overheating, and the discharged water flows into the inner side of the water retaining ring 32 and is discharged through the drain outlet 33.

[0031] The above description is only a preferred embodiment of the present invention, so all equivalent changes or modifications made according to the structure, characteristics and principles described in the scope of the patent application of the present invention are included in the scope of the patent application of the present invention.

Claims

1. A grinding machine for processing rare earth permanent magnets, comprising a processing table, a rotating table rotatably arranged on the top of the processing table, an upper grinding wheel arranged above the rotating table, a lower grinding wheel arranged below the rotating table, and a side grinding wheel arranged on one side of the rotating table, characterized in that: A plurality of limiting grooves are provided on the edge of the rotating table, a plurality of driving rollers are arranged on the rotating table, a transmission assembly is arranged inside the rotating table, the transmission assembly is connected to the driving roller in driving manner, one side of the driving roller extends into the limiting groove to drive the columnar permanent magnet in the limiting groove to rotate, the lower grinding wheel is provided with a first notch on the side close to the side grinding wheel, the upper grinding wheel is provided with a second notch on the side close to the side grinding wheel, when the columnar permanent magnet moves between the first notch and the second notch, the columnar permanent magnet contacts the side grinding wheel.

2. A grinding machine for processing rare earth permanent magnets according to claim 1, characterized in that: The rotating platform is provided with a plurality of slide grooves connected with the limiting grooves, a support box is slidably installed in the slide groove, the support box is elastically connected to the inner wall of the slide groove through a tension spring, and an adjustment component for adjusting the position of the support box is arranged on the rotating platform.

3. A grinding machine for processing rare earth permanent magnets according to claim 2, characterized in that: The adjustment assembly includes a sliding rod and an adjustment column. A circular groove is provided in the middle of the rotating table. One end of the sliding rod is fixedly connected to the support box, and the other end of the sliding rod extends into the circular groove. A ball is embedded in the end of the sliding rod away from the support box. The adjustment column is fixedly installed on the bottom end of the upper mounting seat. An inclined surface is provided on the edge of the bottom of the adjustment column, and the adjustment column extends into the circular groove.

4. A grinding machine for processing rare earth permanent magnets according to claim 3, characterized in that: The transmission assembly includes an inner gear ring, a connecting plate and a plurality of gears. The connecting plate is rotatably mounted inside the rotating table, the inner gear ring is fixedly mounted on the top of the connecting plate, a connecting shaft is rotatably mounted on the support box, the driving roller is fixedly sleeved on the connecting shaft, the bottom end of the connecting shaft passes through the bottom wall of the support box and is fixedly sleeved with gears, and the gears are adapted to the inner gear ring.

5. A grinding machine for processing rare earth permanent magnets according to claim 4, characterized in that: An anti-skid plate is fixedly installed in the middle of the top of the connecting plate, and the anti-skid plate is located at the bottom of the inner cavity of the circular groove. A rubber pad is fixedly installed at the bottom of the adjusting column. When the adjusting column extends into the interior of the rotating table, the rubber pad presses on the anti-skid plate.

6. A grinding machine for processing rare earth permanent magnets according to claim 2, characterized in that: A mounting frame is fixedly mounted on the top of the processing table, a first hydraulic cylinder is fixedly mounted on the mounting frame, an upper mounting seat is mounted on the output end of the first hydraulic cylinder, and the upper grinding wheel is fixedly mounted on the bottom end of the upper mounting seat.

7. A grinding machine for processing rare earth permanent magnets according to claim 6, characterized in that: A spray plate is fixedly mounted on the mounting frame, a plurality of first through grooves are formed on the rotating table, a second through groove connected to the first through grooves is formed on the top wall of the support box, a water retaining ring is fixedly mounted on the processing table, the rotating table is arranged on the inner side of the water retaining ring, and a drainage outlet is connected to one side of the water retaining ring.

8. The rare earth permanent magnet processing grinding machine according to claim 1, characterized in that: A connecting ring is fixedly mounted on the top of the processing table, a lower mounting seat is fixedly mounted on the top of the connecting ring, and the lower grinding wheel is fixedly mounted on the lower mounting seat.

9. A grinding machine for processing rare earth permanent magnets according to claim 8, characterized in that: A first motor is fixedly mounted on the top of the processing table, a rotating shaft is fixedly mounted on the output end of the first motor, the rotating shaft is located on the inner side of the connecting ring, and the top of the rotating shaft is fixedly connected to the middle of the rotating table.

10. The rare earth permanent magnet processing grinding machine according to claim 1, characterized in that: A second hydraulic cylinder is fixedly mounted on the top of the processing table, a mounting table is fixedly mounted on the output end of the second hydraulic cylinder, a second motor is fixedly mounted on the mounting table, a side mounting seat is mounted on the output end of the second motor, and the side grinding wheel is fixedly mounted on the side mounting seat.

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