CN114484244A - Numerical control lubricating oil spraying device capable of automatically controlling flow - Google Patents

Abstract

The invention discloses a numerically controlled lubricating oil spraying device capable of automatically controlling the flow rate, which comprises a numerically controlled grinding machine and an intelligent control system. The numerically controlled grinding machine comprises a worktable, and a workboard is slidably connected in the middle of the worktable, and a top of the workboard is slidably connected. A clamping mechanism is fixedly installed, an electric screw mechanism is fixedly installed under the rear side of the worktable, and a speed detection module is arranged in the electric screw mechanism. The electric screw mechanism is fixedly connected with the work plate, the left and right sides of the worktable are fixedly installed with a spraying cavity, the inside of the spraying cavity is provided with a flow control mechanism, a manipulator is fixedly installed above the spraying cavity, and the front end of the manipulator is fixedly installed There is a nozzle, the nozzle is connected with a pipeline of the flow control mechanism, and the device solves the problem that the intelligent lubricating oil spraying work cannot be carried out at present.

Description

A numerical control lubricating oil spraying device that can automatically control the flow

technical field

The invention belongs to the technical field of lubricating oil spraying, and particularly relates to a numerically controlled lubricating oil spraying device capable of automatically controlling flow.

Background technique

With the continuous advancement of lubricating oil spraying technology, more and more CNC grinding machines use lubricating oil spraying devices for lubricating oil spraying work. The functions of lubricating oil and lubricants on CNC machine tools include: lubricating function, reducing frictional resistance, reducing wear, Extend mechanical life, cooling function, can dissipate friction to generate heat, anti-rust function, can prevent surface corrosion of equipment parts, sealing function, can prevent leakage, dust, anti-bleeding, etc.

When spraying lubricating oil, the existing lubricating oil spraying device cannot perform intelligent spraying work according to the running speed of the grinding machine during grinding, and the workpiece needs to run back and forth during processing, so that the grinding effect of the grinding machine is better. Ensure the machining speed to move the workpiece back and forth quickly. During fine grinding, in order to ensure the machining quality, the workpiece is moved slowly and the work accuracy is ensured. When the workpiece moves back and forth, it is necessary to fully lubricate the table of the grinding machine to improve the grinding quality. During the lubrication process , the lubricating oil is easy to cause oil dirt inside the oil pipe, and the oil dirt cannot be cleaned in time, resulting in the blockage of the oil pipe. This phenomenon has become an urgent problem to be solved by those skilled in the art.

SUMMARY OF THE INVENTION

The purpose of the present invention is to solve the problems raised in the above-mentioned background technology by a numerical control lubricating oil spraying device that can automatically control the flow rate of the existing skid device.

In order to solve the above technical problems, the present invention provides the following technical solution: a numerical control lubricating oil spraying device that can automatically control the flow rate, including a numerical control grinding machine and an intelligent control system, characterized in that: the numerical control grinding machine includes a workbench, and the workbench A working plate is slidably connected in the middle, a clamping mechanism is fixedly installed above the working plate, an electric screw mechanism is fixedly installed under the rear side of the worktable, and a speed detection module is arranged in the electric screw mechanism, and the speed detection module It is used to detect the speed of the front and rear movement of the work plate. The electric screw mechanism is fixedly connected to the work plate. The left and right sides of the work table are fixedly installed with spraying chambers. The spraying chamber is provided with a flow control mechanism. A manipulator is fixedly installed above, and a nozzle is fixedly installed at the front end of the manipulator, and the nozzle is connected to the pipeline of the flow control mechanism.

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

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, and the intelligent conversion module is electrically connected to the data acquisition module and the intelligent control module respectively. connection, the intelligent control module is respectively connected with the external air pump and the tensioner;

The data acquisition module is used to collect the moving speed size data of the work board in the speed detection module, and the intelligent conversion module is used to convert according to the movement speed of the work board and input the result into the intelligent control module. Used to control the operation of external air pump and tensioner.

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

S1, the operation of the intelligent control system;

S2. The electric screw mechanism drives the work plate to move back and forth through the electric drive, so that the workpiece moves back and forth, and the CNC grinder starts the grinding work;

S3. The operation of the speed detection module is controlled by the electric drive, the speed detection module detects the movement speed of the work board, the data acquisition module collects the movement speed data of the work board and inputs it into the intelligent conversion module, and the intelligent conversion module converts the result and inputs it to the intelligent control in the module;

S4. The intelligent control module drives the external air pump to run, injects gas into the telescopic rod, controls the flow rate, and controls the time from opening to closing of the valve block to realize flow control. Enter S5 when the moving speed of the working plate is slow, and vice versa. Enter S6;

S5. The pressure valve is opened after it reaches the pressure, so that the telescopic baffle is opened, so that the bristles pop out and contact the inner wall of the throttle valve, and the intelligent control module drives the tensioner to tighten the rope, and then enter S6;

S6. After finishing the grinding work, the intelligent control system stops running. If the grinding work needs to be continued, repeat S1 to S5.

The present invention further illustrates that in the S4, the intelligent control module controls the operation of the external air pump, the external air pump injects gas into the telescopic rod, so that the telescopic rod is elongated, and the telescopic rod drives the convex valve block and the concave valve block to approach each other. The flow rate is controlled.

The present invention further illustrates that in the above S4, the intelligent control module drives the external air pump to inject gas into the telescopic rod to extend the telescopic rod to the longest, so that the telescopic rod drives the convex valve block and the concave valve block to fit each other, and blocks the lubricating oil. , Stop the lubricating oil discharge work, and control the frequency of opening and closing of the valve block according to the moving speed of the working plate to achieve multiple lubrication.

The present invention further illustrates that in S5, the intelligent control module drives the external air pump to drive the slide plate to move inward when the telescopic rod is extended, so that the pressure inside the air pressure chamber is reduced.

The present invention further illustrates that, in the S5, the intelligent control module drives the tensioner to run, the tensioner pulls the pull rope to produce deformation, the pull rope has elasticity, and friction is generated between the pull rope and the small hole of the whistle after being stressed. The combination of force makes 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.

Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the present invention adopts an intelligent control system and a flow control mechanism, and realizes intelligent discharge of the lubricating oil through the flow control mechanism, so that the lubricating effect of the lubricating oil on the grinding machine is improved. better.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the specification, and are used to explain the present invention together with the embodiments of the present invention, and do not constitute a limitation to the present invention. In the attached image:

Fig. 1 is the overall structure schematic diagram of the present invention;

Fig. 2 is the mechanical hand structure schematic diagram of the present invention;

3 is a schematic diagram of the internal structure of the spraying chamber of the present invention;

Figure 4 is a schematic diagram of the structure of the throttle valve of the present invention;

5 is a schematic diagram of the internal structure of the throttle valve of the present invention;

6 is a schematic plan view of the internal structure of the throttle valve of the present invention;

Fig. 7 is the schematic flow chart of the intelligent control system of the present invention;

In the figure: 1. Workbench; 2. Working plate; 3. Spraying cavity; 4. Robot arm; 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, pull whistle; 17, telescopic baffle; 18, pull rope; 19, pressure valve.

Detailed ways

The technical solution of the present invention is further described in non-limiting detail below in conjunction with the preferred embodiments and the accompanying drawings. Obviously, the described embodiments are only some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

1-7, the present invention provides a technical solution: a numerical control lubricating oil spraying device that can automatically control the flow rate, including a numerical control grinder and an intelligent control system, the numerical control grinder includes a workbench 1, and a work plate is slidably connected in the middle of the workbench 1 2. A clamping mechanism is fixed above the work plate 2, an electric screw mechanism is fixed under the rear side of the work table 1, and a speed detection module is arranged in the electric screw mechanism. The speed detection module is used to detect the speed of the work plate 2 moving back and forth. The electric screw mechanism is fixedly connected with the work plate 2, the left and right sides of the work table 1 are fixedly installed with a spraying cavity 3, a flow control mechanism is arranged inside the spraying cavity 3, a robotic arm 4 is fixed above the spraying cavity 3, and the front end of the robotic arm 4 is fixedly installed with Nozzle 5, the nozzle 5 is connected with the flow control mechanism pipeline, and the intelligent control system is electrically connected with the CNC grinding machine, the speed detection module, the electric screw mechanism, the manipulator 4, and the flow control mechanism. The operator places the processed workpiece on the work board 2 At this time, the CNC grinding machine is turned on, and the intelligent control system is operated by electric drive, and then the flow control mechanism is used to control the flow of lubricating oil through electric drive, and the lubricating oil enters the pipeline through the flow control mechanism , and then enter the nozzle 5 through the pipeline, and finally discharge from the nozzle 5. At the same time, the electric screw mechanism is controlled by the electric drive to move the work plate 2 back and forth, and the grinding work starts. The intelligent control system drives the speed detection module to the work plate 2 through electric drive. The speed of moving back and forth is detected. The moving speed during rough grinding is faster, and the speed during fine grinding is slower to ensure the quality of grinding. During the grinding process, the manipulator 4 is driven to run, and the manipulator 4 drives the nozzle 5 to work with the work plate 2. The lubricating oil is sprayed on the sliding part between the tables 1, and the lubricating oil is discharged intelligently through the flow control mechanism, so that the lubricating effect of the lubricating oil on the grinding machine is better;

The flow control mechanism includes a hydraulic pump 6, the hydraulic pump 6 is fixedly connected with the inner wall of the spraying chamber 3, a throttle valve 7 is connected to the pipeline on the left side of the hydraulic pump 6, and the throttle valve 7 is provided with an oil inlet and an oil outlet, and the throttle valve 7 The oil outlet pipeline is connected with the oil pump 8, the oil pump 8 is connected with the nozzle 5 pipeline, the inner wall of the throttle valve 7 is fixedly installed with a fixing ring 9, the front end of the fixing ring 9 is fixedly installed with an oil inlet pipe 10, and the oil inlet pipe 10 slides in the middle A valve block 11 is connected, and 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 outside of the valve block 11. The telescopic rod 12 is fixedly connected with the fixing ring 9, and the telescopic rod 12 is connected with the external air pump pipeline. A sliding 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, and the sliding plate 13 is slidably connected with the inner wall of the air pressure chamber 14. The side is fixedly connected with a pull rope 18, the inner end of the pull rope 18 is fixedly installed with a pull whistle 16, the outer side of the inner wall of the pull whistle 16 is fixedly installed with a telescopic baffle 17, the telescopic baffle 17 is connected with the air pressure chamber 14 pipeline and a pressure valve is arranged in the pipeline 19. Several bristles are provided on the inner side of the telescopic baffle 17 and the bristles are elastic. Several bristles are fixedly connected to the inner wall of the whistle 16. Step, the intelligent control system runs, and the operation of the hydraulic pump 6 is controlled by electric drive. 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 driven to control the operation of the external air pump. 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. After the lubricating oil is discharged Then, drive the telescopic rod 12 to extend to the longest, the convex valve block and the concave valve block fit each other, block the lubricating oil, stop the lubricating oil discharge work, when the telescopic rod 12 is extended, it drives the sliding plate 13 to move inward, so that the air pressure chamber The internal pressure of 14 decreases. When the telescopic rod 12 is extended to the longest, the pressure valve 19 reaches the pressure bearing limit and opens. At this time, the gas in the telescopic baffle 17 is extracted and then enters the air pressure chamber 14 through the pipeline, and the telescopic baffle 17 is extracted. After the gas starts to shrink until the telescopic baffle 17 is opened, the bristles are ejected after losing the blocking of the telescopic baffle 17. The 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 blocking and ejection and throttling. The inner wall of the valve 7 is in contact, and the pull rope 18 is in a state of intertwining. The pull rope 18 is pulled by the tensioner 15 to produce deformation. The pull rope 18 has elasticity. The combination of these forces makes the whistle 16 rotate in the center of the pull rope 18, thereby driving the bristles to rotate. According to the moving speed of the working plate 2, the tensioner 15 is controlled to change the rotation frequency of the whistle 16, and the inner wall of the throttle valve 7 works for a long time to produce grease. , so as to clean the inner wall of the throttle valve 7, and then control the operation of the oil pump 8 through electric drive, and the lubricating oil at the oil outlet is extracted by the oil pump 8 and then enters the nozzle 5 through the pipeline, Then it is discharged from the nozzle 5 to realize the lubricating oil spraying work;

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 with the speed detection module, the intelligent conversion module is electrically connected with the data acquisition module and the intelligent control module, and the intelligent control module is respectively connected with the external air pump, elastic device 15 is connected;

The data acquisition module is used to collect the moving speed size data of the work board 2 in the speed detection module. The intelligent conversion module is used to convert according to the movement speed of the work board 2 and input the result into the intelligent control module. The intelligent control module is used to control the external The air pump and the tensioner 15 are running;

The operation process of the intelligent control system includes:

S1, the operation of the intelligent control system;

S2. The electric screw mechanism drives the work plate 2 to move back and forth through the electric drive, so that the workpiece moves back and forth, and the CNC grinder starts the grinding work

S3. Control the operation of the speed detection module through the electric drive, the speed detection module detects the movement speed of the work board 2, the data acquisition module collects the movement speed data of the work board 2 and inputs it into the intelligent conversion module, and the intelligent conversion module converts the result and inputs it into In the intelligent control module;

S4. The intelligent control module drives the external air pump to run, 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 realize flow control, and enters when the moving speed of the working plate 2 is slow. S5, otherwise enter S6;

S5, the pressure valve 19 is opened after reaching the pressure, so that the telescopic baffle 17 is opened, 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 perform the tensioning work on the pull rope 18, and then enter S6;

S6. After finishing the grinding work, the intelligent control system stops running. If the grinding work needs to be continued, repeat S1 to S5;

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 elongate the telescopic rod 12, and 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:

Among them, V is the lubricating oil flow rate after the convex valve block and the concave valve block are close to each other, V _max is the lubricating oil flow rate when the convex valve block and the concave valve block are farthest apart, A _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, preventing the phenomenon of excessive spraying of the lubricating oil on the local area, improving the lubricating effect, and avoiding the waste of resources caused by the excessive spraying of the lubricating oil, saving energy In view of the cost, the faster the working plate 2 moves, 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 working table 1, the flow rate of the lubricating oil can be accelerated and the lubricating oil can be discharged quickly. go out;

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 the longest, so that the telescopic rod 12 drives the convex valve block and the concave valve block to fit each other, blocks the lubricating oil, and stops the lubricating oil. During the discharge work, the frequency of opening and closing of the valve block 11 is controlled according to the moving speed of the working plate 2 to achieve multiple lubrication:

Among them, F is the opening and closing frequency of the valve block 11, and _Tmax is the maximum frequency of opening and closing the valve block 11. The faster the working plate 2 moves, the higher the opening and closing frequency of the valve block 11. At this time, in order to ensure that the lubricating oil can Replenish the gap between the work plate 2 and the work table 1 in time, so that the lubricating oil can be discharged multiple times, improve the lubrication effect during rapid processing, and avoid the failure of the lubricating oil to be replenished after the consumption of the work table 1 and the work plate 2. If wear occurs, the slower the moving speed of the work plate 2, the lower the frequency of opening and closing of the valve block 11. At this time, the friction between the work table 1 and the work plate 2 is small, and the lubricating oil is enough to lubricate it, which can be relatively further Reduce the waste of lubricating oil;

In S5, the intelligent control module drives the external air pump so that when the telescopic rod 12 is extended, the sliding plate 13 is moved inwardly, so that the internal pressure of the air pressure chamber 14 is reduced. 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 is opened, and the bristles in the whistle 16 are ejected and contacted with the inner wall of the throttle valve 7 after losing their blocking. The inner wall of the throttle valve 7 is cleaned to prevent the throttle valve 7 from being blocked by grease due to long-term operation, and to prevent the failure of the lubrication work. 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 can withstand the limit, and the telescopic baffle 17 blocks the bristles, which can prevent a large number of bristles from interfering with the flow of lubricating oil, ensure smooth lubricating oil discharge, and improve lubricating oil discharge efficiency;

In S5, the intelligent control module drives the tensioner 15 to run, the tensioner 15 pulls the pull rope 18 to deform, and the pull rope 18 has elasticity. In combination, the whistle 16 is rotated in the center of the pull rope 18, thereby driving the bristles to rotate, and the frequency of the rotation of the whistle 16 is changed by controlling the tensioner 15 according to the moving speed of the work plate 2:

时，A_min为工作板2最小移动速度：松紧器15运行模式为间隔十分钟运行一次且对拉哨16转动的频率进行控制，

F为松紧器15使拉哨16转动的频率，F_max为松紧器15使拉哨16转动的最大频率，针对工作板2移动速度越慢，松紧器15使拉哨16转动的频率高，移动速度较慢的工作板2所使用的润滑油较多，产生的油垢相对就多，为保证节流阀7内部清洁，使刷毛对节流阀7内壁进行充分清理，避免节流阀7被油垢堵塞影响排油，针对工作板2移动速度越快，松紧器15使拉哨16转动的频率低，这时保证清理节流阀7内壁的同时，降低刷毛和拉绳18的损耗，提高该装置使用寿命；when

, A _min is the minimum moving speed of the working board 2: the operation mode of the tensioner 15 is to run once every ten minutes and control the rotation frequency of the pull whistle 16,

F is the frequency at which the tensioner 15 rotates the whistle 16, and _Fmax is the maximum frequency at which the tensioner 15 rotates the whistle 16. The slower the moving speed of the work plate 2, the higher the frequency at which the tensioner 15 rotates the whistle 16. The slower speed working plate 2 uses more lubricating oil and produces more oil scale. In order to ensure the internal cleaning of the throttle valve 7, the bristles can fully clean the inner wall of the throttle valve 7 to prevent the throttle valve 7 from being covered with oil scale. Blockage affects oil discharge. The faster the working plate 2 moves, the lower the frequency that the tensioner 15 makes the whistle 16 rotate. At this time, the inner wall of the throttle valve 7 is ensured to be cleaned, and the loss of the bristles and the pull rope 18 is reduced, and the device is improved. service life;

时：松紧器15运行模式为间隔十分钟运行一次且只驱动拉哨16转动一圈，这时的润滑油排放量少，产生的油垢相对较少，能够增长刷毛的使用寿命，避免刷毛损耗过大。when

When: the operating mode of the tensioner 15 is to run once every ten minutes and only drive the whistle 16 to rotate once. At this time, the amount of lubricating oil discharged is small, and the generated grease is relatively small, which can increase the service life of the bristles and avoid excessive wear and tear of the bristles. big.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc. is based on the drawings shown in the drawings. The orientation or positional relationship is only for the convenience of describing the present invention, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that it is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements to some of the technical features therein, and these modifications Or alternatively, the essence of the corresponding technical solutions does not deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (8)

1. The utility model provides a but numerical control lubricating oil spraying device of automatic control flow, includes numerically control grinder and intelligence control system, its characterized in that: numerical control grinding machine includes workstation (1), sliding connection has work board (2) in the middle of workstation (1), work board (2) top fixed mounting has fixture, workstation (1) rear side below fixed mounting has electric screw mechanism, be provided with speed detection module in the electric screw mechanism, speed detection module is used for detecting the speed of work board (2) back-and-forth movement, electric screw mechanism and work board (2) fixed connection, the equal fixed mounting in workstation (1) left and right sides has spraying chamber (3), spraying chamber (3) inside is provided with flow control mechanism, spraying chamber (3) top fixed mounting has manipulator (4), manipulator (4) front end fixed mounting has spray tube (5), spray tube (5) and flow control mechanism pipe connection.

2. The numerical control lubricating oil spraying device capable of automatically controlling flow according to claim 1, characterized in that: the flow control mechanism comprises a hydraulic pump (6), the hydraulic pump (6) is fixedly connected with the inner wall of the spraying cavity (3), a pipeline on the left side of the hydraulic pump (6) is connected with 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 with an oil well pump (8), the oil well pump (8) is connected with a spray pipe (5) through a 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, telescopic rods (12) are fixedly connected to the outer side of the valve block (11), the telescopic rods (12) are fixedly connected with the fixing ring (9), and the telescopic rods (12) are connected with an external air pump pipeline, telescopic link (12) inner fixed mounting has slide (13), solid fixed ring (9) inner wall fixed mounting has atmospheric pressure chamber (14), slide (13) and atmospheric pressure chamber (14) inner wall sliding connection, choke valve (7) inner wall left side fixed mounting has elasticity ware (15), elasticity ware (15) left side fixedly connected with stay cord (18), stay cord (18) inner fixed mounting has draws whistle (16), draw whistle (16) inner wall outside fixed mounting have retractable baffle (17), retractable baffle (17) and atmospheric pressure chamber (14) pipe connection and in the pipeline be provided with pressure valve (19), retractable baffle (17) inboard is provided with a plurality of brush hairs and brush hair and has elasticity, and is a plurality of the brush hair with draw whistle (16) inner wall fixed connection.

3. The numerical control lubricating oil spraying device capable of automatically controlling flow according to claim 2, characterized in that: the intelligent control system comprises a data acquisition module, an intelligent conversion module and an intelligent control module, wherein the data acquisition module is electrically connected with the speed detection module, the intelligent conversion module is respectively and electrically connected with the data acquisition module and the intelligent control module, and the intelligent control module is respectively connected with an external air pump and a tensioner (15);

the data acquisition module is used for acquiring the moving speed data of the working plate (2) in the speed detection module, the intelligent conversion module is used for converting according to the moving speed of the working plate (2) and inputting the result into the intelligent control module, and the intelligent control module is used for controlling the operation of an external air pump and a tensioner (15).

4. The numerical control lubricating oil spraying device capable of automatically controlling flow according to claim 3, characterized in that: the operation process of the intelligent control system comprises the following steps:

s1, operating an intelligent control system;

s2, the electric screw rod mechanism drives the working plate (2) to move back and forth through electric drive, so that the workpiece moves back and forth, and the numerical control grinding machine starts grinding;

s3, the speed detection module is controlled to operate through electric drive, the speed detection module detects the moving speed of the working plate (2), the data acquisition module acquires the moving speed data of the working plate (2) and inputs the moving speed data into the intelligent conversion module, and the intelligent conversion module converts the result and inputs the converted result into the intelligent control module;

s4, the intelligent control module drives an external air pump to operate, air is injected into the telescopic rod (12), flow rate control is carried out, the time from opening to closing of the valve block (11) is controlled, flow control is achieved, and the working plate enters S5 under the condition that the moving speed of the working plate (2) is low, and otherwise, the working plate enters S6;

s5, the pressure valve (19) is opened after bearing pressure, the telescopic baffle (17) is opened, the bristles are ejected to be in contact with the inner wall of the throttle valve (7), the intelligent control module drives the tightener (15) to tighten and loosen the pull rope (18), and then the operation enters S6;

and S6, stopping the operation of the intelligent control system after the grinding work is finished, and repeating S1 to S5 if the grinding work needs to be continued.

5. The numerical control lubricating oil spraying device capable of automatically controlling flow according to claim 4, characterized in that: in S4, the intelligent control module controls the operation of the external air pump, the external air pump injects air into the telescopic rod (12), so that the telescopic rod (12) is extended, and the telescopic rod (12) drives the convex valve block and the concave valve block to be close to each other, so as to control the flow rate of the lubricating oil.

6. The numerical control lubricating oil spraying device capable of automatically controlling flow according to claim 5, characterized in that: in S4, the intelligent control module drives the external air pump to inject air into the telescopic rod (12) to make the telescopic rod (12) extend to the longest, so that the telescopic rod (12) drives the convex valve block and the concave valve block to be mutually attached, lubricating oil is blocked, the lubricating oil discharging work is stopped, the valve block (11) is controlled to be opened and closed according to the moving speed of the working plate (2), and multiple times of lubrication are realized.

7. The numerical control lubricating oil spraying device capable of automatically controlling flow according to claim 6, characterized in that: in the S5, the intelligent control module drives the external air pump to drive the sliding plate (13) to move inwards when the telescopic rod (12) extends, so that the internal pressure of the air pressure cavity (14) is reduced.

8. The numerical control lubricating oil spraying device capable of automatically controlling flow according to claim 7, characterized in that: in the S5, the intelligent control module drives the tightener (15) to operate, the tightener (15) pulls the pull rope (18) to generate deformation, the pull rope (18) has elasticity, friction force is generated between the pull rope (18) and the small hole of the pull whistle (16) after the pull rope (18) is stressed, the two forces are combined, the pull whistle (16) rotates in the center of the pull rope (18), so that bristles are driven to rotate, and the tightener (15) is controlled according to the moving speed of the working plate (2) to change the rotating frequency of the pull whistle (16).

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