Cutter for cleaning flange hole

Abstract

The utility model relates to a cutter for cleaning a flange hole, which comprises a cutter handle, one end of the cutter handle is detachably connected with a multi-stage cutter head assembly, the other end of the cutter handle is detachably connected with a connecting shaft, the multi-stage cutter head assembly and the cutter handle are respectively provided with an air passage and are communicated with each other, the multi-stage cutter head is provided with a plurality of air holes, and the cutter handle is provided with an air inlet hole. The cleaning device has the effect of improving the cleaning effect and the cleaning efficiency of the wind power flange hole.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of machining equipment, in particular to a cutter for cleaning flange holes. BACKGROUND

[0002] A wind power flange, also known as a wind power flange, is an important connecting piece for connecting key components such as a tower drum and a tower drum, a tower drum and a nacelle, and a nacelle and a hub in a wind turbine generator set. It is usually made of high-strength steel and has good load-bearing capacity and weather resistance. The main function of the wind power flange is to ensure the stable connection between the components of the wind turbine generator set, withstand complex loads such as wind force, gravity, vibration, and ensure the normal operation and safety of the wind turbine generator set.

[0003] The wind power flange has a large diameter and many holes. After the holes on the flange are formed, they often need to be cleaned to remove burrs and other attachments. The depth of these holes is very deep. In the prior art, the cleaning of these flange holes is mostly done manually by holding a steel wire brush. For deeper flange holes, a long wooden rod is fixedly connected with a steel wire brush for cleaning. This not only cleans slowly, but also has low efficiency. CONTENT OF THE UTILITY MODEL

[0004] In order to improve the cleaning effect and efficiency of the wind power flange hole, the application provides a cutter for cleaning the flange hole.

[0005] The cutter for cleaning the flange hole provided by the application adopts the following technical scheme:

[0006] A cutter for cleaning a flange hole, comprising a handle, a multi-stage cutter head assembly is detachably connected to one end of the handle, and a connecting shaft is detachably connected to the other end of the handle, the handle and the multi-stage cutter head assembly are both provided with air channels and are in communication with each other, a plurality of air holes are formed in the multi-stage cutter head assembly, and an air inlet hole is formed in the handle.

[0007] By adopting the above technical scheme, the detachable connection of the handle and the multi-stage cutter head assembly can install the corresponding multi-stage cutter head assembly according to the flange hole of different depths, thereby improving the adaptability of the cutter. The multi-stage cutter head can be telescopic according to the depth of the flange hole, thereby improving the cleaning effect. The air inlet hole is formed in the handle, and the multi-stage cutter head assembly is provided with a plurality of air holes. The air inlet hole in the handle is connected with an external air pump, and then the flange hole is cleaned, thereby improving the cleaning efficiency of the flange hole.

[0008] Optionally, the multi-stage cutter head assembly comprises a first cutter head, a second cutter head and a third cutter head, the first cutter head and the second cutter head are respectively provided with a first sliding groove and a second sliding groove, the second cutter head and the third cutter head are respectively fixedly connected with a first sliding block and a second sliding block, the second cutter head is slidably connected in the first sliding groove of the first cutter head through the first sliding block, and the third cutter head is slidably connected in the second sliding groove of the second cutter head through the second sliding block.

[0009] By adopting the above technical scheme, the multi-stage cutter head assembly comprises the first cutter head, the second cutter head and the third cutter head, the number of stages is determined according to the depth of the flange hole, the second cutter head is slidably connected in the first sliding groove of the first cutter head through the first sliding block, and the third cutter head is slidably connected in the second sliding groove of the second cutter head through the second sliding block, so that the multi-stage expansion of the cutter is realized, and the adaptability of the cutter to different hole depths and hole diameters when cleaning the flange hole is improved. Through the cooperation of the sliding groove and the sliding block, the stability of the multi-stage cutter head assembly in the sliding process is improved.

[0010] Optionally, the second cutter head and the third cutter head are respectively fixedly connected with a first sealing plate and a second sealing plate, the first sealing plate and the second sealing plate are both L-shaped in cross section, the first sealing plate and the second sealing plate are arranged on the side of the second cutter head and the third cutter head close to the connecting shaft, a pressure hole is formed in the side of the cutter handle far from the connecting shaft, an opening and closing assembly is slidably connected in the pressure hole, the opening and closing assembly penetrates through the cutter handle, a main branch air channel is formed in the cutter handle, a first L-shaped branch air channel is formed in the end of the first cutter head close to the cutter handle, a U-shaped branch air channel is formed in the end of the first cutter head far from the cutter handle, one end of the first L-shaped branch air channel is in communication with the first sliding groove, the other end is in communication with the main branch air channel, a second L-shaped branch air channel is formed in the first sliding block, the second L-shaped branch air channel makes the first sliding groove in communication with the U-shaped branch air channel, a first branch air channel is formed in the side of the second cutter head close to the first cutter head, the first branch air channel makes the second sliding groove in communication with the U-shaped branch air channel.

[0011] By adopting the above technical scheme, when the external air pump is started, the gas enters the air channel from the air inlet hole. Since a closed cavity is formed between the first sealing plate and the first sliding groove and between the second sealing plate and the second sliding groove. Then the operator presses the opening and closing assembly, so that part of the gas in the air channel enters the main branch air channel on the cutter handle through the opening and closing assembly, and then enters the closed cavity formed between the first sealing plate and the first sliding groove through the first L-shaped branch air channel on the first cutter head. Under the action of air pressure, the first sliding block moves downward, so that the second cutter head moves downward. When the second sliding block moves to the position where the second L-shaped branch air channel is in communication with the U-shaped branch air channel, the gas enters the closed cavity formed between the second sliding groove and the second sealing plate through the second L-shaped branch air channel and the U-shaped branch air channel, and then pushes the second sliding block to move downward, so that the third cutter head moves downward, thereby further improving the cleaning efficiency.

[0012] Optionally, the opening and closing assembly comprises a pressing rod, a pressing piece and a blocking ring, the blocking ring is detachably connected to the pressing rod and located in the air channel of the shank, the pressing piece is sleeved on the pressing rod and fixedly connected to the inner side wall of the shank at one end and to the blocking ring at the other end, and a second branch air channel is formed in the pressing rod and has a Z-shaped cross section.

[0013] By adopting the above technical scheme, the opening and closing assembly comprises a pressing rod, a pressing piece and a blocking ring, the pressing rod penetrates through the shank, the blocking ring is fixedly connected to the pressing rod and located in the air channel of the shank, thereby avoiding the opening and closing assembly from falling off the shank and further improving the stability of the opening and closing assembly. The pressing piece is sleeved on the pressing rod and located between the inner side wall of the shank and the blocking ring, thereby enabling the opening and closing assembly to be reset. The second branch air channel is formed in the pressing rod and has a Z-shaped cross section, and the operator can press the pressing rod to make one end of the second branch air channel communicate with the air channel of the shank and the other end communicate with the main branch air channel on the shank, thereby enabling the gas to push the first slider and the second slider to move downward with the second tool bit and the third tool bit, and further improving the cleaning efficiency of the tool.

[0014] Optionally, the first sliding groove and the second sliding groove are respectively detachably connected with a first blocking block and a second blocking block, and a reset piece is arranged in each of the first sliding groove and the second sliding groove and located between the first blocking block and the first slider and between the second blocking block and the second slider.

[0015] By adopting the above technical scheme, when the cleaning of one hole is completed, the external air pump stops supplying air to the air channel, and then the operator presses the opening and closing assembly to make the gas in each branch air pipe flow out, thereby achieving pressure relief. At this time, the reset piece is pulled to pull the second tool bit and the third tool bit upward, thereby achieving reset, avoiding the damage of the tool caused by the collision of the tool body due to the excessive length of the tool body, and improving the service life of the tool.

[0016] Optionally, a magnet is fixedly connected to each of the first sealing plate, the second sealing plate, the first blocking block and the second blocking block.

[0017] By adopting the above technical scheme, when the tool is in the use state, the second tool bit and the third tool bit are in the extended state, at this time, the magnet on the first sealing plate and the magnet on the first blocking block are in the state of attracting each other with different polarities, and the magnet on the second sealing plate and the magnet on the second blocking block are also in the state of attracting each other with different polarities, and at this time, the air pressure between each branch pipe and the sealing plate and the sliding groove is stable, thereby further improving the stability of the tool in use.

[0018] Optionally, a threaded ring is detachably connected to the shank near the first tool bit, and a supporting ring is threadedly connected to the threaded ring.

[0019] By adopting the technical scheme, the threaded ring is detachably connected to the shank near the first cutter head, and the support ring is threadedly connected to the threaded ring, so that the cutter is more stable when cleaning the flange hole, and the cleaning efficiency and quality are improved.

[0020] Optionally, the support ring is fixedly connected with a rubber pad on the side away from the connecting shaft.

[0021] By adopting the technical scheme, the support ring is fixedly connected with a rubber pad on the side away from the connecting shaft, which can effectively improve the stability of the cutter for cleaning the flange hole during use, reduce the vibration of the cutter during work, protect the flange hole wall from damage, and at the same time, enhance the overall sealing of the cutter to prevent dust and debris from escaping during cleaning.

[0022] In summary, the present application has at least one of the following beneficial technical effects:

[0023] 1. The detachable connection of the shank and the multi-stage cutter head assembly can install the corresponding multi-stage cutter head assembly according to different depths of the flange hole, thereby improving the adaptability of the cutter. The multi-stage cutter head can be telescopic according to the depth of the flange hole, thereby improving the cleaning effect. The shank is provided with an air inlet hole, and the multi-stage cutter head assembly is provided with a plurality of air holes. The air inlet hole of the shank is connected to an external air pump, and then the flange hole is cleaned, thereby improving the cleaning efficiency of the flange hole;

[0024] 2. The multi-stage cutter head assembly includes a first cutter head, a second cutter head and a third cutter head, and the number of stages is determined according to the depth of the flange hole. The second cutter head is slidably connected in the first sliding groove of the first cutter head through a first sliding block, and the third cutter head is slidably connected in the second sliding groove of the second cutter head through a second sliding block, thereby realizing the multi-stage telescopic of the cutter and improving the adaptability of the cutter to different hole depths and hole diameters when cleaning the flange hole. The stability of the multi-stage cutter head assembly during sliding is improved through the cooperation of the sliding groove and the sliding block;

[0025] 3. When the external air pump is started, the gas enters the air duct from the air inlet hole. A sealed chamber is formed between the first sealing plate and the first sliding groove, and between the second sealing plate and the second sliding groove. Then the operator presses the opening and closing assembly, so that part of the gas in the air duct enters the main branch air duct on the shank through the opening and closing assembly, and then enters the sealed cavity formed between the first sealing plate and the first sliding groove through the first L-shaped branch air duct on the first cutter head. Under the action of air pressure, the first sliding block moves downward, so that the second cutter head moves downward. When the second sliding block moves to the position where the second L-shaped branch air duct communicates with the U-shaped branch air duct, the gas enters the sealed chamber formed between the second sliding groove and the second sealing plate through the second L-shaped branch air duct and the U-shaped branch air duct, and pushes the second sliding block to move downward, so that the third cutter head moves downward, thereby further improving the cleaning efficiency;

[0026] 4. The opening and closing assembly comprises a pressing rod, a pressing piece and a blocking ring, the pressing rod is arranged through the tool holder, the blocking ring is fixedly connected to the pressing rod and located in the air channel of the tool holder, so that the opening and closing assembly is prevented from falling off the tool holder, and the stability of the opening and closing assembly is further improved. The pressing piece is sleeved on the pressing rod and located between the inner wall of the tool holder and the blocking ring, so that the opening and closing assembly can be reset. The second branch air channel is arranged on the pressing rod and has a Z-shaped cross section, and the operator can press the pressing rod to make one end of the second branch air channel communicate with the air channel of the tool holder and the other end communicate with the main branch air channel on the tool holder, so that the gas can push the first sliding block and the second sliding block to move downward with the second tool head and the third tool head, and the cleaning efficiency of the tool is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a schematic diagram of the overall structure of the application.

[0028] Figure 2 is a schematic diagram of the half cut structure of the application.

[0029] Figure 3 is Figure 2 is a local enlarged view of A in FIG. 1.

[0030] Figure 4 is Figure 2 is a local enlarged view of B in FIG. 1.

[0031] Figure 5 is Figure 2 is a local enlarged view of C in FIG. 1.

[0032] Explanation of reference signs: 1, tool holder; 11, air channel; 111, air inlet hole; 12, pressing hole; 13, main branch air channel; 2, multi-stage tool head assembly; 21, first tool head; 211, first sliding groove; 2111, first stop block; 212, first L-shaped branch air channel; 213, U-shaped branch air channel; 22, second tool head; 221, second sliding groove; 2211, second stop block; 222, first sliding block; 2221, second L-shaped branch air channel; 223, first sealing plate; 224, first branch air channel; 23, third tool head; 231, second sliding block; 232, second sealing plate; 24, magnet; 25, air hole; 3, connecting shaft; 4, opening and closing assembly; 41, pressing rod; 411, second branch air channel; 42, pressing piece; 43, blocking ring; 5, threaded ring; 51, supporting ring; 52, rubber pad; 6, resetting piece. DETAILED DESCRIPTION

[0033] The application will be described in further detail below with reference to the accompanying drawings. Figures 1-5 The application will be described in further detail below with reference to the accompanying drawings.

[0034] The application discloses a tool for cleaning flange holes.

[0035] Reference Figure 1 A tool for cleaning flange hole comprises a handle 1, a connecting shaft 3 detachably connected to one end of the handle 1, and a multi-stage tool head assembly 2 detachably connected to the other end of the handle 1. The multi-stage tool head assembly 2 comprises a first tool head 21, a second tool head 22 and a third tool head 23. An air channel 11 is formed in the handle 1 and the multi-stage tool head assembly 2. A plurality of air holes 25 are equidistantly arranged along the axial direction of the first tool head 21, the second tool head 22 and the third tool head 23. An air inlet hole 111 is formed in the handle 1 near the connecting shaft 3.

[0036] Reference Figure 1 When the operator needs to clean the flange hole of the wind power flange, the tool is only needed to be threadedly connected to the special fixture through the connecting shaft 3, and then the connecting head is installed at the air inlet hole 111 of the handle 1, and then the air pump is connected to the connecting head. At this time, the tool is positioned with the flange hole, and then the tool is slowly lowered. The operator starts the air pump, and the gas enters the air channel 11 through the air inlet hole 111, and then is discharged through the air holes 25 of the tool heads, so as to realize the cleaning of the flange hole. The operator can also adjust the multi-stage tool according to the flange hole of different depths. Not only the cleaning efficiency of the tool is improved, but also the usability of the tool is improved.

[0037] Reference Figure 2 A first sliding groove 211 and a second sliding groove 221 are respectively formed in the first tool head 21 and the second tool head 22, and a first sliding block 222 and a second sliding block 231 are respectively fixedly connected to the second tool head 22 and the third tool head 23. The first sliding block 222 is slidingly connected in the first sliding groove 211, so that the second tool head 22 slides up and down in the first tool head 21. The second sliding block 231 is slidingly connected in the second sliding groove 221, so that the third tool head 23 slides up and down in the second tool head 22.

[0038] Reference Figure 2 When the operator drives the special fixture to clean the flange hole, the second tool head 22 slides downward in the first sliding groove 211 through the first sliding block 222, and the third tool head 23 slides downward in the second sliding groove 221 through the second sliding block 231, so that the tool is in the longest state, thereby improving the cleaning effect of the tool.

[0039] Reference Figures 2 to 4The first sealing plate 223 and the second sealing plate 232 are fixedly connected with the first cutter head 21 and the second cutter head 22 respectively on the side close to the connecting shaft 3, and the first sealing plate 223 and the second sealing plate 232 are both L-shaped in cross section. The pressure hole 12 is arranged on the shank 1 and is located below the air inlet hole 111, the opening and closing assembly 4 is slidably connected in the pressure hole 12 and penetrates through the shank 1. The main branch air channel 13 is arranged on the shank 1 and communicates with the pressure hole 12. The first L-shaped branch air channel 212 is arranged on the first cutter head 21 close to the shank 1, and the U-shaped branch air channel 213 is arranged on the other end of the first cutter head 21, one end of the first L-shaped branch air channel 212 communicates with the first sliding groove 211, and the other end of the first L-shaped branch air channel 212 communicates with the main branch air channel 13. The second L-shaped branch air channel 2221 is arranged on the first sliding block 222 and communicates with the first sliding groove 211 at one end and the U-shaped branch air channel 213 at the other end. The first branch air channel 224 is arranged on the second cutter head 22 close to the second stop block 2211 and communicates with the U-shaped branch air channel 213 at one end and the second sliding groove 221 at the other end. The first stop block 2111 and the second stop block 2211 are detachably connected in the first sliding groove 211 and the second sliding groove 221 respectively, and the reset member 6 is abutted against the first sliding groove 211 and the second sliding groove 221, and the reset member 6 is a spring and is located between the first stop block 2111 and the first sliding groove 211 and between the second stop block 2211 and the second sliding groove 221 respectively.

[0040] With reference to Figures 2 to 4 When the operator starts the air pump, a closed cavity is formed between the first sealing plate 223 and the first sliding groove 211 and between the second sealing plate 232 and the second sliding groove 221. At this time, the gas is sprayed out of the cutter from the air hole 25, so that the inside of the flange hole is cleaned. When the operator presses the opening and closing assembly 4, part of the gas in the air channel 11 enters the main branch air channel 13 on the shank 1 through the opening and closing assembly 4, and then enters the closed cavity formed between the first sealing plate 223 and the first sliding groove 211 through the first L-shaped branch air channel 212 on the first cutter head 21, so that the first sliding block 222 moves downward under the action of the gas pressure, thereby making the second cutter head 22 move downward. At this time, the spring in the first sliding groove 211 is in a stretched state, and the spring in the second sliding groove 221 is in a compressed state. When the second sliding block 231 moves to the position where the second L-shaped branch air channel 2221 and the U-shaped branch air channel 213 communicate, the gas enters the closed cavity formed between the second sliding groove 221 and the second sealing plate 232 through the second L-shaped branch air channel 2221 and the U-shaped branch air channel 213, thereby pushing the second sliding block 231 to move downward, so that the third cutter head 23 moves downward. At this time, the spring in the first sliding groove 211 and the spring in the second sliding groove 221 are both in a stretched state, so that the unfolding of the multi-stage cutter head assembly 2 is completed.

[0041] With reference to Figure 2 and Figure 5, the opening and closing assembly 4 comprises a pressing rod 41, a pressing piece 42 and a blocking ring 43, the pressing rod 41 passes through the handle 1, the section of the connecting section of the handle 1 through which the pressing rod 41 passes is square-shaped, so that the rotation of the pressing rod 41 can be limited and the stability is improved. The blocking ring 43 is fixedly connected to the pressing rod 41 and located in the air channel 11 of the handle 1. The pressing piece 42 is coaxially sleeved with the pressing rod 41, and the pressing piece 42 is a square-shaped spring, one end of the square-shaped spring is fixedly connected to the inner side wall of the handle 1, and the other end is fixedly connected to the blocking ring 43. The pressing rod 41 is provided with a second branch air channel 411, and the section of the second branch air channel 411 is Z-shaped. When it is needed to clean the flange hole, an operator presses the pressing plate, so that the second branch air channel 411 on the pressing rod 41 is communicated with the main branch air channel 13 on the handle 1, so that the gas enters the closed cavity formed by the first sliding groove 211 and the first sealing plate 223 from the second branch air channel 411.

[0042] With reference to Figure 2 and Figure 3 , the second cutter head 22 moves downward under the action of the gas pressure, and then the third cutter head 23 also moves downward. Thus, the unfolding of the multi-stage cutter head assembly 2 is realized. When the cleaning of one hole is completed, the external air pump stops supplying the gas into the air channel 11. Then, the operator presses the opening and closing assembly 4, so that the gas flow in each branch air pipe is lost, so that the purpose of pressure relief is achieved. At this time, the springs in the first sliding groove 211 and the second sliding groove 221 are pulled, and the second cutter head 22 and the third cutter head 23 are pulled upward respectively, so that the reset is realized, the damage of the cutter due to the collision of the cutter body is avoided, and the service life of the cutter is improved.

[0043] With reference to Figure 3 and Figure 4 , the first sealing plate 223, the second sealing plate 232, the first stop block 2111 and the second stop block 2211 are all fixedly connected with the magnet 24. When the cutter is in the use state, the second cutter head 22 and the third cutter head 23 are in the extended state. At this time, the magnet 24 on the first sealing plate 223 and the magnet 24 on the first stop block 2111 are in the state of attracting each other with different polarities, and the magnet 24 on the second sealing plate 232 and the magnet 24 on the second stop block 2211 are also in the state of attracting each other with different polarities. At this time, the gas pressure between each branch pipe and the sealing plate and the sliding groove is stable, so that the stability of the cutter in use is further improved. When the use of the cutter is completed, the gas pressure is released. At this time, the pulling force of the spring is greater than the attractive force between the magnets 24 and the gravity of the second cutter head 22 and the third cutter head 23, so that the second cutter head 22 and the third cutter head 23 are pulled to reset, so as to prepare for the next use.

[0044] With reference to Figure 2 and Figure 3The threaded ring 5 is detachably connected to the shank 1 and is located at the position close to the first cutter head 21. The outer side of the threaded ring 5 is threadedly connected with a supporting ring 51, and the supporting ring 51 is fixedly connected with a rubber pad 52 on the side away from the connecting shaft 3. When the operator drives the cutter to move downward, the supporting ring 51 is supported on the surface of the flange hole, so that the cutter is more stable when cleaning the flange hole. The rubber pad 52 can reduce the damage of the cutter to the flange.

[0045] The implementation principle of the cutter for cleaning the flange hole is as follows:

[0046] Firstly, the operator installs the cutter on the special fixture through the connecting shaft 3, and then adjusts the position of the cutter to align the axis of the cutter with the axis of the flange hole. The operator slowly moves the cutter downward, and then the supporting ring 51 abuts against the flange.

[0047] At this time, the operator opens the external air pump to make the air holes 25 blow in the cutter. The gas enters the air channel 11 through the air inlet hole 111. Then the operator presses the opening and closing assembly 4 to make the gas in the air channel 11 enter the main air branch 13, the first L-shaped air branch 212, the second L-shaped air branch 2221, the U-shaped air branch 213 and the first air branch 224 through the second air branch 411 on the pressing rod 41, so that the second cutter head 22 and the third cutter head 23 are stretched out. At this time, the reset member 6 is in a stretched state. Therefore, the gas in the air channel 11 blows into the flange hole through the air holes 25 on the multi-stage cutter head assembly 2, so as to realize the cleaning of the hole.

[0048] When the next flange hole needs to be cleaned, the operator closes the air pump to stop the gas from entering the air channel 11. At this time, the operator presses the opening and closing assembly 4 to make the gas flow in each air branch lose, so as to achieve the purpose of pressure relief. At this time, the springs in the first sliding groove 211 and the second sliding groove 221 are pulled to pull the second cutter head 22 and the third cutter head 23 upward, respectively, so as to realize the reset, avoid the damage of the cutter due to the collision of the cutter body, and improve the service life of the cutter.

[0049] The above are the preferred embodiments of the present application, which do not limit the protection scope of the present application. Therefore, any equivalent changes made on the basis of the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A tool for cleaning a flange aperture, characterised in that, The utility model provides a multi -stage cutter head assembly and handle, including handle (1), one end of handle (1) is detachably connected with multi -stage cutter head assembly (2), the other end is detachably connected with connecting shaft (3), multi -stage cutter head assembly (2) and handle (1) are all set up air passage (11), and intercommunication, a plurality of air holes (25) are set up on multi -stage cutter head, and the air inlet hole (111) is set up on handle (1).

2. The tool for cleaning flange holes according to claim 1, wherein The utility model provides a multi -stage cutter head assembly and handle, including handle (1), one end of handle (1) is detachably connected with multi -stage cutter head assembly (2), the other end is detachably connected with connecting shaft (3), multi -stage cutter head assembly (2) and handle (1) are all set up air passage (11), and intercommunication, a plurality of air holes (25) are set up on multi -stage cutter head, and the air inlet hole (111) is set up on handle (1).

3. A tool for cleaning flange holes according to claim 2, characterized in that The utility model discloses a multi -stage cutter head assembly and handle, including handle (1), one end of handle (1) is detachably connected with multi -stage cutter head assembly (2), the other end is detachably connected with connecting shaft (3), multi -stage cutter head assembly (2) and handle (1) are all set up air passage (11), and intercommunication, a plurality of air holes (25) are set up on multi -stage cutter head, and the air inlet hole (111) is set up on handle (1).

4. A tool for cleaning flange holes according to claim 3, characterized in that The utility model discloses a multi -stage cutter head assembly and handle, including handle (1), one end of handle (1) is detachably connected with multi -stage cutter head assembly (2), the other end is detachably connected with connecting shaft (3), multi -stage cutter head assembly (2) and handle (1) are all set up air passage (11), and intercommunication, a plurality of air holes (25) are set up on multi -stage cutter head, and the air inlet hole (111) is set up on handle (1). The utility model discloses a multi -stage cutter head assembly and handle, including handle (1), one end of handle (1) is detachably connected with multi -stage cutter head assembly (2), the other end is detachably connected with connecting shaft (3), multi -stage cutter head assembly (2) and handle (1) are all set up air passage (11), and intercommunication, a plurality of air holes (25) are set up on multi -stage cutter head, and the air inlet hole (111) is set up on handle (1). The utility model discloses a multi -stage cutter head assembly and handle, including handle (1), one end of handle (1) is detachably connected with multi -stage cutter head assembly (2), the other end is detachably connected with connecting shaft (3), multi -stage cutter head assembly (2) and handle (1) are all set up air passage (11), and intercommunication, a plurality of air holes (25) are set up on multi -stage cutter head, and the air inlet hole (111) is set up on handle (1). The utility model discloses a multi -stage cutter head assembly and handle, including handle (1), one end of handle (1) is detachably connected with multi -stage cutter head assembly (2), the other end is detachably connected with connecting shaft (3), multi -stage cutter head assembly (2) and handle (1) are all set up air passage (11), and intercommunication, a plurality of air holes (25) are set up on multi -stage cutter head, and the air inlet hole (111) is set up on handle (1). The utility model discloses a multi -stage cutter head assembly and handle, including handle (1), one end of handle (1) is detachably connected with multi -stage cutter head assembly (2), the other end is detachably connected with connecting shaft (3), multi -stage cutter head assembly (2) and handle (1) are all set up air passage (11), and intercommunication, a plurality of air holes (25) are set up on multi -stage cutter head, and the air inlet hole (111) is set up on handle (1). The utility model discloses a multi -stage cutter head assembly and handle, including handle (1), one end of handle (1) is detachably connected with multi -stage cutter head assembly (2), the other end is detachably connected with connecting shaft (3), multi -stage cutter head assembly (2) and handle (1) are all set up air passage (11), and intercommunication, a plurality of air holes (25) are set up on multi -stage cutter head, and the air inlet hole (111) is set up on handle (1). The utility model discloses a multi -stage cutter head assembly and handle, including handle (1), one end of handle (1) is detachably connected with multi -stage cutter head assembly (2), the other end is detachably connected with connecting shaft (3), multi -stage cutter head assembly (2) and handle (1) are all set up air passage (11), and intercommunication, a plurality of air holes (25) are set up on multi -stage cutter head, and the air inlet hole (111) is set up on handle (1). The utility model discloses a multi -stage cutter head assembly and handle, including handle (1), one end of handle (1) is detachably connected with multi -stage cutter head assembly (2), the other end is detachably connected with connecting shaft (3), multi -stage cutter head assembly (2) and handle (1) are all set up air passage (11), and intercommunication, a plurality of air holes (25) are set up on multi -stage cutter head, and the air inlet hole (111) is set up on handle (1). The utility model discloses a multi -stage cutter head assembly and handle, including handle (1), one end of handle (1) is detachably connected with multi -stage cutter head assembly (2), the other end is detachably connected with connecting shaft (3), multi -stage cutter head assembly (2) and handle (1) are all set up air passage (11), and intercommunication, a plurality of air holes (25) are set up on multi -stage cutter head, and the air inlet hole (111) is set up on handle (1). The utility model discloses a multi -stage cutter head assembly and handle, including handle (1), one end of handle (1) is detachably connected with multi -stage cutter head assembly (2), the other end is detachably connected with connecting shaft (3), multi -stage cutter head assembly (2) and handle (1) are all set up air passage (11), and intercommunication, a plurality of air holes (25) are set up on multi -stage cutter head, and the air inlet hole (111) is set up on handle (1). The utility model discloses a multi -stage cutter head assembly and handle, including handle (1), one end of handle (1) is detachably connected with multi -stage cutter head assembly (2), the other end is detachably connected with connecting shaft (3), multi -stage cutter head assembly (2) and handle (1) are all set up air passage (11), and intercommunication, a plurality of air holes (25) are set up on multi -stage cutter head, and the air inlet hole (111) is set up on handle (1). The utility model discloses a multi -stage cutter head assembly and handle, including handle (1), one end of handle (1) is detachably connected with multi -stage cutter head assembly (2), the other end is detachably connected with connecting shaft (3), multi -stage cutter head assembly (2) and handle (1) are all set up air passage (11), and intercommunication, a plurality of air holes (25) are set up on multi -stage cutter head, and the air inlet hole (111) is set up on handle (1). The utility model discloses a multi -stage cutter head assembly and handle, including handle (1), one end of handle (1) is detachably connected with multi -stage cutter head assembly (2), the other end is detachably connected with connecting shaft (3), multi -stage cutter head assembly (2) and handle (1) are all set up air passage (11), and intercommunication, a plurality of air holes (25) are set up on multi -stage cutter head, and the air inlet hole (111) is set up on handle (1). The utility model discloses a multi -stage cutter head assembly and handle, including handle (1), one end of handle (1) is detachably connected with multi -stage cutter head assembly (2), the other end is detachably connected with connecting shaft (3), multi -stage cutter head assembly (2) and handle (1) are all set up air passage (11), and intercommunication, a plurality of air holes (25) are set up on multi -stage cutter head, and the air inlet hole (111) is set up on handle (1). The utility model discloses a multi -stage cutter head assembly and handle, including handle (1), one end of handle (1) is detachably connected with multi -stage cutter head assembly (2), the other end is detachably connected with connecting shaft (3), multi -stage cutter head assembly (2) and handle (1) are all set up air passage (11), and intercommunication, a plurality of air holes (25) are set up on multi - 5. The tool for cleaning flange holes according to claim 2, wherein The first chute (211) and the second chute (221) are detachably connected with the first stopper (2111) and the second stopper (2211) respectively, and reset members (6) are arranged in the first chute (211) and the second chute (221), and the reset members (6) are located between the first stopper (2111) and the first sliding block (222) and between the second stopper (2211) and the second sliding block (231) respectively.

6. The tool for cleaning flange holes according to claim 3, wherein The first sealing plate (223), the second sealing plate (232), the first stopper (2111) and the second stopper (2211) are fixedly connected with magnets (24).

7. The tool for cleaning flange holes according to claim 1, wherein The shank (1) is detachably connected with a threaded ring (5) near the first tool bit (21), and the threaded ring (5) is threadedly connected with a supporting ring (51).

8. A tool for cleaning flange holes according to claim 7, characterized in that The supporting ring (51) is fixedly connected with a rubber pad (52) on the side away from the connecting shaft (3).

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