Polishing clamp

Abstract

The utility model provides a polishing clamp which is used for clamping a workpiece, the workpiece comprises two end plates and a plurality of stand columns, the two end plates are arranged in a spaced mode, the stand columns are located between the two end plates, the two ends of each stand column are connected with the two end plates correspondingly, and the polishing clamp comprises a rack which is internally provided with a containing space; the two clamping assemblies are both located in the containing space and both rotatably connected to the rack, the two clamping assemblies are arranged in a spaced mode, and the two clamping assemblies are used for clamping two end plates of the workpiece correspondingly; and the driving part is connected with at least one clamping assembly, and the driving part is used for driving the corresponding clamping assembly to rotate so as to enable the workpiece to rotate. According to the polishing clamp provided by the invention, each clamping assembly can clamp and fix one end plate, so that the workpiece is kept in the accommodating space. Working personnel can polish the workpiece under the condition that the workpiece is not manually fixed, and the workpiece polishing convenience can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of photovoltaic and semiconductor product production, and particularly relates to a polishing clamp. BACKGROUND

[0002] A boat is a carrier for transporting wafer-shaped materials such as silicon wafers in the process of photovoltaic and semiconductor product production. After the boat is assembled, it needs to be polished to improve the smoothness of the post surface and reduce the probability of damage to the wafer-shaped material due to burrs on the post surface. At present, in order to avoid the movement of the boat during polishing, the worker needs to keep the hand-held fixation of the boat, which is inconvenient to operate. CONTENT OF THE UTILITY MODEL

[0003] In view of the above, it is necessary to provide a polishing clamp to solve the above defects.

[0004] Embodiments of the present application provide a polishing clamp for clamping a workpiece, the workpiece comprising two end plates and a plurality of posts, the two end plates being spaced apart, the plurality of posts being located between the two end plates, and two ends of each post being connected to the two end plates respectively, the polishing clamp comprising: a rack, a receiving space being formed in the rack; two clamping assemblies, the two clamping assemblies being located in the receiving space and being rotatably connected to the rack, the two clamping assemblies being spaced apart, and the two clamping assemblies being used for clamping the two end plates of the workpiece respectively; and a driving member, the driving member being connected to at least one clamping assembly, and the driving member being used for driving the corresponding clamping assembly to rotate so as to rotate the workpiece.

[0005] Optionally, the rack comprises: a bottom plate; two connecting seats, the two connecting seats being arranged on the bottom plate and being spaced apart, and the two connecting seats and the bottom plate cooperating to form the receiving space, and the two clamping assemblies being rotatably connected to the two connecting seats respectively.

[0006] Optionally, a plurality of through holes for dust passing through are formed in the bottom plate, and the rack further comprises: two supporting seats, the two supporting seats being spaced apart, and the bottom plate being arranged on the two supporting seats; and a collecting box, the collecting box being movably connected to the two supporting seats and / or the bottom plate, the collecting box being located at the bottom of the bottom plate and between the two supporting seats, and the collecting box being used for collecting the dust passing through the through holes.

[0007] Optionally, each clamping assembly comprises: a positioning member, the positioning member being rotatably connected to the rack, and the positioning member being used for receiving the corresponding end plate; and a clamping member, the clamping member being detachably connected to the positioning member, and the clamping member being used for abutting against the corresponding end plate to clamp the corresponding end plate together with the positioning member.

[0008] Optionally, the clamping member is used to abut against the first side of the corresponding end plate, the positioning member comprises: a connecting portion, the connecting portion is rotatably connected to the rack, the connecting portion is used to abut against the side of the corresponding end plate which is away from the other end plate; a first protrusion, the first protrusion is arranged on the connecting portion, the first protrusion is used to abut against the second side of the end plate, wherein the first side and the second side of the end plate are arranged oppositely; a second protrusion, the second protrusion is arranged on the connecting portion, the second protrusion is used to abut against the third side and / or the fourth side of the end plate, wherein the third side and the fourth side of the end plate are arranged oppositely.

[0009] Optionally, the clamping member comprises: a first clamping portion, the first clamping portion is detachably connected to the positioning member, and the first clamping portion is used to abut against the first side of the corresponding end plate; a second clamping portion, the second clamping portion is connected with the first clamping portion, the second clamping portion is arranged at an angle with the first clamping portion, and the second clamping portion is used to abut against the side of the corresponding end plate which faces the corresponding first protrusion.

[0010] Optionally, the polishing clamp further comprises: a cover, the cover is covered on the rack, at least one side of the cover is open, and the opening of the cover is communicated with the accommodation space.

[0011] Optionally, a dust suction port is arranged on the cover, and the polishing clamp further comprises: a connecting pipe, the connecting pipe is connected with the cover and communicated with the dust suction port, and the connecting pipe is used to connect a dust suction device to realize suction of dust on the polishing clamp.

[0012] Optionally, the polishing clamp further comprises: a shaft coupling, the shaft coupling is connected with the driving member and the corresponding clamping assembly; a mounting frame, the mounting frame is connected to the rack, the shaft coupling is arranged in the mounting frame, and the driving member is mounted on the mounting frame.

[0013] Optionally, the polishing clamp further comprises: two shaft members, the two shaft members are respectively mounted on the two clamping assemblies, the two shaft members are rotatably connected to the rack, and the shaft coupling is connected with the corresponding shaft member to realize connection with the corresponding clamping assembly.

[0014] Through the polishing clamp provided in the application, each clamping assembly can clamp and fix one end plate, so that the workpiece is kept in the accommodation space. The worker can realize polishing of the workpiece without manually fixing the workpiece, and the convenience of polishing of the workpiece can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic diagram of the polishing clamp and the workpiece in the embodiment of the application.

[0016] Figure 2 is a structural schematic diagram of the workpiece in the embodiment of the application.

[0017] Figure 3 is a first structural exploded view of the polishing clamp in the embodiment of the application.

[0018] Figure 4 is a second structure exploded view of the polishing clamp in the embodiment of the present application.

[0019] Figure 5 is a structure schematic view of the clamping assembly in the embodiment of the present application.

[0020] Main element symbol explanation:

[0021] 100, polishing clamp; 101, containing space; 10, rack; 11, support seat; 12, connecting seat; 13, bottom plate; 131, through hole; 14, collection box; 20, clamping assembly; 21, positioning piece; 211, connecting part; 212, first protrusion; 213, second protrusion; 22, clamping piece; 221, first clamping part; 222, second clamping part; 30, driving piece; 40, mounting frame; 50, shaft coupling; 60, shaft piece; 70, cover; 71, dust suction port; 80, connecting pipe; 200, workpiece; 201, end plate; 202, column. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely 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, not all the embodiments.

[0023] The plurality of in the present application refers to two or more. In addition, it should be understood that in the description of the present application, the words "first", "second", etc. are used only for the purpose of distinguishing the description, and cannot be understood as indicating or implying relative importance, nor can it be understood as indicating or implying order.

[0024] In the description of the embodiments of the present application, the words "exemplary" or "for example" are used to mean as an example, illustration, or description. Any embodiment or design scheme described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. Rather, the words "exemplary" or "for example" are used in the specific manner to present the relevant concept.

[0025] Please refer to Figure 1 and Figure 2 , Figure 1 shows a polishing clamp 100 provided by the present application, Figure 2 shows a workpiece 200 provided by the present application. In the embodiments of the present application, the polishing clamp 100 can clamp the workpiece 200 and drive the workpiece 200 to rotate, so that the worker can polish the workpiece 200 from different angles.

[0026] The workpiece 200 can be a boat for loading a plurality of sheet materials (not shown) in a photovoltaic and semiconductor product processing process. The workpiece 200 can include two end plates 201 and a plurality of columns 202. The two end plates 201 can be spaced apart along the height direction of the workpiece 200, and the plurality of columns 202 can be spaced apart along the width direction and the length direction of the workpiece 200 and located between the two end plates 201. Both ends of each column 202 are fixedly connected with the two end plates 201. The polishing clamp 100 can clamp the workpiece 200 by abutting against the two end plates 201, so that the worker can polish the plurality of columns 202.

[0027] It can be understood that a plurality of clamping grooves (not shown) can be formed on each column 202, and each clamping groove can accommodate at least one sheet material, so as to load the plurality of sheet materials on the workpiece 200. By polishing the column 202, burrs on the column 202 can be reduced, thereby reducing the probability of damage to the sheet material due to collision with the burrs on the column 202.

[0028] In the embodiments of the present application, the material of the workpiece 200 is not specifically limited. For example, the material of the workpiece 200 can be, but is not limited to, silicon carbide.

[0029] In the embodiments of the present application, the type of the sheet material is not specifically limited. For example, the sheet material can be, but is not limited to, a silicon wafer, a silicon carbide wafer, or a wafer.

[0030] It can be understood that each end plate 201 can have a first side, a second side, a third side, and a fourth side. The first side and the second side can be opposite sides of the end plate 201 in one of the length direction and the width direction of the end plate 201, and the third side and the fourth side can be opposite sides of the end plate 201 in the other of the length direction and the width direction of the end plate 201. Each end plate 201 can further include two opposite surfaces.

[0031] In the embodiments of the present application, the length direction, the width direction, and the height direction of the polishing clamp 100 can be defined as a first horizontal direction, a second horizontal direction, and a vertical direction, respectively. For example, the first horizontal direction can be the X direction shown in FIG. 1 and the opposite direction thereof, the second horizontal direction can be the Y direction shown in FIG. 1 and the opposite direction thereof, and the vertical direction can be the Z direction shown in FIG. 1 and the opposite direction thereof. Figure 1 Figure 1 Figure 1

[0032] In an embodiment, the polishing clamp 100 can include a rack 10, two clamping assemblies 20, and a driving member 30.

[0033] ​​​The rack 10 can include support seats 11, connecting seats 12, a bottom plate 13 and a collection box 14. The number of support seats 11 can be two. The two support seats 11 can be spaced apart in a first horizontal direction. The bottom plate 13 can be fixedly installed on the two support seats 11. The number of connecting seats 12 can be two. The two connecting seats 12 can be spaced apart in the first horizontal direction and can be fixedly installed on the bottom plate 13. A plurality of through holes 131 can be formed in the bottom plate 13. The plurality of through holes 131 are spaced apart and each through hole 131 penetrates the bottom plate 13 in a vertical direction. The collection box 14 can be located at the bottom of the bottom plate 13 in the vertical direction and is movably connected to the two support seats 11 and / or the bottom plate 13 in a second horizontal direction. The collection box 14 is located between the two support seats 11 in the first horizontal direction. When the collection box 14 enters the space surrounded by the two support seats 11 and the bottom plate 13, each through hole 131 is correspondingly arranged with an opening of the collection box 14. Dust generated by polishing on the bottom plate 13 can enter the collection box 14 through the plurality of through holes 131.

[0034] The two connecting seats 12 and the bottom plate 13 of the rack 10 form a receiving space 101. The two connecting seats 12 form two side walls of the receiving space 101 in the first horizontal direction, and the bottom plate 13 forms a bottom wall of the receiving space 101 in the vertical direction.

[0035] The two clamping assemblies 20 are located in the receiving space 101. The two clamping assemblies 20 are spaced apart in the first horizontal direction and are rotatably connected to the two connecting seats 12, respectively. Each clamping assembly 20 can clamp one end plate 201. The driving member 30 can be connected to at least one clamping assembly 20 and can drive the connected clamping assembly 20 to rotate.

[0036] It can be understood that after the two clamping assemblies 20 clamp the two end plates 201, respectively, a plurality of columns 202 can be presented in the receiving space 101. The worker can hold a polishing device (not shown) to polish the plurality of columns 202.

[0037] When one column 202 of the plurality of columns 202 facing the worker is polished or needs to be polished on the other side, the worker can start the driving member 30. The driving member 30 can drive the connected clamping assembly 20 to rotate, so that the workpiece 200 and the other clamping assembly 20 are driven to rotate, and the other column 202 to be polished or the other side of the column 202 to be polished is rotated to face the worker.

[0038] Thus, the clamping assembly 20 can realize clamping of the workpiece 200, can realize fixation of the workpiece 200 without manual fixation of the workpiece 200 by the worker, can improve the polishing effect of the workpiece 200 and improve the convenience of polishing the workpiece 200; meanwhile, the rotation of the workpiece 200 can be realized through driving of the driving member 30, the worker can select the column 202 to be polished and the side of the column 202 to be polished for polishing, and the convenience of polishing the workpiece 200 can be improved.

[0039] In the embodiments of the present application, the type of the driving member 30 is not specifically limited. For example, the driving member 30 can be, but is not limited to, a motor, a rotary air cylinder and the like.

[0040] It can be understood that a switch (not shown in the figure) can be fixedly installed on the rack 10, and the switch can be electrically connected with the driving member 30. The worker can control the work and stop of the driving member 30 by operating the opening and closing of the switch.

[0041] Please refer to Figure 3 and Figure 4 In some embodiments, the polishing clamp 100 can further include a mounting frame 40, a shaft coupling 50 and two shaft members 60. The mounting frame 40 is fixedly connected to one side of the connecting seat 12 away from the accommodation space 101. The stator of the driving member 30 is fixedly connected to the mounting frame and is located at the side of the mounting frame away from the connecting seat 12. The two shaft members 60 are respectively fixedly connected to the two clamping assemblies 20. The two shaft members 60 respectively pass through the two connecting seats 12 and are respectively rotatably connected to the two connecting seats 12. The shaft coupling 50 can be located in the mounting frame 40, and one end of the shaft coupling 50 is fixedly connected with the rotor of the driving member 30, and the other end is fixedly connected with the shaft member 60 in the connecting seat 12 where the mounting frame 40 is located. Thus, the shaft coupling 50 cooperates with one shaft member 60 to realize the connection of the driving member 30 and one clamping assembly 20.

[0042] In the embodiments of the present application, the fixed connection and the fixed installation are not specifically limited in the fixed manner. For example, the fixed manner can include, but is not limited to, bolt fixation, welding fixation, key connection fixation, integral molding fixation and the like.

[0043] For example, the shaft member 60 can be a flange shaft, and the flange of the shaft member 60 can be bolted with the corresponding clamping assembly 20; the shaft coupling 50 can be coaxially fixed with the rotor of the driving member 30 and the convex shaft of the shaft member 60 through the spline.

[0044] It can be understood that the rotatable connection can be realized through a rotating connecting member, and can be a connection mode in which two components can rotate relative to each other. In the embodiments of the present application, the type of the rotating connecting member is not specifically limited. For example, the rotating connecting member can be, but is not limited to, a bearing, a hinge and the like.

[0045] It can be understood that the mounting frame 40 can realize the mounting of the driving member 30 and the protection of the coupling 50, and improve the stability of the driving member 30 when driving the workpiece 200 to rotate.

[0046] In some embodiments, the polishing clamp 100 further comprises a cover 70 and a connecting pipe 80. The cover 70 can be covered on the two connecting seats 12 and the bottom plate 13, and the cover 70 is open on one side in the second horizontal direction and / or on the side opposite to the bottom plate 13 in the vertical direction. The opening of the cover 70 can be in communication with the accommodation space 101. The cover 70 is provided with an opening on at least one side in the first horizontal direction. The mounting frame 40 can pass through the opening, so that the cover 70 and the mounting frame 40 are avoided.

[0047] The cover 70 can be provided with a dust suction port 71, which is in communication with the accommodation space 101. The connecting pipe 80 can be fixedly connected to the cover 70 and in communication with the dust suction port 71. The connecting pipe 80 can be connected to and in communication with a dust suction device (not shown). The dust suction device can realize the adsorption of dust in the accommodation space 101 through the connecting pipe 80 and the dust suction port 71.

[0048] It can be understood that part of the dust generated by polishing can be removed from the polishing clamp 100 under the adsorption of the dust suction device through the dust suction port 71 and the connecting pipe 80; the remaining dust can fall on the bottom plate 13 under the action of gravity and fall into the collecting box 14 through the through hole 131 on the bottom plate 13. The worker can collect or clean the dust in the collecting box 14 regularly. In this way, while realizing the polishing of the workpiece 200, the polishing clamp 100 can reduce the dust directly entering the atmosphere, and reduce the influence of the dust generated by polishing on the environment and the health of the worker.

[0049] Please refer to Figure 5 In some embodiments, each clamping assembly 20 can comprise a positioning member 21 and a clamping member 22.

[0050] The positioning member 21 can comprise a connecting portion 211, a first protrusion 212 and two second protrusions 213. The connecting portion 211 can be connected with the corresponding shaft member 60 to be rotatably connected to the corresponding connecting seat 12. The connecting portion 211 can abut against one side of the corresponding end plate 201 of the workpiece 200 away from the other end plate 201, and the connecting portions 211 in the two clamping assemblies 20 can realize clamping of the workpiece 200 by abutting against the two end plates 201. The first protrusion 212 and the two second protrusions 213 are fixedly connected with the connecting portion 211 and are located on the side of the connecting portion 211 for abutting against the workpiece 200. The clamping member 22 is detachably connected to the connecting portion 211 and can cooperate with the first protrusion 212 to clamp the corresponding end plate 201.

[0051] The first protrusion 212 and the clamping member 22 can be located on opposite sides of the connecting portion 211 respectively, and the two second protrusions 213 can be located on other opposite sides of the connecting portion 211 respectively. The first protrusion 212 can abut against the first side of the corresponding end plate 201, and the clamping member 22 can abut against the second side of the corresponding end plate 201. The two second protrusions 213 can abut against the third side and the fourth side of the end plate 201 respectively.

[0052] It can be understood that when the worker clamps the workpiece 200 on the polishing jig 100, the end plate 201 can be first abutted against the clamping member 22, and the end plate 201 is pushed towards the first protrusion 212. At this time, the two second protrusions 213 can limit the movement of the end plate 201 in the opposite direction of the two second protrusions 213, and limit the movement direction of the end plate 201 towards the first protrusion 212. When the end plate 201 abuts against the first protrusion 212, the worker can abut the clamping member 22 against the end plate 201, and fix the clamping member 22 on the connecting portion 211, so as to realize the clamping and fixing of the end plate 201 by the clamping assembly 20. Through the clamping and fixing of the two end plates 201 by the two clamping assemblies 20, the clamping and fixing of the workpiece 200 on the polishing furniture can be realized.

[0053] In some embodiments, each clamping member 22 can include a first clamping portion 221 and a second clamping portion 222. One end of the second clamping portion 222 is fixedly connected with one end of the first clamping portion 221, and the first clamping portion 221 is arranged at an angle with the second clamping portion 222. The angle formed by the first clamping portion 221 and the second clamping portion 222 is greater than 0 degrees and less than 180 degrees.

[0054] The first clamping portion 221 can be detachably connected with the corresponding connecting portion 211. The second clamping portion 222 can abut against the side of the corresponding end plate 201 away from the corresponding first protrusion 212. When the first clamping portion 221 is fixed with the corresponding connecting portion 211, the second clamping portion 222 can cooperate with the corresponding first protrusion 212 to clamp the end plate 201 from the opposite direction of the first side and the second side of the end plate 201. In this way, the clamping member 22 cooperates with the positioning member 21 to realize the clamping and fixing of the end plate 201 by the clamping assembly 20 from the opposite direction of the first side and the second side of the end plate 201, and from the opposite direction of the third side and the fourth side of the end plate 201; the two connecting portions 211 can abut against the two sides of the two end plates 201 away from each other, so as to limit the movement of the end plate 201 in the two directions in the first horizontal direction, thereby realizing the clamping and fixing of the workpiece 200 by the clamping assembly 20.

[0055] In the embodiments of the present application, the detachable connection manner is not specifically limited. For example, the detachable connection manner can include, but is not limited to, screw connection, buckle connection, etc.

[0056] In some embodiments, each clamping member 22 can be matched with the corresponding connecting part 211 to abut two sides of the end plate 201 in the first horizontal direction, thereby clamping the corresponding end plate 201 from both sides in the first horizontal direction.

[0057] In each clamping member 22, one end of the first clamping part 221 installed on the connecting part 211 in the first horizontal direction can protrude from the side of the connecting part 211 used to abut the end plate 201. The protruding part of the first clamping part 221 can abut the side of the corresponding end plate 201 away from the corresponding first protrusion 212, thereby clamping the end plate 201 in cooperation with the first protrusion 212. Meanwhile, in each clamping member 22, the second clamping part 212 can be matched with the connecting part 211 to clamp the corresponding end plate 201 from both sides of the corresponding end plate 201.

[0058] In this way, the clamping member 22 matched with the connecting part 211 can limit the movement of the corresponding end plate 201 in the first horizontal direction, thereby enhancing the stability of the clamping assembly 20 in clamping and fixing the workpiece 200.

[0059] The polishing jig 100 provided by the embodiments of the present application can clamp and fix one end plate 201 by each clamping assembly 20, thereby keeping the workpiece 200 in the receiving space 101. The worker can polish the workpiece 200 without manually fixing the workpiece 200, thereby improving the convenience of polishing the workpiece 200.

[0060] When the workpiece 200 has multiple columns 202, one column 202 facing the worker is polished or needs to be polished on the other side, the worker can start the driving member 30, which can drive the connected clamping assembly 20 to rotate, thereby driving the workpiece 200 and the other clamping assembly 20 to rotate, so that the other column 202 needing to be polished or the other side of the column 202 needing to be polished is rotated to face the worker, thereby improving the convenience of polishing the workpiece 200.

[0061] During the polishing of the workpiece 200, part of the dust generated by polishing can be discharged from the polishing jig 100 through the dust suction port 71 of the cover 70 and the connecting pipe 80, and the remaining dust can enter the collection box 14 through the through hole 131. In this way, the accumulation of dust on the polishing jig 100 can be reduced, and the collection box 14 can improve the convenience of dust collection for the worker. The probability of dust accumulation affecting the worker's polishing process is reduced, and the impact of dust on the environment and the worker's health is reduced.

[0062] It is apparent that a person skilled in the art can, without departing from the scope of the application, implement the application in other specific forms, and therefore the described embodiments should be considered as exemplary only and not limiting of the application, whose scope is defined by the claims appended hereinafter, rather than the description preceding it, which is therefore merely intended to provide an explanatory interpretation of the application.

Claims

1. A polishing jig for holding a workpiece, the workpiece comprising two end plates spaced apart and a plurality of uprights between the two end plates, each of the uprights having two ends connected to the two end plates, respectively, characterized in that, The polishing clamp comprises: a rack, a receiving space is formed in the rack; two clamping assemblies, both of the two clamping assemblies are located in the receiving space and are rotatably connected to the rack, the two clamping assemblies are arranged at intervals, and the two clamping assemblies are respectively used for clamping two end plates of the workpiece; a driving member, the driving member is connected with at least one of the clamping assemblies, and the driving member is used for driving the corresponding clamping assembly to rotate, so that the workpiece rotates.

2. The sharpening fixture of claim 1, wherein, The rack comprises: a bottom plate; two connecting seats, both of the two connecting seats are arranged on the bottom plate, and the two connecting seats are arranged at intervals, the two connecting seats and the bottom plate cooperatively form the receiving space, and both of the two clamping assemblies are rotatably connected to the two connecting seats.

3. The sharpening fixture of claim 2, wherein, A plurality of through holes for dust to pass through are formed in the bottom plate, and the rack further comprises: two supporting seats, the two supporting seats are arranged at intervals, and the bottom plate is arranged on the two supporting seats; a collecting box, the collecting box is movably connected to the two supporting seats and / or the bottom plate, the collecting box is located at the bottom of the bottom plate and between the two supporting seats, and the collecting box is used for collecting dust passing through the through holes.

4. The sharpening fixture of claim 1, wherein, Each of the clamping assemblies comprises: a positioning member, the positioning member is rotatably connected to the rack, and the positioning member is used for receiving the corresponding end plate; a clamping member, the clamping member is detachably connected to the positioning member, and the clamping member is used for abutting against the corresponding end plate to clamp the corresponding end plate together with the positioning member.

5. The sharpening fixture of claim 4 wherein, The clamping member is used for abutting against a first side of the corresponding end plate, and the positioning member comprises: a connecting portion, the connecting portion is rotatably connected to the rack, and the connecting portion is used for abutting against a side of the corresponding end plate away from another end plate; a first protrusion, the first protrusion is arranged on the connecting portion, and the first protrusion is used for abutting against a second side of the end plate, wherein the first side and the second side of the end plate are arranged opposite to each other; a second protrusion, the second protrusion is arranged on the connecting portion, and the second protrusion is used for abutting against a third side and / or a fourth side of the end plate, wherein the third side and the fourth side of the end plate are arranged opposite to each other.

6. The sharpening fixture of claim 5 wherein, The clamping member comprises: a first clamping portion, the first clamping portion is detachably connected to the positioning member, and the first clamping portion is used for abutting against the first side of the corresponding end plate; a second clamping portion, the second clamping portion is connected with the first clamping portion, the second clamping portion and the first clamping portion are arranged at an angle, and the second clamping portion is used for abutting against a side of the corresponding end plate facing the corresponding first protrusion.

7. The sharpening jig of claim 1 wherein, The polishing clamp further comprises: a cover, the cover is arranged on the rack, at least one side of the cover is open, and the opening of the cover is communicated with the receiving space.

8. The sharpening fixture of claim 7 wherein, A dust suction port is formed in the cover, and the polishing clamp further comprises: a connecting pipe, the connecting pipe is connected with the cover and communicated with the dust suction port, and the connecting pipe is used for connecting a dust suction device to realize suction of dust on the polishing clamp.

9. The sharpening jig of claim 1 wherein, The polishing clamp further comprises: A coupling is connected with the driving member and the corresponding clamping assembly; A mounting frame is connected with the rack, the coupling is arranged in the mounting frame, and the driving member is mounted on the mounting frame.

10. The sharpening fixture of claim 9, wherein, The polishing clamp further comprises: Two shaft members are respectively mounted on the two clamping assemblies, and the two shaft members are rotatably connected with the rack. The coupling is connected with the corresponding shaft member to realize the connection with the corresponding clamping assembly.

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