A polishing apparatus for annular workpieces and a method of using the same

Abstract

The present application belongs to the technical field of polishing, and particularly relates to a polishing device for annular workpieces and a use method thereof. The polishing device comprises a rack, a feeding assembly and a discharging assembly arranged on the rack, and a polishing assembly. The polishing assembly comprises a rotating disc and a polishing member. The rotating disc is arranged on the rack and connected with a driving assembly to rotate circumferentially. A plurality of notches for accommodating workpieces are uniformly distributed along the circumferential direction of the rotating disc. The feeding assembly and the discharging assembly are respectively arranged at two different notches. The rotating speed of the rotating disc comprises a polishing speed and a discharging speed, and the polishing speed is greater than the discharging speed. The polishing member is coaxially fixed around the rotating disc and arranged on the rack outside the rotating disc. The polishing member is used for polishing the outer periphery of the workpiece rotating with the rotating disc. The workpiece is positioned by adopting the form of the rotating disc. The rotating disc can simultaneously accommodate a plurality of workpieces, and the positioning mode is simple and the production efficiency is high.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of polishing, and particularly relates to a polishing device for ring-shaped workpieces and a use method thereof. BACKGROUND

[0002] Ring-shaped workpieces are widely used in industry or life, and the surface quality thereof is an important reference for judging the quality of the ring-shaped workpieces. Therefore, after the ring-shaped workpieces are processed, the particles and impurities on the surfaces thereof need to be removed to obtain a smooth surface.

[0003] Polishing refers to a processing method for reducing the surface roughness of a workpiece by mechanical, chemical or electrochemical action to obtain a bright and smooth surface. Agricultural machinery workpieces include many ring-shaped workpieces, and the inner and outer surfaces of the ring-shaped workpieces need to be polished.

[0004] The current polishing and grinding devices, such as the polishing device for polishing ring-shaped workpieces with a patent number CN114952582B, can only polish a single ring-shaped workpiece at a time, and still need to be clamped, which is low in efficiency. SUMMARY

[0005] The present application aims to solve the above technical problems and provides a polishing device for ring-shaped workpieces and a use method thereof, which achieves the effects of simple positioning mode and high production efficiency.

[0006] Therefore, the present application provides a polishing device for ring-shaped workpieces, which comprises a rack, an upper feeding assembly and a lower feeding assembly arranged on the rack, and a polishing assembly.

[0007] A turntable is arranged on the rack and connected with the driving assembly to rotate circumferentially. A plurality of notches for accommodating workpieces are uniformly distributed on the turntable along the circumferential direction. The upper feeding assembly and the lower feeding assembly are respectively arranged at two different notches. The rotation speed of the turntable comprises a polishing speed and a feeding speed, and the polishing speed is greater than the feeding speed.

[0008] A polishing member is coaxially fixed to the turntable and arranged on the rack outside the turntable. The polishing member is used to polish the outer periphery of the workpiece rotating with the turntable.

[0009] In the technical solution, the workpiece is positioned by using the form of the turntable. The turntable can accommodate multiple workpieces at the same time. The workpiece is close to the polishing member under the action of centrifugal force when the turntable rotates. The polishing member polishes the outer periphery of the workpiece. The workpiece rotates under the action of polishing resistance. The polishing of the entire circumferential surface of the outer circle of the workpiece is realized after the turntable rotates at high speed for multiple turns. One turntable can accommodate multiple workpieces at the same time, and the positioning mode is simple and the production efficiency is high.

[0010] Further, the grinding and polishing piece comprises a grinding and polishing ring and side plates arranged on both sides of the grinding and polishing ring, and a grinding belt is fixedly arranged on the inner wall of the grinding and polishing ring.

[0011] Further, the grinding and polishing piece axis is horizontal, and the grinding and polishing piece comprises a first arc segment and a second arc segment, and the first arc segment and the second arc segment are both fixedly arranged on the rack, and the inner diameter of the first arc segment is smaller than the inner diameter of the second arc segment.

[0012] In the technical solution, through the change of the diameters of the two segments, the workpiece can experience the change of position in the process of high-speed rotation of the rotating disc, especially at the joint of the first arc segment and the second arc segment, so as to further promote the circumferential rotation of the workpiece, and the polishing of the entire circumferential surface of the outer circle of the workpiece can be realized after the high-speed rotation of the rotating disc for multiple rounds.

[0013] Further, the first arc segment and the second arc segment are fixedly connected at one end, and a feeding opening is left between the other end of the first arc segment and the second arc segment, and the feeding assembly is arranged at the feeding opening.

[0014] Further, the feeding assembly comprises:

[0015] A feeding track, which is arranged to be inclined towards the feeding opening;

[0016] A baffle, which is arranged between the feeding opening and the feeding track, and the baffle is connected with the piston rod of the feeding cylinder, and the feeding cylinder is used to drive the baffle to move, so as to open or close the feeding opening.

[0017] Further, the second arc segment comprises a fixed segment and a moving segment, the fixed segment is provided with a discharging opening, the moving segment is slidably connected with the fixed segment, the moving segment is connected with the discharging assembly, and the discharging assembly can drive the moving segment to move away from the discharging opening.

[0018] Further, the discharging assembly comprises:

[0019] A discharging cylinder, which is fixedly arranged on the rack;

[0020] A driving plate, which is provided with a first connecting part outwardly protruding therefrom, and the first connecting part is fixedly connected with the moving segment;

[0021] A conveying belt, which is lower than the discharging opening, and the conveying belt and the discharging cylinder are arranged on both sides of the rotating disc.

[0022] In the technical solution, when the polishing is finished, the rotating disc rotates at the unloading speed to start intermittent rotation, the unloading cylinder intermittently pushes the moving section to move away from the unloading port along with the intermittent rotation of the rotating disc, so that the moving section intermittently takes the workpiece away to fall on the conveying belt until all the workpieces on the rotating disc are unloaded, the unloading cylinder piston retracts to reset the moving section, then the loading cylinder is started, the loading port is opened, the workpiece on the loading track is gradually moved into the notch of the rotating disc, when the workpiece is loaded in each notch of the rotating disc, the loading port is closed, and the rotating disc starts high-speed rotation at the polishing speed for the next polishing.

[0023] Further, the polishing device further comprises an unloading assembly arranged at one end of the conveying belt away from the rotating disc, and the unloading assembly comprises:

[0024] A first unloading cylinder is arranged at the side of the conveying belt, and the piston rod of the first unloading cylinder is perpendicular to the length direction of the conveying belt. A displacement plate is arranged above the end of the conveying belt;

[0025] A visual detector is arranged below the conveying belt and is used to detect the appearance of the polished workpiece;

[0026] A second unloading cylinder is arranged at the side of the conveying belt away from the first unloading cylinder, and the piston rod of the second unloading cylinder is perpendicular to the piston rod of the first unloading cylinder.

[0027] In the technical solution, the workpiece is transmitted to below the visual detector after being polished, the visual detector detects the appearance of the workpiece, at this time, the workpiece is still on the conveying belt, but the workpiece cannot continue to be transmitted due to the existence of the displacement plate, so only rotation can occur, so that the visual detector can detect the polished surface of the workpiece at multiple angles, then the first unloading cylinder pushes the workpiece to move out of the conveying belt, and then the second unloading cylinder pushes the workpiece to move out of the polishing device.

[0028] Further, the method for using the polishing device comprises the following steps:

[0029] S1: loading, the rotating disc rotates intermittently at the unloading speed, the loading cylinder is started, the loading port is opened, the workpiece on the loading track is gradually moved into the notch of the rotating disc, and when the workpiece is loaded in each notch of the rotating disc, the loading port is closed;

[0030] S2: polishing, the rotating disc starts high-speed rotation at the polishing speed to polish the workpiece, the workpiece changes during the high-speed rotation of the rotating disc, especially at the joint of the first arc segment and the second arc segment, which promotes the circumferential rotation of the workpiece itself, and the polishing of the entire circumferential surface of the outer circle of the workpiece is completed after the rotating disc rotates for a predetermined number of times.

[0031] S3: blanking, the rotating disc is rotated to the blanking speed and starts intermittent rotation, the blanking cylinder intermittently pushes the moving section to leave the blanking port along with the intermittent rotation of the rotating disc, so that the moving section intermittently takes the workpiece away and falls on the conveying belt until all the workpieces on the rotating disc are completed, then the blanking cylinder piston retracts to reset the moving section;

[0032] S4: discharging, the workpiece is polished and falls on the conveying belt after blanking, the conveying belt transmits the workpiece to the lower side of the visual detector, the visual detector detects the appearance of the workpiece, at this time, the workpiece is still on the conveying belt, but the workpiece is hindered from continuing to transmit due to the existence of the displacement plate, so the workpiece rotates, the visual detector detects the polished surface of the single workpiece at multiple angles, then the first discharging cylinder pushes the workpiece to move out of the conveying belt, and finally the second discharging cylinder pushes the workpiece to move out of the polishing equipment.

[0033] The beneficial effects of the present application are:

[0034] 1. The workpiece is positioned by adopting the form of a rotating disc, the rotating disc can accommodate multiple workpieces at the same time, the rotating disc is rotated to make the workpiece approach the grinding and polishing piece under the action of centrifugal force, the grinding and polishing piece polishes the outer periphery of the workpiece, and the workpiece can rotate under the action of polishing resistance, the polishing of the entire circumferential surface of the outer circle of the workpiece is realized after the rotating disc rotates at high speed for multiple turns, one rotating disc can accommodate multiple workpieces at the same time, and the positioning mode is simple and the production efficiency is high.

[0035] 2. The workpiece can experience position changes in the process of high-speed rotation of the rotating disc through the change of the diameters of the two sections, especially at the junction of the first arc section and the second arc section, thereby further promoting the circumferential rotation of the workpiece, and the polishing of the entire circumferential surface of the outer circle of the workpiece is realized after the rotating disc rotates at high speed for multiple turns.

[0036] 3. The workpiece is transmitted to the lower side of the visual detector from the conveying belt after polishing, the visual detector detects the appearance of the workpiece, at this time, the workpiece is still on the conveying belt, but the workpiece is hindered from continuing to transmit due to the existence of the displacement plate, so the workpiece can only rotate, so the visual detector can detect the polished surface of the single workpiece at multiple angles, then the first discharging cylinder pushes the workpiece to move out of the conveying belt, and then the second discharging cylinder pushes the workpiece to move out of the polishing equipment. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 is a perspective view of the present application;

[0038] Figure 2 is Figure 1 is a partial enlarged view of A in

[0039] Figure 3 is a schematic view of the polishing assembly;

[0040] Figure 4 is a front view of the present application;

[0041] Figure 5 is Figure 4 a partial enlarged view of B in FIG. 4;

[0042] Figure 6 is Figure 1 a partial enlarged view of C in FIG. 4;

[0043] indicated in the figure as:

[0044] 1, rack; 2, feeding assembly; 3, discharging assembly; 4, polishing assembly; 5, rotating disc; 6, polishing piece; 7, driving assembly; 8, notch; 9, polishing ring; 10, side plate; 11, first arc segment; 12, second arc segment; 13, feeding port; 14, feeding track; 15, baffle; 16, fixed segment; 17, moving segment; 18, discharging port; 19, discharging cylinder; 20, driving plate; 21, conveying belt; 22, first connecting part; 23, first discharging cylinder; 24, visual detector; 25, second discharging cylinder; 26, displacement plate; 27, workpiece. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art belong to the scope of protection of the present application.

[0046] In the description of the present application, it should be noted that the terms used herein are only intended to describe specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For the convenience of description, the sizes of the various parts shown in the drawings are not drawn in accordance with the actual proportional relationship. The techniques, methods and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered as part of the authorized description. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, and not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0047] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0048] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0049] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0050] Example 1

[0051] like Figures 1-3As shown, a polishing device for annular workpieces 27 includes a frame 1, on which a feeding assembly 2 and a discharging assembly 3 are mounted, and a polishing assembly 4, which includes a turntable 5 and a polishing component 6. The turntable 5 is mounted on the frame 1 and connected to a drive assembly 7, enabling circumferential rotation. Multiple notches 8 for accommodating workpieces 27 are evenly distributed along the circumference of the turntable 5. The feeding assembly 2 and the discharging assembly 3 are respectively positioned at two different notches 8. The rotational speed of the turntable 5 includes both a polishing speed and a discharging speed, with the polishing speed being greater than the discharging speed. The polishing component 6 is coaxially and fixedly mounted on the frame 1 outside the turntable 5, and is used to polish the outer circumference of the workpiece 27 as it rotates with the turntable 5.

[0052] By using a turntable 5 to position the workpiece 27, the turntable 5 can accommodate multiple workpieces 27 at the same time. Rotating the turntable 5 causes the workpiece 27 to move closer to the polishing part 6 under the action of centrifugal force. The polishing part 6 polishes the outer circumference of the workpiece 27 and can cause the workpiece 27 to rotate under the action of polishing resistance. After the turntable 5 rotates at high speed for multiple revolutions, the entire circumference of the outer ring of the workpiece 27 is polished. One turntable 5 can accommodate multiple workpieces 27 at the same time, and the positioning method is simple and the production efficiency is high.

[0053] The polishing component 6 includes a polishing ring 9 and side plates 10 disposed on both sides of the polishing ring 9. A sanding belt is fixedly disposed on the inner wall of the polishing ring 9. The axis of the polishing component 6 is horizontal. The polishing component 6 includes a first arc segment 11 and a second arc segment 12. Both the first arc segment 11 and the second arc segment 12 are fixedly disposed on the frame 1. The inner diameter of the first arc segment 11 is smaller than the inner diameter of the second arc segment 12.

[0054] By changing the diameter of the two segments, the workpiece 27 can undergo a change in position during the high-speed rotation of the turntable 5, especially at the junction of the first arc segment 11 and the second arc segment 12, thereby further promoting the circumferential rotation of the workpiece 27 itself. After the turntable 5 rotates multiple times at high speed, the entire circumferential surface of the outer ring of the workpiece 27 can be polished.

[0055] Example 2

[0056] like Figures 1-3 As shown, the first arc segment 11 and the second arc segment 12 are fixedly connected at one end, and a feeding port 13 is provided between the other end of the first arc segment 11 and the second arc segment 12. The feeding assembly 2 is disposed at the feeding port 13. The feeding assembly 2 includes a feeding track 14 and a baffle 15. The feeding track 14 is inclined toward the feeding port 13. The baffle 15 is disposed between the feeding port 13 and the feeding track 14. The baffle 15 is connected to the piston rod of the feeding cylinder. The feeding cylinder is used to drive the baffle 15 to move, so that the feeding port 13 opens or closes.

[0057] Example 3

[0058] As Figures 2-5 shown in the figure, the second arc segment 12 includes a fixed segment 16 and a moving segment 17, the fixed segment 16 is provided with a discharging port 18, the moving segment 17 is slidingly connected with the fixed segment 16, the moving segment 17 is connected with the discharging assembly 3, and the discharging assembly 3 can drive the moving segment 17 to move away from the discharging port 18.

[0059] The discharging assembly 3 includes a discharging cylinder 19, a driving plate 20 and a conveying belt 21. The discharging cylinder 19 is fixedly arranged on the rack 1; the driving plate 20 is outwardly provided with a first connecting part 22, the first connecting part 22 is fixedly connected with the moving segment 17; and the conveying belt 21 is lower than the discharging port 18, and the conveying belt 21 is separately arranged on both sides of the turntable 5 with the discharging cylinder 19.

[0060] When the polishing is finished, the turntable 5 starts intermittent rotation at the discharging speed, the discharging cylinder 19 intermittently pushes the moving segment 17 away from the discharging port 18 along with the intermittent rotation of the turntable 5, so that the moving segment 17 intermittently takes the workpiece 27 away from the conveying belt 21, until all the workpieces 27 on the turntable 5 are finished discharging, then the moving segment 17 is reset by the retraction of the piston of the discharging cylinder 19, and then the feeding cylinder is started to open the feeding port 13, so that the workpieces 27 on the feeding track 14 are gradually moved into the notch 8 of the turntable 5, when the notch 8 of the turntable 5 is filled with the workpieces 27, the feeding port 13 is closed, and the turntable 5 starts high-speed rotation at the polishing speed for the next polishing.

[0061] Example four

[0062] As Figure 6 shown in the figure, the discharging assembly is arranged at the end of the conveying belt 21 away from the turntable 5, and the discharging assembly includes a first discharging cylinder 23, a visual detector 24 and a second discharging cylinder 25. The first discharging cylinder 23 is arranged on the side of the conveying belt 21, the piston rod of the first discharging cylinder 23 is perpendicular to the length direction of the conveying belt 21, and the end of the conveying belt 21 is provided with a displacement plate 26 above; the visual detector 24 is used for detecting the appearance of the polished workpiece 27; and the second discharging cylinder 25 is arranged on the side of the conveying belt 21 away from the first discharging cylinder 23, and the piston rod of the second discharging cylinder 25 is perpendicular to the piston rod of the first discharging cylinder 23.

[0063] After the workpiece 27 is polished, it is transmitted to the lower side of the visual detector 24 from the conveying belt 21, and the visual detector 24 detects the appearance of the workpiece 27, at this time, the workpiece 27 is still on the conveying belt 21, but the workpiece 27 cannot continue to be transmitted due to the existence of the displacement plate 26, so it can only rotate, so that the visual detector 24 can detect the polished surface of the single workpiece 27 at multiple angles, then the first discharging cylinder 23 pushes the workpiece 27 to move out of the conveying belt 21, and then the second discharging cylinder 25 pushes the workpiece 27 to move out of the polishing equipment.

[0064] The method for using the polishing device comprises the following steps:

[0065] S1: loading, the rotating disc 5 rotates intermittently at a loading speed, the loading cylinder is started, the loading opening 13 is opened, the workpiece 27 on the loading track 14 is moved step by step into the notch 8 of the rotating disc 5, when the workpiece 27 is loaded in each notch 8 of the rotating disc 5, the loading opening 13 is closed;

[0066] S2: polishing, the rotating disc 5 starts to rotate at a high speed for polishing the workpiece 27, the workpiece 27 changes in the process of the high-speed rotation of the rotating disc 5, especially at the joint of the first arc segment 11 and the second arc segment 12, which promotes the circumferential rotation of the workpiece 27, and the polishing of the entire circumferential surface of the outer circle of the workpiece 27 is completed after the rotating disc 5 rotates for a predetermined number of circles;

[0067] S3: unloading, the rotating disc 5 rotates at an unloading speed and starts to rotate intermittently, the unloading cylinder 19 pushes the moving section 17 away from the unloading opening 18 intermittently along with the intermittent rotation of the rotating disc 5, so that the moving section 17 intermittently takes the workpiece 27 away and falls on the conveying belt 21, until all the workpieces 27 on the rotating disc 5 are unloaded, the piston of the unloading cylinder 19 retracts to reset the moving section 17;

[0068] S4: discharging, the workpiece 27 is polished and then unloaded to fall on the conveying belt 21, the conveying belt 21 transmits the workpiece 27 to below the visual detector 24, the visual detector 24 detects the appearance of the workpiece 27, at this time, the workpiece 27 is still on the conveying belt 21, but the workpiece 27 cannot continue to be transmitted due to the existence of the displacement plate 26, so the workpiece 27 rotates, the visual detector 24 detects the polished surface of the workpiece 27 at multiple angles, then the first discharging cylinder 23 pushes the workpiece 27 to move out of the conveying belt 21, and finally the second discharging cylinder 25 pushes the workpiece 27 to move out of the polishing device.

[0069] The embodiments of the present application are described above in combination with the drawings, the embodiments and the features in the embodiments in the present application can be combined with each other without conflict, the present application is not limited to the above-mentioned specific embodiments, the above-mentioned specific embodiments are only illustrative, but not limited, the ordinary skilled in the art can make many forms without departing from the purpose of the present application and the scope protected by the claims under the guidance of the present application, which all belong to the protection of the present application.

Claims

1. A polishing apparatus for a ring-shaped workpiece (27), characterized by The utility model relates to a polishing device, including frame (1), be provided with feeding assembly (2) and discharging assembly (3) on frame (1), still include polishing assembly (4), the polishing assembly (4) includes: Rotating disc (5), rotating disc (5) is set up on frame (1) with drive assembly (7) connection can rotate peripherally, rotating disc (5) is uniformly distributed with a plurality of gap (8) for accommodating workpiece (27) along the circumferential direction, above-mentioned feeding assembly (2) and discharging assembly (3) are correspondingly set up at two different gap (8), rotating disc (5) rotating speed includes polishing speed and discharging speed, and polishing speed is greater than discharging speed; Grinding and polishing piece (6), grinding and polishing piece (6) is coaxially fixed ring and set up on the frame (1) outside rotating disc (5), and grinding and polishing piece (6) is used for polishing the outer periphery of workpiece (27) along with rotating disc (5) rotation; The grinding and polishing piece (6) includes a grinding and polishing ring (9) and side plates (10) disposed on both sides of the grinding and polishing ring (9), and a sand belt is fixedly arranged on the inner wall of the grinding and polishing ring (9). The axis of the grinding and polishing piece (6) is horizontal, and the grinding and polishing piece (6) includes a first arc segment (11) and a second arc segment (12), both of which are fixedly arranged on the frame (1), and the inner diameter of the first arc segment (11) is smaller than that of the second arc segment (12). The first arc segment (11) is fixedly connected to one end of the second arc segment (12), and a feeding opening (13) is left between the other end of the first arc segment (11) and the second arc segment (12), and the feeding assembly (2) is arranged at the feeding opening (13). The feeding assembly (2) includes: A feeding track (14) is inclinedly arranged towards the feeding opening (13); A baffle (15) is arranged between the feeding opening (13) and the feeding track (14), and the baffle (15) is connected to the piston rod of a feeding cylinder, and the feeding cylinder is used to drive the baffle (15) to move, so that the feeding opening (13) is opened or closed. The second arc segment (12) includes a fixed segment (16) and a moving segment (17), the fixed segment (16) is provided with a discharging opening (18), the moving segment (17) is slidably connected to the fixed segment (16), the moving segment (17) is connected to the discharging assembly (3), and the discharging assembly (3) can drive the moving segment (17) to move away from the discharging opening (18). The discharging assembly (3) includes: A discharging cylinder (19) is fixedly arranged on the frame (1); A driving plate (20) is provided with a first connecting part (22) outwardly protruding therefrom, and the first connecting part (22) is fixedly connected to the moving segment (17); A conveyor belt (21) is arranged below the discharging opening (18), and the conveyor belt (21) and the discharging cylinder (19) are arranged on both sides of the rotating disc (5).

2. A polishing apparatus for a ring-shaped workpiece (27) according to claim 1, characterized by It further includes a discharging assembly, which is arranged at one end of the conveyor belt (21) away from the rotating disc (5), and the discharging assembly includes: A first discharging cylinder (23) is arranged at the side of the conveying belt (21), and the piston rod of the first discharging cylinder (23) is perpendicular to the length direction of the conveying belt (21), and a displacement plate (26) is arranged above the end of the conveying belt (21); A visual detector (24) is arranged below the conveying belt (21) and is used for detecting the appearance of the polished workpiece (27); A second discharging cylinder (25) is arranged at the side of the conveying belt (21) away from the first discharging cylinder (23), and the piston rod of the second discharging cylinder (25) is perpendicular to the piston rod of the first discharging cylinder (23).

3. A method of using a polishing apparatus, using the polishing apparatus for a ring-shaped workpiece (27) according to claim 2, characterized by, The method comprises the following steps: S1: feeding, the rotating disc (5) is intermittently rotated at a feeding speed, the feeding cylinder is started, the feeding opening (13) is opened, the workpiece (27) on the feeding track (14) is gradually moved into the notch (8) of the rotating disc (5), and when the workpiece (27) is arranged in each notch (8) of the rotating disc (5), the feeding opening (13) is closed; S2: polishing, the rotating disc (5) is rotated at a polishing speed to polish the workpiece (27), the workpiece (27) is changed in the process of high-speed rotation of the rotating disc (5), especially at the joint of the first arc segment (11) and the second arc segment (12), the circumferential rotation of the workpiece (27) is promoted, and the polishing of the entire circumferential surface of the workpiece (27) is completed after the rotating disc (5) is rotated at a predetermined speed; S3: discharging, the rotating disc (5) is rotated at a discharging speed to start intermittent rotation, the discharging cylinder (19) intermittently pushes the moving section (17) away from the discharging opening (18) along with the intermittent rotation of the rotating disc (5), the moving section (17) intermittently takes the workpiece (27) away from the conveying belt (21), and the discharging cylinder (19) is retracted to reset the moving section (17) after all the workpieces (27) on the rotating disc (5) are discharged; S4: discharging, the workpiece (27) is polished and then discharged onto the conveying belt (21), the conveying belt (21) transmits the workpiece (27) to below the visual detector (24), the visual detector (24) detects the appearance of the workpiece (27), the workpiece (27) is still on the conveying belt (21), but the workpiece (27) is hindered from being continuously transmitted due to the existence of the displacement plate (26), the workpiece (27) is rotated, the visual detector (24) detects the polished surface of the workpiece (27) at multiple angles, the first discharging cylinder (23) pushes the workpiece (27) out of the conveying belt (21), and finally the second discharging cylinder (25) pushes the workpiece (27) out of the polishing equipment.

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