A polishing positioning structure, a combined polishing positioning device and a polishing equipment

Abstract

The utility model relates to polishing device technical field discloses a kind of polishing positioning structure, combined polishing positioning device and polishing equipment, comprising: sector plate body, including outer arc side, at least one arc positioning area is provided on the sector plate body, the extension direction of the arc positioning area is same with the extension direction of the outer arc side;Multiple rotating clamping stations are arranged along the extension direction of the arc positioning area in the arc positioning area, to rotate clamping and make the axis extension line of the workpiece pass the center of the outer arc side of corresponding workpiece.The utility model can position multiple workpieces simultaneously by setting arc positioning area and multiple rotating clamping stations arranged along its extension direction on sector plate body, can polish multiple products simultaneously at a time, significantly improve processing efficiency;Multiple arc positioning areas are further increased the number of simultaneously positioned workpieces by radial spacing arrangement, further improve efficiency, thereby reduce processing cost.

Description

Technical Field

[0001] This utility model relates to the field of polishing device technology, specifically to a polishing positioning structure, a combined polishing positioning device, and polishing equipment. Background Technology

[0002] The existing polishing of the outer cylindrical surface of cylindrical or annular parts uses SPM polishing equipment. However, due to the structural limitations of SPM polishing equipment, only a single string of material can be loaded for polishing at a time, resulting in low processing efficiency and high processing costs. Utility Model Content

[0003] In view of this, the present invention provides a polishing positioning structure, a combined polishing positioning device, and a polishing equipment to solve the problem that current SPM polishing equipment can only perform polishing operations on single strands of rods.

[0004] In a first aspect, this utility model provides a polishing positioning structure, comprising:

[0005] A sector-shaped plate body, including an outer arc edge, wherein at least one arc-shaped positioning area is provided on the sector-shaped plate body, and the extending direction of the arc-shaped positioning area is the same as the extending direction of the outer arc edge;

[0006] Multiple rotating clamping stations are arranged at intervals within the arc-shaped positioning area along the extension direction of the arc-shaped positioning area, so as to rotate and clamp the corresponding workpieces and make the extension line of the axis of the workpiece pass through the center of the outer arc edge.

[0007] The beneficial effects of the above-mentioned polishing positioning structure are as follows: by setting an arc-shaped positioning area on the fan-shaped plate and multiple rotating clamping stations arranged at intervals along its extension direction, multiple workpieces can be positioned simultaneously, and multiple products can be polished at the same time. This effectively solves the limitation of existing SPM polishing equipment that can only process a single string of rods at a time. Compared with SPM polishing equipment, the polishing capacity increases exponentially, significantly improving processing efficiency. The radially spaced arrangement of multiple arc-shaped positioning areas can further increase the number of workpieces positioned at the same time, further improving efficiency and thus reducing processing costs.

[0008] In addition, the design of the workpiece axis extension line passing through the center of the outer arc edge, combined with the rotational clamping station and the rotational coordination of the connecting rod assembly, can ensure the stable rotation of the workpiece during the polishing process, ensuring polishing uniformity and consistency, and improving polishing quality.

[0009] In one optional embodiment, one end of the outer arc edge is provided with meshing teeth, and the fan-shaped plate body further includes a smooth edge, which is provided on both sides of the fan-shaped plate body along with the outer arc edge.

[0010] In one alternative implementation, the arc-shaped positioning area is an arc-shaped hole.

[0011] In one alternative embodiment, the rotating clamping station includes mounting holes formed on the arc-shaped wall within the arc-shaped positioning area.

[0012] In one optional embodiment, there are two mounting holes, and the extension line connecting the two mounting holes passes through the center of the outer arc edge.

[0013] The beneficial effects of the above technical solution are as follows: The above technical solution can ensure that the extension line of the workpiece axis accurately points to the center of the fan-shaped plate. When the polishing structure rotates around the center of the fan-shaped plate to polish the workpiece on the string rod assembly, it can drive the workpiece to rotate around the axis of the string rod assembly, thereby ensuring that the outer surface of the workpiece can be polished, improving the polishing uniformity and consistency.

[0014] In one optional embodiment, a connecting rod assembly is provided on the rotating clamping station, the connecting rod assembly being adapted to position the workpiece;

[0015] The rotating clamping station is rotatably connected to the rod assembly, or the rod assembly is rotatably connected to the workpiece.

[0016] In one alternative embodiment, multiple arc-shaped positioning areas are provided, and each arc-shaped positioning area is arranged at radial intervals along the fan-shaped plate.

[0017] The beneficial effects of the above technical solution are as follows: the above technical solution can rationally plan the positioning area within the limited space of the fan-shaped plate, significantly increase the number of workpieces positioned at the same time, further improve processing efficiency, and thus reduce processing costs; at the same time, the radially spaced arrangement can ensure that the workpieces in each arc-shaped positioning area do not interfere with each other during the polishing process, ensuring the stability and reliability of the polishing operation.

[0018] Secondly, this utility model provides a combined polishing positioning device, comprising:

[0019] Multiple polishing positioning structures are connected in sequence to form a ring.

[0020] The beneficial effects of the above technical solution are as follows: the above technical solution can realize the simultaneous positioning and polishing of more workpieces in a limited space, which significantly improves the batch processing efficiency; the ring structure design makes each polishing positioning structure move synchronously around the same center, and combined with the rotation of the polishing structure around the center, it can ensure that all workpieces are subjected to uniform force and have consistent movement trajectory during the polishing process, effectively improving the stability and consistency of polishing quality.

[0021] Thirdly, this utility model provides a polishing device, comprising:

[0022] Polished structure;

[0023] A driving structure, which is connected to and drives the polishing structure to move;

[0024] The combined polishing positioning device is installed on the polishing structure;

[0025] The polishing structure has an outer toothed ring, which engages with the meshing teeth of the polishing positioning structure.

[0026] In one optional embodiment, the polishing structure includes:

[0027] First polishing structure;

[0028] The second polishing structure is provided with the combined polishing positioning device disposed between the second polishing structure and the first polishing structure; the first polishing structure and the second polishing structure are respectively connected to the driving structure via driving components.

[0029] The second polishing structure is provided with a polishing part, which faces the end face of the first polishing structure and protrudes in the direction of the first polishing structure.

[0030] The beneficial effects of the above technical solution are as follows: the effective polishing of ring-shaped parts is achieved by the cooperation of the first polishing structure and the second polishing structure; at the same time, the polishing part faces the end face of the first polishing structure and protrudes in the direction of the first polishing structure so that the polishing part can act on the outer side of the product in a linear processing manner, which is especially suitable for shoulder ring-shaped parts, and achieves effective polishing of the inner steps of shoulder ring-shaped parts. Attached Figure Description

[0031] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0032] Figure 1 A schematic diagram of the polishing positioning structure provided by this utility model;

[0033] Figure 2 A schematic diagram of the polishing positioning structure provided by this utility model when installing the string rod assembly;

[0034] Figure 3 This is a schematic diagram of the structure of the rod assembly of this utility model;

[0035] Figure 4 This is an exploded view of the rod assembly of this utility model;

[0036] Figure 5 A schematic diagram of the polishing device provided by this utility model;

[0037] Figure 6 A schematic diagram showing the connection between the first polishing structure and the polishing positioning structure of the polishing device provided by this utility model;

[0038] Figure 7 A schematic diagram showing the motion state of the first polishing structure, the second polishing structure, and the connecting rod assembly of the polishing device provided by this utility model.

[0039] Figure 8 This is a structural schematic diagram of the shoulder-shaped ring-like part provided by this utility model;

[0040] Figure 9 A schematic diagram of the structure for polishing operations using current SPM polishing equipment.

[0041] Explanation of reference numerals in the attached figures:

[0042] 1. Polishing positioning structure; 101. Fan-shaped plate; 1011. Meshing teeth; 102. Arc-shaped positioning area; 1021. Mounting hole; 103. String rod assembly; 1031. Fixing bolt; 1032. Washer; 1033. Workpiece; 10331. Shoulder; 1034. Protective sleeve; 1035. String rod; 1036. Silicone washer; 1037. Movable bolt.

[0043] 2. First polishing structure, 201. First polishing disc, 202. Mounting component, 2021. External gear ring;

[0044] 3. Second polishing structure, 301. Second polishing disc, 302. Pressing drive, 303. Polishing part, 304. Second drive, 3041. Drive tooth, 3042. Bearing. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0046] For existing cylindrical or annular parts, the outer cylindrical surface of the outer wall is polished using SPM polishing equipment. Combined with... Figure 9As shown, however, due to the limitations of its structure, the SPM polishing equipment can only be used for polishing operations with a single rod 1035 at a time, resulting in low processing efficiency and high processing costs.

[0047] Based on this, the present invention provides at least one arc-shaped positioning area on the fan-shaped plate, thereby enabling the positioning of multiple rod assemblies and improving processing efficiency.

[0048] According to an embodiment of the present invention, in a first aspect, in conjunction with Figures 1 to 2 As shown, a polishing positioning structure is provided for supporting the rod assembly 103. The polishing positioning structure includes a fan-shaped plate 101 and a rotating clamping station.

[0049] The sector-shaped plate 101 includes an outer arc edge, and at least one arc-shaped positioning area 102 is provided on the sector-shaped plate 101. The extension direction of the arc-shaped positioning area 102 is the same as the extension direction of the outer arc edge.

[0050] Multiple rotating clamping stations are provided. Multiple rotating clamping stations are arranged at intervals along the extension direction of the arc-shaped positioning area 102 to rotate and clamp the corresponding workpieces so that the extension line of the workpiece's axis passes through the center of the outer arc edge.

[0051] The aforementioned polishing positioning structure, by setting an arc-shaped positioning area 102 on the fan-shaped plate 101 and multiple rotating clamping stations spaced apart along its extension direction, can simultaneously position multiple workpieces, allowing for the simultaneous polishing of multiple products. This effectively solves the limitation of existing SPM polishing equipment, which can only process a single string of rods at a time. Compared to SPM polishing equipment, the polishing capacity increases exponentially, significantly improving processing efficiency. The radially spaced arrangement of multiple arc-shaped positioning areas 102 further increases the number of workpieces that can be positioned simultaneously, further improving efficiency and reducing processing costs. In addition, the design of the workpiece axis extension line passing through the center of the outer arc edge, combined with the rotational cooperation between the rotating clamping stations and the string assembly 103, ensures stable rotation of the workpiece during polishing, ensuring polishing uniformity and consistency, and improving polishing quality.

[0052] In some embodiments, one end of the outer arc edge is provided with a meshing tooth 1011, and the fan-shaped plate 101 also includes a smooth edge, which is provided on both sides of the fan-shaped plate 101 along with the outer arc edge.

[0053] In some embodiments, the arc-shaped positioning area 102 may be a groove, a hole, or a combination of other positioning structures. Its shape and size can be flexibly adjusted according to the type and specifications of the workpiece being processed to meet the polishing requirements of different workpieces.

[0054] In a preferred embodiment, the arc-shaped positioning area 102 is an arc-shaped hole, which allows the workpiece inside the arc-shaped hole to better contact and cooperate with the cutting fluid.

[0055] In some embodiments, the rotating clamping station includes mounting holes 1021 formed on the arc-shaped wall within the arc-shaped positioning area 102. A connecting rod assembly 103 is provided on the rotating clamping station, the connecting rod assembly 103 being adapted to position the workpiece. The dimensions of the mounting holes 1021 are adapted to the connecting rod assembly 103 for precise installation of the connecting rod assembly 103, ensuring that the connecting rod assembly 103 can stably drive the workpiece to rotate during rotation.

[0056] There are two mounting holes 1021. The extension line connecting the two mounting holes 1021 passes through the center of the outer arc edge, which can ensure that the extension line of the workpiece axis accurately points to the center of the fan-shaped plate 101. When the polishing structure rotates around the center of the fan-shaped plate 101 to polish the workpiece on the stringer assembly 103, it can drive the workpiece to rotate around the axis of the stringer assembly 103, thereby ensuring that the outer surface of the workpiece can be polished, improving the uniformity and consistency of polishing.

[0057] In some embodiments, the rotating clamping station is rotatably connected to the rod assembly 103, meaning the rod assembly 103 is rotatably mounted on the mounting hole 1021 via bearings or other means, and the workpiece is fixedly mounted on the rod assembly 103. During polishing, when the polishing structure contacts the workpiece, the polishing structure drives the workpiece and the rod assembly 103 to rotate as a whole. As an alternative embodiment, the rod assembly 103 is rotatably connected to the workpiece, and the rod assembly 103 is fixedly mounted on the clamping station. During polishing, when the polishing structure contacts the workpiece, the polishing structure only drives the workpiece to rotate.

[0058] In some embodiments, multiple arc-shaped positioning areas 102 are provided, and each arc-shaped positioning area 102 is arranged radially at intervals along the fan-shaped plate 101. This allows for reasonable planning of the positioning area within the limited space of the fan-shaped plate, significantly increasing the number of workpieces positioned simultaneously, further improving processing efficiency, and thus reducing processing costs. At the same time, the radially spaced arrangement ensures that the workpieces in each arc-shaped positioning area do not interfere with each other during the polishing process, ensuring the stability and reliability of the polishing operation.

[0059] In some embodiments, the arc-shaped positioning area 102 exposes at least one wall surface of the connecting rod assembly 103. Specifically, when the arc-shaped positioning area 102 is configured as an arc-shaped groove, the top surface of the workpiece disposed on the connecting rod assembly 103 is exposed. When the arc-shaped positioning area 102 is configured as an arc-shaped hole, both the top and bottom surfaces of the workpiece disposed on the connecting rod assembly 103 are exposed. In this case, polishing structures can be provided both above and below the workpiece, improving polishing efficiency.

[0060] In some embodiments, combined with Figure 3 and Figure 4As shown, the connecting rod assembly 103 includes a fixing bolt 1031, a washer 1032, a protective sleeve 1034, a connecting rod 1035, a silicone gasket 1036, and a movable bolt 1037. A workpiece 1033 is fitted onto the connecting rod 1035. Gaskets 1032 and protective sleeves 1034 are provided at both ends of the workpiece 1033. The two ends of the connecting rod 1035 are respectively limited by the fixing bolt 1031 and the movable bolt 1037 to the workpiece 1033 and the protective sleeve 1034. The protective sleeve 1034 protects the surface of the shoulder-shaped metal ring that does not require polishing, ensuring that the protected surface is not affected during polishing. Whether the protective sleeve is needed depends on the processing requirements. The silicone gasket 1036 eliminates gaps caused by manufacturing tolerances after assembly, ensuring that the product remains firmly in place after the connecting rod is locked.

[0061] According to an embodiment of this utility model, in a second aspect, a combined polishing positioning device is provided, comprising multiple polishing positioning structures connected sequentially to form a ring. This enables simultaneous positioning and polishing of more workpieces within a limited space, significantly improving batch processing efficiency. The ring structure design allows each polishing positioning structure to move synchronously around the same center. Combined with the rotational coordination of the polishing structures around this center, it ensures that all workpieces experience uniform force and consistent movement trajectories during polishing, effectively improving the stability and consistency of polishing quality. Simultaneously, the modular combination method allows for flexible adjustment of the device size and the number of polishing positioning structures according to processing requirements, adapting to batch production of workpieces of different specifications and reducing equipment adaptation costs.

[0062] According to an embodiment of the present invention, in a third aspect, in conjunction with Figures 5 to 7 As shown, a polishing apparatus is provided, including a polishing structure, a driving structure, and a combined polishing positioning device. The driving structure is connected to the polishing structure and drives the polishing structure to move. The combined polishing positioning device is disposed on the polishing structure. The polishing structure has an external gear ring 2021, which meshes with the meshing teeth 1011 of the polishing positioning structure, thereby enabling the combined polishing positioning device to rotate when the polishing structure rotates.

[0063] In some embodiments, the polishing structure includes a first polishing structure 2 and a second polishing structure 3. A combined polishing positioning device is disposed between the second polishing structure 3 and the first polishing structure 2. The first polishing structure 2 is connected to a driving structure via a first driving member, and the second polishing structure 3 is connected to the driving structure via a second driving member. The first polishing structure 2 and the second polishing structure 3 rotate at different speeds, thus cooperating to drive the combined polishing positioning device to rotate while simultaneously polishing the workpiece mounted on the combined polishing positioning device.

[0064] More specifically, the first polishing structure 2 includes a mounting member 202 and a first polishing disc 201. The mounting member 202 is connected to the first driving member and to the polishing positioning structure. The first polishing disc 201 is disposed on the mounting member 202.

[0065] The second polishing structure 3 includes a second polishing disk 301, which is connected to the driving structure via a second driving member 304.

[0066] The drive structure includes a first motor and a second motor. A first drive component is connected to the output shaft of the first motor, and the first drive component can be a connecting shaft.

[0067] The second driving component 304 includes a driving tooth 3041 and an internal gear ring. The internal gear ring is connected to the second polishing disk 301. One end of the driving tooth 3041 is connected to the output shaft of the second motor, and the other end of the driving tooth 3041 extends out of the first polishing disk 201 and meshes with the internal gear ring. The first motor and the second motor have different rotational speeds, which in turn causes the first polishing disk 201 and the second polishing disk 301 to rotate at different speeds. In addition, the driving structure can also adopt other structural forms, as long as the rotational speeds of the first polishing disk 201 and the second polishing disk 301 are ensured to be different.

[0068] One end of the fan-shaped plate 101 of the polishing positioning structure is provided with meshing teeth 1011, and the other end of the fan-shaped plate 101 is a smooth surface. A bearing 3042 is provided at the bottom of the drive tooth 3041, and the smooth surface of the fan-shaped plate 101 is in contact with the outer ring of the bearing 3042. An outer gear ring 2021 is provided on the inner side wall of the mounting part 202, and the meshing teeth 1011 mesh with the outer gear ring 2021.

[0069] Both the first polishing disc 201 and the second polishing disc 301 are circular discs. Multiple polishing positioning structures are arranged sequentially along the circumference of the first polishing disc 201. The centers of the first polishing disc 201 and the second polishing disc 301 are concentric with the center point of each polishing positioning structure. A reasonable fan-shaped design allows the polishing positioning structures to completely cover the first polishing disc 201, maximizing space utilization.

[0070] Combination Figure 1 and Figure 2 As shown, the two sides of the fan-shaped plate 101 form a 40-degree angle (because the whole circle is designed in 360°, the nine fan-shaped plates 10 can just fill the first polishing disk 201). The middle part of the large end of the fan-shaped plate 10 adopts a rack structure (the rack structure at the large end has a larger meshing area than the small end, and the rotation of the first polishing disk 201 itself has a certain centrifugal force, which can ensure the stable meshing of the fan-shaped polishing device with the first polishing disk 201). The small end of the fan-shaped plate 10 adopts a circular arc structure.

[0071] In this embodiment, the first polishing structure 2 and the second polishing structure 3 are driven to move at different speeds by a driving structure. Gear meshing drives the combined polishing positioning device to rotate. Simultaneously, the relative movement between the workpiece and the polishing structure, along with the workpiece's own rotation, achieves uniform polishing of the workpiece's outer wall. Specifically:

[0072] Power transmission and rotation drive: The drive structure drives the mounting part 202 of the first polishing structure to rotate (it can rotate clockwise or counterclockwise) through the first drive member. The outer gear ring 2021 on the inner sidewall of the mounting part 202 meshes with the meshing teeth 1011 of the polishing positioning structure, thereby driving the annular combined polishing positioning device composed of multiple polishing positioning structures to revolve around the center as a whole. At the same time, the drive structure drives the second polishing disk 301 to rotate through the second drive member 304 (the drive teeth 3041 mesh with the inner gear ring). The first and second polishing structures rotate at different speeds, forming relative motion.

[0073] Workpiece rotation and polishing: The workpiece is mounted on the rotating clamping station of the polishing positioning structure via a connecting rod assembly, with its extended axis passing through the center of the sector plate 101. When the combined polishing positioning device revolves, the workpiece revolves around the center along with the sector plate. Simultaneously, because the polishing structure contacts the outer wall of the workpiece, and the rotating clamping station and the connecting rod assembly (or the connecting rod assembly and the workpiece) are rotatably connected, the workpiece rotates around its own axis under the action of friction, ensuring that all areas of the outer wall can contact the polishing structure, achieving uniform polishing.

[0074] In some embodiments, the end of the second polishing structure 3 furthest from the first polishing structure 2 is connected to a pressing drive 302, which is adapted to control the distance between the second polishing structure 3 and the first polishing structure 2. The pressing drive 302 is a cylinder, but other structures may also be used.

[0075] Combination Figure 8The shoulder-shaped ring part shown has a conical shoulder 10331, and current SPM polishing equipment typically uses a polishing roller with a constant outer diameter, making it ineffective for polishing this structure. Therefore, in some embodiments, a polishing section 303 is provided on the second polishing structure 3. The polishing section 303 faces the end face of the first polishing structure 2 and protrudes towards the first polishing structure 2. The polishing section 303 is a brush connected to the second polishing disk 301. In operation, when the second polishing disk 301 is pressed down to a set position, the brush polishes the product. In this embodiment, the cooperation between the first and second polishing structures achieves effective polishing of various positions on the ring-shaped part; simultaneously, the polishing section faces the end face of the first polishing structure and protrudes towards it, allowing it to act on the outer surface of the product in a linear manner (i.e., brush polishing), which is particularly suitable for shoulder-shaped ring parts, achieving effective polishing of the inner steps of the shoulder-shaped ring part.

[0076] The specific working process of the above-mentioned polishing equipment is as follows:

[0077] The assembled connecting rod assembly 103 is sequentially placed into the arc-shaped positioning area 102 of the sector plate 101. Then, the polishing positioning structure 1 is placed on the first polishing disc 201. During placement, ensure that the small-end arc side of the sector plate 101 is in contact with the bearing 3042, and that the large-end meshing teeth 1011 of the sector plate 101 mesh with the outer gear ring 2021. The second polishing disc 301 is pressed down to the set position by the pressing drive 302.

[0078] Combination Figure 7 As shown, in the working state, the drive structure outputs power to drive the outer gear ring 2021 to rotate. The rotation of the outer gear ring 2021 causes the fan-shaped plate 101 to rotate circumferentially around the drive tooth 3041. At the same time, the connecting rod assembly 103 in the polishing positioning structure 1 rotates around its own connecting rod axis in the groove of the polishing positioning structure 1 under the action of the rotational friction of the first polishing disk 201.

[0079] In the working state, the second polishing disc 301, the brush, the first polishing disc 201, the polishing positioning structure 1, and the outer gear ring 2021 all rotate circumferentially around the drive tooth 3041. The brush can effectively and continuously contact the shoulder annular surface that needs to be polished, thereby completing the polishing of the shoulder annular surface.

[0080] The polishing positioning structure 1 can be used alone or multiple polishing positioning structures 1 can be used simultaneously. The included angle between the two fan-shaped sides of the polishing positioning structure 1 is 40°. Nine polishing positioning structures 1 can be arranged in sequence on the grinding disc 9 of the double-sided polishing equipment. The number of polishing positioning structures 1 used can be adjusted at any time according to the production capacity requirements.

[0081] For this equipment, by adjusting the protective sleeve 1034, the maximum outer diameter surface and the shoulder annular surface of the part can be polished simultaneously, or other parts of the workpiece can be polished separately. When the shoulder annular surface of the workpiece needs to be polished, the maximum outer diameter surface of the product can be protected by adding the protective sleeve 1034. Similarly, when the maximum outer diameter surface needs to be polished, the shoulder annular surface can be protected by adding the protective sleeve 1034.

[0082] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A polishing positioning structure, characterized in that, include: A fan-shaped plate (101) includes an outer arc edge, and at least one arc-shaped positioning area (102) is provided on the fan-shaped plate (101), the extension direction of the arc-shaped positioning area (102) is the same as the extension direction of the outer arc edge; Multiple rotating clamping stations are arranged at intervals within the arc-shaped positioning area (102) along the extension direction of the arc-shaped positioning area (102) to rotate and clamp the corresponding workpieces so that the extension line of the axis of the workpiece passes through the center of the outer arc edge.

2. The polishing positioning structure according to claim 1, characterized in that, One end of the outer arc edge is provided with a meshing tooth (1011), and the fan-shaped plate (101) also includes a smooth edge, which is provided on both sides of the fan-shaped plate (101) along with the outer arc edge.

3. The polishing positioning structure according to claim 1, characterized in that, The arc-shaped positioning area (102) is an arc-shaped hole.

4. The polishing positioning structure according to claim 1, characterized in that, The rotating clamping station includes mounting holes (1021) on the arc-shaped wall within the arc-shaped positioning area (102).

5. The polishing positioning structure according to claim 4, characterized in that, There are two mounting holes (1021), and the extension line connecting the two mounting holes (1021) passes through the center of the outer arc edge.

6. The polishing positioning structure according to claim 1, characterized in that, The rotating clamping station is equipped with a connecting rod assembly, which is suitable for positioning the workpiece; The rotating clamping station is rotatably connected to the rod assembly, or the rod assembly is rotatably connected to the workpiece.

7. The polishing positioning structure according to any one of claims 1-6, characterized in that, Multiple arc-shaped positioning areas (102) are provided, and each arc-shaped positioning area (102) is arranged at radial intervals along the fan-shaped plate (101).

8. A combined polishing positioning device, characterized in that, include: The polishing positioning structure (1) according to any one of claims 2-7, wherein each of the polishing positioning structures (1) is connected in sequence to form a ring.

9. A polishing device, characterized in that, include: Polished structure; A driving structure, which is connected to and drives the polishing structure to move; The combined polishing positioning device according to claim 8, wherein the combined polishing positioning device is disposed on the polishing structure; The polishing structure has an outer toothed ring (2021), which engages with the meshing teeth (1011) of the polishing positioning structure.

10. The polishing equipment according to claim 9, characterized in that, The polishing structure includes: First polishing structure (2); The second polishing structure (3) is provided, and the combined polishing positioning device is disposed between the second polishing structure (3) and the first polishing structure (2); the first polishing structure (2) and the second polishing structure (3) are respectively connected to the driving structure through driving components; The second polishing structure (3) is provided with a polishing part (303), which faces the end face of the first polishing structure (2) and protrudes in the direction of the first polishing structure (2).

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