Numerical control lubricating oil spraying device capable of automatically controlling flow

Abstract

The numerical control lubricating oil spraying device capable of automatically controlling the flow comprises a numerical control grinding machine and an intelligent control system, the numerical control grinding machine comprises a working table, a working plate is slidably connected to the middle of the working table, and a clamping mechanism is fixedly installed above the working plate; an electric screw mechanism is fixedly installed below the rear side of the workbench, a speed detection module is arranged in the electric screw mechanism and used for detecting the front-back moving speed of the working plate, the electric screw mechanism is fixedly connected with the working plate, and spraying cavities are fixedly installed on the left side and the right side of the workbench correspondingly. A flow control mechanism is arranged in the spraying cavity, a mechanical arm is fixedly installed above the spraying cavity, a spraying pipe is fixedly installed at the front end of the mechanical arm, the spraying pipe is connected with the flow control mechanism through a pipeline, and the device solves the problem that intelligent lubricating oil spraying work cannot be conducted at present.

Description

Technical Field

[0001] The invention belongs to the technical field of lubricating oil spraying, and in particular relates to a numerically controlled lubricating oil spraying device capable of automatically controlling flow rate. Background Art

[0002] With the continuous advancement of lubricant spraying technology, more and more CNC grinding machines use lubricant spraying devices for lubricant spraying. The functions of lubricants and lubricants on CNC machine tools include: lubrication function, reducing friction resistance, reducing wear, and extending mechanical life; cooling function, which can dissipate the heat generated by friction; rust prevention function, which can prevent surface corrosion of equipment parts; sealing function, which can prevent leakage, dust, and gas leakage, etc.

[0003] The existing lubricating oil spraying device cannot perform intelligent spraying according to the running speed of the grinder during grinding when spraying lubricating oil. The workpiece needs to move back and forth during processing to achieve better grinding effect. In order to ensure the processing speed during rough grinding, the workpiece moves back and forth quickly. In order to ensure the processing quality during fine grinding, the workpiece moves slowly to ensure the working accuracy. When the workpiece moves back and forth, the worktable of the grinder needs to be fully lubricated to improve the grinding quality. During the lubrication process, the lubricating oil easily causes oil stains inside the oil pipe, and the oil stains cannot be cleaned in time, resulting in oil pipe blockage. This phenomenon has become a problem that needs to be solved urgently by people in this field. Summary of the invention

[0004] The purpose of the present invention is to provide a numerically controlled lubricating oil spraying device capable of automatically controlling the flow rate of the existing skidding device, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a CNC lubricating oil spraying device that can automatically control flow, including a CNC grinder and an intelligent control system, characterized in that: the CNC grinder includes a workbench, a work plate is slidably connected in the middle of the workbench, a clamping mechanism is fixedly installed above the work plate, an electric screw mechanism is fixedly installed at the lower rear side of the workbench, a speed detection module is arranged in the electric screw mechanism, and the speed detection module is used to detect the speed of the working plate moving forward and backward, the electric screw mechanism is fixedly connected to the work plate, spray chambers are fixedly installed on both sides of the workbench, a flow control mechanism is arranged inside the spray chamber, a manipulator is fixedly installed above the spray chamber, a nozzle is fixedly installed at the front end of the manipulator, and the nozzle is connected to the flow control mechanism pipeline.

[0006] The present invention further illustrates that the flow control mechanism includes a hydraulic pump, the hydraulic pump is fixedly connected to the inner wall of the spray chamber, a throttle valve is connected to the left pipeline of the hydraulic pump, the throttle valve is provided with an oil inlet and an oil outlet, the oil outlet pipeline of the throttle valve is connected to an oil pump, the oil pump is connected to the nozzle pipeline, a fixing ring is fixedly installed on the inner wall of the throttle valve, an oil inlet pipe is fixedly installed in the middle of the front end of the fixing ring, a valve block is slidably connected in the middle of the oil inlet pipe, the valve block is divided into a convex valve block and a concave valve block, a telescopic rod is fixedly connected to the outer side of the valve block, and the telescopic rod is fixed to the fixing ring The telescopic rod is connected with the external air pump pipeline, a slide is fixedly installed on the inner end of the telescopic rod, an air pressure chamber is fixedly installed on the inner wall of the fixed ring, the slide is slidably connected to the inner wall of the air pressure chamber, a tensioner is fixedly installed on the left side of the inner wall of the throttle valve, a pull rope is fixedly connected to the left side of the tensioner, a whistle is fixedly installed on the inner end of the pull rope, a telescopic baffle is fixedly installed on the outer side of the inner wall of the whistle, the telescopic baffle is connected with the air pressure chamber pipeline and a pressure valve is arranged in the pipeline, a plurality of bristles are arranged on the inner side of the telescopic baffle and the bristles are elastic, and a plurality of the bristles are fixedly connected to the inner wall of the whistle.

[0007] The present invention further illustrates that the intelligent control system includes a data acquisition module, an intelligent conversion module, and an intelligent control module. The data acquisition module is electrically connected to the speed detection module, the intelligent conversion module is electrically connected to the data acquisition module and the intelligent control module respectively, and the intelligent control module is connected to an external air pump and a tensioner respectively;

[0008] The data acquisition module is used to collect the moving speed data of the working plate in the speed detection module, the intelligent conversion module is used to convert according to the moving speed of the working plate and input the result into the intelligent control module, and the intelligent control module is used to control the operation of the external air pump and the tensioner.

[0009] The present invention further illustrates that the operation process of the intelligent control system includes:

[0010] S1, intelligent control system operation;

[0011] S2, the electric screw mechanism drives the working plate to move forward and backward through electric drive, so that the workpiece moves forward and backward, and the CNC grinder starts grinding;

[0012] S3, the speed detection module is controlled by the electric drive to run, the speed detection module detects the moving speed of the working plate, the data acquisition module collects the moving speed data of the working plate and inputs it into the intelligent conversion module, and the intelligent conversion module converts the result and inputs it into the intelligent control module;

[0013] S4, the intelligent control module drives the external air pump to operate, injects gas into the telescopic rod, controls the flow rate, and controls the time from opening to closing of the valve block to achieve flow control. When the moving speed of the working plate is slow, it enters S5, otherwise it enters S6;

[0014] S5, the pressure valve opens after reaching the bearing pressure, so that the telescopic baffle opens, the bristles pop out and contact the inner wall of the throttle valve, and the intelligent control module drives the tensioner to tighten the pull rope, and then enters S6;

[0015] S6. After the grinding work is completed, the intelligent control system stops running. If the grinding work needs to be continued, S1 to S5 are repeated.

[0016] The present invention further illustrates that in S4, the intelligent control module controls the operation of the external air pump, and the external air pump injects gas into the telescopic rod to extend the telescopic rod, and the telescopic rod drives the convex valve block and the concave valve block to approach each other, thereby controlling the flow rate of the lubricating oil.

[0017] The present invention further illustrates that in S4, the intelligent control module drives the external air pump to inject gas into the telescopic rod to extend the telescopic rod to its longest length, so that the telescopic rod drives the convex valve block and the concave valve block to fit together, thereby blocking the lubricating oil and stopping the lubricating oil discharge work, and controlling the frequency of opening and closing of the valve block according to the moving speed of the working plate to achieve multiple lubrication.

[0018] The present invention further illustrates that in S5, the intelligent control module drives the external air pump to extend the telescopic rod, thereby driving the slide plate to move inward, thereby reducing the internal pressure of the air pressure chamber.

[0019] The present invention further illustrates that in S5, the intelligent control module drives the tensioner to operate, the tensioner pulls the pull rope to cause deformation, the pull rope is elastic, and after the pull rope is subjected to force, friction is generated between the pull rope and the small hole of the whistle. The two forces are combined to make the whistle rotate in the center of the pull rope, thereby driving the bristles to rotate, and the tensioner is controlled according to the moving speed of the working plate to change the frequency of the whistle rotation.

[0020] Compared with the prior art, the beneficial effects achieved by the present invention are: the present invention adopts an intelligent control system and a flow control mechanism, and realizes intelligent discharge of lubricating oil through the flow control mechanism, so that the lubricating oil has a better lubricating effect on the grinding machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the structure of the manipulator of the present invention;

[0024] Figure 3 It is a schematic diagram of the internal structure of the spray chamber of the present invention;

[0025] Figure 4 It is a schematic diagram of the throttle valve structure of the present invention;

[0026] Figure 5 It is a schematic diagram of the internal structure of the throttle valve of the present invention;

[0027] Figure 6 It is a schematic plan view of the internal structure of the throttle valve of the present invention;

[0028] Figure 7 It is a schematic diagram of the intelligent control system flow of the present invention;

[0029] In the figure: 1. workbench; 2. work plate; 3. spray chamber; 4. manipulator; 5. nozzle; 6. hydraulic pump; 7. throttle valve; 8. oil pump; 9. fixing ring; 10. oil inlet pipe; 11. valve block; 12. telescopic rod; 13. slide plate; 14. air pressure chamber; 15. tensioner; 16. whistle; 17. telescopic baffle; 18. pull rope; 19. pressure valve. DETAILED DESCRIPTION

[0030] The following is a further non-limiting detailed description of the technical solution of the present invention in conjunction with the preferred embodiments and the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-7The present invention provides a technical solution: a CNC lubricating oil spraying device capable of automatically controlling flow rate, comprising a CNC grinder and an intelligent control system, the CNC grinder comprising a workbench 1, a work plate 2 being slidably connected in the middle of the workbench 1, a clamping mechanism being fixedly installed above the work plate 2, an electric screw mechanism being fixedly installed at the lower rear side of the workbench 1, a speed detection module being arranged in the electric screw mechanism, the speed detection module being used to detect the speed of the work plate 2 moving forward and backward, the electric screw mechanism being fixedly connected to the work plate 2, spray chambers 3 being fixedly installed on both left and right sides of the workbench 1, a flow control mechanism being arranged inside the spray chamber 3, a manipulator 4 being fixedly installed above the spray chamber 3, a nozzle 5 being fixedly installed at the front end of the manipulator 4, the nozzle 5 being connected to a pipeline of the flow control mechanism, the intelligent control system being electrically connected to the CNC grinder, the speed detection module, the electric screw mechanism, the manipulator 4, and the flow control mechanism respectively, and the operator adding The workpiece is placed on the working plate 2, and the workpiece is fixed by the clamping mechanism. At this time, the CNC grinder is turned on, and the intelligent control system is operated by the electric drive, and then the flow control mechanism is controlled by the electric drive to control the flow of the lubricating oil. The lubricating oil enters the pipeline through the flow control mechanism, and then enters the nozzle 5 through the pipeline, and is finally discharged from the nozzle 5. At the same time, the electric drive controls the electric screw mechanism to move the working plate 2 back and forth, and the grinding work starts. The intelligent control system uses the electric drive to enable the speed detection module to detect the speed of the working plate 2 moving back and forth. The moving speed is faster during rough grinding and slower during fine grinding to ensure the grinding quality. During the grinding process, the manipulator 4 is driven to operate, and the manipulator 4 drives the nozzle 5 to spray the lubricating oil on the sliding part between the working plate 2 and the workbench 1. The lubricating oil is intelligently discharged through the flow control mechanism, so that the lubricating oil has a better lubrication effect on the grinder.

[0032] The flow control mechanism includes a hydraulic pump 6, which is fixedly connected to the inner wall of the spray chamber 3. A throttle valve 7 is connected to the left pipeline of the hydraulic pump 6. The throttle valve 7 is provided with an oil inlet and an oil outlet. The oil outlet pipeline of the throttle valve 7 is connected to an oil pump 8. The oil pump 8 is connected to the nozzle 5 pipeline. A fixing ring 9 is fixedly installed on the inner wall of the throttle valve 7. An oil inlet pipe 10 is fixedly installed in the middle of the front end of the fixing ring 9. A valve block 11 is slidably connected in the middle of the oil inlet pipe 10. The valve block 11 is divided into a convex valve block and a concave valve block. A telescopic rod 12 is fixedly connected to the outer side of the valve block 11. The telescopic rod 12 is fixedly connected to the fixing ring 9. The telescopic rod 12 is connected to the external air pump pipeline. A slide plate 13 is fixedly installed on the inner end of the telescopic rod 12. An air pressure chamber 14 is fixedly installed on the inner wall of the fixing ring 9. The slide plate 13 is connected to the air pressure chamber 14. The throttle valve 7 is connected to the wall by sliding, a tensioner 15 is fixedly installed on the left side of the inner wall of the throttle valve 7, a pull rope 18 is fixedly connected to the left side of the tensioner 15, a whistle 16 is fixedly installed on the inner end of the pull rope 18, and a telescopic baffle 17 is fixedly installed on the outer side of the inner wall of the whistle 16, the telescopic baffle 17 is connected to the air pressure chamber 14 pipeline and a pressure valve 19 is arranged in the pipeline, a number of bristles are arranged on the inner side of the telescopic baffle 17 and the bristles are elastic, and a number of bristles are fixedly connected to the inner wall of the whistle 16, the intelligent control system is electrically connected to the hydraulic pump 6, the oil pump 8, the external air pump, and the tensioner 15 respectively, through the above steps, the intelligent control system is operated, and the hydraulic pump 6 is controlled by electric drive to operate, the hydraulic pump 6 draws lubricating oil from the outside and inputs it into the throttle valve 7 through the pipeline, and then discharges it from the oil inlet pipe 10 to the oil outlet. The external air pump is controlled by an electric drive to operate, and the external air pump injects gas into the telescopic rod 12 to extend the telescopic rod 12. The telescopic rod 12 drives the convex valve block and the concave valve block to approach each other to control the flow rate of the lubricating oil. After the lubricating oil is discharged, the telescopic rod 12 is driven to extend to its longest position, and the convex valve block and the concave valve block fit together to block the lubricating oil, and the lubricating oil discharge work is stopped. When the telescopic rod 12 is extended, it drives the slide plate 13 to move inward to reduce the internal pressure of the air pressure chamber 14. When the telescopic rod 12 is extended to its longest position, the pressure valve 19 reaches the pressure limit and opens. At this time, the gas in the telescopic baffle 17 is extracted and enters the air pressure chamber 14 through the pipeline. After the gas is extracted, the telescopic baffle 17 begins to shrink until the telescopic baffle 17 opens, and the bristles lose the telescopic baffle 17. After being blocked, the brush bristles in the whistle 16 are blocked when the telescopic baffle 17 is closed, and after the telescopic baffle 17 is opened, it loses the blockage and pops out to contact the inner wall of the throttle valve 7. The drawstring 18 is in a mutually entangled state, and the drawstring 18 is deformed by pulling the tensioner 15. The drawstring 18 is elastic. After the drawstring 18 is stressed, friction is generated between the small hole of the whistle 16. The two forces are combined to make the whistle 16 rotate in the center of the drawstring 18, thereby driving the brush bristles to rotate. The tensioner 15 is controlled according to the moving speed of the working plate 2 to change the frequency of the rotation of the whistle 16. The inner wall of the throttle valve 7 is grease-stained after long-term operation, thereby cleaning the inner wall of the throttle valve 7, and then the oil pump 8 is controlled to run by electric drive. The lubricating oil at the oil outlet is extracted by the oil pump 8 and enters the nozzle 5 through the pipeline.Then it is discharged from the nozzle 5 to realize the lubricating oil spraying work;

[0033] The intelligent control system includes a data acquisition module, an intelligent conversion module, and an intelligent control module. The data acquisition module is electrically connected to the speed detection module, the intelligent conversion module is electrically connected to the data acquisition module and the intelligent control module, and the intelligent control module is connected to the external air pump and the tensioner 15 respectively.

[0034] The data acquisition module is used to collect the moving speed data of the working plate 2 in the speed detection module, and the intelligent conversion module is used to convert according to the moving speed of the working plate 2 and input the result into the intelligent control module, and the intelligent control module is used to control the operation of the external air pump and the tensioner 15;

[0035] The operation process of the intelligent control system includes:

[0036] S1, intelligent control system operation;

[0037] S2, the electric screw mechanism drives the working plate 2 to move forward and backward through electric drive, so that the workpiece moves forward and backward, and the CNC grinder starts grinding.

[0038] S3, the speed detection module is operated by the electric drive control, the speed detection module detects the moving speed of the working plate 2, the data acquisition module collects the moving speed data of the working plate 2 and inputs it into the intelligent conversion module, and the intelligent conversion module converts the result and inputs it into the intelligent control module;

[0039] S4, the intelligent control module drives the external air pump to operate, injects gas into the telescopic rod 12, controls the flow rate, and controls the time from opening to closing of the valve block 11 to achieve flow control. When the moving speed of the working plate 2 is slow, enter S5, otherwise enter S6;

[0040] S5, the pressure valve 19 opens after reaching the pressure, so that the telescopic baffle 17 opens, so that the bristles pop out and contact the inner wall of the throttle valve 7, and the intelligent control module drives the tensioner 15 to tighten the pull rope 18, and then enters S6;

[0041] S6, after the grinding work is completed, the intelligent control system stops running. If the grinding work needs to be continued, S1 to S5 are repeated;

[0042] In S4, the intelligent control module controls the operation of the external air pump, and the external air pump injects gas into the telescopic rod 12 to extend the telescopic rod 12. The telescopic rod 12 drives the convex valve block and the concave valve block to approach each other, and controls the flow rate of the lubricating oil:

[0043]

[0044] Where V is the lubricating oil flow rate after the convex valve block and the concave valve block are close to each other, Vmax A is the lubricating oil flow rate when the convex valve block and the concave valve block are farthest apart. max is the maximum moving speed of the working plate 2, A is the moving speed of the working plate 2, the slower the moving speed of the working plate 2, the slower the flow rate of the lubricating oil, to prevent the phenomenon of excessive local spraying of the lubricating oil, improve the lubrication effect, and avoid excessive spraying of the lubricating oil to cause waste of resources, save costs, the faster the moving speed of the working plate 2, the faster the flow rate of the lubricating oil, at this time, in order to ensure that the lubricating oil smoothly enters the gap between the working plate 2 and the workbench 1, thereby accelerating the flow rate of the lubricating oil, so that the lubricating oil is quickly discharged;

[0045] In S4, the intelligent control module drives the external air pump to inject gas into the telescopic rod 12 to extend the telescopic rod 12 to its longest length, so that the telescopic rod 12 drives the convex valve block and the concave valve block to fit together, blocking the lubricating oil, stopping the lubricating oil discharge work, and controlling the frequency of opening and closing of the valve block 11 according to the moving speed of the working plate 2 to achieve multiple lubrication:

[0046]

[0047] Where F is the frequency of opening and closing of valve block 11, T max is the maximum frequency of the valve block 11 opening and closing. The faster the working plate 2 moves, the higher the frequency of the valve block 11 opening and closing. At this time, in order to ensure that the lubricating oil can be replenished in time at the gap between the working plate 2 and the workbench 1, the lubricating oil is discharged multiple times to improve the lubrication effect during rapid processing and avoid the wear between the workbench 1 and the working plate 2 caused by the inability to replenish the lubricating oil after consumption. The slower the moving speed of the working plate 2, the lower the frequency of the valve block 11 opening and closing. At this time, the friction between the workbench 1 and the working plate 2 is small, and the lubricating oil is sufficient to lubricate them, which can further reduce the waste of lubricating oil.

[0048] In S5, the intelligent control module drives the external air pump to extend the telescopic rod 12 and drive the slide plate 13 to move inward, so that the internal pressure of the air pressure chamber 14 is reduced. When the telescopic rod 12 is extended to the longest, the pressure valve 19 reaches the pressure limit and opens. At this time, the gas in the telescopic baffle 17 is extracted and enters the air pressure chamber 14 through the pipeline. The telescopic baffle 17 opens, and the bristles in the whistle 16 are ejected after losing the obstruction and contact the inner wall of the throttle valve 7. After the bristles are ejected, it is convenient to clean the inner wall of the throttle valve 7 later, so as to avoid the throttle valve 7 being blocked by oil dirt due to long-term operation and prevent the lubrication work from failing. When the telescopic rod 12 is not extended to the longest, it means that the lubricating oil is still being discharged, and the pressure valve 19 cannot reach the pressure limit. The telescopic baffle 17 blocks the bristles, which can prevent a large number of bristles from interfering with the flow of the lubricating oil, thereby ensuring smooth discharge of the lubricating oil and improving the lubricating oil discharge efficiency.

[0049] In S5, the intelligent control module drives the tensioner 15 to operate, and the tensioner 15 pulls the drawstring 18 to deform. The drawstring 18 is elastic, and friction is generated between the drawstring 18 and the small hole of the whistle 16 after the force is applied. The two forces are combined to make the whistle 16 rotate in the center of the drawstring 18, thereby driving the bristles to rotate. The tensioner 15 is controlled according to the moving speed of the working plate 2 to change the rotation frequency of the whistle 16:

[0050] when When A min is the minimum moving speed of the working plate 2: the operation mode of the tensioner 15 is to operate once every ten minutes and control the frequency of the rotation of the whistle 16, F is the frequency at which the tensioner 15 causes the whistle 16 to rotate, max The maximum frequency at which the tensioner 15 rotates the whistle 16. The slower the moving speed of the working plate 2, the higher the frequency at which the tensioner 15 rotates the whistle 16. The working plate 2 with a slower moving speed uses more lubricating oil, and the oil stains generated are relatively more. To ensure the internal cleanliness of the throttle valve 7, the bristles are used to fully clean the inner wall of the throttle valve 7 to prevent the throttle valve 7 from being blocked by oil stains and affecting the oil discharge. The faster the moving speed of the working plate 2, the lower the frequency at which the tensioner 15 rotates the whistle 16. At this time, while ensuring the cleaning of the inner wall of the throttle valve 7, the loss of the bristles and the pull rope 18 is reduced, thereby increasing the service life of the device.

[0051] when When: the tensioner 15 operates once every ten minutes and only drives the whistle 16 to rotate one circle. At this time, the lubricating oil discharge is small, and the oil stain generated is relatively small, which can increase the service life of the brush hair and avoid excessive loss of the brush hair.

[0052] In the description of the present invention, it is necessary to understand that the terms "up", "down", "front", "back", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0053] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents, and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A lubricating oil spraying device for a CNC grinding machine capable of automatically controlling flow rate, comprising an intelligent control system, characterized in that: The CNC grinding machine comprises a workbench (1), a work plate (2) is slidably connected in the middle of the workbench (1), a clamping mechanism is fixedly installed above the work plate (2), an electric screw mechanism is fixedly installed at the lower rear side of the workbench (1), a speed detection module is arranged inside the electric screw mechanism, and the speed detection module is used to detect the speed of the work plate (2) moving forward and backward, the electric screw mechanism is fixedly connected to the work plate (2), a spray chamber (3) is fixedly installed on both left and right sides of the workbench (1), a flow control mechanism is arranged inside the spray chamber (3), a manipulator (4) is fixedly installed above the spray chamber (3), a nozzle (5) is fixedly installed at the front end of the manipulator (4), and the nozzle (5) is connected to the flow control mechanism pipeline; The flow control mechanism comprises a hydraulic pump (6), the hydraulic pump (6) is fixedly connected to the inner wall of the spray chamber (3), the left pipeline of the hydraulic pump (6) is connected to a throttle valve (7), the throttle valve (7) is provided with an oil inlet and an oil outlet, the oil outlet pipeline of the throttle valve (7) is connected to an oil pump (8), the oil pump (8) is connected to the nozzle (5) pipeline, a fixing ring (9) is fixedly installed on the inner wall of the throttle valve (7), an oil inlet pipe (10) is fixedly installed in the middle of the front end of the fixing ring (9), a valve block (11) is slidably connected in the middle of the oil inlet pipe (10), the valve block (11) is divided into a convex valve block and a concave valve block, the outer side of the valve block (11) is fixedly connected to a telescopic rod (12), the telescopic rod (12) is fixedly connected to the fixing ring (9), the telescopic rod ( 12) is connected to an external air pump pipeline, a slide plate (13) is fixedly installed on the inner end of the telescopic rod (12), an air pressure chamber (14) is fixedly installed on the inner wall of the fixing ring (9), the slide plate (13) is slidably connected to the inner wall of the air pressure chamber (14), a tensioner (15) is fixedly installed on the left side of the inner wall of the throttle valve (7), a pull rope (18) is fixedly connected to the left side of the tensioner (15), a whistle (16) is fixedly installed on the inner end of the pull rope (18), a telescopic baffle (17) is fixedly installed on the outer side of the inner wall of the whistle (16), the telescopic baffle (17) is connected to the air pressure chamber (14) pipeline and a pressure valve (19) is arranged in the pipeline, a plurality of bristles are arranged on the inner side of the telescopic baffle (17) and the bristles are elastic, and a plurality of the bristles are fixedly connected to the inner wall of the whistle (16); The intelligent control system comprises a data acquisition module, an intelligent conversion module and an intelligent control module. The data acquisition module is electrically connected to the speed detection module. The intelligent conversion module is electrically connected to the data acquisition module and the intelligent control module respectively. The intelligent control module is connected to an external air pump and a tensioner (15) respectively. The data acquisition module is used to collect the moving speed data of the working plate (2) in the speed detection module, the intelligent conversion module is used to convert according to the moving speed of the working plate (2) and input the result into the intelligent control module, and the intelligent control module is used to control the operation of the external air pump and the tensioner (15); The operation process of the intelligent control system includes: S1, intelligent control system operation; S2, the electric screw mechanism drives the working plate (2) to move forward and backward through electric drive, thereby moving the workpiece forward and backward, and the CNC grinder starts grinding; S3, the speed detection module is controlled by the electric drive to run, the speed detection module detects the moving speed of the working plate (2), the data acquisition module collects the moving speed data of the working plate (2) and inputs it into the intelligent conversion module, and the intelligent conversion module converts the result and inputs it into the intelligent control module; S4, the intelligent control module drives the external air pump to operate, injects gas into the telescopic rod (12), controls the flow rate, and controls the time from opening to closing of the valve block (11), thereby realizing flow control. When the moving speed of the working plate (2) is slow, the process proceeds to S5, otherwise, the process proceeds to S6; S5, the pressure valve (19) opens after reaching the bearing pressure, so that the telescopic baffle (17) opens, so that the bristles pop out and contact the inner wall of the throttle valve (7), and the intelligent control module drives the tensioner (15) to tighten the pull rope (18), and then enters S6; S6, after the grinding work is completed, the intelligent control system stops running. If the grinding work needs to be continued, S1 to S5 are repeated; In S5, the intelligent control module drives the external air pump to extend the telescopic rod (12) and drive the slide plate (13) to move inward, thereby reducing the internal pressure of the air pressure chamber (14).

2. A lubricating oil spraying device for a CNC grinding machine capable of automatically controlling flow rate according to claim 1, characterized in that: In S5, the intelligent control module drives the tensioner (15) to operate, and the tensioner (15) pulls the drawstring (18) to cause deformation. The drawstring (18) is elastic, and when the drawstring (18) is subjected to force, friction is generated between the drawstring (18) and the small hole of the whistle (16). The two forces are combined to cause the whistle (16) to rotate at the center of the drawstring (18), thereby driving the bristles to rotate. The tensioner (15) is controlled according to the moving speed of the working plate (2) to change the frequency of the rotation of the whistle (16).

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