A kind of air pressure boost formula tool flushing device applied to numerical control machine tool, machining center

Abstract

The application discloses a kind of air pressure boost formula cutter flushing device applied to numerical control machine tool, machining center, including machine tool, product fixed seat, tool holder, main shaft, processing knife and cleaning mechanism, the product fixed seat and tool holder are respectively left and right structure and are arranged in the inside of machine tool, the main shaft is arranged in the left end of tool holder, the processing knife is arranged in the left end of main shaft, and the cleaning mechanism is arranged in the inside of machine tool.The scheme is by "liquid circuit circulation+air pressure boost" collaborative design, has flushing efficiency, pipeline stability, operation safety and installation versatility, comprehensively solves the defects of existing device, accurately meets the on-line cleaning demand of numerical control machine tool and machining center automatic tool changing link, and guarantees production continuous stable and efficient.

Description

Technical Field

[0001] This invention relates to the field of machine tool cleaning technology, specifically to a pneumatic-assisted tool flushing device for CNC machine tools and machining centers. Background Technology

[0002] During metal cutting processes, CNC machine tools and machining centers continuously accumulate iron filings and oil stains on their cutting tools. If these are not cleaned in time, they can affect machining accuracy and tool life. The industry generally requires online cleaning of cutting tools during automatic tool changing to ensure continuous, stable, and efficient production operations. Therefore, there is an urgent need for a dedicated tool cleaning solution adapted to the working conditions of machine tools.

[0003] Existing conventional tool cleaning devices have many shortcomings: the cutting fluid pump pressure is too low, the flushing force is insufficient, and it is difficult to thoroughly clean iron filings and oil stains on the tool surface. Some devices are not even equipped with a dedicated cleaning structure. The pipeline is prone to dry suction and water interruption, resulting in unstable water spray and poor cleaning effect. The system pressure lacks effective control and a safe pressure relief mechanism, which can easily lead to safety hazards such as pipe bursts and leaks. At the same time, the air and water pipe joints have poor compatibility when modifying machine tools, the installation is cumbersome, and the versatility is low.

[0004] Therefore, a solution is needed. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a pneumatic-assisted tool flushing device for CNC machine tools and machining centers, thereby solving the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A pneumatic-assisted tool flushing device for CNC machine tools and machining centers includes a machine tool, a product holder, a tool holder, a spindle, a machining tool, and a cleaning mechanism. The product holder and the tool holder are respectively arranged in a left-right configuration inside the machine tool. The spindle is located at the left end of the tool holder, the machining tool is located at the left end of the spindle, and the cleaning mechanism is located inside the machine tool. The cleaning mechanism includes a chamber, a collection pipe, a cutting fluid tank, a cutting fluid pump, a water guide pipe (I), a filter inlet, a filter, a filter outlet, a mounting plate (I), a water guide pipe (II), a storage tank, a mounting plate (II), a mounting bracket, a mounting plate, a T-tube, a pressure relief valve, a pressure boosting valve, a return pipe, a mounting plate (III), a short pipe (I), a three-way valve, a short pipe (II), an air source, a long pipe, a pressure sensor, a water guide pipe (III), an air discharge valve, and a nozzle. The chamber is located inside the lower half of the machine tool, and the collection pipe is located at the top of the middle part of the chamber and communicates with the upper half of the machine tool. The cutting fluid tank is located at the bottom of the collection pipe, the cutting fluid pump is located at the bottom of the right end of the cutting fluid tank, the first water guide pipe is located at the right end of the cutting fluid pump and extends upward, the filter inlet is located at the top of the first water guide pipe, the filter is located at the right end of the filter inlet, the filter outlet is located at the right end of the filter, the first fixing plate evenly fixes the filter at the rear end of the tank cavity, the second water guide pipe is located at the top of the filter outlet and extends upward, and the liquid storage tank is located at the top of the second water guide pipe. The second mounting plate evenly fixes the second water guide pipe inside the machine tool at the rear end. The fixing bracket is located at the right end of the liquid storage tank. The fixing plate is located at the right end of the fixing bracket and connected to the rear end of the machine tool. The T-tube is located at the top of the liquid storage tank. The pressure relief valve and the pressure boosting valve are respectively located at the left and right ends of the T-tube. The return pipe is located at the left end of the pressure relief valve and extends downward to the top of the cutting fluid tank. The third mounting plate evenly fixes the return pipe inside the machine tool and at the rear end of the housing cavity. The first short pipe is located at the right end of the pressurizing valve, the three-way valve is located at the right end of the first short pipe, the second short pipe is located at the rear end of the three-way valve, the air source is located at the rear end of the second short pipe and inside the machine tool, the long pipe is located at the right end of the three-way valve, the pressure sensor is located at the left end of the liquid storage tank, the third water guide pipe is located at the right end of the liquid storage tank and extends to the right, the discharge air valve is located at the upper left of the tool holder and at the top of the machining tool, and the nozzle is located at the bottom of the air valve and at the left end of the tool holder.

[0007] Preferably, the filter inlet, filter, and filter outlet are integrally formed and have an overall T-shaped structure.

[0008] Preferably, the second water guide pipe extends upward through the box cavity to the upper half of the machine tool. The second water guide pipe located in the upper half of the machine tool extends to the left to the middle and then continues to extend upward. The length of the fixed plate in the front-back direction is greater than the diameter of the liquid storage tank. The liquid storage tank is located in the front half of the fixed plate.

[0009] Preferably, the height of the long tube portion of the T-shaped tube is higher than the height of the top of the fixing plate.

[0010] Preferably, the long tube and the right end of the three-way valve first extend to the right and then extend vertically downward to the left end of the air discharge valve, and finally the long tube connects vertically to the right to the air discharge valve.

[0011] Preferably, the water guide pipe extends to the right from the right end of the liquid storage tank, then extends vertically downward through the fixing frame, then extends to the right again, and finally connects downward to the top of the discharge air valve.

[0012] Preferably, the first water pipe, the second water pipe, the return pipe, the long pipe, and the third water pipe are all made of flexible tubing.

[0013] This invention provides a pneumatically boosted tool flushing device for CNC machine tools and machining centers. It offers the following advantages: 1. Adopting a dual power design of "cutting fluid pump + air pressure booster", the air source, three-way valve, pressurization valve and other components work together to increase the pressure, and the nozzle sprays precisely, greatly improving the flushing pressure and cleaning effect, ensuring machining accuracy and tool life.

[0014] Water pipes 1, 2, and 3 are made of flexible hoses and are designed with a liquid storage tank for temporary pressure stabilization and a closed-loop circulation system to prevent dry suction and water interruption in the pipeline and ensure stable water spray from the nozzles.

[0015] 3. A pressure control system is constructed based on T-tubes, pressure relief valves, pressure boosting valves, and pressure sensors. When the pressure exceeds the limit, it is released and returned through the return pipe to avoid the risk of pipe burst and leakage, and improve operational safety.

[0016] 4. The cleaning mechanism is flexibly installed through multiple sets of fixed components. The pipeline uses flexible hose connections and the connectors are compatible with mainstream specifications. It is easy to assemble and can be adapted to various CNC machine tools and machining centers, making it highly versatile. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the filter and its surrounding components according to the present invention; Figure 3 This is a schematic diagram of the liquid storage tank and its surrounding components according to the present invention.

[0018] In the diagram: 1-Machine tool; 2-Product mounting base; 3-Tool holder; 4-Spindle; 5-Machining tool; 6-Cleaning mechanism; 61-Box cavity; 62-Collection pipe; 63-Cutting fluid tank; 64-Cutting fluid pump; 65-Water guide pipe one; 66-Filter inlet; 67-Filter; 68-Filter outlet; 69-Fixed mounting plate one; 610-Water guide pipe two; 611-Reservoir tank; 612-Fixed mounting plate two; 613-Fixed bracket; 614-Fixed plate; 615-T-tube; 616-Pressure relief valve; 617-Pressure valve; 618-Return pipe; 619-Fixed mounting plate three; 620-Short pipe one; 621-Three-way valve; 622-Short pipe two; 623-Air source; 624-Long pipe; 625-Pressure sensor; 626-Water guide pipe three; 627-Air valve for discharge; 628-Nozzle. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figure 1-3 The present invention provides a technical solution to achieve this: it includes a machine tool 1, a product fixing seat 2, a tool holder 3, a spindle 4, a machining tool 5, and a cleaning mechanism 6. The product fixing seat 2 and the tool holder 3 are respectively arranged in a left-right structure inside the machine tool 1. The spindle 4 is arranged at the left end of the tool holder 3, the machining tool 5 is arranged at the left end of the spindle 4, and the cleaning mechanism 6 is arranged inside the machine tool 1.

[0021] The cleaning mechanism 6 includes a chamber 61, a collection pipe 62, a cutting fluid tank 63, a cutting fluid pump 64, a water guide pipe 65, a filter inlet 66, a filter 67, a filter outlet 68, a mounting plate 69, a water guide pipe 610, a storage tank 611, a mounting plate 612, a mounting bracket 613, a mounting plate 614, a T-tube 615, a pressure relief valve 616, a pressure boosting valve 617, a return pipe 618, a mounting plate 619, a short pipe 620, a three-way valve 621, a short pipe 622, an air source 623, a long pipe 624, a pressure sensor 625 (model: WNK801), a water guide pipe 626, an air discharge valve 627, and a spray nozzle. The nozzle 628 and the housing 61 are located inside the lower half of the machine tool 1. The collection pipe 62 is located at the top of the middle part of the housing 61 and communicates with the upper half of the machine tool 1. The cutting fluid tank 63 is located at the bottom of the collection pipe 62. The cutting fluid pump 64 is located at the bottom of the right end of the cutting fluid tank 63. The first water guide pipe 65 is located at the right end of the cutting fluid pump 64 and extends upward. The filter inlet 66 is located at the top of the first water guide pipe 65. The filter 67 is located at the right end of the filter inlet 66. The filter outlet 68 is located at the right end of the filter 67. The first fixing plate 69 evenly fixes the filter 67 at the rear end of the housing 61. The second water guide pipe 610 is located at the filter outlet 68. The liquid storage tank 611 is located at the top of the second water guide pipe 610. The second fixing plate 612 evenly fixes the second water guide pipe 610 inside the machine tool 1 at the rear end. The fixing bracket 613 is located at the right end of the liquid storage tank 611. The fixing plate 614 is located at the right end of the fixing bracket 613 and connects to the rear end inside the machine tool 1. The T-tube 615 is located at the top of the liquid storage tank 611. The pressure relief valve 616 and the pressure boosting valve 617 are respectively located at the left and right ends of the T-tube 615. The return pipe 618 is located at the left end of the pressure relief valve 616 and extends downwards to the top of the cutting fluid tank 63. The third fixing plate 619 evenly fixes the return pipe 618 inside the machine tool 1. The rear end of the internal cavity 61 and the rear end of the box cavity 61 are connected to the following structures: short pipe 620 is located at the right end of the pressurizing valve 617; three-way valve 621 is located at the right end of short pipe 620; short pipe 622 is located at the rear end of three-way valve 621; air source 623 is located at the rear end of short pipe 622 and inside the machine tool 1; long pipe 624 is located at the right end of three-way valve 621; pressure sensor 625 is located at the left end of liquid storage tank 611; water guide pipe 626 is located at the right end of liquid storage tank 611 and extends to the right; air valve 627 for discharging is located at the upper left of tool holder 3 and at the top of machining tool 5; and nozzle 628 is located at the bottom of air valve 627 and at the left end of tool holder 3.

[0022] In detail, the filter inlet 66, filter 67 and filter outlet 68 are integrally molded and have an overall T-shaped structure.

[0023] Water pipe 2 610 extends upward through box cavity 61 to the upper half of machine tool 1. Water pipe 2 610 located in the upper half of machine tool 1 extends to the left to the middle and then continues to extend upward. The length of fixed plate 614 in the front-back direction is greater than the diameter of liquid storage tank 611. Liquid storage tank 611 is located in the front half of fixed plate 614.

[0024] The height of the long tube portion of the T-tube 615 is higher than the height of the top of the fixing plate 614.

[0025] The long pipe 624 and the right end of the three-way valve 621 first extend to the right and then extend vertically downward to the left end of the discharge air valve 627. Finally, the long pipe 624 connects vertically to the right with the discharge air valve 627.

[0026] The water guide pipe 626 extends to the right from the right end of the liquid storage tank 611, then extends vertically downward through the fixing frame 613, then extends to the right again, and finally connects downward to the top of the discharge air valve 627.

[0027] Water pipe 1 (65), water pipe 2 (610), return pipe (618), long pipe (624), and water pipe 3 (626) all use flexible hoses.

[0028] Solution Analysis: 1. Sufficient rinsing pressure ensures thorough cleaning. This innovative solution employs a dual-power design of "cutting fluid pump 64 + air pressure booster." Air source 623 is split via a three-way valve 621. One path pressurizes the cutting fluid in the reservoir 611 through short pipe 620 and pressure valve 617, while the other path goes directly to the discharge air valve 627 via long pipe 624. The combined air pressure from the dual-powered system and the delivery force of the cutting fluid pump 64 significantly increases the cutting fluid injection pressure, completely solving the problem of insufficient pressure in conventional cutting fluid pumps. Nozzle 628 precisely targets the machining tool 5 on the spindle 4. The high-pressure cutting fluid powerfully removes iron filings and oil from the tool surface. Compared to some existing equipment lacking dedicated cleaning features or with weak rinsing power, this provides a more thorough cleaning, effectively ensuring machining accuracy and extending the lifespan of the machining tool 5.

[0029] 2. Stable pipeline operation, preventing dry suction and water outages. Water guide pipes 65, 610, and 626 are all made of flexible hoses. Combined with the temporary storage and pressure stabilization function of the storage tank 611, this ensures the fluid path remains full, fundamentally avoiding the defects of existing technologies such as easy dry suction and water interruption. Simultaneously, the cutting fluid pump 64 continuously draws water from the cutting fluid tank 63, sending it through water guide pipe 65 and filter inlet 66 to the filter 67. The filtered cutting fluid is then stably delivered to the storage tank 611 through water guide pipe 610, forming a closed-loop circulation. This ensures continuous and stable water spraying from the nozzle 628, further enhancing the cleaning effect.

[0030] III. Controllable and safe pressure, avoiding potential safety hazards. The T-shaped pipe 615 at the top of the liquid storage tank 611 is connected to the pressure relief valve 616 and the pressure boosting valve 617 respectively. The pressure sensor 625 monitors the pressure in the pipeline and inside the liquid storage tank 611 in real time, thus constructing a complete pressure control system. When the pressure exceeds the limit, the pressure relief valve 616 automatically opens, and the excess pressure and part of the cutting fluid are guided back to the cutting fluid water tank 63 through the return pipe 618. This completely solves the risk of pipe bursts and leaks caused by uncontrollable pressure and the lack of a safe pressure relief mechanism in the existing technology, and improves the safety and stability of the device operation.

[0031] IV. Strong installation adaptability and wide applicability The cleaning mechanism 6 is flexibly fixed inside the machine tool 1 via components such as mounting plate 1 (69), mounting plate 2 (612), mounting plate 3 (619), mounting bracket 613, and mounting plate 614. All pipelines are connected using flexible hoses, and connectors such as the three-way valve 621, short pipe 1 (620), and short pipe 2 (622) are compatible with the air and water pipe interface specifications of mainstream machine tools. Compared to the problems of mismatched connectors and complex installation during machine tool retrofitting in existing technologies, this solution is easy to assemble and can be adapted to different types of CNC machine tools and machining centers, significantly improving its versatility.

[0032] Working principle: When the machine tool 1 is running, the product is placed on the product mounting base 2, and the machining tool 5 is mounted on the tool holder 3 at the lower end of the spindle 4. After the machine tool triggers the tool change signal, the cleaning mechanism 6 is started. The liquid in the cutting fluid tank 63 is sent to the filter 67 through the cutting fluid pump 64 and the first water pipe 65 from the filter inlet 66. The filtered liquid is pumped into the storage tank 611 through the filter outlet 68 and the second water pipe 610. The air source 623 is connected to the three-way valve 621 through the second short pipe 622. Part of it is connected to the pressure valve 617 through the first short pipe 620 and pressurizes the inside of the storage tank 611 (at this time, the pressure relief valve 616 is closed). The cutting fluid in the storage tank 611 is transported to the discharge air valve 627 through the third water pipe 626, and finally sprayed downwards onto the machining tool 5 by the nozzle 628. Meanwhile, another part of the airflow comes through the long pipe 624 to the discharge air valve 627 to further enhance the spraying force; the pressure sensor 625 monitors the pipeline pressure in real time. When the pressure exceeds the standard, the pressure relief valve 616 opens, and the liquid flows back to the cutting fluid tank 63 through the return pipe 618. The liquid with metal slag after rinsing is collected by the collection pipe 62 to the cutting fluid tank 63 to complete the circulation.

[0033] Technical effects of implementing this solution: This solution effectively enhances the cleaning power and efficiency of tool flushing through a synergistic design of "hydraulic circulation + pneumatic boost," while ensuring the stability of pipeline operation. The use of a visualized filtration structure and reusable filters reduces operating costs, while pressure monitoring and depressurization mechanisms ensure operational safety. Furthermore, optimized installation and connector compatibility enhance its versatility. Overall, this solution comprehensively addresses many shortcomings of existing tool flushing devices, precisely meeting the online cleaning needs of CNC machine tools and machining centers during automatic tool changing, providing a reliable guarantee for continuous, stable, and efficient production operations.

[0034] The present invention comprises: 1-machine tool; 2-product mounting base; 3-tool holder; 4-spindle; 5-machining tool; 6-cleaning mechanism; 61-box cavity; 62-collection pipe; 63-cutting fluid tank; 64-cutting fluid pump; 65-water guide pipe one; 66-filter inlet; 67-filter; 68-filter outlet; 69-fixed mounting plate one; 610-water guide pipe two; 611-storage tank; 612-fixed mounting plate two; 613-fixed frame; 614-fixed plate; 615-T-tube; 616-pressure relief valve; 617-pressurization valve; 618-return pipe; 619-fixed mounting plate three; 620-short pipe one; 621-three-way valve; 622-short pipe two; 623-air source; 624-long pipe; 625- The components—pressure sensor, 626-water guide pipe three, 627-air valve for discharge, and 628-nozzle—are all general-purpose standard parts or components known to those skilled in the art. Their structure and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods. The problems solved by this invention are: low cutting fluid pump pressure, insufficient flushing force, difficulty in thoroughly cleaning iron filings and oil stains from tool surfaces, and some equipment even lacking a dedicated cleaning structure; pipelines prone to dry suction and water interruption, leading to unstable water spray and poor cleaning effect; lack of effective control and safe pressure relief mechanisms in the system, easily causing pipe bursts, leaks, and other safety hazards; poor compatibility of air and water pipe joints during machine tool modification, cumbersome installation, and low versatility. This invention, through a collaborative design of "liquid circulation + air pressure boosting," combines high flushing efficiency, pipeline stability, operational safety, and installation versatility, comprehensively solving the defects of existing devices, accurately meeting the online cleaning needs of automatic tool changing in CNC machine tools and machining centers, and ensuring continuous, stable, and efficient production.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0036] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A pneumatic-assisted tool flushing device for CNC machine tools and machining centers, characterized in that: The machine tool includes a machine tool (1), a product holder (2), a tool holder (3), a spindle (4), a machining tool (5), and a cleaning mechanism (6). The product holder (2) and the tool holder (3) are respectively arranged in a left-right structure inside the machine tool (1). The spindle (4) is located at the left end of the tool holder (3), the machining tool (5) is located at the left end of the spindle (4), and the cleaning mechanism (6) is located inside the machine tool (1). The cleaning mechanism (6) includes a chamber (61), a collection pipe (62), a cutting fluid tank (63), a cutting fluid pump (64), a water guide pipe (65), a filter inlet (66), a filter (67), a filter outlet (68), a fixed mounting plate (69), a water guide pipe (610), a storage tank (611), a fixed mounting plate (612), a mounting bracket (613), a mounting plate (614), a T-tube (615), a pressure relief valve (616), a pressure boosting valve (617), a return pipe (618), a fixed mounting plate (619), a short pipe (620), a three-way valve (621), a short pipe (622), an air source (623), a long pipe (624), a pressure sensor (625), and a water guide pipe. The machine tool (1) is equipped with a three-pipe system (626), an air valve (627), and a nozzle (628). The housing (61) is located inside the lower half of the machine tool (1). The collecting pipe (62) is located at the top of the middle part of the housing (61) and communicates with the upper half of the machine tool (1). The cutting fluid tank (63) is located at the bottom of the collecting pipe (62). The cutting fluid pump (64) is located at the bottom of the right end of the cutting fluid tank (63). The first water guide pipe (65) is located at the right end of the cutting fluid pump (64) and extends upward. The filter inlet (66) is located at the top of the first water guide pipe (65). The filter (67) is located at the right end of the filter inlet (66). The filter outlet (68) is located at the right end of the filter (67). The first fixing plate (69) evenly fixes the filter (67) at the rear end of the chamber (61). The second water guide pipe (610) is located at the top of the filter outlet (68) and extends upward. The liquid storage tank (611) is located at the top of the second water guide pipe (610). The second fixing plate (612) evenly fixes the second water guide pipe (610) at the rear end of the machine tool (1). The fixing frame (613) is located at the right end of the liquid storage tank (611). The fixing plate (614) is located at the right end of the fixing frame (613) and connected to the rear end of the machine tool (1). The T-shaped pipe ( 615) is located at the top of the liquid storage tank (611). The pressure relief valve (616) and the pressure boosting valve (617) are respectively located at the left and right ends of the T-tube (615). The return pipe (618) is located at the left end of the pressure relief valve (616) and extends downward to the top of the cutting fluid tank (63). The fixing mounting plate three (619) evenly fixes the return pipe (618) to the rear end of the machine tool (1) and the rear end of the box cavity (61). The first short pipe (620) is located at the right end of the pressure boosting valve (617). The three-way valve (621) is located at the right end of the first short pipe (620). The second short pipe (622) is located at the rear end of the three-way valve (621).The air source (623) is located at the rear end of the second short pipe (622) and inside the machine tool (1). The long pipe (624) is located at the right end of the three-way valve (621). The pressure sensor (625) is located at the left end of the liquid storage tank (611). The third water guide pipe (626) is located at the right end of the liquid storage tank (611) and extends to the right. The discharge air valve (627) is located at the upper left of the tool holder (3) and at the top of the machining tool (5). The nozzle (628) is located at the bottom of the air valve (627) and at the left end of the tool holder (3).

2. The pneumatic-assisted tool flushing device for CNC machine tools and machining centers according to claim 1, characterized in that: The filter inlet (66), filter (67) and filter outlet (68) are integrally formed and have an overall T-shaped structure.

3. The pneumatic-assisted tool flushing device for CNC machine tools and machining centers according to claim 2, characterized in that: The second water guide pipe (610) passes through the box cavity (61) and extends upward to the upper half of the machine tool (1). The second water guide pipe (610) located in the upper half of the machine tool (1) extends to the left to the middle and then continues to extend upward. The length of the fixing plate (614) in the front-back direction is greater than the diameter of the liquid storage tank (611). The liquid storage tank (611) is located in the front half of the fixing plate (614).

4. The pneumatic-assisted tool flushing device for CNC machine tools and machining centers according to claim 3, characterized in that: The height of the long tube portion of the T-tube (615) is higher than the height of the top of the fixing plate (614).

5. A pneumatic-assisted tool flushing device for CNC machine tools and machining centers according to claim 4, characterized in that: The long tube (624) and the right end of the three-way valve (621) first extend to the right and then extend vertically downward to the left end of the discharge air valve (627). Finally, the long tube (624) connects vertically to the right to the discharge air valve (627).

6. The pneumatic-assisted tool flushing device for CNC machine tools and machining centers according to claim 5, characterized in that: The water guide pipe (626) extends to the right from the right end of the liquid storage tank (611), then extends vertically downward through the fixing frame (613), then extends to the right and finally connects downward to the top of the discharge air valve (627).

7. A pneumatic-assisted tool flushing device for CNC machine tools and machining centers according to claim 6, characterized in that: The first water pipe (65), the second water pipe (610), the return pipe (618), the long pipe (624), and the third water pipe (626) are all made of flexible hose.

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