Surface treatment device for dental restoration

Abstract

The invention relates to the technical field of dental restoration surface treatment, and discloses a dental restoration surface treatment device which comprises a device main body and a dust collection plate, and the device main body comprises a grinding table, a loading frame, a movable frame and a controller; and the dust collection plate grinding unit comprises multiple sets of bearing seats arranged in the dust collection plate movable frame, the interiors of the dust collection plate bearing seats are rotationally connected with rotating shafts through bearings, and grinding heads are installed at the ends, away from the bearing seats, of the rotating shafts. The floating unit drives the movable frame to float up and down in a reciprocating mode, so that the polishing head forms a composite polishing track of rotation and up-down floating, the polishing contact area is increased, and machining dead angles are effectively eliminated; and meanwhile, for polishing the outer side of the prosthesis, the rotary unit drives the workpiece to swing in a reciprocating mode with the boundaries of the polishing heads on the two sides as limiting points, it is ensured that all the areas of the outer side of the prosthesis can make full contact with the polishing heads rotating synchronously, and the problem that local polishing is excessive or insufficient is solved.

Description

Technical Field

[0001] This invention relates to the field of dental prosthesis surface treatment technology, and more specifically, to a dental prosthesis surface treatment device. Background Technology

[0002] Dental prostheses are artificial substitutes used to repair damaged or missing teeth or maxillofacial tissues in the oral cavity, restoring their shape, function, and aesthetics. Common types include porcelain crowns, all-ceramic bridges, and resin inlays. The surface smoothness of dental prostheses directly affects the restorative effect and wearing comfort; therefore, surface polishing is one of the key processes in prosthesis fabrication. Polishing removes burrs and scratches from the surface of the prosthesis, improving surface smoothness and ensuring the fit between the prosthesis and oral tissues.

[0003] Dental prostheses come in a variety of types and sizes, and the grinding requirements for their inner and outer surfaces vary. However, most existing grinding devices have fixed grinding heads, which not only makes it difficult for the same device to grind both the inner and outer surfaces of the prosthesis, but also makes it impossible to adapt to grinding parts of different sizes. If prostheses of different specifications or different grinding surfaces need to be processed, special grinding fixtures need to be changed, which not only significantly reduces grinding efficiency, but also increases equipment purchase and maintenance costs, making it difficult to meet the processing needs of prostheses of multiple specifications. Summary of the Invention

[0004] This invention provides a surface treatment device for dental prostheses, which solves the technical problem in related technologies that the same equipment is difficult to polish both the inner and outer sides of the prosthesis at the same time, and cannot be adapted to polishing parts of different sizes. If prostheses of different specifications or different polishing surfaces need to be processed, special polishing tools need to be replaced.

[0005] This invention provides a surface treatment device for dental prostheses, used for surface polishing of dental prostheses, comprising: The main body of the device includes a grinding table, a loading frame, a movable frame, and a controller. The loading frame is mounted on the grinding table, and the movable frame is located on one side of the loading frame. A floating unit is disposed between the loading frame and the movable frame, and the floating unit controls the movable frame to float up and down; The grinding unit includes multiple sets of bearing seats disposed inside the movable frame. The bearing seats are rotatably connected to a rotating shaft through bearings. A grinding head is installed at the end of the rotating shaft away from the bearing seat. A gear disk is installed on each set of rotating shafts. The three sets of gear disks are covered with a rack belt. A second servo motor is installed on the movable frame, and the output shaft of the second servo motor is fixedly connected to one of the sets of rotating shafts. The dust extraction unit, located on the polishing table, is used to remove debris generated during the surface polishing of dental prostheses.

[0006] As a further optimization of the present invention, the floating unit includes a first servo motor mounted on the loading frame, the output shaft of the first servo motor passing through the loading frame and having a first gear mounted thereon, and a rack plate meshing with the first gear, the rack plate being fixedly connected to the movable frame.

[0007] As a further optimization of the present invention, adjustment slots are provided on both sides of the interior of the movable frame, and adjustment sleeves are slidably connected inside the adjustment slots. The adjustment sleeves are fixedly connected to two sets of bearing seats away from the second servo motor. Third cylinders are also installed on both sides of the movable frame, and the extension and retraction ends of the third cylinders are fixedly connected to the bearing seats respectively.

[0008] As a further optimization of the present invention, the movable frame is provided with an adjusting roller shaft, and a sleeve is connected to the adjusting roller shaft by a bearing. The adjusting roller shaft is located inside the rack belt. Several sets of tooth blocks are provided on the outside of the sleeve, and the tooth blocks are meshed with the rack belt. A fourth cylinder is installed on the movable frame, and the telescopic end of the fourth cylinder is fixedly connected to the adjusting roller shaft.

[0009] As a further optimization of the present invention, the dust collection unit includes a dust collection plate installed on a grinding table, the dust collection plate having a plurality of dust collection holes, a cover plate installed inside the grinding table, and a first dust collection pipe and a second dust collection pipe installed on the cover plate.

[0010] As a further optimization of the present invention, a dust removal space is formed between the dust removal plate and the cover plate, and is connected to an external dust removal device through the first dust removal pipe and the second dust removal pipe, so that a negative pressure is formed in the dust removal space, and the debris generated by external grinding is cleaned through the dust removal hole.

[0011] As a further optimization of the present invention, a fixing unit is provided on the dust collection plate. The fixing unit includes a clamping platform disposed on the dust collection plate. A rotating unit is provided between the dust collection plate and the clamping platform. A connecting shaft is connected to the clamping platform by a bearing, and a clamping plate is installed on the connecting shaft. A first cylinder is installed on the clamping platform, and the telescopic end of the first cylinder passes through the clamping platform and contacts the outer surface of the clamping plate.

[0012] As a further optimization of the present invention, the opening of the card plate is configured in a C-shape, and a groove is provided at the edge of the opening of the card plate.

[0013] As a further optimization of the present invention, a torsion spring is provided on the connecting shaft, one end of the torsion spring is fixedly connected to the clamping platform, and the other end of the torsion spring is fixedly connected to the clamping plate.

[0014] As a further optimization of the present invention, a support plate is installed at one end of the clamping platform near the card plate, and the support plate is located directly below the card plate.

[0015] The beneficial effects of this invention are as follows: 1. This invention uses a floating unit to drive the movable frame to float up and down repeatedly, causing the grinding head to form a composite grinding trajectory of rotation and up-and-down floating. Compared with the existing single rotary grinding, this increases the grinding contact area, effectively eliminates processing dead corners, and significantly improves grinding efficiency. At the same time, for grinding the outside of the restoration, the rotary unit drives the workpiece to swing back and forth around the boundaries of the grinding heads on both sides, ensuring that all areas on the outside of the restoration can fully contact the synchronously rotating grinding head, avoiding the problem of over- or under-grinding in some areas, and greatly improving the grinding uniformity and surface quality of the restoration.

[0016] 2. This invention uses a third cylinder to drive the support seat to slide along the adjustment groove, which can flexibly adjust the spacing of the three grinding heads. It can adapt to the grinding needs of the inner or outer sides of different types and sizes of restorations without changing the tooling. At the same time, the first servo motor drives the gear and rack meshing transmission, which can precisely adjust the height of the grinding unit to adapt to the grinding height requirements of restorations of different sizes. This greatly improves the versatility of the device, reduces the procurement and maintenance costs of special tooling, and simplifies the operation process. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ; Figure 3 This is a three-dimensional structural diagram of the floating unit and the polishing unit of the present invention; Figure 4 This is an exploded three-dimensional structural diagram of the floating unit and the grinding unit of the present invention; Figure 5 This is the invention Figure 4 Enlarged view of the structure at point A in the middle; Figure 6 This is a schematic diagram of the grinding state structure of the present invention; Figure 7 This is a three-dimensional cross-sectional structural schematic diagram of the present invention; Figure 8 This is a three-dimensional structural diagram of the fixed unit and the rotating unit of the present invention; Figure 9 This is a schematic diagram of the fixed unit structure of the present invention.

[0018] In the diagram: 100, main body of the device; 110, grinding table; 120, loading frame; 130, movable frame; 140, controller; 200, floating unit; 210, first servo motor; 220, first gear; 230, rack plate; 240, guide rail; 250, guide sleeve; 300, grinding unit; 310, bearing seat; 320, rotating shaft; 330, grinding head; 340, gear disk; 350, rack belt; 360, second servo motor; 370, adjusting groove; 380, adjusting sleeve; 390, adjusting roller shaft; 400, dust extraction device. Unit; 410, suction plate; 420, suction hole; 430, cover plate; 440, first suction pipe; 450, second suction pipe; 460, guide plate; 500, fixing unit; 510, clamping platform; 520, connecting shaft; 530, clamping plate; 540, groove; 550, support plate; 560, first cylinder; 570, second cylinder; 600, rotary unit; 610, bearing gear ring; 620, second gear; 630, third servo motor; 700, third cylinder; 800, fourth cylinder; 900, dental prosthesis grinding part. Detailed Implementation

[0019] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0020] According to the appendix Figure 1 Appendix Figure 2 and attached Figure 3 As shown, a dental prosthesis surface treatment device is used to perform surface polishing treatment on a dental prosthesis polishing part 900. The device includes a main body 100, which includes a polishing table 110, a loading frame 120, a movable frame 130, and a controller 140. The loading frame 120 is installed on the polishing table 110, and the movable frame 130 is disposed on one side of the loading frame 120.

[0021] According to the appendix Figure 3 and attached Figure 4 As shown, the floating unit 200 is disposed between the loading frame 120 and the movable frame 130, and the floating unit 200 controls the movable frame 130 to float up and down.

[0022] The floating unit 200 includes a first servo motor 210 mounted on the loading frame 120. The output shaft of the first servo motor 210 passes through the loading frame 120 and is equipped with a first gear 220. A rack plate 230 is meshed on the first gear 220 and is fixedly connected to the movable frame 130.

[0023] During the grinding process, the first servo motor 210 of the floating unit 200 is controlled to rotate forward and backward, causing the first gear 220 to control the rack plate 230 to continuously oscillate back and forth, and controlling the movable frame 130 to move up and down, so that it can float up and down during grinding, improving grinding efficiency. In particular, by rotating the first servo motor 210, the first gear 220 and the rack plate 230 are engaged and connected, and the height of the grinding unit 300 can also be adjusted.

[0024] Specifically, guide rails 240 are installed on both sides of the loading frame 120, and guide sleeves 250 are slidably connected to the outside of the guide rails 240. The guide sleeves 250 are fixedly connected to the movable frame 130.

[0025] According to the appendix Figure 4 Appendix Figure 5 and attached Figure 6 As shown, the grinding unit 300 includes multiple sets of bearing seats 310 disposed inside the movable frame 130. The bearing seats 310 are rotatably connected to the rotating shafts 320 via bearings. A grinding head 330 is installed at the end of the rotating shafts 320 away from the bearing seats 310. A gear disk 340 is installed on each set of rotating shafts 320. The three sets of gear disks 340 are covered by a rack belt 350. A second servo motor 360 is installed on the movable frame 130, and the output shaft of the second servo motor 360 is fixedly connected to one of the sets of rotating shafts 320.

[0026] According to the appendix Figure 5 As shown, the movable frame 130 has adjustment slots 370 on both sides inside, and adjustment sleeves 380 are slidably connected inside the adjustment slots 370. The adjustment sleeves 380 are fixedly connected to two sets of bearing seats 310 away from the second servo motor 360, and the set of bearing seats 310 close to the second servo motor 360 is fixedly connected to the movable frame 130. A third cylinder 700 is also installed on both sides of the movable frame 130, and the telescopic ends of the third cylinder 700 are fixedly connected to the bearing seats 310 respectively. The bearing seats 310 are driven to move in the adjustment slots 370 by the third cylinder 700, thereby adjusting the distance between the multiple grinding heads 330, which facilitates the grinding of the outer and inner sides of the dental prosthesis grinding parts 900.

[0027] It should be noted that when grinding the outer side of the dental prosthesis grinding part 900, the third cylinder 700 drives the bearing seat 310 to move within the adjustment groove 370, adjusting the position of the three grinding heads 330 so that the three grinding heads 330 are adapted to the size of the outer side of the dental prosthesis grinding part 900. Then, the grinding unit 300 grinds the outer side of the dental prosthesis grinding part 900.

[0028] When grinding the inner side of the dental prosthesis grinding part 900, the third cylinder 700 drives the carrier 310 to move within the adjustment groove 370, adjusting the position of the three grinding heads 330 so that the three grinding heads 330 are adapted to the size of the inner side of the dental prosthesis grinding part 900. Then, the grinding unit 300 grinds the inner side of the dental prosthesis grinding part 900.

[0029] According to the appendix Figure 5 As shown, an adjusting roller shaft 390 is provided on the movable frame 130, and a sleeve is connected to the adjusting roller shaft 390 by a bearing. The adjusting roller shaft 390 is located inside the rack belt 350. Several sets of toothed blocks are provided on the outside of the sleeve, and the toothed blocks are meshed with the rack belt 350. A fourth cylinder 800 is installed on the movable frame 130, and the telescopic end of the fourth cylinder 800 is fixedly connected to the adjusting roller shaft 390. The adjusting roller shaft 390 is moved by the fourth cylinder 800, which facilitates the adjustment of the tension of the rack belt 350, so that the three sets of grinding heads 330 can still work normally when the positions of the three sets of rotating shafts 320 are adjusted.

[0030] According to the appendix Figure 7 As shown, the dust collection unit 400 is mounted on the polishing table 110 and is used to remove debris generated during the surface polishing of the dental prosthesis polishing part 900.

[0031] Specifically, the dust collection unit 400 includes a dust collection plate 410 mounted on a sanding table 110. The dust collection plate 410 has several dust collection holes 420. A cover plate 430 is installed inside the sanding table 110, and a first dust collection pipe 440 and a second dust collection pipe 450 are installed on the cover plate 430. Both the first dust collection pipe 440 and the second dust collection pipe 450 extend through the sanding table 110 to the outer surface of the sanding table 110. A dust removal space is formed between the dust collection plate 410 and the cover plate 430. The first dust collection pipe 440 and the second dust collection pipe 450 are connected to an external dust collection device, so that a negative pressure is formed in the dust removal space, and the dust debris generated by external sanding is cleaned through the dust collection holes 420.

[0032] Furthermore, both sides of the dust collection plate 410 are equipped with guide plates 460, and the guide plates 460 are set at an angle. The setting of the guide plates 460 facilitates the collection of debris.

[0033] According to the appendix Figure 8 and attached Figure 9 As shown, a fixing unit 500 is provided on the dust collection plate 410. The fixing unit 500 includes a clamping platform 510 provided on the dust collection plate 410. A connecting shaft 520 is connected to the clamping platform 510 by a bearing, and a clamping plate 530 is installed on the connecting shaft 520. The opening of the clamping plate 530 is C-shaped, and a groove 540 is provided at the edge of the opening of the clamping plate 530. A torsion spring is provided on the connecting shaft 520. One end of the torsion spring is fixedly connected to the clamping platform 510, and the other end of the torsion spring is fixedly connected to the clamping plate 530. A first cylinder 560 is installed on the clamping platform 510, and the telescopic end of the first cylinder 560 passes through the clamping platform 510 and contacts the outer surface of the clamping plate 530.

[0034] Specifically, a support plate 550 is installed at one end of the clamping platform 510 near the clamping plate 530, and the support plate 550 is located directly below the clamping plate 530. Through the setting of the clamping plate 530 and the groove 540, the dental prosthesis polishing part 900 can be clamped and fixed. The groove 540 can adapt to the edge contour of the dental prosthesis polishing part 900, so that the dental prosthesis polishing part 900 can be firmly locked between the support plate 550 and the clamping plate 530, thereby facilitating the polishing of the dental prosthesis polishing part 900.

[0035] Furthermore, the card plate 530 is provided with an extension section near the telescopic end of the first cylinder 560, which facilitates the contact between the telescopic end of the first cylinder 560 and the extension section, thereby improving stability.

[0036] It should be noted that a second cylinder 570 is provided below the clamping platform 510, and the telescopic end of the second cylinder 570 is fixedly connected to the clamping platform 510.

[0037] According to the appendix Figure 8 As shown, a rotary unit 600 is provided between the suction plate 410 and the clamping platform 510. The rotary unit 600 includes a bearing gear ring 610 connected to the suction plate 410 by a bearing. The bearing gear ring 610 is fixedly connected to the second cylinder 570. A second gear 620 is meshed on the bearing gear ring 610. A third servo motor 630 is mounted on the suction plate 410, and the output shaft of the third servo motor 630 is fixedly connected to the second gear 620. By rotating the third servo motor 630, the bearing gear ring 610 and the second gear 620 are meshed, driving the fixed unit 500 to rotate. By initially setting the third servo motor 630, when processing the outer side of the dental prosthesis grinding part 900, the rotary unit 600 can reciprocate between the boundary positions of the two grinding heads 330 as the limit points, and grind the outer side of the dental prosthesis grinding part 900.

[0038] Specifically, the controller 140 sets the initial parameters of the third servo motor 630, inputs the angle threshold corresponding to the boundary position of the two grinding heads 330, that is, the effective range of grinding on the outside of the repair body, and sets it as the forward and reverse limits of the servo motor.

[0039] After the third servo motor 630 is started, its output shaft drives the second gear 620 to rotate. The second gear 620 meshes with the bearing gear ring 610 to drive the bearing gear ring 610, the fixed unit 500, and the workpiece to rotate. When the workpiece rotates to the preset boundary position of the grinding head 330 on one side, the controller 140 receives the position feedback signal of the servo motor and controls the motor to reverse. When it reverses to the boundary position of the grinding head 330 on the other side, the controller 140 controls the motor to rotate forward again, thus realizing the reciprocating swing between the two boundary positions in a cycle.

[0040] According to the appendix Figure 1 To be continued Figure 9 As shown, the working principle of the dental prosthesis surface treatment device is as follows: The dental prosthesis polishing part 900 is placed on the tray 550, with its edges conforming to the C-shaped opening and groove 540 of the clamping plate 530; the first cylinder 560 is activated, and its telescopic end pushes the clamping plate 530 to rotate around the connecting shaft 520 to clamp the workpiece. At this time, the torsion spring is in a compressed state, providing elastic clamping force to avoid damage to the workpiece; the second cylinder 570 is used to drive the clamping table 510 to move, so that the dental prosthesis polishing part 900 is in contact with the polishing head 330 for easy polishing.

[0041] The first servo motor 210 of the floating unit 200 is started by the controller 140. The first servo motor 210 drives the first gear 220 to rotate. The gear meshes with the rack plate 230 to drive the movable frame 130 to move up and down along the guide rail 240. The guide sleeve 250 slides with the guide rail 240 to ensure stability until the grinding head 330 reaches the initial grinding height that matches the workpiece.

[0042] According to the grinding requirements of the inner or outer surface of the dental prosthesis grinding part 900, the third cylinder 700 is activated. The telescopic end of the third cylinder 700 pushes or pulls the bearing seat 310 to slide along the adjustment groove 370. The adjustment sleeve 380 ensures smooth sliding and adjusts the spacing of the three grinding heads 330. When grinding the outer surface, the adjustment spacing is adapted to the outer dimension of the workpiece. When grinding the inner surface, the adjustment spacing is adapted to the inner dimension of the workpiece.

[0043] After the spacing of the grinding head 330 is adjusted, the fourth cylinder 800 is started. Its telescopic end pushes the adjusting roller shaft 390 to move. Through the meshing action of the toothed block on the sleeve and the rack belt 350, the tension of the rack belt 350 is adjusted to ensure that the three sets of gear discs 340 can be linked synchronously and ensure that the grinding head 330 rotates at the same speed.

[0044] When grinding is being performed, the second servo motor 360 is started, and its output shaft drives the fixed rotating shaft 320 to rotate. The gear disk 340 on the rotating shaft 320 drives the other two sets of gear disks 340 to rotate synchronously through the rack belt 350, thereby realizing the synchronous rotation of the three grinding heads 330 to grind the surface of the workpiece.

[0045] During the grinding process, the controller 140 controls the first servo motor 210 to rotate forward and backward, driving the first gear 220 to rotate back and forth. The rack plate 230 drives the movable frame 130 to float up and down along the guide rail 240, so that the grinding head 330 generates up and down feed motion while rotating and grinding, improving grinding efficiency and avoiding processing dead corners or uneven grinding caused by a single grinding trajectory.

[0046] When grinding the outer side of the workpiece, the second gear 620 is driven to rotate by the third servo motor 630. The second gear 620 meshes with the bearing gear ring 610, which drives the fixed unit 500 and the workpiece to swing back and forth with the boundary positions of the grinding heads 330 on both sides as the limit points, so that each area on the outer side of the workpiece can fully contact the grinding head 330, ensuring the uniformity of grinding on the outer side.

[0047] At the same time as the grinding starts, the external dust collection device works through the first dust collection pipe 440 and the second dust collection pipe 450, which creates negative pressure in the dust removal space formed by the dust collection plate 410 and the cover plate 430. Under the action of negative pressure, the debris generated by grinding is guided by the guide plate 460 to gather towards the dust collection hole 420, and finally enters the dust removal space through the dust collection hole 420, and is then discharged by the dust collection pipe, realizing real-time debris cleaning during the grinding process.

[0048] The embodiments of this specific implementation have been described above. However, this embodiment is not limited to the specific implementation described above. The specific implementation described above is merely illustrative and not restrictive. Those skilled in the art can make many other forms based on the guidance of this embodiment, all of which are within the protection scope of this embodiment.

Claims

1. A surface treatment device for dental prostheses, used for surface polishing of dental prostheses, characterized in that, include: The main body of the device includes a grinding table, a loading rack, a movable frame, and a controller; A floating unit is disposed between the loading frame and the movable frame, and the floating unit controls the movable frame to float up and down. The grinding unit includes multiple sets of bearing seats disposed inside the movable frame. The bearing seats are rotatably connected to a rotating shaft through bearings. A grinding head is installed at the end of the rotating shaft away from the bearing seat. A gear disk is installed on each set of rotating shafts. The three sets of gear disks are covered with a rack belt. A second servo motor is installed on the movable frame, and the output shaft of the second servo motor is fixedly connected to one of the sets of rotating shafts. The dust extraction unit, located on the polishing table, is used to remove debris generated during the surface polishing of dental prostheses.

2. The surface treatment device for oral prostheses according to claim 1, characterized in that, The floating unit includes a first servo motor mounted on a loading frame. The output shaft of the first servo motor passes through the loading frame and is fitted with a first gear. A rack plate is meshed on the first gear, and the rack plate is fixedly connected to the movable frame.

3. The surface treatment device for dental prostheses according to claim 1, characterized in that, The movable frame has adjustment slots on both sides, and adjustment sleeves are slidably connected inside the adjustment slots. The adjustment sleeves are fixedly connected to two sets of bearing seats away from the second servo motor. A third cylinder is also installed on both sides of the movable frame, and the extension and retraction ends of the third cylinders are fixedly connected to the bearing seats respectively.

4. The surface treatment device for dental prostheses according to claim 3, characterized in that, The movable frame is equipped with an adjusting roller shaft, and a sleeve is connected to the adjusting roller shaft by a bearing. The adjusting roller shaft is located inside the rack belt. Several sets of toothed blocks are provided on the outside of the sleeve, and the toothed blocks are meshed with the rack belt. A fourth cylinder is installed on the movable frame, and the telescopic end of the fourth cylinder is fixedly connected to the adjusting roller shaft.

5. The surface treatment device for oral prostheses according to claim 1, characterized in that, The dust collection unit includes a dust collection plate installed on the grinding table. The dust collection plate has several dust collection holes. The inside of the grinding table is equipped with a cover plate, and a first dust collection pipe and a second dust collection pipe are installed on the cover plate.

6. The dental prosthesis surface treatment device according to claim 5, characterized in that, The dust removal space is formed between the dust removal plate and the cover plate. It is connected to an external dust removal device through the first and second dust removal pipes, so that negative pressure is formed in the dust removal space, and the debris generated by external grinding is cleaned through the dust removal holes.

7. The dental prosthesis surface treatment device according to claim 1, characterized in that, The dust collection plate is provided with a fixing unit, which includes a clamping platform disposed on the dust collection plate. A rotating unit is provided between the dust collection plate and the clamping platform. A connecting shaft is connected to the clamping platform by a bearing, and a clamping plate is installed on the connecting shaft. A first cylinder is installed on the clamping platform, and the telescopic end of the first cylinder passes through the clamping platform and contacts the outer surface of the clamping plate.

8. The surface treatment device for oral prostheses according to claim 7, characterized in that, The opening of the card plate is C-shaped, and a groove is provided at the edge of the opening.

9. The surface treatment device for oral prostheses according to claim 7, characterized in that, A torsion spring is provided on the connecting shaft. One end of the torsion spring is fixedly connected to the clamping platform, and the other end of the torsion spring is fixedly connected to the clamping plate.

10. The surface treatment device for oral prostheses according to claim 7, characterized in that, A tray is installed at one end of the clamping platform near the card plate, and the tray is located directly below the card plate.

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