Double-head polishing apparatus

Abstract

This invention relates to the field of surface finishing technology, and provides a dual-head polishing device, including: a grinding head polishing tool, an airbag polishing tool, a swing arm, a connecting shaft, a drive device, and a pneumatic slip ring; each polishing tool is fixed to both sides of the connecting shaft by the pneumatic slip ring, the connecting shaft is connected to the swing arm, and the drive device is installed at the end of the connecting shaft; the drive device is used to control the rotation of the connecting shaft to realize the flipping and replacement of the polishing tools. Each polishing tool includes a connected water inlet passage and a water outlet passage; the airbag polishing tool also includes a connected air inflation channel and an air inflation area. By adopting a swing shaft design and controlling the rotation of the connecting shaft through the drive device, the polishing tools can be flipped and replaced, avoiding the disassembly and replacement of large-size, heavy-weight polishing tools, simplifying the replacement process, and improving processing efficiency. Moreover, during operation, the polishing fluid can promptly enter the polishing contact area to remove the heat generated during polishing, further improving polishing efficiency.

Description

Technical Field

[0001] This invention relates to the field of surface processing technology, and more particularly to a dual-head polishing device. Background Technology

[0002] With the continuous advancement of science and technology, the requirements for workpiece size and processing accuracy are becoming increasingly extreme. For large optical equipment, the key components in its optical system have dimensions reaching the meter level and processing accuracy reaching the nanometer level. The processing process includes "grinding and shaping - polishing and shaping - smoothing and shaping". Airbag polishing has the characteristics of high-efficiency and high-precision processing and is applied to the processing of large optical components. Airbag polishing tools are used in the polishing and shaping stage, and small grinding head polishing tools are used in the smoothing and shaping stage, which ensures both processing efficiency and processing accuracy.

[0003] To improve processing efficiency and reduce the impact of workpiece clamping on machining accuracy, polishing and smoothing are usually performed on the same equipment platform, seamlessly integrated by changing machining tools. However, as workpiece sizes increase, machining tools also become larger. During polishing, the large size and weight of the tools make tool changes difficult. Furthermore, the polishing contact area formed between the workpiece and the tool increases, making it difficult for the polishing slurry to penetrate this area. This results in the slurry failing to dissipate the heat generated during polishing, and the polishing particles in the slurry failing to effectively remove material, leading to workpiece and tool damage and reduced processing efficiency. Summary of the Invention

[0004] This invention provides a dual-head polishing device to overcome the deficiencies in the prior art.

[0005] This invention provides a dual-head polishing device, comprising: a grinding head polishing tool, an airbag polishing tool, a swing arm, a connecting shaft, a drive device, and a pneumatic slip ring;

[0006] The grinding head polishing tool and the airbag polishing tool are respectively fixed to both sides of the connecting shaft by the pneumatic slip ring. The connecting shaft is connected to the swing arm, and the driving device is installed at the end of the connecting shaft.

[0007] The drive device is used to control the rotation of the connecting shaft so as to flip and replace the grinding head polishing tool and the airbag polishing tool;

[0008] Both the grinding head polishing tool and the airbag polishing tool include a connected water inlet passage and a water outlet passage.

[0009] The airbag polishing tool also includes a connected inflation channel and an inflation area;

[0010] The inflation zone is used to store gas.

[0011] According to the present invention, a dual-head polishing device is provided, wherein the polishing tool further includes a grinding head and a first tool holder;

[0012] The grinding head is fixed to the first tool holder;

[0013] The first tool holder is provided with a first through hole at the center and a second through hole around the center, and the grinding head is provided with a third through hole at the center and a fourth through hole around the center.

[0014] The first through hole is connected to the third through hole, the second through hole is connected to the fourth through hole, the first through hole and the second through hole form a water inlet passage, and the third through hole and the fourth through hole form a water outlet passage.

[0015] According to a dual-head polishing device provided by the present invention, the polishing head further includes a first base;

[0016] The grinding head is fixedly connected to the first base;

[0017] The first base and the first tool holder are fixedly connected by a first slotted locking nut.

[0018] According to a dual-head polishing device provided by the present invention, the second through hole includes a plurality of holes, the fourth through hole includes a plurality of holes, and the second through hole corresponds one-to-one with the fourth through hole.

[0019] According to the present invention, a dual-head polishing device is provided, wherein the airbag polishing tool further includes an airbag head and a second tool holder;

[0020] The airbag head is fixed on the second knife handle, and the surface of the airbag head is provided with a water outlet micropore area;

[0021] The second knife handle is provided with a fifth through hole at the center and a sixth through hole around the center, and the airbag head is provided with a first conduit at the center and a second conduit around the center; the fifth through hole communicates with the first conduit, and the fifth through hole and the first conduit form an inflation channel;

[0022] The sixth through hole is connected to the second conduit, and the second conduit is connected to the water outlet micropore area. The sixth through hole, the second conduit, and the water outlet micropore area constitute a water outlet passage.

[0023] According to a dual-head polishing device provided by the present invention, the airbag polishing tool further includes a second base;

[0024] The airbag head is fixedly connected to the second base;

[0025] The second base and the second tool holder are fixedly connected by a second slotted locking nut.

[0026] According to the present invention, a dual-head polishing device is provided, wherein the airbag polishing tool further includes an auxiliary water outlet device;

[0027] The auxiliary water outlet device is provided with a seventh through hole;

[0028] The sixth through hole is connected to the second conduit through the seventh through hole.

[0029] According to a dual-head polishing device provided by the present invention, the outlet diameter of the seventh through hole is smaller than the inlet diameter.

[0030] According to a dual-head polishing device provided by the present invention, the sixth through hole includes multiple portions, the second conduit includes multiple portions, and the water outlet micropore region includes multiple portions, wherein the sixth through hole, the second conduit, and the water outlet micropore region correspond one-to-one.

[0031] According to the present invention, a dual-head polishing device is provided, wherein the pneumatic-electric slip ring includes a pneumatic-electric slip ring stator and a pneumatic-electric slip ring rotor that are electrically connected.

[0032] The pneumatic-electric slip ring stator is mounted on the connecting shaft;

[0033] The grinding head polishing tool and the airbag polishing tool are fixed on the pneumatic slip ring rotor by a hydraulic expansion sleeve.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] The dual-head polishing equipment provided by this invention adopts a swing shaft design. A drive device controls the rotation of the connecting shaft, allowing for the interchange of the grinding head polishing tool and the airbag polishing tool as needed. This avoids the need to disassemble and replace large-sized, heavy-duty polishing tools, simplifying the replacement process and meeting the selection requirements of different processing stages. It also enables rapid integration of different polishing processes, improving processing efficiency. Furthermore, since both the grinding head polishing tool and the airbag polishing tool have interconnected water inlet and outlet channels, polishing fluid can promptly enter the polishing contact area when either tool is in operation. This effectively removes heat generated during polishing and replenishes polishing particles in the contact area, further enhancing material removal efficiency and processing quality. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on the drawings described below without creative effort.

[0037] Figure 1 This is one of the structural schematic diagrams of the dual-head polishing device provided by the present invention;

[0038] Figure 2 This is the second structural schematic diagram of the dual-head polishing device provided by the present invention;

[0039] Figure 3 This is one of the structural schematic diagrams of the grinding head polishing tool in the dual-head polishing device provided by the present invention;

[0040] Figure 4 This is one of the structural schematic diagrams of the airbag polishing tool in the dual-head polishing device provided by the present invention;

[0041] Figure 5 This is the second schematic diagram of the structure of the grinding head polishing tool in the dual-head polishing device provided by the present invention;

[0042] Figure 6 This is the second schematic diagram of the structure of the airbag polishing tool in the dual-head polishing device provided by the present invention;

[0043] Figure label:

[0044] 1: Grinding head polishing tool; 11: Grinding head; 111: Third through hole; 112: Fourth through hole; 12: First tool holder; 121: First through hole; 122: Second through hole; 13: First base; 14: First slotted locking nut;

[0045] 2: Airbag polishing tool; 21: Airbag head; 211: Water outlet micropore area; 212: Second guide tube; 22: Second handle; 221: Fifth through hole; 222: Sixth through hole; 23: Second base; 24: Second slotted locking nut; 25: Auxiliary water outlet device; 251: Central through hole; 252: Seventh through hole; 26: Inflation area;

[0046] 3: Swing arm;

[0047] 4: Connecting shaft;

[0048] 5: Drive unit;

[0049] 6: Pneumatic-electric slip ring; 61: Pneumatic-electric slip ring stator; 62: Pneumatic-electric slip ring rotor; 63: First pneumatic-electric connector; 64: Second pneumatic-electric connector; 65: Third pneumatic-electric connector;

[0050] 7: Hydraulic expansion sleeve;

[0051] 8: Bearings;

[0052] 9: Swing arm housing. Detailed Implementation

[0053] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0054] In existing technologies, when polishing and smoothing are performed on the same equipment platform, the processing tools are changed as needed to achieve seamless processing. However, as workpiece sizes increase, processing tools also tend to become larger. During polishing, the large size and weight of the tools make tool changes difficult. Moreover, the polishing contact area formed by the workpiece and tool during polishing also increases, making it difficult for the polishing slurry to enter the contact area. This results in the slurry being unable to remove the heat generated during polishing, and the polishing particles in the slurry failing to effectively remove material, leading to damage to the workpiece and tool, and reduced processing efficiency.

[0055] Therefore, this invention provides a dual-head polishing device to solve the technical problems existing in the polishing process of the prior art.

[0056] Figure 1 This is a schematic diagram of the structure of a dual-head polishing device provided in an embodiment of the present invention. Figure 2 for Figure 1 A cross-sectional view. For example... Figure 1 and Figure 2 As shown, the dual-head polishing device includes: a grinding head polishing tool 1, an airbag polishing tool 2, a swing arm 3, a connecting shaft 4, a drive device 5, and a pneumatic slip ring 6.

[0057] The grinding head polishing tool 1 and the airbag polishing tool 2 are respectively fixed to both sides of the connecting shaft 4 by the pneumatic slip ring 6. The connecting shaft 4 is connected to the swing arm 3, and the drive device 5 is installed at the end of the connecting shaft 4.

[0058] The drive unit 5 is used to control the rotation of the connecting shaft 4 so as to flip and replace the grinding head polishing tool 1 and the airbag polishing tool 2.

[0059] Both the grinding head polishing tool 1 and the airbag polishing tool 2 include a connected water inlet passage and a water outlet passage. The airbag polishing tool 2 also includes a connected air inflation channel and an air inflation area;

[0060] The inflation area is used to store gas.

[0061] Specifically, in the dual-head polishing device of this embodiment of the invention, "dual-head" refers to having two polishing tools, namely a grinding head polishing tool 1 and an airbag polishing tool 2. Figure 3 This is a schematic diagram of the structure of the polishing tool 1. Figure 4 This is a schematic diagram of the structure of the airbag polishing tool 2.

[0062] In addition to the above, the dual-head polishing device also includes a swing arm 3, a connecting shaft 4, a drive unit 5, and two pneumatic slip rings 6, meaning each polishing tool corresponds to one pneumatic slip ring 6. The drive unit 5 is mounted at the end of the connecting shaft 4. The drive unit 5 can be as follows: Figure 2 The hollow motor shown can also be other motors or motors, and no specific limitation is made here.

[0063] The grinding head polishing tool 1 can be fixed to one side of the connecting shaft 4 via the first pneumatic slip ring 6, and the airbag polishing tool 2 can be fixed to the other side of the connecting shaft 4 via the second pneumatic slip ring 6. Each pneumatic slip ring 6 includes an electrically connected pneumatic slip ring stator 61 and a pneumatic slip ring rotor 62. The grinding head polishing tool 1 can be directly connected to the pneumatic slip ring rotor 62 of the first pneumatic slip ring 6, or it can be fixed to the other side of the connecting shaft 4 via the second pneumatic slip ring 6. Figure 1 As shown, the hydraulic expansion sleeve 7 is fixed to the pneumatic slip ring rotor 62 of the first pneumatic slip ring 6, and the hydraulic expansion sleeve 7 is connected to the pneumatic slip ring rotor 62 of the first pneumatic slip ring 6. The pneumatic slip ring stator 61 of the first pneumatic slip ring 6 is mounted on one side of the connecting shaft 4 and fixed in relative position to the connecting shaft 4, thereby fixing the grinding head polishing tool 1 to one side of the connecting shaft 4.

[0064] The connecting shaft 4 can be connected to the swing arm 3 via the bearing 8, and the swing arm 3 can be fixedly connected to the swing arm housing 9.

[0065] The drive unit 5 is used to control the rotation of the connecting shaft 4 so as to flip and replace the grinding head polishing tool 1 and the airbag polishing tool 2.

[0066] Both the grinding head polishing tool 1 and the airbag polishing tool 2 include a connected water inlet passage and a water outlet passage. The grinding head polishing tool 1 can receive polishing fluid through the water inlet passage and deliver the polishing fluid to the polishing contact area on the surface of the workpiece to be polished through the water outlet passage. Similarly, the airbag polishing tool 2 can receive polishing fluid through the water inlet passage and deliver the polishing fluid to the polishing contact area on the surface of the workpiece to be polished through the water outlet passage.

[0067] The difference is that the airbag polishing tool 2 also includes a connected inflation channel and an inflation area. Compressed gas can be connected through the inflation channel and the compressed gas can be transferred to the inflation area for storage to improve the rigidity of the airbag polishing tool and perform high-efficiency polishing on the surface of the workpiece to be polished.

[0068] like Figure 1 and Figure 2As shown, a first pneumatic-electric connector 63 is provided at the bearing 8, a second pneumatic-electric connector 64 is provided at the connecting shaft 4, and a third pneumatic-electric connector 65 is provided at the pneumatic-electric slip ring 6. The first pneumatic-electric connector 63, the second pneumatic-electric connector 64 and the third pneumatic-electric connector 65 are connected in sequence.

[0069] Polishing fluid and compressed gas can be connected from the first pneumatic connector 63, reach the second pneumatic connector 64 and exit from the second pneumatic connector 64, and then be connected from the third pneumatic connector 65 to the water inlet passage and air inflation passage of the airbag polishing tool 2.

[0070] For the grinding head polishing tool 1, compressed gas is not required, so it is only necessary to replace the compressed gas in the airbag polishing tool 2 with polishing fluid.

[0071] It is understood that the method of connecting the polishing fluid and compressed gas is not limited to the above method. The polishing fluid can also be directly connected to the water inlet channel and the compressed gas can be connected to the air filling channel. In this embodiment of the invention, no specific limitation is made.

[0072] The dual-head polishing device provided in this embodiment of the invention includes: a grinding head polishing tool, an airbag polishing tool, a swing arm, a connecting shaft, a drive device, and a pneumatic slip ring. The grinding head polishing tool and the airbag polishing tool are respectively fixed to both sides of the connecting shaft via the pneumatic slip ring. The connecting shaft is connected to the swing arm, and the drive device is installed at the end of the connecting shaft. The drive device is used to control the rotation of the connecting shaft to flip and replace the grinding head polishing tool and the airbag polishing tool. Both the grinding head polishing tool and the airbag polishing tool include a connected water inlet passage and a water outlet passage; the airbag polishing tool also includes a connected air inflation channel and an air inflation area; the air inflation area is used to store gas. This dual-head polishing device adopts a swing shaft design, and the drive device controls the rotation of the connecting shaft, allowing the grinding head polishing tool and the airbag polishing tool to be flipped and replaced as needed. This avoids the disassembly and replacement of large-size, high-mass polishing tools, simplifies the replacement process, meets the selection of polishing tools for different processing stages, enables rapid connection between different polishing processes, and improves processing efficiency. Moreover, since both the grinding head polishing tool and the airbag polishing tool have connected water inlet and outlet channels, the polishing fluid can enter the polishing contact area in a timely manner when either polishing tool is working, so as to remove the heat generated during the polishing process and replenish the polishing particles in the polishing contact area to remove the material, which can further improve the polishing efficiency and processing quality.

[0073] like Figure 5 As shown, based on the above embodiment, the grinding head polishing tool further includes a grinding head 11 and a first tool holder 12;

[0074] The grinding head 11 is fixed on the first tool holder 12;

[0075] The first tool holder 12 is provided with a first through hole 121 at the center and a second through hole 122 around the center, and the grinding head 11 is provided with a third through hole 111 at the center and a fourth through hole 112 around the center.

[0076] The first through hole 121 is connected to the third through hole 111, and the second through hole 122 is connected to the fourth through hole 112. The first through hole 121 and the second through hole 122 form a water inlet passage, and the third through hole 111 and the fourth through hole 112 form a water outlet passage.

[0077] Specifically, the end face of the grinding head 11 can be a flat surface or a spherical surface, with an end face diameter of 10mm-80mm. Therefore, the grinding head 11 can be called a small grinding head, and the grinding head polishing tool 1 can be called a small grinding head polishing tool.

[0078] The grinding head 11 is a solid structure, and the material of the grinding head 11 can be rubber or asphalt. Figure 5 The example given is that the end face of the grinding head 11 can be a plane.

[0079] It is understandable that the grinding head 11 can be directly fixed to the first tool holder 12 by adhesive, or it can be detachably fixed to the first tool holder 12 by means of snap-fit ​​connections or other methods. In addition, such as... Figure 5 As shown, the grinding head 11 can also be detachably fixed to the first tool holder 12 by means of a first base 13, a first slotted locking nut 14, and a first bolt. The grinding head 11 can be fixedly connected to the first base 13 by the first bolt, and the first base 13 and the first tool holder 12 can be fixedly connected by the first slotted locking nut 14. The first slotted locking nut 14 can be a round nut.

[0080] The first tool holder 12 has one first through hole 121 and one or more second through holes 122. When there are multiple second through holes 122, each second through hole 122 can be evenly distributed around the first through hole 121, and the distance between each second through hole 122 and the first through hole 121 can be equal or unequal.

[0081] Similarly, the grinding head 11 has one third through hole 111 and one or more fourth through holes 112. When there are multiple second through holes 122, there are also multiple fourth through holes 112, and the second through holes 122 and the fourth through holes 112 correspond one-to-one. This forms one water inlet passage and one water outlet passage at the center position, as well as multiple water inlet passages and multiple water outlet passages around the center, ensuring that the grinding head polishing tool has sufficient polishing fluid reaching the polishing contact area of ​​the workpiece surface when processing the workpiece.

[0082] like Figure 6As shown, based on the above embodiment, the airbag polishing tool 2 also includes an airbag head 21 and a second handle 22;

[0083] The airbag head 21 is fixed on the second knife handle 22, and the surface of the airbag head 21 is provided with a water outlet micropore area 211.

[0084] The second handle 22 is provided with a fifth through hole 221 at the center and a sixth through hole 222 around the center, and the airbag head 21 is provided with a first conduit at the center and a second conduit 212 around the center; the fifth through hole 221 is connected to the first conduit, and the fifth through hole 221 and the first conduit form an inflation channel.

[0085] The sixth through hole 222 is connected to the second conduit 212, and the second conduit 212 is connected to the water outlet micropore region 211. The sixth through hole 222, the second conduit 212 and the water outlet micropore region 211 constitute the water outlet passage.

[0086] Specifically, the material of the airbag head 21 can be a semi-flexible material.

[0087] Here, the airbag head 21 can be directly fixed to the second handle 22 by adhesive, or it can be detachably fixed to the second handle 22 by means of snap-fit ​​connections or other methods. In addition, such as... Figure 6 As shown, the airbag head 21 can also be detachably fixed to the second tool holder 22 by means of a second base 23, a second slotted locking nut 24, and a second bolt. The airbag head 21 can be fixedly connected to the second base 23 by the second bolt, and the second base 23 and the second tool holder 22 can be fixedly connected by the second slotted locking nut 24. The second slotted locking nut 24 can be a round nut.

[0088] The surface of the airbag head 21 is provided with a water outlet micropore region 211, which may include one or more.

[0089] The second tool holder 22 has one fifth through hole 221 and one or more sixth through holes 222. When there are multiple water outlet micro-hole areas 211, there are multiple sixth through holes 222. Each sixth through hole 222 can be evenly distributed around the fifth through hole 221. The distance between each sixth through hole 222 and the fifth through hole 221 can be equal or unequal.

[0090] The second conduit 212 can be a rubber tube. The fifth through hole 221 can be directly connected to the first conduit, and the sixth through hole 222 can also be directly connected to the second conduit 212. The fifth through hole 221 and the sixth through hole 222 can also be connected to the first conduit and the second conduit 212 respectively through the auxiliary water outlet device 25 included in the airbag polishing tool 2. The introduction of the auxiliary water outlet device 25, when the second tool holder 22 has the same structure and the same size as the first tool holder 12, makes the first tool holder 12 and the second tool holder 22 universal for both the grinding head polishing tool 1 and the airbag polishing tool 2. This allows the grinding head polishing tool 1 to be detachably fixed to the first tool holder 12 or the second tool holder 22, and the airbag polishing tool 2 to be detachably fixed to the first tool holder 12 or the second tool holder 22.

[0091] The auxiliary water outlet device 25 may include a central through hole 251 and a seventh through hole 252. The fifth through hole 221 can be connected to the first conduit through the central through hole 251. At this time, the fifth through hole 221, the central through hole 251 and the first conduit constitute an inflation pipe. The inflation pipe is connected to the inflation area 26 and is used to deliver gas to the inflation area 26.

[0092] The sixth through hole 222 can be connected to the second conduit 212 through the seventh through hole 252. At this time, the sixth through hole 222, the seventh through hole 252, the second conduit 212 and the water outlet micropore area 211 constitute the water outlet passage.

[0093] It is understandable that the seventh through hole 252 is used to form the water outlet passage, and the size of the water outlet micropore region 211 is usually larger than the diameter of the sixth through hole 222. Therefore, the diameter of the water outlet of the seventh through hole 252 is smaller than the diameter of the water inlet, so as to ensure the area size of the water outlet micropore region 211.

[0094] The first catheter set on the airbag head 21 is one. Figure 6 (Not shown in the image). One or more second conduits 212 are provided on the airbag head 21. When there are multiple water outlet micropore areas 211 and multiple sixth through holes 222, there are also multiple second conduits 212, and the sixth through holes 222, second conduits 212, and water outlet micropore areas 211 correspond one-to-one. This forms an inflation channel corresponding to the center position and multiple water outlet channels corresponding to the center, ensuring that the airbag polishing tool can smoothly process the workpiece to be polished, and that sufficient polishing fluid reaches the polishing contact area of ​​the workpiece surface during processing.

[0095] In summary, the dual-head polishing equipment provided in this embodiment of the invention includes a grinding head polishing tool and an airbag polishing tool. It allows for the replacement of the grinding head polishing tool with the workpiece after airbag polishing, via a swing arm rotation. This solves the problem of difficult tool replacement caused by large size and weight of polishing tools. Furthermore, both the grinding head polishing tool and the airbag polishing tool have a water outlet function, assisting the polishing fluid to enter the polishing contact area, improving material removal efficiency during the polishing process, reducing the temperature of the polishing contact area, improving workpiece processing quality, and extending the service life of the polishing tools.

[0096] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A dual-head polishing device, characterized in that, include: Grinding head polishing tool (1), airbag polishing tool (2), swing arm (3), connecting shaft (4), drive device (5), and pneumatic slip ring (6); The grinding head polishing tool (1) and the airbag polishing tool (2) are respectively fixed to both sides of the connecting shaft (4) by the pneumatic slip ring (6). The connecting shaft (4) is connected to the swing arm (3). The driving device (5) is installed at the end of the connecting shaft (4). The drive device (5) is used to control the rotation of the connecting shaft (4) to flip and replace the grinding head polishing tool (1) and the airbag polishing tool (2); Both the grinding head polishing tool (1) and the airbag polishing tool (2) include a connected water inlet passage and a water outlet passage; The airbag polishing tool (2) also includes a connected inflation channel and an inflation area (26). The inflation zone (26) is used to store gas; The grinding head polishing tool (1) also includes a grinding head (11) and a first tool holder (12). The grinding head (11) is fixed on the first tool holder (12); The first tool holder (12) is provided with a first through hole (121) at the center and a second through hole (122) around the center, and the grinding head (11) is provided with a third through hole (111) at the center and a fourth through hole (112) around the center. The first through hole (121) is connected to the third through hole (111), the second through hole (122) is connected to the fourth through hole (112), the first through hole (121) and the second through hole (122) form a water inlet passage, and the third through hole (111) and the fourth through hole (112) form a water outlet passage. The airbag polishing tool (2) also includes an airbag head (21) and a second handle (22); The airbag head (21) is fixed on the second knife handle (22), and the surface of the airbag head (21) is provided with a water outlet micropore area (211). The second knife handle (22) is provided with a fifth through hole (221) at the center and a sixth through hole (222) around the center. The airbag head (21) is provided with a first conduit at the center and a second conduit (212) around the center. The fifth through hole (221) is connected to the first conduit, and the fifth through hole (221) and the first conduit form an inflation channel. The sixth through hole (222) is connected to the second conduit (212), and the second conduit (212) is connected to the water outlet micropore area (211). The sixth through hole (222), the second conduit (212), and the water outlet micropore area (211) constitute a water outlet passage. The airbag polishing tool (2) also includes an auxiliary water outlet device (25); The auxiliary water outlet device (25) is provided with a seventh through hole (252); The sixth through hole (222) is connected to the second conduit (212) through the seventh through hole (252).

2. The dual-head polishing equipment according to claim 1, characterized in that, The grinding head polishing tool (1) also includes a first base (13); The grinding head (11) is fixedly connected to the first base (13); The first base (13) and the first tool holder (12) are fixedly connected by the first slotted locking nut (14).

3. The dual-head polishing device according to claim 1, characterized in that, The second through hole (122) includes multiple holes, and the fourth through hole (112) includes multiple holes, with the second through hole (122) and the fourth through hole (112) corresponding one-to-one.

4. The dual-head polishing device according to claim 1, characterized in that, The airbag polishing tool (2) also includes a second base (23); The airbag head (21) is fixedly connected to the second base (23); The second base (23) and the second tool holder (22) are fixedly connected by the second slotted locking nut (24).

5. The dual-head polishing device according to claim 1, characterized in that, The outlet diameter of the seventh through hole (252) is smaller than the inlet diameter.

6. The dual-head polishing device according to claim 1, characterized in that, The sixth through hole (222) includes multiple parts, the second conduit (212) includes multiple parts, and the water outlet micropore region (211) includes multiple parts. The sixth through hole (222), the second conduit (212) and the water outlet micropore region (211) correspond one-to-one.

7. The dual-head polishing device according to any one of claims 1-3, characterized in that, The pneumatic slip ring (6) includes a pneumatic slip ring stator (61) and a pneumatic slip ring rotor (62) that are electrically connected. The pneumatic slip ring stator (61) is mounted on the connecting shaft (4); The grinding head polishing tool (1) and the airbag polishing tool (2) are fixed on the pneumatic slip ring rotor (62) by a hydraulic expansion sleeve (7).

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