Orthopedic finishing assembly and orthopedic finishing apparatus

Abstract

The application provides a shaping and polishing assembly and a shaping and polishing device. The shaping and polishing assembly comprises a rotating shaft, a first rotating disc arranged on the rotating shaft, a plurality of first polishing structures arranged on the first rotating disc, a second rotating disc arranged on the rotating shaft, a plurality of second polishing structures arranged on the second rotating disc, and the first rotating disc and the second rotating disc are arranged in the axial direction of the rotating shaft. The arrangement density of the first polishing structures is less than that of the second polishing structures. The application aims to solve the technical problem that the existing shaping and polishing assembly cannot achieve fine polishing.

Description

Technical Field

[0001] This application relates to the field of processing equipment technology, and in particular to shaping and polishing components and shaping and polishing equipment. Background Technology

[0002] Shaping and grinding is a process that reshapes powder particles to remove sharp edges and corners. However, current shaping and grinding components often fail to achieve precise grinding, resulting in over-grinding or insufficient shaping, ultimately leading to finished product materials with particle sizes that do not meet specifications. Utility Model Content

[0003] The main purpose of this application is to provide a shaping and polishing component and a shaping and polishing device, which aims to solve the technical problem that the existing shaping and polishing components cannot achieve fine polishing.

[0004] This application provides a shaping and polishing component, including:

[0005] Shaft;

[0006] A first turntable is disposed on the rotating shaft; the first turntable is provided with a plurality of first grinding structures, the plurality of first grinding structures being arranged at intervals;

[0007] The second turntable is disposed on the rotating shaft; the first turntable and the second turntable are spaced apart along the axial direction of the rotating shaft and are located below the first turntable; the second turntable is provided with a plurality of second grinding structures, which are arranged at intervals.

[0008] The arrangement density of the first grinding structure is less than that of the second grinding structure.

[0009] Optionally, the first grinding structure is arranged at intervals along the circumference of the first turntable; the second grinding structure is arranged at intervals along the circumference of the second turntable.

[0010] The circumferential spacing between two adjacent first grinding structures is greater than the circumferential spacing between two adjacent second grinding structures.

[0011] Optionally, the first turntable includes:

[0012] A first disc body, the first disc body being fixedly connected to the rotating shaft; and

[0013] A plurality of first rods extend radially from the first disc body, and the first rods are arranged at circumferential intervals along the first disc body to form a first material leakage gap, which connects the first disc body and the second disc body to a first axial space.

[0014] Optionally, the first grinding structure is provided at the end of the first rod away from the first disc.

[0015] Optionally, the second turntable includes a second disc body, which is a sealed-bottom disc body, and the second disc body is fixedly connected to the rotating shaft; the second grinding structure is disposed on the circumferential edge of the second disc body.

[0016] Optionally, the distance between the first grinding structure and the rotating shaft is equal to the distance between the second grinding structure and the rotating shaft.

[0017] Optionally, the shaping and polishing assembly further includes a third turntable, which is disposed on the rotating shaft; the third turntable is provided with a third polishing structure; and in the axial direction of the rotating shaft, the first turntable is disposed between the third turntable and the second turntable.

[0018] The third turntable has a second material leakage gap, which connects the third turntable and the first turntable to a second axial space.

[0019] Optionally, the arrangement density of the third grinding structure is less than or equal to the arrangement density of the first grinding structure; and / or the edge of the third turntable away from the rotating axis forms a grinding surface, and the third grinding structure is the grinding surface.

[0020] This application also proposes a shaping and polishing device, including a housing, a shaping and polishing assembly as described above, and a tooth grinding part; the housing is formed with a shaping cavity;

[0021] The shaping and polishing assembly is disposed within the shaping cavity; the toothed grinding part is connected to the housing and is arranged around the shaping and polishing assembly, and a radial ventilation gap is formed between the toothed grinding part and the first turntable and the second turntable.

[0022] Optionally, the housing is provided with an air inlet, a material outlet, and a material inlet; the air inlet is located on the lower side of the shaping and polishing assembly, the material outlet is located on the upper side of the shaping and polishing assembly, and the material inlet is located on the upper side of the shaping and polishing assembly.

[0023] In the technical solution of this application embodiment, both the first and second turntables are mounted on a rotating shaft, and the first and second turntables rotate when the shaft rotates. The first turntable has a first grinding structure, and the second turntable has a second grinding structure. Both the first and second grinding structures perform shaping and grinding processing on the raw materials when the shaft rotates. The first and second turntables are spaced apart along the axial direction of the rotating shaft and are located below the first turntable. They each have different grinding areas along the axial direction. The arrangement density of the first grinding structure is less than that of the second grinding structure, and the first turntable is located above the second turntable. Larger materials fall into the grinding area of ​​the second turntable. The relatively more distributed second grinding structures grind larger materials, while the relatively less distributed first grinding structures grind smaller materials, enabling different intensities of grinding on different raw materials for refined grinding. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of a shaping and polishing component disposed within a shaping cavity, as provided in an embodiment of this application.

[0026] Figure 2 This is a schematic diagram of the assembly of a shaping and grinding component and a gear grinding part provided in an embodiment of this application;

[0027] Figure 3 This is a schematic diagram of the structure of the first turntable in a shaping and polishing assembly provided in an embodiment of this application;

[0028] Figure 4 This is a schematic diagram of the structure of the second turntable in a shaping and polishing assembly provided in an embodiment of this application;

[0029] Figure 5 This is a schematic diagram of the structure of the third turntable in a shaping and polishing assembly provided in an embodiment of this application;

[0030] Figure 6 This is a schematic diagram of the structure of a shaping and polishing device provided in an embodiment of this application.

[0031] List of reference numerals

[0032] 100 pivot 132 Third disc 110 First turntable 1311 Third polishing structure 111 First rod 20 case 112 First grinding structure 21 Material import 113 First plate 22 air inlet 120 Second turntable 23 Material export 121 Second plate 30 Gear grinding parts 122 Second polishing structure 40 motor 130 Third turntable Detailed Implementation

[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0034] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0035] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0036] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0037] In shaping and grinding, raw materials are fed into shaping and grinding equipment. The edges, corners, and particle sizes of the raw materials are inconsistent. In related technologies, shaping and grinding components use a set of turntables to shape and grind the materials without partitioning. When grinding inconsistent raw materials, it is difficult to ensure that the grinding intensity is different for different materials. Therefore, this application provides a shaping and grinding component that uses partitioned grinding to achieve fine grinding of raw materials.

[0038] Reference Figure 1 and Figure 2 As shown in the figure, this application embodiment proposes a shaping and polishing assembly 10, including a rotating shaft 100, a first turntable 110 and a second turntable 120.

[0039] Among them, the rotating shaft 100 is the component of the shaping and grinding assembly 10 that realizes power transmission, and it is used to connect power components such as motor 40.

[0040] The first turntable 110 and the second turntable 120 are both mounted on the rotating shaft 100. When the rotating shaft 100 rotates, the first turntable 110 and the second turntable 120 also rotate. The first turntable 110 is provided with a first grinding structure 112, and the second turntable 120 is provided with a second grinding structure 122. Both the first grinding structure 112 and the second grinding structure 122 perform shaping and grinding processing on the raw materials when the rotating shaft 100 rotates. The first turntable 110 and the second turntable 120 are spaced apart along the axial direction of the rotating shaft 100 and are located below the first turntable 110. They each have different grinding areas along the axial direction. The arrangement density of the first grinding structure 112 is less than that of the second grinding structure 122. The first turntable 110 is located above the second turntable 120. Larger materials fall into the grinding area of ​​the second turntable 120. The relatively more distributed second grinding structures 122 grind larger materials, while the relatively less distributed first grinding structures 112 grind smaller materials. This allows for different intensities of grinding on different raw materials, enabling fine grinding of the raw materials.

[0041] In some embodiments, the first grinding structures 112 are spaced apart to form gaps, allowing larger materials to fall into the grinding area of ​​the second turntable 120, while smaller materials are ground in the grinding area of ​​the first turntable 110. When the shaping and grinding assembly 10 is assembled into the entire shaping and grinding equipment, the second turntable 120 is located below the first turntable 110. Gas is blown into the shaping and grinding equipment from below the first turntable 110. Under the action of the airflow, smaller particles are retained in the grinding area of ​​the first turntable 110, while larger particles fall into the grinding area of ​​the second turntable 120 through the gaps under the action of gravity. After being ground, the larger particles have less gravity and are blown into the grinding area of ​​the first turntable 110 for further grinding under the action of the airflow, thereby ensuring that the finished product is more uniform in appearance and particle size than the finished product ground in the prior art.

[0042] Furthermore, in existing technologies, large-scale grinding cannot be achieved with only one turntable. For example, the grinding components, due to their large assistance, struggle to move materials, and the air inlet 22 is easily blocked by falling materials, posing a risk of material leakage. This structure is ill-suited to meet the market's demands for high production capacity and fine grinding and shaping. In the technical solution of this application embodiment, larger materials can be ground by the lower second grinding structure 122 as they fall, reducing the rotational resistance of the grinding components and facilitating large-scale grinding needs. Moreover, the larger materials falling are ground by the second grinding structure 122, reducing the risk of material leakage from the air inlet 22, thereby reducing maintenance frequency and time, and thus increasing production capacity.

[0043] In the technical solutions of the above embodiments, the arrangement density can be understood as the number of grinding structures arranged within a certain area. In the shaping and grinding equipment, the grinding structures need to work together with the gear grinding parts 30 to grind the material; therefore, the grinding structures are set at the circumferential edge of the turntable. For this reason, the arrangement density can be understood as the number of grinding structures arranged around the circumference of the turntable. For example, as... Figure 3 As shown, six first polishing structures 112 are arranged around the first turntable 110.

[0044] As an optional implementation of the above embodiments, such as Figure 3 As shown, the first polishing structure 112 is arranged at intervals along the circumference of the first turntable 110. Figure 4 As shown, the second polishing structures 122 are arranged at circumferential intervals along the second turntable 120. The circumferential interval between two adjacent first polishing structures 112 is greater than the circumferential interval between two adjacent second polishing structures 122. In this embodiment, the circumferential interval between two adjacent first polishing structures 112 is greater than the circumferential interval between two adjacent second polishing structures 122, meaning that the arrangement density of the first polishing structures 112 is greater than the arrangement density of the second polishing structures 122 within one revolution.

[0045] In some embodiments, the circumferential spacing distance can be understood as the radian distance between two adjacent polishing structures; for example, as... Figure 3 and Figure 4 As shown, the circumferential spacing between two adjacent first polishing structures 112 corresponds to the first radian L1; the circumferential spacing between two adjacent second polishing structures 122 corresponds to the first radian L2.

[0046] like Figure 3As shown, as an optional implementation of the above embodiment, the first turntable 110 includes a first disc body 113 and a first rod body 111. The first disc body 113 is fixed to the rotating shaft 100. In some embodiments, the first disc body 113 may be integrally formed with the rotating shaft 100. In some embodiments, the first disc body 113 may be welded to the rotating shaft 100. In some embodiments, the first disc body 113 may be fixed to the rotating shaft 100 by threaded parts; the rotating shaft 100 is provided with a first protrusion, the first disc body 113 is sleeved on the rotating shaft 100 and abuts against the first protrusion; the first protrusion is provided with a plurality of first threaded holes arranged circumferentially, and the first disc body 113 is provided with a plurality of second threaded holes arranged circumferentially; the first threaded holes and second threaded holes are fastened one by one by the threaded parts, so that the first turntable 110 and the rotating shaft 100 are fixedly connected and can be disassembled for disassembly and maintenance.

[0047] In this embodiment, a first rod 111 extends radially outward from a first disc 113 and is fixedly connected to the first disc 113. Multiple first rods 111 are arranged circumferentially at intervals along the first disc 113 to form a first material leakage gap, which connects the first disc 113 to the first axial space between the first disc 113 and the second disc 121. Larger particles can leak through the first material leakage gap into the grinding area (first axial space) of the second turntable 120, and as the shaft 100 rotates, the first rods 111, using centrifugal force, can gradually guide the material radially outward.

[0048] As an optional embodiment of the above embodiments, the first grinding structure 112 is provided at the end of the first rod 111 away from the first disc 113. The first grinding structure 112 can be fixed to the end of the first rod 111 away from the first disc 113 by a threaded component. The material can be gradually guided radially outward by the first rod 111 with the help of centrifugal force. The first grinding structure 112 is provided at the far end of the first rod 111 so as to grind the material together with the toothed grinding component 30 arranged around it.

[0049] In some other embodiments, the ends of a plurality of first rods 111 that are away from the first disc 113 are connected by an outer ring. The first polishing structures 112 may be spaced out on the outer ring.

[0050] As an optional embodiment of the above embodiments, the second turntable 120 includes a second disc body 121, which is a sealed-bottom disc body, and the second disc body 121 is fixedly connected to the rotating shaft 100. In some embodiments, the second disc body 121 may be integrally formed with the rotating shaft 100. In some embodiments, the second disc body 121 may be welded to the rotating shaft 100. In some embodiments, the second disc body 121 may be fixed to the rotating shaft 100 by threaded parts; the rotating shaft 100 is provided with a second protrusion, the second disc body 121 is sleeved on the rotating shaft 100 and abuts against the second protrusion; the second protrusion is provided with a plurality of third threaded holes arranged circumferentially, and the second disc body 121 is provided with a plurality of fourth threaded holes arranged circumferentially; the second disc body 120 and the rotating shaft 100 are fixedly connected and detachable by threaded parts through the third threaded holes and fourth threaded holes, so as to facilitate disassembly and maintenance.

[0051] The second grinding structure 122 is located on the circumferential edge of the second disc 121. In this embodiment, the second turntable 120 is a bottom-sealed turntable, meaning that the material falling onto the second turntable 120 no longer falls down. Instead, under the action of centrifugal force, the material is discharged to the circumferential edge of the second disc 121 and ground by the second grinding structure 122, thus minimizing the possibility of material continuing to fall down and causing air vent blockage.

[0052] As an optional implementation of the above embodiments, the distance between the first grinding structure 112 and the rotating shaft 100 is equal to the distance between the second grinding structure 122 and the rotating shaft 100. In the embodiments, such as Figure 2 As shown, when viewed on a plane perpendicular to the axis of the rotating shaft 100, the first grinding structure 112 and the second grinding structure 122 are both located on a circle with the axis of the rotating shaft 100 as the center. In order to make the radial ventilation clearance of the first grinding structure 112 and the second grinding structure 122 the same as that of the gear grinding part 30, this structure can make the inner diameter of the gear grinding part 30 the same and eliminate the need for diameter variation.

[0053] In the embodiments of this application, such as Figure 1 and Figure 5As shown, the shaping and polishing assembly 10 also includes a third turntable 130. As an optional embodiment of the above embodiment, the shaping and polishing assembly 10 further includes a third turntable 130, which is disposed on the rotating shaft 100. In some embodiments, the third disc body 132 can be integrally disposed with the rotating shaft 100. In some embodiments, the third disc body 132 can be welded to the rotating shaft 100. In some embodiments, the third disc body 132 can be fixed to the rotating shaft 100 by threaded parts; the rotating shaft 100 is provided with a third protrusion, the third disc body 132 is sleeved on the rotating shaft 100 and abuts against the third protrusion; the third protrusion is provided with a plurality of fifth threaded holes arranged circumferentially, and the third disc body 132 is provided with a plurality of sixth threaded holes arranged circumferentially; the fifth threaded holes and sixth threaded holes are fastened one by one by the threaded parts, so that the third turntable 130 and the rotating shaft 100 are fixedly connected and can be disassembled for disassembly and maintenance.

[0054] The third turntable 130 is provided with a third grinding structure 1311; along the axial direction of the rotating shaft 100, the first turntable 110 is disposed between the third turntable 130 and the second turntable 120; the third turntable 130 has a second material leakage gap, which connects the second axial space between the third turntable 130 and the first turntable 110. In this embodiment, the shaping and grinding assembly 10 consists of a third turntable 130, a first turntable 110, and a second turntable 120 along the rotating shaft 100 from top to bottom, and can be divided into three areas for grinding. When the rotating shaft 100 rotates, the third grinding structure 1311 on the third turntable 130 grinds light materials, the first grinding structure 112 on the first turntable 110 grinds medium materials, and the second grinding structure 122 on the second turntable 120 grinds heavy materials.

[0055] In the embodiments, when the shaping and polishing assembly provided in this application is applied to the shaping and polishing equipment, when the material enters the shaping cavity, under the action of airflow and the gravity of the material, the light material is polished in the upper region by the third polishing structure 1311, while the medium and heavy materials fall into the middle region through the second material leakage gap. The medium material is polished in the middle region by the first polishing structure 112, while the heavy material continues to fall into the lower region and is polished by the second polishing structure 122. After the heavy material is polished, its mass becomes lighter and it floats to the middle region, where it continues to be polished by the first polishing structure 112; after the medium material in the middle region is polished, its mass becomes lighter and it floats to the upper region, where it continues to be polished by the second polishing structure 122; finally, the material basically forms a finished product with a more uniform appearance and particle size.

[0056] As an optional implementation of the above embodiments, the arrangement density of the third grinding structure 1311 is less than or equal to the arrangement density of the first grinding structure 112. In this embodiment, the third grinding structure 1311 is mainly used to grind lightweight materials, and its arrangement density is less than or equal to that of the first grinding structure 112. It is mainly used to further shape the already ground materials or to perform slight grinding on lightweight materials.

[0057] In some embodiments, the edge of the third turntable 130 away from the rotating shaft 100 forms a grinding surface, and the third grinding structure 1311 is the grinding surface. That is, the edge of the third turntable 130 away from the rotating shaft 100 is the grinding surface; unlike the first grinding structure 112 and the second grinding structure 122, which are grinding parts that can be detached from their respective turntables, the third grinding structure 1311 is a grinding surface where the edge of the third turntable 130 is directly curved. This is because the first grinding structure 112 and the second grinding structure 122 need to deal with medium or high quality materials, which are more severely worn and require frequent replacement or maintenance; while the third grinding structure 1311 mainly performs slight shaping on materials, wears out and is replaced less frequently, so the grinding surface is directly set.

[0058] In this embodiment, the third turntable 130 includes a second rod 131 and a third disc 132, with the second rod 131 extending radially outward from the third disc 132. The end of the second rod 131 away from the rotating shaft 100 is the grinding surface. A plurality of second rods 131 are spaced circumferentially to form a second material leakage gap. Viewed in a plane perpendicular to the axial direction of the rotating shaft 100, the width of the second rod 131 is smaller than the width of the first rod 111, resulting in a larger second radial gap and preventing the accumulation of medium and heavy materials. Viewed in a plane perpendicular to the axial direction of the rotating shaft 100, the second rod 131 and the first rod 111 are staggered circumferentially, improving the grinding uniformity of the finished material.

[0059] In the embodiment, both the first grinding structure 112 and the second grinding structure 122 are threaded components, such as embedded threaded components installed on their respective turntables, and the edges of the first grinding structure 112 and the second grinding structure 122 are provided with arc transitions to enable the introduction grinding of multi-angled particles and to grind the edges of the material particles.

[0060] In some embodiments, the first turntable 110 and the second turntable 120 can be installed separately or in combination, which facilitates disassembly and installation.

[0061] In the technical solutions of this application embodiment, the shaping and polishing assembly 10 can also be provided with three or more turntables according to the quality requirements of the material; in some embodiments, the arrangement density of the lower polishing structure is higher than that of the upper polishing structure.

[0062] This application also proposes a shaping and polishing device, including a housing 20, a shaping and polishing assembly 10, and a toothed grinding element 30; the housing 20 forms a shaping cavity. The shaping and polishing assembly 10 adopts some or all of the technical solutions of the aforementioned embodiments, and therefore possesses some or all of the technical advantages of the aforementioned embodiments, which will not be elaborated further here. The shaping and polishing assembly 10 is disposed within the shaping cavity. The toothed grinding element 30 is connected to the housing 20 and is arranged around the shaping and polishing assembly 10, and a radial ventilation gap is formed between the toothed grinding element 30 and the first turntable 110 and the second turntable 120. In the embodiment, the toothed grinding element 30 can be fixed to or configured to be rotatable around the axis of the rotating shaft 100 and disposed within the housing 20, surrounding the shaping and polishing assembly 10. When the rotating shaft 100 rotates, the first polishing structure 112 and the toothed grinding element 30, and the second polishing structure 122 and the toothed grinding element 30 polish the material. Figure 1 and Figure 6 As shown, gas can blow the ground material upwards through the radial ventilation gap. Furthermore, as the rotating shaft 100 rotates, the material is thrown by the turntable into the radial ventilation gap between the turntable grinding mechanism and the surrounding mating gear grinding parts 30 for grinding, becoming fine particles, which are then blown upwards by the lower supplementary airflow. During the rotation of the rotating shaft 100, substandard material particles are ground on different turntable grinding structures according to their size, until the sharp edges on the particle surface are removed.

[0063] In this embodiment, the radial ventilation gap can be set according to the required particle size.

[0064] In this embodiment, the shaping and polishing equipment can be a large-scale shaping and polishing equipment to shape a large quantity of materials; or it can be a medium-sized or small-scale shaping and polishing equipment to shape a small or medium batch of materials.

[0065] As an optional implementation of the above embodiments, the housing 20 is provided with an air inlet 22, a material outlet 23, and a material inlet 21; the air inlet 22 is located on the lower side of the shaping and polishing assembly 10, the material outlet 23 is located on the upper side of the shaping and polishing assembly 10, and the material inlet 21 is located on the upper side of the shaping and polishing assembly 10. In this embodiment, the gas flow direction is from the lower side of the shaping and polishing assembly 10 upwards, and the material is fed from the upper part of the shaping and polishing assembly 10. After the material is fed, under the airflow and the weight of the material itself, larger materials fall to the lower layer, while smaller materials remain on the upper layer, achieving zoning. Finished materials with qualified particles are then carried into the material outlet 23 by the tangential force of the rotating flow field for discharge.

[0066] In one embodiment, the housing is further provided with an air outlet (not shown), which is located above the material outlet 23. In some embodiments, a fan is provided at the end of the air outlet. In some embodiments, a classifying impeller is also provided inside the shaping cavity. Axially, the classifying impeller is located between the air outlet and the material outlet.

[0067] The shaping and polishing equipment provided in this application embodiment can shape and polish graphite and silicon carbide powder.

[0068] The above description is merely an optional embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the content of the specification and drawings of this application under the concept of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A shaping and polishing assembly, characterized in that, include: Shaft; A first turntable is disposed on the rotating shaft; the first turntable is provided with a plurality of first grinding structures, the plurality of first grinding structures being arranged at intervals; The second turntable is disposed on the rotating shaft; the first turntable and the second turntable are spaced apart along the axial direction of the rotating shaft and are located below the first turntable; the second turntable is provided with a plurality of second grinding structures, which are arranged at intervals. The arrangement density of the first grinding structure is less than that of the second grinding structure.

2. The shaping and polishing assembly as described in claim 1, characterized in that, The first grinding structure is arranged at intervals along the circumference of the first turntable; the second grinding structure is arranged at intervals along the circumference of the second turntable; The circumferential spacing between two adjacent first grinding structures is greater than the circumferential spacing between two adjacent second grinding structures.

3. The shaping and polishing assembly as described in claim 1, characterized in that, The first turntable includes: A first disc body, the first disc body being fixedly connected to the rotating shaft; and A plurality of first rods extend radially from the first disc body, and the first rods are arranged at circumferential intervals along the first disc body to form a first material leakage gap, which connects the first disc body and the second disc body to a first axial space.

4. The shaping and polishing assembly as described in claim 3, characterized in that, The first grinding structure is provided at the end of the first rod away from the first disc.

5. The shaping and polishing assembly as described in any one of claims 1 to 4, characterized in that, The second turntable includes a second disc body, which is a sealed-bottom disc body, and the second disc body is fixedly connected to the rotating shaft; the second grinding structure is located on the circumferential edge of the second disc body.

6. The shaping and polishing assembly as described in claim 5, characterized in that, The distance between the first grinding structure and the rotating shaft is equal to the distance between the second grinding structure and the rotating shaft.

7. The shaping and polishing assembly as described in claim 1, characterized in that, The shaping and polishing assembly further includes a third turntable, which is disposed on the rotating shaft; the third turntable is provided with a third polishing structure; and in the axial direction of the rotating shaft, the first turntable is disposed between the third turntable and the second turntable. The third turntable has a second material leakage gap, which connects the third turntable and the first turntable to a second axial space.

8. The shaping and polishing assembly as described in claim 7, characterized in that, The arrangement density of the third grinding structure is less than or equal to the arrangement density of the first grinding structure; and / or the edge of the third turntable away from the rotating shaft forms a grinding surface, and the third grinding structure is the grinding surface.

9. A shaping and polishing device, characterized in that, Includes a housing and the shaping and polishing assembly as described in any one of claims 1 to 8, as well as a gear grinding element; the housing is formed with a shaping cavity; The shaping and polishing assembly is disposed within the shaping cavity; the toothed grinding part is connected to the housing and is arranged around the shaping and polishing assembly, and a radial ventilation gap is formed between the toothed grinding part and the first turntable and the second turntable.

10. The shaping and polishing equipment as described in claim 9, characterized in that, The housing is provided with an air inlet, a material outlet, and a material inlet; the air inlet is located on the lower side of the shaping and polishing assembly, the material outlet is located on the upper side of the shaping and polishing assembly, and the material inlet is located on the upper side of the shaping and polishing assembly.

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