Magneto-rheological magnetic ball double-sided polishing device for medical dental torque wrench

Abstract

The invention discloses a magneto-rheological magnetic ball double-sided polishing device for a medical dental torque wrench, which is used for polishing the head plane of the medical dental torque wrench and comprises a polishing groove, a lower support frame and an upper support frame, the lower support frame and the upper support frame are arranged in the polishing groove, and a support part for supporting a polishing piece is arranged in the polishing groove. The upper supporting frame is located above the supporting part, an upper driving motor for driving the upper supporting frame to rotate around the axis of the upper supporting frame is connected to the upper supporting frame, a plurality of upper magnetic balls are arranged on the end face, facing the polishing piece, of the upper supporting frame, and the upper magnetic balls are arranged above the polishing piece at intervals; magnetorheological polishing liquid is arranged between the upper magnetic ball body and the polishing piece. The lower supporting frame is located below the polishing piece, and the structure of the lower supporting frame is similar to that of the upper supporting frame. The polishing device has the advantages of being better in polishing effect and higher in polishing efficiency.

Description

Technical Field

[0001] The present invention relates to a polishing device, and more particularly to a magnetorheological magnetic ball double-sided polishing device for a medical dental torque wrench. Background Art

[0002] In the dental field, there is a crucial tool - the dental torque wrench. It plays a key role in dental implant surgery, and its precise manufacturing process is an important factor in ensuring the success of the surgery. The dental implant wrench is an indispensable high-precision tool in dental implant surgery. Its main function is to precisely control the torque applied during the installation of the implant. During dental implant surgery, doctors rely on it to screw the implant into the alveolar bone with precise torque, thus greatly improving the success rate of the surgery.

[0003] Magnetorheological polishing technology is a method of ultra-precision machining that utilizes the rheological properties of magnetorheological polishing fluid in a magnetic field. It forms a flexible "small grinding head" from the magnetorheological fluid in a gradient magnetic field, and generates a shear force through the rapid relative movement with the workpiece to achieve the removal of the workpiece surface material. This technology has the characteristics of flexible polishing, strong controllability, wide application range, etc., and has been widely used in fields such as optics, semiconductors, medical devices, and aerospace. In the future, magnetorheological polishing technology will develop in the directions of technological innovation, intelligentization and automation, and green processing, providing strong support for the improvement of product quality and process improvement in more industries. The existing magnetorheological polishing machines simply rotate the workpiece in a groove filled with magnetorheological polishing fluid for polishing, and their polishing efficiency is low. Summary of the Invention

[0004] The purpose of the present invention is to provide a magnetorheological magnetic ball double-sided polishing device for a medical dental torque wrench, which can effectively solve the problem of low polishing efficiency of existing magnetorheological polishing machines.

[0005] To solve the above technical problems, the present invention is realized through the following technical solutions:

[0006] A magnetorheological magnetic ball double-sided polishing device for a medical dental torque wrench is used to polish the head plane of the medical dental torque wrench. The polishing device includes a polishing groove, a lower support frame and an upper support frame arranged in the polishing groove. A support part for supporting the medical dental torque wrench is provided in the polishing groove. The upper support frame is located above the support part. An upper driving motor for driving the upper support frame to rotate around its own axis is connected to the upper support frame. A plurality of upper magnetic spheres are provided on the end surface of the upper support frame facing the medical dental torque wrench. The upper magnetic spheres are arranged at intervals above the medical dental torque wrench. A magnetorheological polishing fluid is provided between the upper magnetic spheres and the medical dental torque wrench.

[0007] The lower support frame is located below the medical dental torque wrench. A lower driving motor for driving the lower support frame to rotate around its own axis is connected to the lower support frame. A plurality of lower magnetic spheres are provided on the end face of the lower support frame facing the medical dental torque wrench. The medical dental torque wrench is disposed above the lower magnetic spheres with a gap therebetween. A magnetorheological polishing fluid is provided between the lower magnetic spheres and the medical dental torque wrench.

[0008] In the above magnetorheological magnetic sphere double-sided polishing device for a medical dental torque wrench, the upper magnetic spheres are arranged to roll on the upper support frame. Making the upper magnetic spheres roll will apply a certain pressure to the upper surface of the medical dental torque wrench. This pressure causes the metal on the upper surface of the medical dental torque wrench to undergo plastic flow and fill into the low concave valleys on the upper surface of the medical dental torque wrench. In addition, during the rolling process, the upper magnetic spheres will generate frictional force on the medical dental torque wrench, thereby removing the minute protrusions on the upper surface of the medical dental torque wrench, so as to achieve a better polishing effect.

[0009] In the above magnetorheological magnetic sphere double-sided polishing device for a medical dental torque wrench, the upper support frame includes an upper support body and an upper retainer fixed to the bottom surface of the upper support body. A first spherical groove is formed on the bottom surface of the upper support body, and a first spherical through groove is formed on the upper retainer. The first spherical groove and the first spherical through groove form a first limiting groove. The upper magnetic spheres roll in the first limiting groove and a part of the upper magnetic spheres faces the medical dental torque wrench and protrudes from the first limiting groove. By the cooperation of the first spherical groove of the upper support body and the first spherical through groove of the upper retainer to form the first limiting groove, the height of the upper magnetic spheres is limited, and at the same time, it is ensured that a part of the upper magnetic spheres can protrude to receive external frictional force and roll.

[0010] In the above magnetorheological magnetic sphere double-sided polishing device for a medical dental torque wrench, the lower magnetic spheres are arranged to roll on the lower support frame. Making the lower magnetic spheres roll will apply a certain pressure to the lower surface of the medical dental torque wrench. This pressure causes the metal on the lower surface of the medical dental torque wrench to undergo plastic flow and fill into the low concave valleys on the lower surface of the medical dental torque wrench. In addition, during the rolling process, the lower magnetic spheres will generate frictional force on the medical dental torque wrench, thereby removing the minute protrusions on the lower surface of the medical dental torque wrench, so as to achieve a better polishing effect.

[0011] In the above-mentioned magnetorheological magnetic sphere double-sided polishing device for a medical dental torque wrench, the lower support frame includes a lower support body and a lower retainer fixed to the upper end surface of the lower support body. A second spherical groove is formed on the upper end surface of the lower support body, and a second spherical through groove is formed on the lower retainer. The second spherical groove and the second spherical through groove form a second limiting groove. The lower magnetic sphere rolls in the second limiting groove, and a part of the lower magnetic sphere faces the medical dental torque wrench and protrudes from the second limiting groove. The second spherical groove of the lower support body and the second spherical through groove of the lower retainer cooperate to form the second limiting groove, which limits the height of the lower magnetic sphere and ensures that a part of the lower magnetic sphere can protrude to receive external frictional force and roll.

[0012] In the above-mentioned magnetorheological magnetic sphere double-sided polishing device for a medical dental torque wrench, the upper driving motor is suspended on the numerical control machine tool, and the numerical control machine tool drives the upper support frame to move in a plane parallel to the upper end surface of the medical dental torque wrench. By controlling the movement of the upper support frame through the numerical control machine tool, more delicate and uniform polishing of the upper surface of the polishing machine can be achieved.

[0013] In the above-mentioned magnetorheological magnetic sphere double-sided polishing device for a medical dental torque wrench, the supporting part is a step protruding towards the center of the polishing groove in the polishing groove. When the medical dental torque wrench is placed on the protruding step, the stability of the polishing machine can be maintained, and a part of the medical dental torque wrench is in a suspended state, which is convenient for polishing the lower surface of the medical dental torque wrench.

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] By respectively arranging support frames with magnetic spheres above and below a medical dental torque wrench and cooperating with a magnetorheological polishing fluid, the problem of low polishing efficiency of the current magnetorheological polishing machine is solved. By arranging an upper support frame and a lower support frame inside the polishing device, and both being driven to rotate by their respective corresponding drive motors, the upper and lower surfaces of the flat medical dental torque wrench can be polished simultaneously. The magnetic spheres cooperate with the magnetorheological polishing fluid, enabling the magnetorheological polishing fluid near the magnetic spheres to become quasi-solid state. Then, when the support frame drives the magnetic spheres to rotate, the medical dental torque wrench is polished. Additionally, since a number of magnetic spheres are arranged on the support frame, a wedge-shaped space is formed between the magnetic spheres and the end surface of the support frame where the magnetic spheres are arranged. When the support frame drives the magnetic spheres to rotate, the flow velocity of the fluid layer of the magnetorheological polishing fluid close to the surface of the magnetic spheres in this wedge-shaped space significantly increases, while the flow velocity away from this layer gradually decreases, forming a shear flow. The shear flow and the pressure flow exerted by the medical dental torque wrench immersed in the magnetorheological polishing fluid on the fluid jointly stimulate a pressing effect in the fluid. Moreover, since the surface of the magnetic sphere is arc-shaped, the wedge-shaped space formed is narrower compared to a plane, intensifying the intensity of the movement of various substances in the magnetorheological polishing fluid, thereby achieving a better polishing effect and higher polishing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG. is a schematic structural diagram of the combination of the polishing tank, upper support frame and lower support frame of the present invention;

[0017] Figure 2 FIG. is a schematic structural diagram of the magnetorheological magnetic sphere double-sided polishing device for a medical dental torque wrench of the present invention;

[0018] Figure 3 FIG. is a schematic diagram when the upper magnetic sphere and the lower magnetic sphere of the present invention polish a medical dental torque wrench;

[0019] Figure 4 FIG. is a schematic structural diagram of the upper support frame of the present invention;

[0020] Figure 5 FIG. is a schematic structural diagram of the lower support frame of the present invention.

[0021] Reference numerals are:

[0022] Medical dental torque wrench 100, polishing groove 200, support part 210, upper support frame 300, upper support frame body 310, first spherical groove 311, upper cage 320, first spherical through groove 321, first limiting groove 330, lower support frame 400, lower support frame body 410, second spherical groove 411, lower cage 420, second spherical through groove 421, second limiting groove 430, upper driving motor 500, upper magnetic sphere 600, magnetorheological polishing fluid 700, lower driving motor 800, lower magnetic sphere 900, numerical control machine tool 1000. Detailed implementation manner

[0023] A magnetorheological magnetic ball double-sided polishing device for a medical dental torque wrench is used to polish the head plane of the medical dental torque wrench. The polishing device includes a polishing groove 200, a lower support frame 400 and an upper support frame 300 arranged in the polishing groove 200. A support part 210 for supporting the medical dental torque wrench 100 is arranged in the polishing groove 200. The upper support frame 300 is located above the support part 210. An upper driving motor 500 for driving the upper support frame 300 to rotate around its own axis is connected to the upper support frame 300. A plurality of upper magnetic spheres 600 are arranged on the end face of the upper support frame 300 facing the medical dental torque wrench 100. The upper magnetic spheres 600 are arranged at intervals above the medical dental torque wrench 100. A magnetorheological polishing fluid 700 is arranged between the upper magnetic spheres 600 and the medical dental torque wrench 100. The lower support frame 400 is located below the medical dental torque wrench 100. A lower driving motor 800 for driving the lower support frame 400 to rotate around its own axis is connected to the lower support frame 400. A plurality of lower magnetic spheres 900 are arranged on the end face of the lower support frame 400 facing the medical dental torque wrench 100. The medical dental torque wrench 100 is arranged at intervals above the lower magnetic spheres 900. A magnetorheological polishing fluid 700 is arranged between the lower magnetic spheres 900 and the medical dental torque wrench 100.

[0024] By respectively arranging support frames with magnetic spheres above and below the medical dental torque wrench 100 and cooperating with the magnetorheological polishing fluid 700, the problem of low polishing efficiency of the current magnetorheological polishing machine is solved. By arranging an upper support frame 300 and a lower support frame 400 inside the polishing device, and both are driven to rotate by their respective corresponding drive motors, the upper and lower two surfaces of the flat medical dental torque wrench 100 can be polished simultaneously. The magnetic spheres cooperate with the magnetorheological polishing fluid 700, which can turn the magnetorheological polishing fluid 700 near the magnetic spheres into a quasi-solid state. Then, when the support frame drives the magnetic spheres to rotate, the medical dental torque wrench 100 is polished. In addition, since a number of magnetic spheres are arranged on the support frame, a wedge-shaped space is formed between the magnetic spheres and the end surface of the support frame where the magnetic spheres are arranged. When the support frame drives the magnetic spheres to rotate, the flow velocity of the fluid layer of the magnetorheological polishing fluid 700 close to the surface of the magnetic spheres in this wedge-shaped space is significantly accelerated, and the flow velocity away from this layer gradually decreases, forming a shear flow. The shear flow and the pressure flow given by the medical dental torque wrench 100 immersed in the magnetorheological polishing fluid 700 act together in the fluid to stimulate a pressing effect. Moreover, since the surface of the magnetic sphere is arc-shaped, the wedge-shaped space formed compared with a plane is narrower, which intensifies the intensity of the movement of various substances in the magnetorheological polishing fluid 700, thereby achieving a better polishing effect and higher polishing efficiency.

[0025] Embodiments of the present invention will be described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

[0027] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0028] In the present invention, unless otherwise clearly specified and defined, terms such as "installation", "connection", "linkage", "fixation" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one; it may be a mechanical connection, an electrical connection, or capable of communicating with each other; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Refer to Figures 1 to 5 is an embodiment of the magnetorheological magnetic ball double-sided polishing device for a medical dental torque wrench of the present invention. The magnetorheological magnetic ball double-sided polishing device for a medical dental torque wrench is used to polish the head plane of the medical dental torque wrench, and includes a polishing groove 200 with an open top. A support portion 210 for supporting the medical dental torque wrench 100 is provided in the polishing groove 200. The support portion 210 may be a protrusion protruding from the inner side wall of the polishing groove 200 towards the center, or a step formed in the polishing groove 200 that converges towards the center. In this embodiment, the step form will be adopted as the support portion 210 of the medical dental torque wrench 100, not only because the step can be integrally formed with the polishing groove 200, but also because the step form can be more firm.

[0030] In the polishing groove 200, an upper support frame 300 is provided above the medical dental torque wrench 100. The upper support frame 300 is connected to an upper driving motor 500 that drives the upper support frame 300 to rotate around its own axis. A plurality of upper magnetic spheres 600 are provided on the bottom surface of the upper support frame 300. The upper magnetic spheres 600 protrude from the bottom surface of the upper support frame 300 towards the upper end surface of the medical dental torque wrench 100. A magnetorheological polishing fluid 700 is provided between the upper magnetic spheres 600 and the upper end surface of the medical dental torque wrench 100. Under the action of a magnetic field, the magnetorheological polishing fluid 700 wraps around the surface of the magnetic spheres 600 and contacts the upper end of the medical dental torque wrench 100. The magnetic spheres 600 roll on the surface of the medical dental torque wrench 100 to perform rolling pressure effect polishing. And a wedge-shaped space is formed between adjacent upper magnetic spheres 600 and the bottom end of the upper support frame 300. When the support frame drives the magnetic spheres to rotate, the flow velocity of the fluid layer of the magnetorheological polishing fluid 700 close to the surface of the magnetic spheres in this wedge-shaped space is significantly increased, and the flow velocity away from this layer gradually decreases, forming a shear flow. The shear flow and the pressure flow given by the medical dental torque wrench 100 immersed in the magnetorheological polishing fluid 700 act together in the fluid to stimulate a pressing effect, enhancing the polishing strength of the upper surface of the medical dental torque wrench 100, thereby improving the polishing effect and polishing efficiency of the upper surface of the medical dental torque wrench 100.

[0031] Inside the polishing tank 200, a lower support frame 400 is provided below the medical dental torque wrench 100. A lower driving motor 800 for driving the lower support frame 400 to rotate around its own axis is connected to the lower support frame 400. The lower driving motor 800 is located outside the polishing tank 200, and the motor shaft of the lower driving motor 800 penetrates into the polishing tank 200 from the bottom of the polishing tank 200 to drive the lower support frame 400 to rotate. A number of lower magnetic spheres 900 are provided on the upper end surface of the lower support frame 400. The lower magnetic spheres 900 protrude from the upper end surface of the lower support frame 400. A magnetorheological polishing fluid 700 is provided between the lower magnetic spheres 900 and the lower end surface of the medical dental torque wrench 100, so that when the lower magnetic spheres 900 rotate with the lower support frame 400, they also have the same polishing effect as the upper magnetic spheres 600 rotating with the upper support frame 300.

[0032] Furthermore, the upper magnetic spheres 600 are rotatably arranged on the upper support frame 300. Letting the upper magnetic spheres 600 roll will exert a certain pressure on the upper surface of the medical dental torque wrench 100. This pressure causes the metal on the upper surface of the medical dental torque wrench 100 to undergo plastic flow and fill into the low concave valleys on the upper surface of the medical dental torque wrench 100. In addition, during the rolling process of the upper magnetic spheres 600, a frictional force will be generated on the medical dental torque wrench 100, thereby removing the minute protrusions on the upper surface of the medical dental torque wrench 100, thus achieving a better polishing effect. And the lower magnetic spheres 900 can also be rotatably arranged on the lower support frame 400, playing the same role as the upper magnetic spheres 600.

[0033] Specifically, as Figure 4 shown, the upper support frame 300 includes an upper support body 310 and an upper cage 320 fixed to the bottom surface of the upper support body 310. This fixing method can adopt clamping, bonding or welding methods. The bottom surface of the upper support body 310 is provided with first spherical grooves 311 equal in number to the upper magnetic spheres 600. The first spherical grooves 311 are slightly larger in diameter than the upper magnetic spheres 600, and the first spherical grooves 311 do not exceed half a sphere. The upper cage 320 is provided with first spherical through grooves 321. The first spherical grooves 311 and the first spherical through grooves 321 form a first limiting groove 330. The first limiting groove 330 is in clearance fit with the upper magnetic spheres 600 to ensure that the upper magnetic spheres 600 can freely roll in the first limiting groove 330. The bottom of the upper magnetic spheres 600 is exposed from the first limiting groove 330 and faces the medical dental torque wrench 100. The part of the upper magnetic spheres 600 exposed from the first limiting groove 330 can directly contact the magnetorheological polishing fluid 700, ensuring that the magnetorheological polishing fluid 700 forms a quasi-solid state for polishing.

[0034] As Figure 5As described above, the lower support frame 400 includes a lower support body 410 and a lower cage 420 fixed to the upper end surface of the lower support body 410. The lower support body 410 and the lower cage 420 can also be fixedly connected by means of snap connection, bonding or welding. The upper end surface of the lower support body 410 is provided with second spherical grooves 411 equal in number to the lower magnetic spheres 900. The second spherical grooves 411 do not exceed half of a sphere, so that the lower magnetic spheres 900 can be easily placed in the second spherical grooves 411. The lower cage 420 is provided with second spherical through grooves 421. The second spherical grooves 411 and the second spherical through grooves 421 form a second limiting groove 430. The second limiting groove 430 is in clearance fit with the lower magnetic spheres 900 to ensure that the lower magnetic spheres 900 can roll in the second limiting groove 430. The lower magnetic spheres 900 protrude from the second limiting groove 430 and face the lower end surface of the medical dental torque wrench 100. The protruding parts of the lower magnetic spheres 900 can directly contact the magnetorheological polishing fluid 700, making the magnetorheological polishing fluid 700 close to them in a quasi-solid state form.

[0035] Furthermore, the magnetorheological magnetic ball double-sided polishing device for a medical dental torque wrench further includes a numerical control machine tool 1000. The upper driving motor 500 is suspended on the numerical control machine tool 1000. The numerical control machine tool 1000 drives the upper support frame 300 to move in a plane parallel to the upper end surface of the medical dental torque wrench 100. At this time, the diameter or length of the upper support frame 300 is smaller than the diameter or length of the polishing groove 200, so that the upper support frame 300 has a certain moving space in the polishing groove 200 to improve the polishing effect on the upper end surface of the medical dental torque wrench 100.

[0036] When the upper support frame 300 and the lower support frame 400 rotate, the upper magnetic sphere 600 and the lower magnetic sphere 900 will roll relative to the corresponding support frame. Since a number of magnetic spheres are provided on the support frame, a wedge-shaped space is formed between the magnetic sphere and the end face of the support frame where the magnetic sphere is provided. When the support frame rotates with the magnetic sphere, the flow rate of the fluid layer of the magnetorheological polishing fluid 700 close to the surface of the magnetic sphere in the wedge-shaped space significantly increases, and the flow rate away from this layer gradually decreases, forming a shear flow. The shear flow and the pressure flow given to the magnetorheological polishing fluid 700 by the medical dental torque wrench 100 immersed in the magnetorheological polishing fluid 700 act together to stimulate a pressure effect in the fluid. Under the magnetic force of the magnetic sphere, the ferromagnetic particles in the magnetorheological fluid will form magnetic force chains, which hold the polishing abrasive grains to polish the medical dental torque wrench 100. When the magnetorheological fluid does not undergo wedge extrusion, the magnetic particles in the magnetorheological fluid form microstructures such as through chains, branch chains, isolated chains, bundle chains or columns under the action of the magnetic field. During the wedge extrusion process, due to the rotation of the magnetic sphere, there is a wedge-shaped space, so there will be an extrusion effect, making the magnetic chain form a robust thick columnar structure, thereby increasing its yield stress. Due to the hydrodynamic pressure effect generated by the wedge extrusion, more abrasive grains flow into the wedge-shaped space, thus producing a better polishing effect on the medical dental torque wrench 100.

[0037] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present invention are covered by the patent scope of the present invention.

Claims

1. A magnetorheological magnetic ball double-sided polishing device for a medical dental torque wrench, used for polishing the head plane of the medical dental torque wrench, characterized in that: The polishing device comprises a polishing tank, a lower support frame and an upper support frame arranged in the polishing tank, wherein a support portion for supporting a medical dental torque wrench is arranged in the polishing tank, the upper support frame is located above the support portion, an upper driving motor for driving the upper support frame to rotate around its own axis is connected to the upper support frame, a plurality of upper magnetic spheres are arranged on the end surface of the upper support frame facing the medical dental torque wrench, a gap between the upper magnetic spheres is arranged above the medical dental torque wrench, and a magnetorheological polishing liquid is arranged between the upper magnetic spheres and the medical dental torque wrench; The lower support frame is located below the medical dental torque wrench, and is connected to a lower drive motor that drives it to rotate around its own axis. A plurality of lower magnetic spheres are provided on the end surface of the lower support frame facing the medical dental torque wrench, and a gap of the medical dental torque wrench is provided above the lower magnetic spheres. A magnetorheological polishing fluid is provided between the lower magnetic spheres and the medical dental torque wrench.

2. The magnetorheological magnetic ball double-sided polishing device for medical dental torque wrench according to claim 1, characterized in that: The upper magnetic sphere is rotatably arranged on the upper support frame.

3. The magnetorheological magnetic ball double-sided polishing device for medical dental torque wrench according to claim 2, characterized in that: The upper support frame includes an upper support body and an upper retaining frame fixed to the bottom surface of the upper support body, the bottom surface of the upper support body is provided with a first spherical groove, the upper retaining frame is provided with a first spherical through groove, the first spherical groove and the first spherical through groove constitute a first limiting groove, the upper magnetic sphere is rolled in the first limiting groove and a portion of the upper magnetic sphere is exposed from the first limiting groove toward the medical dental torque wrench.

4. The magnetorheological magnetic ball double-sided polishing device for medical dental torque wrench according to claim 1, characterized in that: The lower magnetic sphere is rollingly arranged on the lower supporting frame.

5. The magnetorheological magnetic ball double-sided polishing device for medical dental torque wrench according to claim 4, characterized in that: The lower support frame includes a lower support body and a lower retaining frame fixed to the upper end surface of the lower support body, the upper end surface of the lower support body is provided with a second spherical groove, the lower retaining frame is provided with a second spherical through groove, the second spherical groove and the second spherical through groove constitute a second limiting groove, the lower magnetic sphere is rollingly arranged in the second limiting groove and the lower magnetic sphere portion is exposed from the second limiting groove toward the medical dental torque wrench.

6. The magnetorheological magnetic ball double-sided polishing device for medical dental torque wrench according to claim 1, characterized in that: The upper driving motor is suspended on a numerically controlled machine tool, and the numerically controlled machine tool drives the upper supporting frame to move in a plane parallel to the upper end surface of the medical dental torque wrench.

7. The magnetorheological magnetic ball double-sided polishing device for medical dental torque wrench according to claim 1, characterized in that: The support portion is a step disposed in the polishing groove and protruding toward the center of the polishing groove.

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