Efficient cutting fluid circulating system of numerical control machining center

By introducing an ultrasonic cleaner and a closed system into the cutting fluid circulation system of a CNC machining center, the problem of filter clogging was solved, automatic cleaning of the filter was achieved, and the operating efficiency and reliability of the system were improved.

CN223933212UActive Publication Date: 2026-02-24DAHAO INTELLIGENT TECH (TAICANG) CO LTD
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Patent Information

Application Number
CN202520486698.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-19
Publication Date
2026-02-24
Estimated Expiration
2035-03-19

AI Technical Summary

Technical Problem

The filter screens in the existing CNC machine tool cutting fluid filtration system are prone to clogging, resulting in a decline in filtration quality and requiring inconvenient manual cleaning.

Method used

An ultrasonic cleaner is used to clean the filter screen. Combined with a closed component design, the filter screen is automatically cleaned, avoiding debris blockage.

Benefits of technology

It enables automatic cleaning of the filter screen, avoiding manual disassembly and improving the efficiency and reliability of the filtration system.

✦ Generated by Eureka AI based on patent content.

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    Figure CN223933212U_ABST
Patent Text Reader

Abstract

The utility model relates to the field of numerical control machining, and discloses an efficient cutting fluid circulating system of a numerical control machining center, which comprises a shell, a collecting cavity, a filter screen, a fluid inlet, a fluid outlet, an ultrasonic cleaning instrument and a sealing assembly, the liquid inlet is formed in the top of the shell; the collecting cavity is arranged at the lower part in the shell, and the liquid outlet is formed in the side surface of the collecting cavity; the filter screen is arranged above the collecting cavity, and the filter screen is mounted in the shell; the ultrasonic cleaning instrument is mounted in the shell and located above the filter screen; and the sealing assembly is arranged between the filter screen and the collecting cavity. The first partition plate is sealed, the filter screen is cleaned through the ultrasonic cleaning instrument when the filter screen is not detached, the filter screen is prevented from being blocked by impurities such as cutting chippings, and use is convenient.
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Description

Technical Field

[0001] This utility model relates to the field of CNC machining, and in particular to a high-efficiency cutting fluid circulation system for CNC machining centers. Background Technology

[0002] Cutting fluid is a special liquid medium primarily used in CNC machining to reduce cutting temperature, decrease tool wear, and improve machining accuracy and surface quality. By forming a lubricating film between the tool and workpiece, cutting fluid effectively reduces the coefficient of friction and cutting forces, thereby extending tool life. Simultaneously, it effectively removes heat and chips generated during cutting, preventing chip accumulation on the tool or workpiece surface and avoiding impacts on machining accuracy and surface roughness. Furthermore, cutting fluid has anti-rust properties, protecting machine tools and workpieces from corrosion and maintaining machine tool accuracy and lifespan.

[0003] Patent publication number CN217167723U discloses a cutting fluid filtration and circulation system for CNC machine tools, including a device body. A caster wheel is fixedly installed at the lower end of the device body. A first filter tank is located on the upper left side of the device body, a first filter screen is installed on the right side of the first filter tank, and a second filter tank is located on the right side of the first filter tank, with a second filter screen on the right side of the second filter tank. A unwinding shaft is installed on the right side of the device body, and filter paper tape is disposed outside the unwinding shaft. In this CNC machine tool cutting fluid filtration and circulation system, the flow of cutting fluid drives an impeller to rotate, which in turn drives a first gear to rotate. Simultaneously, the first gear, a second gear, and a connecting rod work together to drive a third gear on the left side and a fourth gear connected to its rear end to rotate synchronously. Because a fifth gear connected to the rear end of a take-up roller meshes with the fourth gear, the take-up roller rotates and rewinds the used filter paper tape.

[0004] However, the filter screen in the aforementioned patent will retain debris from the cutting fluid after prolonged use. Excessive accumulation of debris will cause the filter screen to become clogged, resulting in a decrease in filtration quality. The filter screen needs to be manually disassembled and cleaned, which is inconvenient to use. Utility Model Content

[0005] The present invention aims to solve the technical problems mentioned in the background section by providing a high-efficiency cutting fluid circulation system for CNC machining centers.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] A high-efficiency cutting fluid circulation system for a CNC machining center includes a housing, a collection chamber, a filter screen, a fluid inlet, a fluid outlet, an ultrasonic cleaner, and a sealing assembly.

[0008] The liquid inlet is located on the top of the outer casing;

[0009] The collection chamber is located inside the lower part of the outer shell, and the liquid outlet is located on the side of the collection chamber;

[0010] The filter screen is disposed above the collection chamber and is installed inside the outer casing;

[0011] The ultrasonic cleaner is installed inside the housing and is located above the filter screen.

[0012] The sealing component is disposed between the filter and the collection chamber.

[0013] Preferably, the outer shell has an inlet and an outlet on each side, and both the inlet and outlet are located above the collection chamber.

[0014] Preferably, the enclosure assembly includes a partition plate, a through hole, a sealing plug, a geared motor, a screw, a nut, a protrusion, a limiting rod, a limiting rod, and a connecting frame;

[0015] The first partition is fixedly connected inside the outer shell, and the first partition is located below the filter screen;

[0016] The through holes are formed at the top of the partition plate, and the through holes are arranged in a ring.

[0017] The sealing plug is disposed below the through hole, and the connecting bracket is fixedly connected to the sealing plug;

[0018] The geared motor is located below the partition, and the screw is fixedly connected to the output shaft of the geared motor.

[0019] The nut is threadedly connected to the screw, and the nut is fixedly connected to the connecting frame;

[0020] The protrusion is fixedly connected to the outside of the nut;

[0021] Both the first limiting rod and the second limiting rod are fixedly connected to the bottom of the first partition. The bottom of the first limiting rod is higher than the top of the protrusion, and the length of the second limiting rod is greater than that of the first limiting rod.

[0022] Preferably, the collection chamber includes a vertical pipe and a partition.

[0023] The second partition is fixedly connected inside the outer casing, and the second partition is fixedly connected to the bottom of the geared motor;

[0024] The vertical tube is installed on the top of the second partition, and the position of the vertical tube corresponds to the position of the through hole. The top of the vertical tube is funnel-shaped.

[0025] The beneficial effects of this utility model are:

[0026] This invention seals the filter screen with a partition and cleans it with an ultrasonic cleaner without removing the filter screen, thus preventing debris and other impurities from clogging the filter screen and making it easier to use. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the high-efficiency cutting fluid circulation system of this CNC machining center;

[0028] Figure 2 This is a schematic diagram of the internal structure of the high-efficiency cutting fluid circulation system of this CNC machining center;

[0029] Figure 3 This is a schematic diagram of the collection chamber structure of the high-efficiency cutting fluid circulation system of this CNC machining center;

[0030] Figure 4 This is a schematic diagram of the closed-loop component structure of the high-efficiency cutting fluid circulation system of this CNC machining center.

[0031] Explanation of reference numerals in the attached drawings: 1. Outer shell; 2. Liquid inlet; 3. Liquid outlet; 4. Water inlet; 5. Water outlet; 6. Ultrasonic cleaner; 7. Filter screen; 8. Partition 1; 9. Through hole; 10. Vertical pipe; 11. Partition 2; 12. Sealing plug; 13. Gear motor; 14. Screw; 15. Nut; 16. Protrusion; 17. Limiting rod 1; 18. Limiting rod 2; 19. Connecting frame. Detailed Implementation

[0032] The following will describe the concept and technical effects of this utility model clearly and completely with reference to the embodiments, so as to fully understand the purpose, features and effects of this utility model.

[0033] This application designs a high-efficiency cutting fluid circulation system for a CNC machining center, as shown in the attached figure. Figure 1 As shown, it includes a housing 1, a collection chamber, a filter screen 7, a liquid inlet 2, a liquid outlet 3, an ultrasonic cleaner 6, and a sealing assembly;

[0034] The liquid inlet 2 is located on the top of the outer casing 1 and is connected to the collection tank of the machine tool for collecting cutting fluid.

[0035] The collection chamber is located inside the lower part of the outer shell 1, and the liquid outlet 3 is opened on the side of the collection chamber. The liquid outlet 3 is connected to the container for recovering cutting fluid through a pipe, and a diversion pump is installed on the pipe.

[0036] The filter screen 7 is positioned above the collection chamber and is installed inside the outer casing 1;

[0037] The ultrasonic cleaner 6 is installed inside the housing 1 and is located above the filter screen 7. The ultrasonic cleaner 6 is the existing Emerson 2000Xc ultrasonic system, which mainly includes an ultrasonic generator and a transducer. It converts electrical signals into mechanical vibrations and cleans the filter screen 7 by driving the water to oscillate at high frequency.

[0038] The sealing component is located between the filter 7 and the collection chamber.

[0039] As attached Figure 2-3 As shown, the outer casing 1 has an inlet 4 and an outlet 5 on its two sides respectively. The inlet 4 and the outlet 5 are both located above the collection chamber and are connected to the water supply and drainage pipes respectively.

[0040] The collection chamber includes a vertical pipe 10 and a partition 2 11;

[0041] Partition 2 11 is fixedly connected inside the outer casing 1, and partition 2 11 is fixedly connected to the bottom of the geared motor 13;

[0042] The vertical tube 10 is installed on the top of the partition plate 2 11. The vertical tube 10 corresponds to the position of the through hole 9. The top of the vertical tube 10 is funnel-shaped.

[0043] As attached Figure 4 As shown, the enclosure assembly includes a partition 1 8, a through hole 9, a sealing plug 12, a geared motor 13, a screw 14, a nut 15, a protrusion 16, a limiting rod 17, a limiting rod 2 18, and a connecting frame 19.

[0044] Partition 8 is fixedly connected inside the outer casing 1, and partition 8 is located below filter screen 7;

[0045] Through holes 9 are opened at the top of partition 8, and the through holes 9 are arranged in a ring;

[0046] The sealing plug 12 is located below the through hole 9, and the connecting bracket 19 is fixedly connected to the sealing plug 12;

[0047] The geared motor 13 is located below the partition 8, and the screw 14 is fixedly connected to the output shaft of the geared motor 13.

[0048] Nut 15 is threadedly connected to screw 14, and nut 15 is fixedly connected to connecting bracket 19;

[0049] The protrusion 16 is fixedly connected to the outside of the nut 15;

[0050] Limiting rod 17 and limiting rod 2 18 are both fixedly connected to the bottom of partition 1 8. The bottom of limiting rod 17 is higher than the top of protrusion 16, and the length of limiting rod 2 18 is greater than that of limiting rod 17.

[0051] Working principle: After cutting, the debris generated by the CNC machine tool is mixed with the cutting fluid and introduced into the housing 1 through the inlet 2. The debris and other impurities are filtered out by the filter screen 7. The filtered cutting fluid then flows into the vertical pipe 10 and is introduced into the collection chamber. The guide pump then discharges the cutting fluid, completing the cutting fluid filtration cycle. After a period of operation, the reduction motor 13 drives the screw 14 to rotate. The screw 14 drives the nut 15, the protrusion 16, the connecting bracket 19, and the sealing plug 12 to rotate until the protrusion 16 is attached to the limit rod 18. At this point, the sealing plug 12 coincides with the through hole 9. Then, the limit rod 16... Under the action of the second positioning rod 18, the protrusion 16 and nut 15 are prevented from rotating, causing the protrusion 16 and nut 15 to move upward. The nut 15 drives the connecting bracket 19 and sealing plug 12 to move upward until the sealing plug 12 is inserted into the through hole 9 to seal the through hole 9, preventing water from flowing to the bottom of the partition 8. Then, water is injected into the housing 1 through the water inlet 4. Then, the ultrasonic cleaner 6 is started. The ultrasonic cleaner 6 drives the water to vibrate at high frequency, peeling off the debris on the filter screen 7. After cleaning, the water mixed with debris is discharged through the water outlet 5. Then, the sealing plug 12 is reset. Thus, the filter screen 7 can be cleaned without disassembling it, which is convenient for use.

[0052] The above embodiments are only some embodiments of this utility model, not all embodiments. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the protection scope of this utility model.

Claims

1. A high-efficiency cutting fluid circulation system for a CNC machining center, characterized in that: Includes a housing (1), a collection chamber, a filter screen (7), a liquid inlet (2), a liquid outlet (3), an ultrasonic cleaner (6), and a sealing assembly; The liquid inlet (2) is located on the top of the outer casing (1); The collection chamber is located inside the lower part of the outer shell (1), and the liquid outlet (3) is opened on the side of the collection chamber; The filter screen (7) is disposed above the collection chamber and is installed inside the outer casing (1); The ultrasonic cleaner (6) is installed inside the housing (1) and is located above the filter screen (7); The sealing component is disposed between the filter (7) and the collection chamber.

2. The high-efficiency cutting fluid circulation system for a CNC machining center according to claim 1, characterized in that: The outer shell (1) has an inlet (4) and an outlet (5) on its two sides, and the inlet (4) and outlet (5) are located above the collection chamber.

3. The high-efficiency cutting fluid circulation system for a CNC machining center according to claim 2, characterized in that: The enclosure assembly includes a partition (8), a through hole (9), a sealing plug (12), a geared motor (13), a screw (14), a nut (15), a protrusion (16), a limiting rod (17), a limiting rod (2) (18), and a connecting frame (19); The first partition (8) is fixedly connected inside the outer shell (1), and the first partition (8) is located below the filter screen (7); The through holes (9) are formed on the top of the partition plate (8), and the through holes (9) are arranged in a ring. The sealing plug (12) is disposed below the through hole (9), and the connecting bracket (19) is fixedly connected to the sealing plug (12); The geared motor (13) is located below the partition (8), and the screw (14) is fixedly connected to the output shaft of the geared motor (13); The nut (15) is threadedly connected to the screw (14), and the nut (15) is fixedly connected to the connecting bracket (19); The protrusion (16) is fixedly connected to the outside of the nut (15); The first limiting rod (17) and the second limiting rod (18) are both fixedly connected to the bottom of the first partition (8). The bottom of the first limiting rod (17) is higher than the top of the protrusion (16), and the length of the second limiting rod (18) is greater than that of the first limiting rod (17).

4. The high-efficiency cutting fluid circulation system for a CNC machining center according to claim 3, characterized in that: The collection chamber includes a vertical pipe (10) and a second partition (11); The second partition (11) is fixedly connected inside the outer shell (1), and the second partition (11) is fixedly connected to the bottom of the geared motor (13); The vertical tube (10) is installed on the top of the partition plate (11), and the vertical tube (10) is positioned corresponding to the through hole (9). The top of the vertical tube (10) is funnel-shaped.

Citation Information

Patent Citations

  • Cutting fluid filtering and circulating system of numerical control machining tool

    CN217167723U