False tooth polisher with length-adjustable polishing head

Abstract

The invention relates to the field of medical equipment, in particular to a false tooth polisher with a length-adjustable polishing head, which comprises a length adjusting structure, a switch, a shell, a power supply, a motor structure, a transmission shaft, a dust removal structure, a bearing, a clamping structure, a polishing head and an illumination structure, the length adjusting structure is arranged at the top of the false tooth polisher, the power source, the motor structure, the transmission shaft, the bearing, the clamping structure and the polishing head are sequentially arranged in the shell from top to bottom, the motor structure internally comprises a motor, adjusting parts and a moving part, the adjusting parts are symmetrically arranged in the motor structure, and the moving part is arranged in the shell. A sliding rail is arranged in the adjusting part, the moving part is connected with the sliding rail, and the sliding rail can drive the motor to move up and down through the moving part. According to the scheme, a user can indirectly adjust the adjusting part through the length adjusting structure, and then the length, extending out of the polisher, of the polishing head is influenced through the adjusting part.

Description

Technical Field

[0001] The invention relates to the field of medical equipment, and in particular to a denture grinder with an adjustable grinding head length. Background Art

[0002] In the process of denture manufacturing and finishing, grinders are a vital tool. As denture technology continues to develop, the market's requirements for grinders are getting higher and higher, especially in terms of precision, efficiency and user comfort.

[0003] For example, the prior art CN217572454U discloses a novel denture polisher, comprising a denture body and a fastening assembly arranged on one side of the denture body, wherein the fastening assembly comprises a base, a clamp and an annular threaded ring, the surface of the base is provided with the clamp, the surface of the clamp is threadedly connected with the threaded ring, and the inner surface of the clamp is fit-connected to the surface of the denture body.

[0004] Another typical prior art disclosed in CN219027010U is a fixed denture grinder, comprising: a grinder body, a rotating component is provided on one side of the surface of the grinder body; a connecting component, the connecting component is provided on one side of the rotating component; a dust suction component, the dust suction component is provided at one end of the connecting component, the dust suction component comprises a movable sleeve, a rotating part is provided at the bottom of the movable sleeve, and a dust suction hood is connected to the bottom of the rotating part.

[0005] Let's take a look at a fixed denture grinder disclosed in the prior art such as CN217122754U, which includes a base plate, the upper end surface of the base plate is fixedly connected to a support seat and a shell in sequence from front to back, the front part of the shell is inlaid with an observation window, the observation window is provided with an operating hole, one end of a telescopic protective cover is fixedly connected to the inner side of the operating hole, a pull rope passes through the inner side of the other end of the telescopic protective cover, a limit block is arranged on the outer side of the pull rope, one end of a first compression spring is fixedly connected to the inner side of the lower end surface of the limit block, the other end of the first compression spring is fixedly connected to one end of a sliding rod, the other end of the sliding rod passes through the upper part of the limit block and is fixedly connected to a push block, and the pull rope is slidably connected to the limit block and the sliding rod.

[0006] At present, the length of the grinding head of the existing denture grinder is generally fixed and cannot be adjusted according to actual conditions, which is inconvenient. In order to solve the common problems in the field, the present invention is made. Summary of the invention

[0007] The purpose of the present invention is to provide a denture grinder with an adjustable grinding head length in view of the existing deficiencies.

[0008] In order to overcome the shortcomings of the prior art, the present invention adopts the following technical solutions:

[0009] A denture grinder with an adjustable grinding head length, comprising a length adjustment structure, a switch, a shell, a power supply, a motor structure, a transmission shaft, a dust removal structure, a bearing, a clamping structure, a grinding head, and a lighting structure; the length adjustment structure is arranged on the top of the denture grinder, the switch is arranged on the side of the shell and connected to the power supply, the power supply, the motor structure, the transmission shaft, the bearing, the clamping structure, and the grinding head are sequentially arranged inside the shell from top to bottom, the motor structure includes a motor, an adjustment part, and a moving part, the adjustment part can be telescopically arranged on both sides of the motor structure, the moving part is connected to the adjustment part, and the adjustment part can drive the motor to move up and down through the moving part; the dust removal structure is installed between the motor structure and the bearing, and is used to absorb dust during the operation of the grinder, and the transmission shaft extends from the dust removal structure and is respectively connected to the motor structure and the bearing.

[0010] Furthermore, the length adjustment structure includes an adjustment column, a distance sensor, a signal transmitter, and a patch structure. The adjustment column can be installed on the top of the shell so as to move up and down. The patch structure is arranged on the side of the shell. The patch structure includes a patch. The patch and the adjustment column are interconnected through a transmission structure inside the shell and realize synchronous movement. The distance sensor is used to detect the distance between the adjustment column and itself. The signal transmitter is arranged on the top of the power supply and communicates with the distance sensor signal. The signal transmitter is used to send the distance signal detected by the distance sensor to the motor structure.

[0011] Furthermore, a signal receiver is provided inside the motor structure, and the signal receiver is used to receive the distance signal sent by the signal transmitter. The signal receiver communicates with the adjustment part and the motor signal, and the signal receiver is used to control the up and down movement of the slide rail inside the adjustment part and the rotation speed of the motor.

[0012] Furthermore, the moving part includes a top moving part and a bottom moving part, both ends of the bottom moving part are connected to the bottom end of the slide rail of the adjusting part, and both ends of the top moving part are connected to the top end of the slide rail arranged on the adjusting part, and the motor is arranged between the bottom moving part and the top moving part, and a hole is arranged in the center of the bottom moving part, and the motor is connected to the transmission shaft through the hole and drives the transmission shaft to rotate.

[0013] Furthermore, the shell includes a fence, a silicone pad and an annular transparent cover, the fence is arranged in the middle of the shell, the position of the fence corresponds to the position of the motor structure inside the shell, the fence includes more than two rectangular holes, and the rectangular holes are arranged around the shell, the silicone pad is arranged on the outside of the lower end of the shell, and the annular transparent cover is arranged at the bottom of the shell.

[0014] Furthermore, the dust removal structure includes a filter element, dust suction blades and a transmission sleeve rod, the filter element is detachably installed between the motor structure and the bearing, the filter element includes a plurality of dust suction holes, and the dust suction holes are used to absorb dust generated during the operation of the denture grinder. The transmission sleeve rod is fixedly sleeved on the transmission shaft, and the outer side wall of the transmission sleeve rod is evenly provided with dust suction blades.

[0015] Furthermore, the clamping structure includes a nut sleeve, a threaded structure and a bayonet, one end of the clamping structure is fixedly mounted on the grinding head, the bayonet is connected to the fixed end of the grinding head, the outer wall of the bayonet is provided with a threaded structure, and the nut sleeve is connected to the threaded structure. The grinding head can be fixed and removed by rotating the nut sleeve, the inner wall and the outer wall of the nut sleeve are both cylindrical, and the inner wall of the nut sleeve is provided with a spiral slideway matching the thread.

[0016] Furthermore, a sealing structure is provided at the bottom of the shell, the top of the sealing structure is connected to the silicone pad, the bottom of the sealing structure is provided with a hole, the grinding head passes through the hole, the sealing structure is an annular structure, the top radius of the sealing structure is larger than the bottom radius, and three LED lights are provided outside the sealing structure.

[0017] The beneficial effects achieved by the present invention are: 1. A length adjustment structure is provided and an adjustment part is provided inside the motor structure, and the user can indirectly adjust the adjustment part through the length adjustment structure, and then affect the length of the grinding head extending out of the grinder through the adjustment part, thereby playing a role in adjusting the length of the grinding head.

[0018] 2. By setting up the dust removal structure, it is beneficial to absorb dust during the working process of the grinder to improve the working field of vision. At the same time, by setting up a detachable filter element, the influence of dust on the inside of the grinder is reduced without affecting the purpose of dust removal.

[0019] 3. By setting a fence on the outer shell, it is helpful to improve the heat dissipation capacity of the grinder, avoid the motor's operating temperature from being too high, and help extend the service life of the motor. By setting an LED light on the sealing structure, it is helpful to see the denture details clearly at night or during the day when the light is poor, and perform fine grinding operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention can be further understood from the following description in conjunction with the accompanying drawings. The components in the figures are not necessarily drawn to scale, but the emphasis is placed on illustrating the principles of the embodiments. In different views, the same reference numerals designate the same parts.

[0021] Figure 1 It is a schematic diagram of the internal structure of the present invention.

[0022] Figure 2 This is a surface structure diagram of the present invention.

[0023] Figure 3 It is a structural schematic diagram of the motor structure of the present invention.

[0024] Figure 4 It is a structural schematic diagram of the clamping structure of the present invention.

[0025] Figure 5 It is a schematic structural diagram of the patch structure of the present invention.

[0026] Description of the drawings: adjusting column 01, distance sensor 02, housing 03, switch 031, fence 032, silicone pad 033, power supply 04, motor structure 05, adjusting part 051, motor 052, bottom moving part 053, top moving part 054, hanging part 06, transmission shaft 07, filter element 08, dust suction fan blade 09, bearing 10, clamping structure 11, nut sleeve 111, threaded structure 112, bayonet 113, fixing sleeve 12, mounting column 13, lighting structure 14, annular transparent cover 15, grinding head 16, sealing structure 17, patch structure 18, patch 181, sliding groove 182. DETAILED DESCRIPTION

[0027] The following is an explanation of the embodiments of the present invention through specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and the details in this specification can also be modified and changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. In addition, the drawings of the present invention are only simple schematic illustrations and are not depicted according to actual sizes. It is stated in advance. The following embodiments will further explain the relevant technical contents of the present invention in detail, but the disclosed contents are not intended to limit the scope of protection of the present invention.

[0028] Embodiment 1: According to Figure 1 , Figure 2 , Figure 3 and Figure 4, this embodiment provides a denture grinder with an adjustable grinding head length, comprising a length adjustment structure, a switch, a shell, a power supply, a motor structure, a transmission shaft, a dust removal structure, a bearing, a clamping structure, a grinding head, and a lighting structure; the length adjustment structure is arranged at the top of the denture grinder, the switch is arranged on the side of the shell and connected to the power supply, the power supply, the motor structure, the transmission shaft, the bearing, the clamping structure, and the grinding head are arranged in sequence from top to bottom inside the shell, the motor structure includes a motor, an adjustment part and a moving part, the adjustment part is symmetrically arranged inside the motor structure, a slide rail is arranged inside the adjustment part, the moving part is connected to the slide rail and the slide rail can drive the motor to move up and down through the moving part; the dust removal structure is installed between the motor structure and the bearing, and is used to absorb dust during the operation of the grinder, and the transmission shaft extends from the dust removal structure and is respectively connected to the motor structure and the bearing.

[0029] Specifically, a hanging portion is provided at the bottom of the motor structure, the hanging portion is connected to the shell, the hanging portion is used to support the motor structure, and the power supply and the motor are connected through electric wires.

[0030] Specifically, the motor structure is a cylindrical structure, and the adjusting portion includes a first adjusting portion and a second adjusting portion. The first adjusting portion and the second adjusting portion can be arranged at any two symmetrical positions inside the cylindrical structure with the axis as the symmetry axis.

[0031] Furthermore, the length adjustment structure includes an adjustment column, a distance sensor, a signal transmitter, and a patch structure. The adjustment column can be installed on the top of the shell so as to move up and down. The patch structure is arranged on the side of the shell. The patch structure includes a patch. The patch and the adjustment column are interconnected through a transmission structure inside the shell and realize synchronous movement. The transmission structure inside the shell can be a combination of gears of different sizes. The small gear is driven to rotate by the fingertips, thereby driving the large gear to rotate or linearly move the adjustment column over a large distance. The specific size design can be achieved according to the gear movement principle and the distance adjustment requirements, or a simple connection structure can be used so that the patch and the adjustment column have the same moving distance. The distance sensor is arranged on the top of the power supply and is located directly below the adjustment column. The distance sensor is used to detect the distance between the adjustment column and itself. The signal transmitter is arranged on the top of the power supply and communicates with the distance sensor signal. The signal transmitter is used to send the distance signal detected by the distance sensor to the motor structure.

[0032] Specifically, the patch structure further includes a sliding groove, and the patch can slide in the sliding groove.

[0033] Specifically, the patch is arranged on the wall of the sander housing so that it is easy for the thumb or index finger to touch it, preferably at the position of the silicone pad close to the sanding head (it is best to be able to modify it here). Figure 2 , a frame is made to show that it is 18). When the user slides the patch, the patch drives the transmission structure inside the shell to move, thereby driving the adjustment column to move up and down, thereby realizing the user's need to adjust the length of the grinding head.

[0034] Specifically, the distance sensor detects the distance between the adjustment column and itself by means of laser distance measurement.

[0035] Furthermore, a signal receiver is provided inside the motor structure, and the signal receiver is used to receive the distance signal sent by the signal transmitter. The signal receiver communicates with the adjustment part and the motor signal, and the signal receiver is used to control the up and down movement of the slide rail inside the adjustment part and the rotation speed of the motor.

[0036] Specifically, the signal receiver controls the slide rail inside the regulating part to move up and down by converting the received distance signal into the regulating signal of the regulating part according to the regulating algorithm.

[0037] Specifically, the distance sensor is provided with a plurality of distance sensing units, and the distance sensing units vertically send detection signals to the adjustment column and obtain the distance between the bottom of the adjustment column and the distance sensor by detecting the return time of the detection signals.

[0038] Specifically, the adjustment algorithm is transformed according to the following formula:

[0039]

[0040] Where v is the adjustment speed of the slide rail, V is the moving speed of the adjustment column, k is the speed transfer weight, and v max is the maximum adjustment speed allowed by the slide rail, and the direction of the adjustment speed of the slide rail is the same as the direction of the moving speed of the adjustment column. Figure 1 For example, when the adjustment column moves upward, the slide rail moves upward, thereby driving the grinding head to move upward, and when the adjustment column moves downward, the slide rail moves downward, thereby driving the grinding head to move downward; the speed transfer weight is determined by the type of the adjustment column, and different adjustment columns are provided with different patterns at the bottom, and the patterns are recessed into the adjustment column. Due to the existence of the patterns, different distance sensing units detect different times. By matching these time data with a pre-saved database, the distance sensor can obtain the type of the adjustment column and send its corresponding k value to the signal receiver, and the k value is between 0.1 and 1. The staff can change the accuracy of the distance adjustment by replacing different adjustment columns, thereby adapting to different processes.

[0041] Specifically, the rotation speed of the transmission shaft is adjusted according to the following formula:

[0042]

[0043] Among them, s is the rotation speed of the transmission shaft after adjustment, S is the rotation speed of the transmission shaft when it works normally, e is the natural constant, and v is the adjustment speed of the slide rail.

[0044] Specifically, through the above-mentioned adjustment algorithm, the adjustment speed of the slide rail can be reduced when the moving speed of the adjustment column is faster, thereby avoiding errors caused by excessive adjustment speed. Reducing the adjustment speed is beneficial to ensuring the stability of the motor during the adjustment process. After reducing the adjustment speed, the adjustment time needs to be extended to ensure that the moving distance of the slide rail and the adjustment column is the same. At the same time, by adjusting the rotation speed of the transmission shaft, it can be ensured that the transmission shaft rotates at a lower speed during the adjustment process of the adjustment part, thereby improving the stability during the adjustment process. The signal receiver controls the rotation speed of the transmission shaft by controlling the rotation speed of the motor.

[0045] Furthermore, the moving part includes a top moving part and a bottom moving part, both ends of the bottom moving part are connected to the bottom end of the slide rail of the adjusting part, and both ends of the top moving part are connected to the top end of the slide rail arranged on the adjusting part, and the motor is arranged between the bottom moving part and the top moving part, and a hole is arranged in the center of the bottom moving part, and the motor is connected to the transmission shaft through the hole and drives the transmission shaft to rotate.

[0046] Specifically, a hole is provided in the center of the bottom moving part for the transmission shaft to pass through.

[0047] Specifically, when the user slides the patch, the movement of the patch will drive the adjustment column to move, and the distance sensor will detect the change in the distance between the adjustment column and itself and send a corresponding signal to the signal receiver. After receiving the corresponding signal, the signal receiver controls the slide rail to move up and down, and the slide rail moves up and down, thereby driving the moving part to move up and down, and the moving part moves up and down, thereby driving the motor to move up and down, and the motor moves up and down, thereby driving the grinding head indirectly connected to it to move up and down. By moving the grinding head up and down, the distance that the grinding head extends out of the denture grinder can be controlled, thereby playing a role in adjusting the length of the grinding head.

[0048] Furthermore, the shell includes a fence, a silicone pad and an annular transparent cover, the fence is arranged in the middle of the shell, the position of the fence corresponds to the position of the motor structure inside the shell, the fence includes more than two rectangular holes, and the rectangular holes are arranged around the shell, the silicone pad is arranged on the outside of the lower end of the shell, and the annular transparent cover is arranged at the bottom of the shell.

[0049] Specifically, by setting the fence so that its position corresponds to the motor structure and is set around the outer shell, it is beneficial to dissipate heat from the motor during the use of the denture grinder and increase the service life of the motor; by setting the silicone pad, the comfort of the user when holding the grinder can be improved, and the damage to the grinder caused by improper placement or accidental dropping can be reduced. At the same time, a bearing structure is provided inside the grinder, which can effectively alleviate the impact of vibration on the grinder; by providing an annular transparent cover, the residue generated when the grinder is working can be prevented from flying everywhere.

[0050] Furthermore, the dust removal structure includes a filter element, dust suction blades and a transmission sleeve rod, the filter element is detachably installed between the motor structure and the bearing, the filter element includes a plurality of dust suction holes, and the dust suction holes are used to absorb dust generated during the operation of the denture grinder, the transmission sleeve rod is fixedly sleeved on the transmission shaft, and the outer side wall of the transmission sleeve rod is evenly provided with dust suction blades, preferably three groups of dust suction blades.

[0051] Specifically, when the transmission shaft rotates, the transmission sleeve and the dust suction blades on the transmission sleeve are driven to rotate, so that the dust generated by grinding is sucked into the inside of the grinder and adsorbed by the filter element.

[0052] Specifically, each set of dust suction blades consists of 3 dust suction blades, and the angle between two adjacent dust suction blades is 120°.

[0053] Furthermore, the clamping structure includes a nut sleeve, a threaded structure and a bayonet, one end of the clamping structure is fixedly mounted on the grinding head, the bayonet is connected to the fixed end of the grinding head, the outer wall of the bayonet is provided with a threaded structure, and the nut sleeve is connected to the threaded structure. The grinding head can be fixed and removed by rotating the nut sleeve, the inner wall and the outer wall of the nut sleeve are both cylindrical, and the inner wall of the nut sleeve is provided with a spiral slideway matching the thread.

[0054] Specifically, the bearing and the nut sleeve are connected via a truncated cone structure, and the bottom radius of the truncated cone structure is the same as the top radius of the nut sleeve.

[0055] Specifically, the grinding head can be fixed or removed by rotating the nut sleeve.

[0056] Preferably, the bayonet includes three clamping feet, and the clamping feet are used to clamp the fixed end of the grinding head.

[0057] Furthermore, a sealing structure is provided at the bottom of the shell, the top of the sealing structure is connected to the silicone pad, the bottom of the sealing structure is provided with a hole, the grinding head passes through the hole, the sealing structure is an annular structure, the top radius of the sealing structure is larger than the bottom radius, and three LED lights are provided outside the sealing structure.

[0058] Specifically, the LED light is provided to help see the details of the denture clearly at night or during the day when the lighting is poor, so as to perform fine grinding operations.

[0059] The beneficial effects of this solution are: 1. A length adjustment structure is set and an adjustment part is set inside the motor structure. The user can indirectly adjust the adjustment part through the length adjustment structure, and then affect the length of the grinding head extending out of the grinder through the adjustment part, thereby playing a role in adjusting the length of the grinding head.

[0060] 2. By setting up the dust removal structure, it is beneficial to absorb dust during the working process of the grinder to improve the working field of vision. At the same time, by setting up a detachable filter element, the influence of dust on the inside of the grinder is reduced without affecting the purpose of dust removal.

[0061] 3. By setting a fence on the outer shell, it is helpful to improve the heat dissipation capacity of the grinder, avoid the motor's operating temperature from being too high, and help extend the service life of the motor. By setting an LED light on the sealing structure, it is helpful to see the denture details clearly at night or during the day when the light is poor, and perform fine grinding operations.

[0062] Embodiment 2: This embodiment should be understood as including all the features of any one of the aforementioned embodiments, and is further improved thereon, in that a mounting post and a fixing sleeve are provided inside the sealing structure, the mounting post is installed on the inside of the sealing structure, four mounting posts are provided, the fixing sleeve is an annular cylindrical structure, the outer side of the fixing sleeve is connected to the four mounting posts, the fixing sleeve is suspended inside the sealing structure through the mounting posts, and the inner side of the fixing sleeve is in contact with the outer side of the nut sleeve.

[0063] The beneficial effects of this embodiment are as follows: by setting a fixed sleeve and a support rod, it is helpful to limit the position of the nut sleeve. Even if the position of the nut sleeve in the grinder changes after adjusting the length of the grinding port extending out of the grinder, its stability will not be reduced, thus avoiding the situation where the grinding port is offset during the grinding process.

[0064] The above disclosed contents are only preferred feasible embodiments of the present invention, and do not limit the protection scope of the present invention. Therefore, all equivalent technical changes made by using the contents of the present invention specification and drawings are included in the protection scope of the present invention. In addition, the elements therein can be updated with the development of technology. The above units are only examples. Those skilled in the art can use corresponding units according to different designs according to actual needs when implementing this solution.

Claims

1. A denture grinder with adjustable grinding head length, characterized in that: It includes a length adjustment structure, a switch, a shell, a power supply, a motor structure, a transmission shaft, a dust removal structure, a bearing, a clamping structure, a grinding head, and a lighting structure; the length adjustment structure is arranged on the top of the denture grinder, the switch is arranged on the side of the shell and connected to the power supply, the power supply, the motor structure, the transmission shaft, the bearing, the clamping structure, and the grinding head are arranged inside the shell in order from top to bottom, the motor structure includes a motor, an adjustment part, and a moving part, the adjustment part can be telescopically arranged on both sides of the motor structure, the moving part is connected to the adjustment part, and the adjustment part can drive the motor to move up and down through the moving part; the dust removal structure is installed between the motor structure and the bearing, and is used to absorb dust during the operation of the grinder, and the transmission shaft extends from the dust removal structure and is respectively connected to the motor structure and the bearing; The length adjustment structure includes an adjustment column, a distance sensor, a signal transmitter, and a patch structure. The adjustment column can be installed on the top of the shell so as to be movably moved up and down. The patch structure is arranged on the side of the shell. The patch structure includes a patch. The patch and the adjustment column are interconnected through a transmission structure inside the shell and realize synchronous movement. The distance sensor is used to detect the distance between the adjustment column and itself. The signal transmitter is arranged on the top of the power supply and communicates with the distance sensor signal. The signal transmitter is used to send the distance signal detected by the distance sensor to the motor structure.

2. A denture grinder with adjustable grinding head length according to claim 1, characterized in that: A signal receiver is arranged inside the motor structure, and the signal receiver is used to receive the distance signal sent by the signal transmitter. The signal receiver communicates with the adjustment part and the motor signal, and the signal receiver is used to control the up and down movement of the slide rail inside the adjustment part and the rotation speed of the motor.

3. The denture grinder with adjustable grinding head length according to claim 2, characterized in that: The moving part includes a top moving part and a bottom moving part, both ends of the bottom moving part are connected to the bottom end of the slide rail of the adjusting part, and both ends of the top moving part are connected to the top end of the slide rail arranged on the adjusting part. The motor is arranged between the bottom moving part and the top moving part, and a hole is arranged in the center of the bottom moving part. The motor is connected to the transmission shaft through the hole and drives the transmission shaft to rotate.

4. The denture grinder with adjustable grinding head length according to claim 3, characterized in that: The shell includes a fence, a silicone pad and an annular transparent cover. The fence is arranged in the middle of the shell. The position of the fence corresponds to the position of the motor structure inside the shell. The fence includes more than two rectangular holes, and the rectangular holes are arranged around the shell. The silicone pad is arranged on the outer side of the lower end of the shell, and the annular transparent cover is arranged at the bottom of the shell.

5. The denture grinder with adjustable grinding head length according to claim 4, characterized in that: The dust removal structure includes a filter element, dust suction blades and a transmission sleeve rod. The filter element is detachably installed between the motor structure and the bearing. The filter element includes a plurality of dust suction holes, which are used to absorb dust generated during the operation of the denture grinder. The transmission sleeve rod is fixedly sleeved on the transmission shaft, and the outer side wall of the transmission sleeve rod is evenly provided with dust suction blades.

6. The denture grinder with adjustable grinding head length according to claim 5, characterized in that: The clamping structure includes a nut sleeve, a threaded structure and a bayonet. The grinding head is fixedly installed at one end of the clamping structure, the bayonet is connected to the fixed end of the grinding head, the outer wall of the bayonet is provided with a threaded structure, and the nut sleeve is connected to the threaded structure; the inner wall and the outer wall of the nut sleeve are both cylindrical, and the inner wall of the nut sleeve is provided with a spiral slide matching the thread.

7. A denture grinder with adjustable grinding head length according to claim 6, characterized in that: A sealing structure is provided at the bottom of the shell, the top of the sealing structure is connected to the silicone pad, the bottom of the sealing structure is provided with a hole, the grinding head passes through the hole, the sealing structure is an annular structure, the top radius of the sealing structure is larger than the bottom radius, and three LED lights are provided outside the sealing structure.

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