A magnetorheological polishing device and method with adjustable magnetic field strength

Abstract

This invention relates to the technical field of magnetorheological polishing, and discloses a magnetorheological polishing device and method with adjustable magnetic field strength. The device includes a polishing worktable, a first mounting groove with multiple mounting rings distributed from top to bottom on its inner wall, and multiple magnetic sheets fixed at equal intervals on the inner wall of each mounting ring. A toothed ring is fixed on the outer wall of a chuck, and a gear is rotatably connected to the inner wall of a second mounting groove. This invention uses a limiting mechanism to compress a container, thereby compressing and raising / lowering the support assembly within the first mounting groove. This increases the number of mounting rings surrounding the container, and consequently, the number of magnetic sheets surrounding the container and inducing magnetofluidity with the magnetic needles within it. This allows for appropriate adjustment of the magnetic field strength during the magnetorheological polishing process. This design, by changing the number of magnetic sheets surrounding the container to adjust the magnetic field strength of the magnetorheological polishing device, not only improves the polishing quality of workpieces made of different materials but also reduces the manufacturing cost of the polishing device.

Description

Technical Field

[0001] This invention belongs to the technical field of magnetorheological polishing, and specifically relates to a magnetorheological polishing device and method with adjustable magnetic field strength. Background Technology

[0002] Magnetorheological polishing (MRP) is a cutting-edge optical processing technique that relies on the precise control of the rheological properties of magnetorheological fluids using a magnetic field to achieve precision machining, representing the next generation of optical processing development. Its core principle lies in cleverly utilizing the unique property of magnetorheological fluids forming viscoplastic Bingham fluids in a gradient magnetic field environment. By leveraging shear force, high-precision material removal is achieved, ultimately resulting in sub-nanometer-level surface roughness. Under the strong influence of the magnetic field, the magnetorheological fluid forms a flexible polishing mold with a directional chain structure. This polishing mold provides a reliable and efficient solution for the processing of high-precision optical components in many key fields such as aerospace communications and semiconductor devices.

[0003] With the rapid development of modern technology, the demand for polishing and grinding various high-end, high-precision parts is increasing. Magnetorheological polishing equipment, with its superior processing performance, has become the preferred tool for such operations. Therefore, the functions and structure of magnetorheological polishing equipment are continuously optimized and upgraded to better meet the production and processing needs of high-precision instruments.

[0004] However, existing magnetorheological polishing equipment still has the following drawbacks during use:

[0005] 1. Existing magnetorheological polishing equipment, during high-speed rotation based on the principle of magnetic field induction, can withstand varying degrees of impact from magnetic fields on parts used for different purposes due to differences in their materials. The impact strength of magnetorheological polishing equipment largely depends on the strength of the magnetic field. Ordinary magnetorheological polishing equipment does not have the function of adjusting the magnetic field strength, or the adjustment of the magnetic field strength requires the use of many complicated parts, which leads to a decrease in the polishing quality of existing magnetorheological polishing equipment. At the same time, for polishing equipment that uses many combined parts, its processing cost also increases significantly.

[0006] 2. Existing magnetorheological polishing equipment has significant shortcomings in positioning and fixing the container holding the parts to be polished. The equipment cannot provide stable and precise positioning and fixing of the container, which requires workers to perform a series of tedious positioning and fixing operations before each polishing operation. Even more challenging is that the container must be precisely placed at the center of the magnetic field to ensure the polishing effect. This series of complex operations not only consumes a lot of time but also greatly reduces the polishing efficiency of the equipment, making it difficult to meet the urgent needs of modern production for efficient and precise processing.

[0007] Therefore, it is necessary to invent a magnetorheological polishing device and method with adjustable magnetic field strength to solve the above problems. Summary of the Invention

[0008] To address the aforementioned problems, this invention provides a magnetorheological polishing device and method with adjustable magnetic field strength, thereby resolving the issues raised in the background section.

[0009] To achieve the above objectives, the present invention provides the following technical solution: a magnetorheological polishing device and method with adjustable magnetic field strength, comprising a polishing worktable, wherein a processing groove is provided on one side of the top of the polishing worktable, and a graded magnetorheological induction mechanism, a support component and a limiting mechanism are respectively installed on the top of the polishing worktable;

[0010] The graded magnetorheological induction mechanism includes a first mounting groove formed at the bottom of the inner wall of the processing tank. An annular groove is formed at the edge of the bottom of the inner wall of the first mounting groove. A second mounting groove is formed at one end of the inner wall of the polishing worktable, and the inner wall of the second mounting groove communicates with the inner wall of the annular groove. Multiple mounting rings are distributed from top to bottom on the inner wall of the first mounting groove. Multiple connecting blocks are fixedly arranged at equal distances between each mounting ring. Multiple magnetic sheets are fixedly arranged at equal distances on the inner wall of each mounting ring. A chuck is fixedly arranged at the bottom of one of the bottom mounting rings, and the chuck is rotatably connected to the inside of the annular groove. A toothed ring is fixedly arranged on the outer wall of the chuck. A gear is rotatably connected to the inner wall of the second mounting groove, and the outer wall of the gear meshes with the outer wall of the toothed ring. The inner wall of the polishing worktable is located at the second mounting groove. A third mounting slot is provided above the mounting slot. A motor is installed on the inner wall of the third mounting slot, and one end of the gear is fixedly connected to the output end of the motor. A connecting hole is provided at the middle position of the top of the chuck and at the middle position of the bottom of the inner wall of the first mounting slot, and the two connecting holes are interconnected. A limiting slide groove is provided at the middle position of one side of the inner wall of the processing slot. An electric push rod is fixedly installed at the bottom of the inner wall of the limiting slide groove. The limiting mechanism includes a lifting slider that is slidably connected in the inner wall of the limiting slide groove. A groove is provided at the top of the lifting slider. A connecting strip is rotatably connected to the inner wall of the groove. An extrusion plate is fixedly provided at one end of the connecting strip. A locking hole is provided on both sides of one end of the connecting strip. A telescopic groove is provided on both sides of the inner wall of the groove. A trapezoidal locking block is inserted and connected to the inner walls of the two telescopic grooves.

[0011] Preferably, the support assembly includes a support shaft passing through the inner walls of two connecting holes, a support plate fixedly provided on the top of the support shaft, and three limiting shafts equidistantly intersecting the inner wall of the support plate.

[0012] Preferably, one end of each of the three limiting shafts is fixedly provided with a hemispherical buckle, the outer wall of one end of each of the three limiting shafts is sleeved with a first spring, and the two ends of the three first springs are respectively fixedly connected to one side of the three hemispherical buckles and the inner wall of the support plate. The outer wall of the support shaft is sleeved with a second spring, and the two ends of the second spring are respectively fixedly connected to the bottom of the first mounting groove and the bottom of the support plate.

[0013] Preferably, each of the two trapezoidal blocks has a fixed shaft at both ends on one side, and the outer wall of one end of the four fixed shafts is respectively inserted and connected to the outer walls on both sides of the lifting slider. Each of the four fixed shafts has two connecting plates fixed at one end, and each of the four fixed shafts has a third spring sleeved on the outer wall. The two ends of the four third springs are respectively fixedly connected to one side of the two trapezoidal blocks and one side of the inner wall of the two telescopic grooves.

[0014] Preferably, a control panel is fixedly installed on one side of the polishing worktable, and the motor and electric push rod are electrically connected to an external power supply through the control panel.

[0015] The technical effects and advantages of this invention are as follows:

[0016] 1. This invention features a graded magnetorheological induction mechanism. A limiting mechanism compresses the container to compress the support assembly, which then moves up and down within the first mounting groove. During this movement, the number of mounting rings surrounding the container increases, and consequently, the number of magnetic sheets surrounding the container and inducing magnetorheological flux with the magnetic needles inside also increases. This allows for appropriate adjustment of the magnetic field strength during the magnetorheological polishing process. This design adjusts the magnetic field strength of the magnetorheological polishing equipment by changing the number of magnetic sheets surrounding the container. It has a simple structure, is easy to operate, and not only improves the polishing quality of workpieces made of different materials but also reduces the manufacturing cost of the polishing equipment.

[0017] 2. This invention, by setting up a support component and a limiting mechanism, uses a hemispherical buckle at the upper end of the support component and a limiting shaft to compress the first spring when the container is inserted into the support plate, thereby centering and fixing the container. Then, the extrusion plate on the limiting mechanism extrudes and fixes the top of the container. The lifting slider slides and rises and falls in the limiting groove via an electric push rod, causing the container to squeeze the support plate, compress the second spring, change the support height of the support plate on the container, thereby changing the depth of the container in the first mounting groove, changing the number of mounting rings and magnetic sheets wrapped, and thus changing the magnetic field strength. In this process, the design structure is simple and the operation steps are reduced, thereby improving the polishing efficiency of the polishing equipment.

[0018] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description, claims and drawings. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the entire invention;

[0021] Figure 2 This is a schematic diagram of the cross-section of the polishing worktable of the present invention;

[0022] Figure 3 This is a schematic diagram of the interior of the polishing workbench of the present invention;

[0023] Figure 4 This is a schematic diagram of the connection between the mounting ring and the toothed ring of the present invention;

[0024] Figure 5 This is a schematic diagram of the meshing of the toothed ring and the gear of the present invention;

[0025] Figure 6 This is a schematic diagram of the support component of the present invention;

[0026] Figure 7 This is a schematic diagram of the limiting mechanism of the present invention;

[0027] Figure 8 This is an appendix to the specification of this invention. Figure 7 An enlarged schematic diagram of point A in the middle.

[0028] In the diagram: 1. Polishing worktable; 2. Machining groove; 3. Graded magnetorheological induction mechanism; 301. First mounting groove; 302. Annular groove; 303. Second mounting groove; 304. Mounting ring; 305. Connecting block; 306. Magnetic sheet; 307. Chuck; 308. Gear ring; 309. Gear; 310. Third mounting groove; 311. Motor; 312. Connecting hole; 4. Support assembly; 401. Support shaft; 02. Support plate; 403. Limiting shaft; 404. Hemispherical buckle; 405. First spring; 406. Second spring; 5. Limiting groove; 6. Electric push rod; 7. Limiting mechanism; 701. Lifting slider; 702. Groove; 703. Connecting strip; 704. Extrusion plate; 705. Locking hole; 706. Telescopic groove; 707. Trapezoidal locking block; 708. Fixed shaft; 709. Connecting plate; 710. Third spring. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, 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.

[0030] This invention provides, for example Figure 1-8 The invention relates to a magnetorheological polishing device and method with adjustable magnetic field strength, comprising a polishing worktable 1, characterized in that: a processing groove 2 is provided on one side of the top of the polishing worktable 1, and a graded magnetorheological induction mechanism 3, a support component 4 and a limiting mechanism 7 are respectively installed on the top of the polishing worktable 1.

[0031] The graded magnetorheological induction mechanism 3 includes a first mounting groove 301 formed at the bottom of the inner wall of the processing groove 2. An annular groove 302 is formed at the edge of the bottom of the inner wall of the first mounting groove 301. A second mounting groove 303 is formed at one end of the inner wall of the polishing worktable 1, and the inner wall of the second mounting groove 303 communicates with the inner wall of the annular groove 302. Multiple mounting rings 304 are distributed from top to bottom on the inner wall of the first mounting groove 301. Multiple connecting blocks 305 are fixed at equal intervals between each mounting ring 304. Multiple magnetic sheets 306 are fixed at equal intervals on the inner wall of each mounting ring 304. A chuck 30 is fixed at the bottom of the bottommost mounting ring 304. 7. The chuck 307 is rotatably connected to the inside of the annular groove 302. A toothed ring 308 is fixedly provided on the outer wall of the chuck 307. A gear 309 is rotatably connected to the inner wall of the second mounting groove 303. The outer wall of the gear 309 meshes with the outer wall of the toothed ring 308. A third mounting groove 310 is provided on the inner wall of the polishing worktable 1 above the second mounting groove 303. A motor 311 is installed on the inner wall of the third mounting groove 310. One end of the gear 309 is fixedly connected to the output end of the motor 311. A connecting hole 312 is provided at the middle position of the top of the chuck 307 and at the middle position of the bottom of the inner wall of the first mounting groove 301. The two connecting holes 312 are interconnected.

[0032] In use, the container with the magnetic needle and protective fluid or cooling water is centered and supported by the support assembly 4. Then, the top of the container is squeezed by the limiting mechanism 7, which compresses the support assembly 4 and allows it to move up and down within the first mounting groove 301. During the lifting and lowering process, the mounting ring 304 with magnetic pieces 306 wraps around the outer edge of the container. At this time, the motor 311 in the third mounting groove 310 is started to drive the gear 309 to rotate, which in turn engages the gear ring 308 to rotate in the annular slot 302. This causes the chuck 307 and the multiple mounting rings 304 connected by multiple connecting blocks 305 to rotate together. During the rotation, the multiple magnetic pieces 306 wrapped around one side of the mounting ring 304 at the bottom of the container move along with the support assembly 4. 6. Continuously perform magnetic induction cutting around the container, thereby driving the magnetic needles inside the container to rotate at high speed. During the high-speed rotation, the workpiece inside is impacted and polished. As the container is continuously lowered by the support component 4 through the limiting mechanism 7 in the first mounting groove 301, the number of mounting rings 304 wrapped around the outside of the container increases, and the number of magnetic sheets 306 wrapped around the outside of the container and inducing magnetofluid with the magnetic needles inside also increases. This allows for appropriate adjustment of the magnetic field strength during the magnetorheological polishing process. This design adjusts the magnetic field strength of the magnetorheological polishing equipment by changing the number of magnetic sheets 306 wrapped around the outside of the container. It has a simple structure and is easy to operate. It not only improves the polishing quality of workpieces made of different materials, but also reduces the manufacturing cost of the polishing equipment.

[0033] Furthermore, the support assembly 4 includes a support shaft 401 that passes through the inner walls of the two connecting holes 312. A support plate 402 is fixedly provided on the top of the support shaft 401. Three limiting shafts 403 are equidistantly connected to the inner wall of the support plate 402. The top edge of the support plate 402 is protruding to facilitate the extension and retraction of the limiting shafts 403 on its side.

[0034] Each of the three limiting shafts 403 has a hemispherical buckle 404 fixedly attached to one end. A first spring 405 is fitted onto the outer wall of each end of the three limiting shafts 403. The two ends of the three first springs 405 are respectively fixedly connected to one side of the three hemispherical buckles 404 and the inner wall of the support plate 402. A second spring 406 is fitted onto the outer wall of the support shaft 401. The two ends of the second spring 406 are respectively fixedly connected to the bottom of the first mounting groove 301 and the bottom of the support plate 402. When the container is inserted into the support plate 402, the outer wall of the container's bottom will press against the top of the support plate 402. The three hemispherical buckles 404 of the container compress the first spring 405 together through the limiting shaft 403 after being squeezed, and then extend and retract at the outer edge of the container to squeeze the outer wall of the bottom of the container and fix it in the center. Then, under the pressure drop of the limiting mechanism 7, the container squeezes the support plate 402 and then extends and retracts in the connecting hole 312 through the support shaft 401 to squeeze the second spring 406, thereby changing the support height of the support assembly 4, changing the depth of the container placed in the first mounting groove 301, and finally changing the number of the wrapping mounting rings 304 and changing the magnetic field strength.

[0035] Furthermore, a limiting slide groove 5 is provided at the middle position of one side of the inner wall of the processing groove 2, and an electric push rod 6 is fixedly installed at the bottom of the inner wall of the limiting slide groove 5.

[0036] Furthermore, the limiting mechanism 7 includes a lifting slider 701 that is slidably connected to the inner wall of the limiting groove 5. The top of the lifting slider 701 is provided with a groove 702. The inner wall of the groove 702 is rotatably connected to a connecting strip 703. When the connecting strip 703 is rotated to a horizontal position, the center position of the extrusion plate 704 at one end is on the same axis as the center position of the first mounting groove 301 and the container.

[0037] One end of the connecting strip 703 is fixedly provided with a pressing plate 704. Both sides of one end of the connecting strip 703 are provided with locking holes 705. Both sides of the inner wall of the groove 702 are provided with telescopic grooves 706. Trapezoidal locking blocks 707 are inserted and connected to the inner walls of the two telescopic grooves 706. The locking blocks are set in a trapezoidal shape so that when the two sides of the connecting strip 703 press the two trapezoidal locking blocks 707, it is convenient for them to be pressed and expand within the telescopic grooves 706.

[0038] Two trapezoidal blocks 707 are each fixed with a fixed shaft 708 at both ends on one side. The outer walls of one end of the four fixed shafts 708 are respectively inserted and connected to the outer walls of both sides of the lifting slider 701. Two connecting plates 709 are fixedly installed at one end of the four fixed shafts 708. A third spring 710 is sleeved on the outer wall of one end of each of the four fixed shafts 708. The two ends of the four third springs 710 are respectively fixedly connected to one side of the two trapezoidal blocks 707 and one side of the inner wall of the two telescopic grooves 706. When the container is limited and squeezed, the connecting strip 703 at the upper end of the limiting mechanism 7 rotates in the groove 702 on the lifting slider 701, so that the squeezing disc 704 at one end of it squeezes the top of the container. At this time, the connecting... The trapezoidal locking blocks 707 on both sides of the connecting strip 703 are pressed together. The trapezoidal locking blocks 707 and the fixed shaft 708 compress the third spring 710, which then extends and retracts within the telescopic groove 706. Finally, the connecting strip 703 is locked into the locking holes 705 on both sides of the connecting strip 703, thus fixing the connecting strip 703. When the connection is locked, the connecting plates 709 on both sides are pulled to make the trapezoidal locking blocks 707 disengage from the locking holes 705, thereby releasing the fixation of the connecting strip 703. This, combined with the pressure drop of the limiting mechanism 7 on the container, and the central compression of the container by the three hemispherical buckles 404 on the top of the support component 4, allows the container to be quickly positioned during the magnetorheological polishing process without cumbersome operations, thus improving the polishing efficiency of the polishing equipment.

[0039] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A magnetorheological polishing device with adjustable magnetic field strength, comprising a polishing worktable (1), characterized in that: A processing groove (2) is provided on one side of the top of the polishing workbench (1). The top of the polishing workbench (1) is respectively equipped with a graded magnetorheological induction mechanism (3), a support component (4) and a limiting mechanism (7). The graded magnetorheological induction mechanism (3) includes a first mounting groove (301) at the bottom of the inner wall of the processing groove (2), an annular groove (302) at the edge of the bottom of the inner wall of the first mounting groove (301), a second mounting groove (303) at one end of the inner wall of the polishing worktable (1), and the inner wall of the second mounting groove (303) is connected to the inner wall of the annular groove (302). The inner wall of the first mounting groove (301) is provided with multiple mounting rings (304) from top to bottom, and multiple connecting blocks are fixed at equal distances between each mounting ring (304). 305), each of the mounting rings (304) has multiple magnetic sheets (306) fixedly arranged at equal intervals on its inner wall. A chuck (307) is fixedly arranged at the bottom of the bottom mounting ring (304), and the chuck (307) is rotatably connected to the inside of the annular groove (302). A toothed ring (308) is fixedly arranged on the outer wall of the chuck (307). A gear (309) is rotatably connected to the inner wall of the second mounting groove (303), and the outer wall of the gear (309) meshes with the outer wall of the toothed ring (308). The inner wall of the polishing worktable (1) is located in the second mounting groove (303). A third mounting groove (310) is provided above the chuck (307). A motor (311) is installed on the inner wall of the third mounting groove (310), and one end of the gear (309) is fixedly connected to the output end of the motor (311). A connecting hole (312) is provided at the middle position of the top of the chuck (307) and at the middle position of the bottom of the inner wall of the first mounting groove (301), and the two connecting holes (312) are interconnected. A limiting slide groove (5) is provided at the middle position of one side of the inner wall of the processing groove (2). An electric push rod (6) is fixedly installed at the bottom of the inner wall of the limiting slide groove (5). The positioning mechanism (7) includes a lifting slider (701) slidably connected to the inner wall of the limiting groove (5). The top of the lifting slider (701) is provided with a groove (702). The inner wall of the groove (702) is rotatably connected with a connecting strip (703). One end of the connecting strip (703) is fixedly provided with a pressing plate (704). Both sides of one end of the connecting strip (703) are provided with a locking hole (705). Both sides of the inner wall of the groove (702) are provided with a telescopic groove (706). The inner walls of the two telescopic grooves (706) are interlocked with trapezoidal locking blocks (707).

2. The magnetorheological polishing device with adjustable magnetic field strength according to claim 1, characterized in that: The support assembly (4) includes a support shaft (401) that passes through the inner walls of two connecting holes (312). A support plate (402) is fixedly provided on the top of the support shaft (401). Three limiting shafts (403) are interspersed at equal intervals on the inner wall of the support plate (402).

3. The magnetorheological polishing device with adjustable magnetic field strength according to claim 2, characterized in that: One end of each of the three limiting shafts (403) is fixedly provided with a hemispherical buckle (404), and the outer wall of one end of each of the three limiting shafts (403) is fitted with a first spring (405). The two ends of the three first springs (405) are respectively fixedly connected to one side of the three hemispherical buckles (404) and the inner wall of the support plate (402). The outer wall of the support shaft (401) is fitted with a second spring (406), and the two ends of the second spring (406) are respectively fixedly connected to the bottom of the first mounting groove (301) and the bottom of the support plate (402).

4. The magnetorheological polishing device with adjustable magnetic field strength according to claim 1, characterized in that: Two fixed shafts (708) are fixed at both ends of one side of the two trapezoidal blocks (707), and the outer walls of one end of the four fixed shafts (708) are respectively inserted and connected to the outer walls of both sides of the lifting slider (701). Two connecting plates (709) are fixed at one end of the four fixed shafts (708), and a third spring (710) is sleeved on the outer wall of one end of the four fixed shafts (708). The two ends of the four third springs (710) are respectively fixedly connected to one side of the two trapezoidal blocks (707) and one side of the inner wall of the two telescopic grooves (706).

5. A magnetorheological polishing device with adjustable magnetic field strength according to claim 1, characterized in that: A control panel is fixedly installed on one side of the polishing worktable (1), and the motor (311) and the electric push rod (6) are electrically connected to an external power supply through the control panel.

6. The method of using a magnetorheological polishing device with adjustable magnetic field strength according to claim 1, characterized in that, The method is as follows: Step 1: First, inject protective liquid or cooling water into the container with magnetic needles, then place the workpiece to be polished into the container, place the container in the processing tank (2), fix it with the support component (4), then rotate the connecting strip (703) at the upper end of the limiting mechanism (7) on the lifting slider (701), so that the extrusion plate (704) at one end of it is pressed against the top of the container, and the third spring (710) is compressed by the trapezoidal card block (707) and the fixed shaft (708) and then extends and retracts in the telescopic groove (706), and finally gets into the card holes (705) on both sides of the connecting strip (703) to fix the connecting strip (703); Step 2, then, with the support component (4), the upper and lower ends of the container are fixed and limited. When the container is inserted into the support plate (402), the outer wall of the bottom of the container will press the three hemispherical buckles (404) on the top of the support plate (402). After being compressed, the first spring (405) is compressed together through the limiting shaft (403), and then it stretches and extends at the outer edge of the container, pressing the outer wall of the bottom of the container to fix it in the center. Step 3: At this time, the bottom of the container is in the first mounting groove (301) and is wrapped by the mounting ring (304) above. Start the motor (311) in the third mounting groove (310) to drive the gear (309) to rotate, and then mesh with the gear ring (308) to rotate in the annular slot (302). This causes the chuck (307) and the multiple mounting rings (304) connected by multiple connecting blocks (305) above to rotate together. During the rotation, multiple magnetic sheets (306) wrapped around the mounting ring (304) at the bottom of the container continuously perform magnetic induction cutting around the container, thereby driving the magnetic needle inside the container to rotate at high speed. During the high-speed rotation, the workpiece inside is impacted and polished. Step four, finally, by continuously pressing down through the limiting mechanism (7), the container is continuously compressed on the support component (4) to descend, thereby increasing the number of mounting rings (304) wrapped around the outside of the container, and consequently increasing the number of magnetic sheets (306) wrapped around the outside of the container and inducing magnetofluidity with the magnetic needles inside, thus achieving appropriate adjustment of the magnetic field strength during the magnetorheological polishing process.

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