A surface treatment device for neodymium iron boron rare earth permanent magnets

Abstract

The present invention relates to a neodymium iron boron rare earth permanent magnet treatment device, and particularly to a surface treatment device for neodymium iron boron rare earth permanent magnets. The purpose of the present invention is to provide a surface treatment device for neodymium iron boron rare earth permanent magnets that can drive the neodymium iron boron rare earth permanent magnet material to rotate. The present invention provides such a surface treatment device for neodymium iron boron rare earth permanent magnets, which includes a support frame, guide rods, a sliding frame, etc. Two guide rods are connected to the upper part inside the support frame, and a sliding frame is slidably connected between the right sides of the two guide rods. By using a hydraulic cylinder as the driving force, the clamping block can be driven to move inward to clamp the neodymium iron boron rare earth permanent magnet material. Then, by using a biaxial motor as the driving force, the neodymium iron boron rare earth permanent magnet material can be driven to rotate. Then, manually push the sliding frame back and forth left and right, and the polishing block can be driven to move back and forth left and right to polish the neodymium iron boron rare earth permanent magnet material, and the operation is simple.

Description

Technical Field

[0001] The present invention relates to a neodymium-iron-boron rare earth permanent magnet processing device, and in particular to a surface treatment device for neodymium-iron-boron rare earth permanent magnets. Background Art

[0002] After the neodymium-iron-boron rare earth permanent magnet material is manufactured, generally, the surface of the neodymium-iron-boron rare earth permanent magnet material needs to be polished, and then the surface of the neodymium-iron-boron rare earth permanent magnet material is subjected to electroplating, anti-corrosion, anti-oxidation and other treatments. The quality of polishing directly affects the electroplating quality of the finished neodymium-iron-boron rare earth permanent magnet material.

[0003] When the existing polishing equipment polishes the surface of the neodymium-iron-boron rare earth permanent magnet material, generally, the neodymium-iron-boron rare earth permanent magnet material needs to be rotated manually to complete the polishing treatment of the surface of the neodymium-iron-boron rare earth permanent magnet material. Such an operation not only takes time and effort, affects work efficiency, but also has a large safety hazard, and the accuracy of manual operation is not high, resulting in a poor polishing effect.

[0004] In summary, there is an urgent need for a surface treatment device for neodymium-iron-boron rare earth permanent magnets that can drive the neodymium-iron-boron rare earth permanent magnet material to rotate to solve the above problems. Summary of the Invention

[0005] In order to overcome the shortcoming that when the existing polishing equipment polishes the surface of the neodymium-iron-boron rare earth permanent magnet material, generally, the neodymium-iron-boron rare earth permanent magnet material needs to be rotated manually, the purpose of the present invention is to provide a surface treatment device for neodymium-iron-boron rare earth permanent magnets that can drive the neodymium-iron-boron rare earth permanent magnet material to rotate.

[0006] The present invention is achieved through the following technical means:

[0007] A surface treatment device for neodymium-iron-boron rare earth permanent magnets includes a support frame, guide rods, a sliding frame, a sliding rod and a polishing block. Two guide rods are connected to the upper part inside the support frame. A sliding frame is slidably connected between the right sides of the two guide rods. A sliding rod is slidably connected to the middle of the lower part of the sliding frame. The bottom end of the sliding rod is connected to a polishing block for polishing the neodymium-iron-boron rare earth permanent magnet material. It also includes a clamping assembly, a pressing-down assembly and a rotating assembly. A clamping assembly for clamping the neodymium-iron-boron rare earth permanent magnet material is arranged at the lower part of the support frame. A pressing-down assembly for driving the polishing block to move downward to contact the neodymium-iron-boron rare earth permanent magnet material is arranged at the upper part of the support frame. A rotating assembly for driving the neodymium-iron-boron rare earth permanent magnet material to rotate is arranged at the lower part of the support frame.

[0008] Preferably, the clamping assembly includes a first support rod, a fixed frame, a hydraulic cylinder, a clamping block and a friction block. The left and right sides of the lower part of the support frame are both connected with a first support rod. The upper parts of the first support rods are both rotatably connected with a fixed frame. A hydraulic cylinder is connected inside each fixed frame. The inner ends of the telescopic rods of the hydraulic cylinders are both connected with a clamping block. Friction blocks are connected to the inner sides of the clamping blocks.

[0009] Preferably, the pressing-down assembly includes a wedge-shaped rod, a first spring and a sliding rod. Two wedge-shaped rods are connected to the upper part inside the support frame. The wedge-shaped rods are located above the guide rods. A first spring is connected between the sliding rod and the sliding frame. A sliding rod is connected to the sliding rod. The sliding rod is slidably connected to the sliding frame. The top end of the sliding rod contacts the two wedge-shaped rods.

[0010] Preferably, the rotating assembly includes a protective shell, a biaxial motor, a rotating shaft, a first transmission wheel and a first transmission belt. The protective shell is connected to the middle of the lower part of the support frame. The biaxial motor is connected to the middle of the lower part of the support frame. The biaxial motor is located inside the protective shell. The output shafts on the left and right sides of the biaxial motor are both rotatably connected with a rotating shaft. The rotating shafts are both rotatably connected to the protective shell and the support frame. First transmission wheels are connected to the outer ends of the rotating shafts and the fixed frames respectively. A first transmission belt is wound around the two first transmission wheels on the left side, and a first transmission belt is also wound around the two first transmission wheels on the right side.

[0011] Preferably, it further includes a moving assembly for driving the polishing block to move left and right reciprocally. The moving assembly includes a second transmission wheel, a second transmission belt, a second support rod and a lead screw. The left and right sides of the upper part of the support frame are both connected with a second support rod. A lead screw is rotatably connected between the lower parts of the two second support rods. The lead screw is rotatably connected to the support frame. The lead screw is located between the two guide rods. The upper part of the sliding frame is threadedly connected to the lead screw. Second transmission wheels are connected to the left and right ends of the lead screw and the fixed frame respectively. The second transmission wheels are located outside the first transmission wheels. A second transmission belt is wound around the two second transmission wheels on the left side, and a second transmission belt is also wound around the two second transmission wheels on the right side.

[0012] Preferably, it further includes a placing assembly for positioning the neodymium iron boron rare earth permanent magnet material. The placing assembly includes a fixed block, a rotating rod, a torsion spring, a connecting rod and a placing frame. The fixed blocks are symmetrically connected to the left and right of the middle part of the rear side of the inner wall of the support frame. A rotating rod is rotatably connected between the two fixed blocks. Connecting rods are connected to the left and right sides of the rotating rod. Torsion springs are wound around the left and right sides of the rotating rod. The two ends of the torsion spring are respectively connected to the fixed block and the connecting rod. Placing frames are connected to the front sides of the connecting rods.

[0013] Preferably, it further includes a pushing component for driving the placement frame to rotate downward and disengage from the neodymium iron boron rare earth permanent magnet material. The pushing component includes a support frame, a push rod, a second spring, and a grooved drum. Support frames are connected to both the left and right sides of the lower part of the support frame. Push rods are slidably connected to the upper parts of the support frames. When the clamping blocks move inward, they will contact the push rods. Two second springs are connected between the push rods and the support frames. Grooved drums are connected to both the left and right ends of the rotating rod. The rear ends of the push rods slide on the grooved drums.

[0014] Preferably, the height of the middle part of the wedge-shaped rod is lower than the heights of the left and right parts.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. By using the hydraulic cylinder as the driving force, the present invention can drive the clamping blocks to move inward to clamp the neodymium iron boron rare earth permanent magnet material. Then, by using the double-shaft motor as the driving force, it can drive the neodymium iron boron rare earth permanent magnet material to rotate. Then, manually push the sliding frame back and forth left and right, and the polishing block can be driven to move back and forth left and right to polish the neodymium iron boron rare earth permanent magnet material, and the operation is simple.

[0017] 2. By using the double-shaft motor as the driving force, the present invention can drive the lead screw to rotate forward and backward intermittently. The lead screw can drive the sliding frame to move back and forth left and right, thus replacing manual pushing of the sliding frame left and right, saving time and effort.

[0018] 3. The placement frame of the present invention can support the bottom of the neodymium iron boron rare earth permanent magnet material, so that the neodymium iron boron rare earth permanent magnet material can be accurately located between the inner sides of the two clamping blocks, thereby enabling faster positioning of the neodymium iron boron rare earth permanent magnet material and saving time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0020] Figure 2 It is a first partial three-dimensional structural schematic diagram of the present invention.

[0021] Figure 3 It is a second partial three-dimensional structural schematic diagram of the present invention.

[0022] Figure 4 It is a structural schematic diagram of the clamping component of the present invention.

[0023] Figure 5 It is a partial structural schematic diagram of the clamping component of the present invention.

[0024] Figure 6 It is a structural schematic diagram of the pressing-down component of the present invention.

[0025] Figure 7 It is a partial structural schematic diagram of the pressing-down component of the present invention.

[0026] Figure 8 This is a schematic structural diagram of the rotating component of the present invention.

[0027] Figure 9 This is a schematic structural diagram of the moving component of the present invention.

[0028] Figure 10 This is a schematic structural diagram of the placing component of the present invention.

[0029] Figure 11 This is a partial schematic structural diagram of the placing component of the present invention.

[0030] Figure 12 This is a schematic structural diagram of the pushing component of the present invention.

[0031] Figure 13 This is a partial schematic structural diagram of the pushing component of the present invention.

[0032] Reference numerals in the drawings: 1: support frame, 2: guide rod, 3: sliding frame, 4: sliding rod, 5: polishing block, 6: clamping component, 601: first support rod, 602: fixed frame, 603: hydraulic cylinder, 604: clamping block, 605: friction block, 7: pressing-down component, 701: wedge-shaped rod, 702: first spring, 703: sliding rod, 8: rotating component, 801: protective shell, 802: dual-axis motor, 803: rotating shaft, 804: first transmission wheel, 805: first transmission belt, 9: moving component, 901: second transmission wheel, 902: second transmission belt, 903: second support rod, 904: lead screw, 10: placing component, 1001: fixed block, 1002: rotating rod, 1003: torsion spring, 1004: connecting rod, 1005: placing frame, 11: pushing component, 1101: support frame, 1102: push rod, 1103: second spring, 1104: grooved drum. Detailed implementation manners

[0033] The present invention will be further described below in conjunction with specific embodiments. The illustrative embodiments and explanations of this invention are used to explain the present invention, but do not limit the present invention.

[0034] Embodiment 1

[0035] A surface treatment device for neodymium iron boron rare earth permanent magnets, refer to Figures 1 - 8, including a support frame 1, guide rods 2, a sliding frame 3, sliding rods 4, polishing blocks 5, a clamping assembly 6, a pressing-down assembly 7 and a rotating assembly 8. Two guide rods 2 are welded to the upper inner side of the support frame 1. A sliding frame 3 is slidably connected between the right sides of the two guide rods 2. A sliding rod 4 is slidably connected to the middle of the lower part of the sliding frame 3. The bottom end of the sliding rod 4 is connected to a polishing block 5. The left and right movement of the polishing block 5 can polish the neodymium iron boron rare earth permanent magnet material. A clamping assembly 6 is arranged at the lower part of the support frame 1. A pressing-down assembly 7 is arranged at the upper part of the support frame 1. A rotating assembly 8 is arranged at the lower part of the support frame 1.

[0036] Refer to Figure 1 , Figure 2 , Figure 4 and Figure 5 , the clamping assembly 6 includes first support rods 601, fixed frames 602, hydraulic cylinders 603, clamping blocks 604 and friction blocks 605. First support rods 601 are welded to the left and right sides of the lower part of the support frame 1. Fixed frames 602 are rotatably connected to the upper parts of the first support rods 601. Hydraulic cylinders 603 are bolted inside the fixed frames 602. The inner ends of the telescopic rods of the hydraulic cylinders 603 are connected to clamping blocks 604. The inward movement of the clamping blocks 604 can clamp the neodymium iron boron rare earth permanent magnet material. Friction blocks 605 are connected to the inner sides of the clamping blocks 604.

[0037] Refer to Figure 2 , Figure 6 and Figure 7 , the pressing-down assembly 7 includes wedge-shaped rods 701, first springs 702 and sliding rods 703. Two wedge-shaped rods 701 are welded to the upper inner side of the support frame 1. The wedge-shaped rods 701 are located above the guide rods 2. The height in the middle of the wedge-shaped rods 701 is lower than the height of the left and right parts. A first spring 702 is connected between the sliding rod 4 and the sliding frame 3. A sliding rod 703 is connected to the sliding rod 4. The sliding rod 703 is slidably connected to the sliding frame 3. The top end of the sliding rod 703 contacts the two wedge-shaped rods 701.

[0038] Refer to Figure 1 , Figure 2 and Figure 8, the rotating assembly 8 includes a protective housing 801, a biaxial motor 802, a rotating shaft 803, a first transmission wheel 804, and a first transmission belt 805. The middle of the lower part of the support frame 1 is connected to the protective housing 801, and the biaxial motor 802 is bolted to the middle of the lower part of the support frame 1. The biaxial motor 802 is located inside the protective housing 801. The output shafts on the left and right sides of the biaxial motor 802 are both rotatably connected to the rotating shaft 803, and the rotating shafts 803 are both rotatably connected to the protective housing 801 and the support frame 1. The outer ends of the rotating shafts 803 and the fixed frame 602 are both connected to the first transmission wheel 804. The first transmission belt 805 is wound around the two first transmission wheels 804 on the left side, and the first transmission belt 805 is also wound around the two first transmission wheels 804 on the right side. Starting the biaxial motor 802 can drive the rotating shaft 803 to rotate, and the fixed frame 602 can be driven to rotate through the first transmission wheel 804 and the first transmission belt 805, thereby driving the neodymium iron boron rare earth permanent magnet material to rotate.

[0039] When people need to perform surface treatment on neodymium iron boron rare earth permanent magnet materials, first place the neodymium iron boron rare earth permanent magnet material between the inner sides of two clamping blocks 604, then start the hydraulic cylinder 603, control the telescopic rod of the hydraulic cylinder 603 to extend, drive the clamping blocks 604 and the friction blocks 605 to move inward, so that the clamping blocks 604 can clamp the neodymium iron boron rare earth permanent magnet material. Then control the telescopic rod of the hydraulic cylinder 603 to stop moving, and then start the double-shaft motor 802, control the output shaft of the double-shaft motor 802 to rotate intermittently forward and backward, drive the rotating shaft 803 to rotate intermittently forward and backward. The rotating shaft 803 can drive the fixed frame 602 to rotate intermittently forward and backward through the first transmission wheel 804 and the first transmission belt 805. The fixed frame 602 drives the hydraulic cylinder 603 and the clamping blocks 604 to rotate intermittently forward and backward, and the clamping blocks 604 drive the neodymium iron boron rare earth permanent magnet material to rotate intermittently forward and backward. The friction blocks 605 can provide a large frictional force, thus preventing the neodymium iron boron rare earth permanent magnet material from slipping. Then push the sliding frame 3 to the left, drive the sliding rod 4, the polishing block 5 and the sliding rod 703 to move to the left. At this time, the wedge-shaped rod 701 will squeeze the sliding rod 703 to move downward, drive the sliding rod 4 and the polishing block 5 to move downward, and the first spring 702 is stretched, so that the polishing block 5 can contact the surface of the neodymium iron boron rare earth permanent magnet material. Through the rotation of the neodymium iron boron rare earth permanent magnet material, the polishing block 5 can polish the surface of the neodymium iron boron rare earth permanent magnet material. When the sliding rod 703 separates from the wedge-shaped rod 701, the first spring 702 returns to its original state, drives the sliding rod 703, the sliding rod 4 and the polishing block 5 to move upward and reset, so that the polishing block 5 separates from the surface of the neodymium iron boron rare earth permanent magnet material, and the sliding rod 703 contacts the wedge-shaped rod 701 again. Then push the sliding frame 3 to the right to reset, drive the sliding rod 4, the polishing block 5 and the sliding rod 703 to move to the right to reset. At this time, the wedge-shaped rod 701 will squeeze the sliding rod 703 to move downward, drive the sliding rod 4 and the polishing block 5 to move downward, and the first spring 702 is stretched, so that the polishing block 5 can contact the surface of the neodymium iron boron rare earth permanent magnet material, and the polishing block 5 can polish the surface of the neodymium iron boron rare earth permanent magnet material again. When the sliding rod 703 separates from the wedge-shaped rod 701, the first spring 702 returns to its original state, drives the sliding rod 703, the sliding rod 4 and the polishing block 5 to move upward and reset, so that the polishing block 5 separates from the surface of the neodymium iron boron rare earth permanent magnet material, and the sliding rod 703 contacts the wedge-shaped rod 701 again. Repeat this process. After the surface of the neodymium iron boron rare earth permanent magnet material is polished, stop pushing the sliding frame 3, then turn off the double-shaft motor 802, the fixed frame 602 stops rotating, the neodymium iron boron rare earth permanent magnet material stops rotating. Then control the telescopic rod of the hydraulic cylinder 603 to shorten, drive the clamping blocks 604 and the friction blocks 605 to move outward and reset, so that the clamping blocks 604 can loosen the neodymium iron boron rare earth permanent magnet material, and the polished neodymium iron boron rare earth permanent magnet material is taken away manually. Then turn off the hydraulic cylinder 603, and repeat the above operations to polish the next neodymium iron boron rare earth permanent magnet material.

[0040] Example 2

[0041] Based on Embodiment 1, referring to Figure 1 , Figure 2 and Figure 9 , it further includes a moving component 9. The moving component 9 includes a second driving wheel 901, a second driving belt 902, a second support rod 903, and a lead screw 904. Second support rods 903 are welded to the left and right sides of the upper part of the support frame 1. A lead screw 904 is rotatably connected between the lower parts of the two second support rods 903. The lead screw 904 is rotatably connected to the support frame 1. The lead screw 904 is located between the two guide rods 2. The upper part of the sliding frame 3 is threadedly connected to the lead screw 904. The forward and reverse rotation of the lead screw 904 can drive the sliding frame 3 to reciprocate left and right. Second driving wheels 901 are connected to both the left and right ends of the lead screw 904 and the fixed frame 602. The second driving wheels 901 are located outside the first driving wheel 804. A second driving belt 902 is wound around the two second driving wheels 901 on the left side, and a second driving belt 902 is also wound around the two second driving wheels 901 on the right side.

[0042] When people start the biaxial motor 802 and control the output shaft of the biaxial motor 802 to rotate forward and reverse intermittently, it can drive the fixed frame 602 to rotate forward and reverse intermittently. The fixed frame 602 can drive the lead screw 904 to rotate forward and reverse intermittently through the second driving wheel 901 and the second driving belt 902. The lead screw 904 can drive the sliding frame 3 to reciprocate left and right, thus replacing manual pushing of the sliding frame 3 left and right, saving time and effort. When people need to stop pushing the sliding frame 3, they can just turn off the biaxial motor 802.

[0043] Referring to Figure 1 , Figure 2 , Figure 10 and Figure 11 , it further includes a placing component 10. The placing component 10 includes a fixed block 1001, a rotating rod 1002, a torsion spring 1003, a connecting rod 1004, and a placing frame 1005. Fixed blocks 1001 are symmetrically welded to the left and right of the middle part of the rear side of the inner wall of the support frame 1. A rotating rod 1002 is rotatably connected between the two fixed blocks 1001. Connecting rods 1004 are connected to both the left and right sides of the rotating rod 1002. Torsion springs 1003 are wound around both the left and right sides of the rotating rod 1002. The two ends of the torsion spring 1003 are respectively connected to the fixed block 1001 and the connecting rod 1004. Placing frames 1005 are connected to the front sides of the connecting rods 1004. People can place the neodymium iron boron rare earth permanent magnet material between the tops of the two placing frames 1005 to play a positioning role, so that the neodymium iron boron rare earth permanent magnet material can be accurately located between the inner sides of the two clamping blocks 604.

[0044] When people need to perform surface treatment on neodymium iron boron rare earth permanent magnet materials, first place the neodymium iron boron rare earth permanent magnet materials between the tops of two placement frames 1005. At this time, the neodymium iron boron rare earth permanent magnet materials can be accurately located between the inner sides of two clamping blocks 604, so that the positioning of the neodymium iron boron rare earth permanent magnet materials can be carried out faster, saving time. After the neodymium iron boron rare earth permanent magnet materials are polished, they can be taken away manually.

[0045] Refer to Figure 1 、 Figure 2 、 Figure 12 and Figure 13 ,it also includes a pushing component 11. The pushing component 11 includes a support frame 1101, a push rod 1102, a second spring 1103 and a groove cylinder 1104. Support frames 1101 are welded to the left and right sides of the lower part of the support frame 1. The upper parts of the support frames 1101 are all connected with the push rod 1102 in a sliding manner. When the clamping blocks 604 move inward, they will contact the push rod 1102. Two second springs 1103 are connected between the push rod 1102 and the support frame 1101. Groove cylinders 1104 are connected to the left and right ends of the rotating rod 1002. The rear end of the push rod 1102 slides on the groove cylinder 1104. When the push rod 1102 moves inward, it can drive the groove cylinder 1104 to rotate, thereby driving the placement frame 1005 to rotate downward and separate from the neodymium iron boron rare earth permanent magnet materials, so that the placement frame 1005 can be prevented from being worn when the neodymium iron boron rare earth permanent magnet materials rotate.

[0046] When the clamping blocks 604 move inward, they will clamp the neodymium iron boron rare earth permanent magnet materials. At the same time, the clamping blocks 604 will contact the push rod 1102 and squeeze the push rod 1102 to move inward. The second spring 1103 is compressed. The push rod 1102 drives the groove cylinder 1104 to rotate, thereby driving the rotating rod 1002 to rotate. The rotating rod 1002 drives the connecting rod 1004 and the placement frame 1005 to rotate downward, and the torsion spring 1003 deforms, so that the placement frame 1005 is separated from the neodymium iron boron rare earth permanent magnet materials, so that the placement frame 1005 can be prevented from being worn when the neodymium iron boron rare earth permanent magnet materials rotate. When the clamping blocks 604 move outward and reset, the clamping blocks 604 will separate from the push rod 1102. The second spring 1103 returns to its original state and drives the push rod 1102 to move outward and reset. The push rod 1102 drives the groove cylinder 1104 to reverse, thereby driving the rotating rod 1002 to reverse. The rotating rod 1002 drives the connecting rod 1004 and the placement frame 1005 to rotate upward and reset. The torsion spring 1003 returns to its original state, so that the placement frame 1005 can support the bottom of the neodymium iron boron rare earth permanent magnet materials. The clamping blocks 604 will also loosen the polished neodymium iron boron rare earth permanent magnet materials, and then they can be taken away manually.

[0047] The above embodiments are only used to illustrate the technical concept and features of the present invention. The purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly, and it should not be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. A surface treatment device for neodymium iron boron rare earth permanent magnets, comprising a support frame, guide rods, a sliding frame, sliding rods and polishing blocks. Two guide rods are connected to the upper inner side of the support frame. A sliding frame is slidably connected between the right sides of the two guide rods. A sliding rod is slidably connected to the middle of the lower part of the sliding frame. The bottom end of the sliding rod is connected with a polishing block for polishing the neodymium iron boron rare earth permanent magnet material. It is characterized in that it further comprises a clamping assembly, a pressing-down assembly and a rotating assembly. A clamping assembly for clamping the neodymium iron boron rare earth permanent magnet material is arranged at the lower part of the support frame. A pressing-down assembly for driving the polishing block to move downward to contact the neodymium iron boron rare earth permanent magnet material is arranged at the upper part of the support frame. A rotating assembly for driving the neodymium iron boron rare earth permanent magnet material to rotate is arranged at the lower part of the support frame. The clamping assembly includes first support rods, fixed frames, hydraulic cylinders, clamping blocks and friction blocks. First support rods are connected to the left and right sides of the lower part of the support frame. Fixed frames are rotatably connected to the upper parts of the first support rods. Hydraulic cylinders are connected inside the fixed frames. The inner ends of the telescopic rods of the hydraulic cylinders are connected with clamping blocks. Friction blocks are connected to the inner sides of the clamping blocks. The pressing-down assembly includes wedge-shaped rods, a first spring and a sliding rod. Two wedge-shaped rods are connected to the upper inner side of the support frame. The wedge-shaped rods are located above the guide rods. A first spring is connected between the sliding rod and the sliding frame. A sliding rod is connected to the sliding rod. The sliding rod is slidably connected to the sliding frame. The top end of the sliding rod contacts the two wedge-shaped rods. The rotating assembly includes a protective shell, a biaxial motor, rotating shafts, first transmission wheels and a first transmission belt. A protective shell is connected to the middle of the lower part of the support frame. A biaxial motor is connected to the middle of the lower part of the support frame. The biaxial motor is located inside the protective shell. Rotating shafts are rotatably connected to the output shafts on the left and right sides of the biaxial motor. The rotating shafts are rotatably connected to the protective shell and the support frame. First transmission wheels are connected to the outer ends of the rotating shafts and the fixed frames. A first transmission belt is wound around the two left-side first transmission wheels. A first transmission belt is also wound around the two right-side first transmission wheels. It further comprises a moving assembly for driving the polishing block to reciprocate left and right. The moving assembly includes second transmission wheels, a second transmission belt, second support rods and a lead screw. Second support rods are connected to the left and right sides of the upper part of the support frame. A lead screw is rotatably connected between the lower parts of the two second support rods. The lead screw is rotatably connected to the support frame. The lead screw is located between the two guide rods. The upper part of the sliding frame is threadedly connected to the lead screw. Second transmission wheels are connected to the left and right ends of the lead screw and the fixed frames. The second transmission wheels are located outside the first transmission wheels. A second transmission belt is wound around the two left-side second transmission wheels. A second transmission belt is also wound around the two right-side second transmission wheels.

2. A surface treatment device for neodymium iron boron rare earth permanent magnets according to claim 1, It is characterized in that It further includes a placement component for positioning the neodymium iron boron rare earth permanent magnet material. The placement component includes a fixed block, a rotating rod, a torsion spring, a connecting rod, and a placement frame. Fixed blocks are symmetrically connected to the left and right in the middle of the rear side of the inner wall of the support frame. A rotating rod is rotatably connected between the two fixed blocks. Connecting rods are connected to both the left and right sides of the rotating rod. Torsion springs are wound around both the left and right sides of the rotating rod. The two ends of the torsion spring are respectively connected to the fixed block and the connecting rod. Placement frames are connected to the front sides of the connecting rods.

3. The surface treatment device for neodymium iron boron rare earth permanent magnet according to claim 2, characterized in that, it further includes a pushing component for driving the placement frame to rotate downward and separate from the neodymium iron boron rare earth permanent magnet material. The pushing component includes a support frame, a push rod, a second spring, and a groove cylinder. Support frames are connected to both the left and right sides of the lower part of the support frame. Push rods are slidably connected to the upper parts of the support frames. The clamping blocks will contact the push rods when moving inward. Two second springs are connected between the push rods and the support frames. Groove cylinders are connected to both the left and right ends of the rotating rod. The rear ends of the push rods slide on the groove cylinders.

4. The surface treatment device for neodymium iron boron rare earth permanent magnet according to claim 1, characterized in that, the height in the middle of the wedge-shaped rod is lower than the heights of the left and right parts.

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