Circulating inner-cooling type facing cutter assembly

Abstract

The invention relates to the technical field of facing cutters, in particular to a circulating inner-cooling facing cutter assembly which comprises a cutter body, a notch is formed in the surface of the cutter body, a cutter is mounted at the notch, a flow channel is formed in the cutter body, and an outlet of the flow channel is aligned to the side face of the cutter; the mounting cylinder is fixedly mounted on the surface of the disc body, the middle of the mounting cylinder is communicated with the flow channel, a connecting flange is fixedly mounted at the end, away from the disc body, of the mounting cylinder, and the mounting cylinder can be fixed to a machine tool spindle through the connecting flange; a filter screen; the filter screen is fixedly mounted in the middle of the mounting cylinder; the cleaning assembly comprises a scraping and washing assembly and a flushing assembly; and the dredging assembly is arranged in the middle of the mounting cylinder, and meshes of the filter screen can be dredged through the dredging assembly. According to the milling cutter disc, impurities can be effectively intercepted, so that the whole milling cutter disc can be used on middle-end and low-end machine tools with low cooling liquid purity, and the application range is greatly widened.

Description

Technical Field

[0001] The invention relates to the technical field of milling cutter discs, in particular to a circulating internal cooling type milling cutter disc assembly. Background Art

[0002] The milling cutter disc is a tool used to mill the plane of the workpiece during the machining process. Because it is larger than the general milling cutter and shaped like a disc, it is called a milling cutter disc. During the working process of the milling cutter disc, the milling cutter disc that sprays coolant from the inside to the outside is called an internally cooled milling cutter disc.

[0003] This type of internally cooled milling cutter disc is generally machined with corresponding flow channels inside for the circulation of coolant. However, due to the limited volume of the milling cutter disc, the coolant flow channels of most milling cutter discs are relatively small. Once impurities appear in the coolant, they are easily blocked. As a result, higher requirements are placed on the purity of the coolant, which will greatly increase the cost of the coolant, making it inconvenient to use it in mid- and low-end machine tools and having great limitations in use. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a circulating internal cooling type milling cutter disc assembly.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a circulating internal cooling type milling cutter disc assembly, comprising: a disc body, a notch is provided on the surface of the disc body, a tool is fixedly installed at the notch by screws, a flow channel is provided inside the disc body, and the outlet of the flow channel is aligned with the side of the tool; a mounting tube, the mounting tube is fixedly installed on the surface of the disc body, and the middle of the mounting tube is connected to the flow channel, and the end of the mounting tube away from the disc body is fixedly installed with a connecting flange, and can be fixed to the main shaft of the machine tool through the connecting flange, and when the connecting flange is fixed to the main shaft of the machine tool, the mounting tube is aligned with the main shaft center of the machine tool Water outlet connection; filter; the filter is fixedly installed in the middle of the installation cylinder; a cleaning component, the cleaning component includes a scraping component and a flushing component, and the scraping component can be used to scrape and wash the surface of the filter, and the flushing component can be used to flush the impurities scraped off by the scraping component out of the installation cylinder; a dredging component, the dredging component is arranged in the middle of the installation cylinder, and the mesh of the filter can be dredged by the dredging component; a power component, the power component is arranged in the middle of the installation cylinder, and the power component is connected to the scraping component and the dredging component at the same time, and the scraping component and the dredging component can be driven to operate synchronously by the power component.

[0006] As a preferred technical solution of the present invention, the scraping and washing assembly includes a scraping bar, which is rotatably installed in the middle of the mounting cylinder, and the scraping bar can rotate to scrape off impurities intercepted on the filter surface, while the scraping bar is between the filter and the liquid inlet of the mounting cylinder.

[0007] As a preferred technical solution of the present invention, the flushing component includes a discharge gap, a sealing sleeve and a trigger component, the mounting cylinder includes a first sub-cylinder and a second sub-cylinder, the first sub-cylinder is fixedly connected to the disc body, the second sub-cylinder is fixedly connected to the connecting flange, the discharge gap is between the first sub-cylinder and the second sub-cylinder, and the discharge gap is aligned with the filter screen, and the first sub-cylinder and the second sub-cylinder are fixedly connected by a pin shaft, the sealing sliding sleeve of the sealing sleeve is arranged on the discharge gap, the trigger component is connected between the sealing sleeve and the second sub-cylinder, and the sealing sleeve can be driven to slide by the trigger component.

[0008] As a preferred technical solution of the present invention, the trigger assembly includes a pressure sleeve, a slip ring, a connecting sleeve, a liquid inlet and a reset spring. The pressure sleeve is fixedly sleeved on the surface of the second sub-cylinder, and a pressure chamber is present between the pressure sleeve and the surface of the second sub-cylinder. The slip ring seal is slidably installed in the pressure chamber. The connecting sleeve is slidably sleeved on the surface of the second sub-cylinder, and one end of the connecting sleeve extends into the pressure chamber and is fixedly connected to the slip ring, and the other end is fixedly connected to the sealing sleeve. At the same time, the sliding of the connecting sleeve can drive the sealing sleeve to separate from the discharge gap and expose it. The liquid inlet is opened through the surface of the second sub-cylinder and is connected to the pressure chamber, and the liquid inlet is located between a side of the slip ring away from the connecting sleeve and an inner side of the pressure chamber. The reset spring is a compression spring, and the reset spring is located between a side of the slip ring close to the connecting sleeve and an inner side of the pressure chamber.

[0009] As a preferred technical solution of the present invention, the dredging component includes a dredging plate and a plug-in column. The dredging plate is slidably installed in the first sub-cylinder and is semicircular and has two columns. The two dredging plates are symmetrically distributed and staggered with each other. There are several plug-in columns and they are all installed on the dredging plate. The position of the plug-in columns is consistent with the mesh of the filter. At the same time, the sliding of the dredging plate can drive the plug-in columns to be inserted into the mesh of the filter.

[0010] As a preferred technical solution of the present invention, the dredging component also includes a guide groove and a guide protrusion, the guide groove is opened on the inner wall of the first sub-cylinder, the guide protrusion is fixedly installed on the side of the dredging plate, and the guide protrusion is slidably installed in the guide groove.

[0011] As a preferred technical solution of the present invention, the power assembly includes a drive shaft, a blade, a mounting frame, a first screw rod, a second screw rod, a first threaded seat, a second threaded seat, a first connecting rod, and a second connecting rod. The mounting frame is fixedly installed in the mounting cylinder, the drive shaft is rotatably installed in the middle of the mounting frame, the blade is fixedly installed on the drive shaft, and the blade is inside the second sub-cylinder, the first screw rod and the second screw rod are both coaxially connected to the drive shaft, and the first screw rod and the second screw rod are both reciprocating screw rods, the first threaded seat is threadedly connected to the first screw rod, the second screw rod is threadedly connected to the second threaded seat, the first connecting rod is connected between the first threaded seat and a dredging plate, and the second connecting rod is connected between the second threaded seat and another dredging plate.

[0012] As a preferred technical solution of the present invention, the moving directions of the first threaded seat and the second threaded seat are opposite.

[0013] Compared with the prior art, the present invention can achieve the following beneficial effects:

[0014] 1. During the entire use process, the coolant entering the milling cutter disc can be filtered through a filter. In this way, impurities can be effectively intercepted to prevent impurities from clogging the flow channel inside the milling cutter disc. As a result, the entire milling cutter disc can be used on some low- and medium-end machine tools with low coolant purity, greatly increasing the scope of application.

[0015] 2. During use, the cleaning component can automatically scrape away impurities on the filter surface to ensure that the filter can work normally and stably. Even when impurities accumulate and the scraper cannot be cleaned in time, the flushing component will automatically discharge the accumulated impurities out of the milling cutter disc, which can effectively ensure the continuous and stable operation of the milling cutter disc.

[0016] 3. During use, the dredging component will automatically dredge the mesh of the filter to prevent the mesh of the filter from being blocked, further enhancing the cleaning ability of the filter, thereby further improving the anti-blocking function of the milling cutter disc, and making the entire milling cutter disc suitable for more machine tools. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention from a first viewing angle;

[0018] Figure 2 A schematic diagram of the second viewing angle of the three-dimensional structure of the present invention;

[0019] Figure 3 It is a schematic diagram of the internal structure of the present invention;

[0020] Figure 4 For the present invention Figure 3 Enlarged schematic diagram at point A in the middle.

[0021] Among them: 1. disc; 2. notch; 3. tool; 4. flow channel; 5. mounting cylinder; 501, first sub-cylinder; 502, second sub-cylinder; 6. connecting flange; 7. filter screen; 8. scraper; 9. discharge gap; 10. sealing sleeve; 11. pin shaft; 12. pressure sleeve; 13. slip ring; 14. connecting sleeve; 15. liquid inlet hole; 16. reset spring; 17. pressure chamber; 18. dredging plate; 19. plug column; 20. guide groove; 21. guide protrusion; 22. drive shaft; 23. paddle; 24. mounting frame; 25. first screw rod; 26. second screw rod; 27. first threaded seat; 28. second threaded seat; 29. ​​first connecting rod; 30. second connecting rod. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work all belong to the protection scope of the present invention. The experimental methods in the following embodiments, unless otherwise specified, are conventional methods, and the materials, reagents, etc. used in the following embodiments, unless otherwise specified, can all be obtained from commercial channels.

[0023] Embodiment: Figure 1-4 As shown, a circulating internal cooling type milling cutter disc assembly comprises:

[0024] A disc body 1, a notch 2 is provided on the surface of the disc body 1, a cutter 3 is fixedly installed at the notch 2 by screws, a flow channel 4 is provided inside the disc body 1, and an outlet of the flow channel 4 is aligned with the side of the cutter 3;

[0025] The mounting tube 5 is fixedly mounted on the surface of the disc body 1, and the middle of the mounting tube 5 is communicated with the flow channel 4. The end of the mounting tube 5 away from the disc body 1 is fixedly mounted with a connecting flange 6, and can be fixed to the machine tool spindle through the connecting flange 6. When the connecting flange 6 is fixed to the machine tool spindle, the mounting tube 5 is communicated with the water outlet at the center of the spindle of the machine tool;

[0026] Filter screen 7; filter screen 7 is fixedly installed in the middle of the mounting cylinder 5;

[0027] A cleaning component, which includes a scraping component and a flushing component, and the scraping component can be used to scrape the surface of the filter screen 7, and the flushing component can be used to flush the impurities scraped by the scraping component out of the mounting tube 5;

[0028] A dredging component is arranged in the middle of the installation cylinder 5, and the mesh of the filter screen 7 can be dredged by the dredging component;

[0029] The power component is arranged in the middle of the installation tube 5, and the power component is connected with the scraping and washing component and the dredging component at the same time, and the scraping and washing component and the dredging component can be driven to operate synchronously by the power component.

[0030] When in use, it is only necessary to fix the entire milling cutter disc to the machine tool spindle through the connecting flange 6. Afterwards, during use, the central water outlet of the machine tool spindle will pump the coolant into the mounting tube 5. At this time, when the spindle rotates and drives the milling cutter disc to rotate, the coolant will pass through the flow channel 4 and then spray out from the surface of the milling cutter disc, thereby cooling the entire milling cutter disc and the tool 3.

[0031] When the coolant contains impurities, they will be intercepted by the filter 7. At this time, under the action of the driving component, the impurities intercepted on the filter 7 will be continuously cleaned by the scraping component and the flushing component, thereby ensuring that the surface of the filter 7 is always clean. At the same time, the dredging component will also operate synchronously to clean the impurities blocked in the middle of the mesh of the filter 7. In this way, the milling cutter disc can be avoided from being blocked, and it is suitable for machine tools with coolant containing more impurities.

[0032] The scraping and washing assembly includes a scraping bar 8, which is rotatably installed in the middle of the installation cylinder 5. The scraping bar 8 can rotate to scrape off impurities intercepted on the surface of the filter screen 7. At the same time, the scraping bar 8 is between the filter screen 7 and the liquid inlet of the installation cylinder 5.

[0033] The flushing assembly includes a discharge gap 9, a sealing sleeve 10 and a trigger assembly. The mounting cylinder 5 includes a first sub-cylinder 501 and a second sub-cylinder 502. The first sub-cylinder 501 is fixedly connected to the disc body 1, and the second sub-cylinder 502 is fixedly connected to the connecting flange 6. The discharge gap 9 is located between the first sub-cylinder 501 and the second sub-cylinder 502, and the discharge gap 9 is aligned with the filter screen 7. At the same time, the first sub-cylinder 501 and the second sub-cylinder 502 are fixedly connected by a pin shaft 11. The sealing sleeve 10 is sealed and slidably sleeved on the discharge gap 9. The trigger assembly is connected between the sealing sleeve 10 and the second sub-cylinder 502, and the sealing sleeve 10 can be driven to slide by the trigger assembly.

[0034] In this way, when a certain amount of impurities intercepted at the front end of the filter screen 7 accumulates, the rotation of the scraper bar 8 can hardly ensure the cleaning effect. At this time, the filter screen 7 is blocked again. At this time, the trigger component will automatically operate to remove the sealing sleeve 10 to expose the discharge gap 9. In this way, the liquid pressure inside the second sub-cylinder 502 will be released from the discharge gap 9, thereby taking away the accumulated impurities and achieving the effect of discharging impurities.

[0035] The trigger assembly includes a pressure sleeve 12, a slip ring 13, a connecting sleeve 14, a liquid inlet hole 15 and a reset spring 16. The pressure sleeve 12 is fixedly sleeved on the surface of the second sub-barrel 502, and a pressure chamber 17 is provided between the pressure sleeve 12 and the surface of the second sub-barrel 502. The slip ring 13 is sealingly and slidably installed in the pressure chamber 17. The connecting sleeve 14 is slidably sleeved on the surface of the second sub-barrel 502, and one end of the connecting sleeve 14 extends into the pressure chamber 17 and is fixedly connected to the slip ring 13, and the other end is fixedly connected to the sealing sleeve 10. At the same time, the sliding of the connecting sleeve 14 can drive the sealing sleeve 10 to separate from the discharge gap 9 and expose it. The liquid inlet hole 15 is opened on the surface of the second sub-barrel 502 and is connected to the pressure chamber 17. The liquid inlet hole 15 is located between a side of the slip ring 13 away from the connecting sleeve 14 and an inner side of the pressure chamber 17. The reset spring 16 is a compression spring, and the reset spring 16 is located between a side of the slip ring 13 close to the connecting sleeve 14 and an inner side of the pressure chamber 17.

[0036] In this way, when a certain amount of impurities intercepted by the front end of the filter screen 7 accumulates, the rotation of the scraper bar 8 can hardly ensure the cleaning effect. At this time, the filter screen 7 is blocked again, which will cause the liquid pressure inside the second sub-cylinder 502 to increase greatly. The pressure will enter the pressure chamber 17 from the liquid inlet hole 15, thereby pushing the slip ring 13 to slide. The slip ring 13 will drive the sealing sleeve 10 to move synchronously through the connecting sleeve 14, so that it is separated from the discharge gap 9. At this time, the discharge gap 9 will be exposed. In this way, the liquid pressure inside the second sub-cylinder 502 will be discharged from the discharge gap 9, thereby taking away the accumulated impurities until the pressure in the second sub-cylinder 502 is reduced. At this time, the slip ring 13 will be reset under the action of the reset spring 16.

[0037] The dredging component includes a dredging plate 18 and a plug 19. The dredging plate 18 is slidably installed in the first sub-cylinder 501, and is semicircular and has two. The two dredging plates 18 are symmetrically distributed and staggered with each other. There are several plugs 19, and they are all installed on the dredging plate 18. The position of the plug 19 is consistent with the mesh of the filter 7. At the same time, the sliding of the dredging plate 18 can drive the plug 19 to be inserted into the mesh of the filter 7.

[0038] In this way, the dredging plate 18 only needs to slide to drive the plug post 19 to be inserted into the middle of the mesh of the filter screen 7 to achieve the dredging effect.

[0039] The dredging component also includes a guide groove 20 and a guide protrusion 21. The guide groove 20 is opened on the inner wall of the first sub-cylinder 501. The guide protrusion 21 is fixedly installed on the side of the dredging plate 18, and the guide protrusion 21 is slidably installed in the guide groove 20.

[0040] In this way, the sliding of the dredging plate 18 can be guided to ensure that the plug post 19 can be stably inserted into the mesh of the filter screen 7.

[0041] The power assembly includes a drive shaft 22, a paddle 23, a mounting frame 24, a first screw rod 25, a second screw rod 26, a first threaded seat 27, a second threaded seat 28, a first connecting rod 29, and a second connecting rod 30. The mounting frame 24 is fixedly installed in the mounting tube 5, the drive shaft 22 is rotatably installed in the middle of the mounting frame 24, the paddle 23 is fixedly installed on the drive shaft 22, and the paddle 23 is inside the second sub-tube 502, the first screw rod 25 and the second screw rod 26 are both coaxially connected to the drive shaft 22, and the first screw rod 25 and the second screw rod 26 are both reciprocating screw rods, the first threaded seat 27 is threadedly connected to the first screw rod 25, the second screw rod 26 is threadedly connected to the second threaded seat 28, the first connecting rod 29 is connected between the first threaded seat 27 and a dredging plate 18, the second connecting rod 30 is connected between the second threaded seat 28 and another dredging plate 18, and the moving directions of the first threaded seat 27 and the second threaded seat 28 are opposite.

[0042] In this way, when the coolant flows through the inside of the mounting tube 5, the coolant will drive the paddle 23 to rotate, and then drive the drive shaft 22 to rotate, and the drive shaft 22 will drive the scraper 8 to rotate. In addition, during the rotation of the drive shaft 22, the first screw rod 25 and the second screw rod 26 will also be synchronously driven to rotate, thereby driving the first threaded seat 27 and the second threaded seat 28 to move, which will drive the dredging plate 18 to slide through the first connecting rod 29 and the second connecting rod 30, so that the plug 19 is inserted into the mesh of the filter 7, which can push out the impurities blocked in the middle of the mesh of the filter 7.

[0043] Therefore, the complete usage process is to first fix the entire milling cutter disc to the machine tool spindle through the connecting flange 6. Then, during use, the central water outlet of the machine tool spindle will pump the coolant into the mounting tube 5. At this time, when the spindle rotates and drives the milling cutter disc to rotate, the coolant will pass through the flow channel 4 and then spray out from the surface of the milling cutter disc, thereby cooling the entire milling cutter disc and the tool 3.

[0044] When the coolant contains larger particles of impurities, these impurities will be intercepted by the filter 7, thereby preventing the impurities from clogging the coolant flow channel 4 of the milling cutter disc, thereby playing a good protective role. In addition, when the coolant flows through the inside of the mounting tube 5, the coolant will also drive the paddle 23 to rotate, and then drive the drive shaft 22 to rotate. The drive shaft 22 will drive the scraper 8 to rotate, and the scraper 8 can scrape off the impurities on the surface of the filter 7, thereby preventing the filter 7 from being blocked and ensuring a stable supply of coolant.

[0045] During the rotation of the drive shaft 22, the first screw rod 25 and the second screw rod 26 will be synchronously driven to rotate, thereby driving the first threaded seat 27 and the second threaded seat 28 to move, which will drive the dredging plate 18 to slide through the first connecting rod 29 and the second connecting rod 30, so that the plug 19 is inserted into the mesh of the filter 7, which can push out the impurities blocked in the middle of the mesh of the filter 7, further enhancing the cleaning ability of the filter 7, and because the moving directions of the first threaded seat 27 and the second threaded seat 28 are opposite, the two dredging plates 18 will slide back and forth alternately, thereby ensuring that the filter 7 can always have coolant passing smoothly.

[0046] When a certain amount of impurities intercepted at the front end of the filter screen 7 accumulate, the rotation of the scraper bar 8 can hardly ensure the cleaning effect. At this time, the filter screen 7 is blocked again, which will cause the liquid pressure inside the second sub-barrel 502 to increase greatly. The pressure will enter the pressure chamber 17 from the liquid inlet hole 15, thereby pushing the slip ring 13 to slide. The slip ring 13 will drive the sealing sleeve 10 to move synchronously through the connecting sleeve 14, so that it is separated from the discharge gap 9. At this time, the discharge gap 9 will be exposed. In this way, the liquid pressure inside the second sub-barrel 502 will be discharged from the discharge gap 9, thereby taking away the accumulated impurities until the pressure in the second sub-barrel 502 is reduced. At this time, the slip ring 13 will be reset under the action of the reset spring 16. In this process, the function of automatic impurity removal can be fully realized, further ensuring the stable supply of coolant.

[0047] In summary, during the entire use process, the coolant entering the milling cutter disc can be filtered through the filter 7, so that impurities can be effectively intercepted, thereby preventing impurities from clogging the flow channel 4 inside the milling cutter disc, and the entire milling cutter disc can be used on some mid- and low-end machine tools with low coolant purity, greatly increasing the scope of application.

[0048] Moreover, during use, under the action of the cleaning component, impurities intercepted on the surface of the filter 7 can be automatically scraped off, thereby ensuring that the filter 7 can work normally and stably. Even when impurities accumulate and the scraper 8 cannot be cleaned in time, the flushing component will automatically discharge these accumulated impurities out of the milling cutter disc, which will effectively ensure the continuous and stable operation of the milling cutter disc.

[0049] At the same time, during use, the unclogging component will automatically unblock the mesh of the filter 7 to prevent the mesh of the filter 7 from being blocked, further enhancing the cleaning ability of the filter 7, thereby further improving the anti-clogging function of the milling cutter disc, and making the entire milling cutter disc applicable to more machine tools.

[0050] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A circulating internal cooling type milling cutter assembly, characterized in that: include: A disc body (1), wherein a notch (2) is provided on the surface of the disc body (1), a tool (3) is fixedly mounted at the notch (2) by means of screws, a flow channel (4) is provided inside the disc body (1), and an outlet of the flow channel (4) is aligned with a side surface of the tool (3); A mounting tube (5), wherein the mounting tube (5) is fixedly mounted on the surface of the disk body (1), and the middle of the mounting tube (5) is communicated with the flow channel (4), and a connecting flange (6) is fixedly mounted on the end of the mounting tube (5) away from the disk body (1), and can be fixed to the main shaft of the machine tool through the connecting flange (6), and when the connecting flange (6) is fixed to the main shaft of the machine tool, the mounting tube (5) is communicated with the water outlet at the center of the main shaft of the machine tool; A filter screen (7); the filter screen (7) is fixedly mounted in the middle of the mounting cylinder (5); A cleaning component, the cleaning component comprising a scraping component and a flushing component, and the scraping component can be used to scrape and clean the surface of the filter screen (7), and the flushing component can be used to flush impurities scraped off by the scraping component out of the mounting tube (5); A dredging component, which is arranged in the middle of the installation cylinder (5) and can be used to dredge the mesh of the filter screen (7); A power assembly is arranged in the middle of the installation cylinder (5), and the power assembly is connected to the scraping and washing assembly and the unblocking assembly at the same time, and the scraping and washing assembly and the unblocking assembly can be driven to operate synchronously by the power assembly.

2. A circulating internal cooling type milling cutter assembly according to claim 1, characterized in that: The scraping and washing assembly comprises a scraping bar (8) which is rotatably mounted in the middle of the mounting cylinder (5). The scraping bar (8) can scrape off impurities intercepted on the surface of the filter screen (7) when it rotates, and the scraping bar (8) is located between the filter screen (7) and the liquid inlet of the mounting cylinder (5).

3. A circulating internal cooling type milling cutter assembly according to claim 2, characterized in that: The flushing assembly comprises a discharge gap (9), a sealing sleeve (10) and a trigger assembly. The mounting cylinder (5) comprises a first sub-cylinder (501) and a second sub-cylinder (502). The first sub-cylinder (501) is fixedly connected to the disk body (1), and the second sub-cylinder (502) is fixedly connected to the connecting flange (6). The discharge gap (9) is located between the first sub-cylinder (501) and the second sub-cylinder (502), and the discharge gap (9) is aligned with the filter screen (7). The first sub-cylinder (501) and the second sub-cylinder (502) are fixedly connected via a pin shaft (11). The sealing sleeve (10) is sealed and slidably sleeved on the discharge gap (9). The trigger assembly is connected between the sealing sleeve (10) and the second sub-cylinder (502), and the sealing sleeve (10) can be driven to slide by the trigger assembly.

4. A circulating internal cooling type milling cutter assembly according to claim 3, characterized in that: The trigger assembly comprises a pressure sleeve (12), a slip ring (13), a connecting sleeve (14), a liquid inlet hole (15) and a reset spring (16); the pressure sleeve (12) is fixedly sleeved on the surface of the second sub-barrel (502), and a pressure chamber (17) is provided between the pressure sleeve (12) and the surface of the second sub-barrel (502); the slip ring (13) is sealingly and slidably installed in the pressure chamber (17); the connecting sleeve (14) is slidably sleeved on the surface of the second sub-barrel (502), and one end of the connecting sleeve (14) extends into the pressure chamber (17) and is fixedly connected to the slip ring (13). The other end is fixedly connected to the sealing sleeve (10), and the connecting sleeve (14) slides to drive the sealing sleeve (10) to separate from the discharge gap (9) and expose it. The liquid inlet hole (15) is opened through the surface of the second sub-cylinder (502) and is connected to the pressure chamber (17). The liquid inlet hole (15) is located between a side of the sliding ring (13) away from the connecting sleeve (14) and an inner side of the pressure chamber (17). The reset spring (16) is a compression spring, and the reset spring (16) is located between a side of the sliding ring (13) close to the connecting sleeve (14) and an inner side of the pressure chamber (17).

5. The circulating internal cooling type milling cutter head assembly according to claim 3, characterized in that: The dredging component comprises a dredging plate (18) and a plug (19). The dredging plate (18) is slidably mounted in the first sub-cylinder (501) and is semicircular and has two dredging plates (18). The two dredging plates (18) are symmetrically distributed and mutually staggered. There are a plurality of plugs (19) which are all mounted on the dredging plate (18). The position of the plugs (19) is consistent with the mesh of the filter screen (7). At the same time, the sliding of the dredging plate (18) can drive the plugs (19) to be inserted into the mesh of the filter screen (7).

6. A circulating internal cooling type milling cutter head assembly according to claim 5, characterized in that: The dredging assembly further comprises a guide groove (20) and a guide protrusion (21), wherein the guide groove (20) is provided on the inner wall of the first sub-cylinder (501), the guide protrusion (21) is fixedly mounted on the side of the dredging plate (18), and the guide protrusion (21) is slidably mounted in the guide groove (20).

7. A circulating internal cooling type milling cutter assembly according to claim 5 or 6, characterized in that: The power assembly comprises a driving shaft (22), a paddle (23), a mounting frame (24), a first screw rod (25), a second screw rod (26), a first threaded seat (27), a second threaded seat (28), a first connecting rod (29), and a second connecting rod (30); the mounting frame (24) is fixedly mounted in the mounting cylinder (5); the driving shaft (22) is rotatably mounted in the middle of the mounting frame (24); the paddle (23) is fixedly mounted on the driving shaft (22), and the paddle (23) is located inside the second sub-cylinder (502); The first screw rod (25) and the second screw rod (26) are both coaxially connected to the drive shaft (22), and the first screw rod (25) and the second screw rod (26) are both reciprocating screw rods. The first threaded seat (27) is threadedly connected to the first screw rod (25), and the second screw rod (26) is threadedly connected to the second threaded seat (28). The first connecting rod (29) is connected between the first threaded seat (27) and a dredging plate (18), and the second connecting rod (30) is connected between the second threaded seat (28) and another dredging plate (18).

8. A circulating internal cooling type milling cutter head assembly according to claim 7, characterized in that: The first threaded seat (27) and the second threaded seat (28) move in opposite directions.

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