A high-speed ball screw pair with automatic lubrication function

Abstract

The present invention discloses a high-speed ball screw pair with automatic lubrication function, which relates to the technical field of ball screw pair, including a screw, wherein the outer surface of the screw is provided with a thread groove 1, the outer surface of the screw is sleeved with a nut, the inner surface of the nut is provided with a thread groove 2, and balls are placed on the surfaces where the thread groove 1 and the thread groove 2 are close to each other, and the interior of the nut is provided with a total oil storage module, a transfer oil storage module and a lubricating oil coating module, wherein the total oil storage module is used to store lubricating oil, and the lubricating oil is transported to the transfer oil storage module according to lubrication needs, and then transported to the lubricating oil coating module, and the lubricating oil coating module is used to apply lubricating oil to the balls. The present invention applies lubricating oil to the balls by installing a lubricating oil coating module, and detects the pressure of the balls on the fixed frame by a pressure sensor, and can dynamically adjust the supply of lubricating oil according to actual lubrication needs, thereby avoiding waste of resources due to excessive lubrication and wear or damage due to insufficient lubrication.

Description

Technical Field

[0001] The invention relates to the technical field of ball screw pairs, in particular to a high-speed ball screw pair with an automatic lubrication function. Background Art

[0002] Traditional high-speed ball screw pairs use a fixed lubricating oil supply method, which is difficult to adapt to the precise lubrication requirements under different working conditions. The high-speed ball screw pair of the present application can dynamically adjust the lubricating oil supply according to actual lubrication needs. By avoiding excessive lubrication, it can significantly reduce the waste of lubricating oil, reduce operating costs, and also reduce pollution to the environment. Secondly, since it can provide an appropriate amount of lubricating oil according to actual needs, it can effectively avoid wear or damage caused by insufficient lubrication, thereby improving the reliability and service life of the equipment.

[0003] The defects of existing high-speed ball screw pairs are:

[0004] 1. Patent document KR102383943B1 discloses a self-lubricating ball screw for self-propelled artillery. The document mainly considers how to prevent the performance of the ball screw from deteriorating by automatically supplying lubricating oil without refueling, but does not consider how to dynamically adjust the supply of lubricating oil according to actual lubrication needs to avoid waste of resources due to over-lubrication and wear or damage due to insufficient lubrication;

[0005] 2. Patent document KR102157159B1 discloses a ball screw lubrication device. The document mainly considers the problem of how to provide a ball screw lubrication device with a freely disassembled lubrication device that is not restricted by the type of ball screw, but does not consider the problem of how to accurately adjust the flow rate of lubricating oil, maintain the stability of lubricating oil supply, and prevent mechanical failures caused by insufficient or interrupted oil supply;

[0006] 3. Patent document CN112797129B discloses a static pressure lubrication cooling type ball screw pair and method. The document mainly considers how to achieve forced lubrication and cooling, but does not consider how to reduce the waste of lubricating oil and potential mechanical failures while ensuring that the nut is properly and continuously lubricated, and improve the operating efficiency and service life of the ball screw pair;

[0007] 4. Patent document CN107100992B discloses an automatic lubricating high-speed ball screw pair and method. The document mainly considers how to solve the problem that the lubrication method of the ball screw in the prior art is relatively complicated, and does not consider how to avoid the lubricating oil from overflowing due to the pressure generated by the vibration, movement or high-load operation of the ball screw pair, thereby reducing the loss of lubricating oil and keeping the environment clean. Summary of the invention

[0008] The object of the present invention is to provide a high-speed ball screw pair with automatic lubrication function to solve the problems raised in the above background technology.

[0009] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-speed ball screw pair with automatic lubrication function, comprising a screw, a first thread groove is formed on the outer surface of the screw, a nut is sleeved on the outer surface of the screw, a second thread groove is formed on the inner surface of the nut, a ball is placed on the surface of the first thread groove and the second thread groove close to each other, a total oil storage module, an intermediate oil storage module and a lubricating oil coating module are installed inside the nut, and the intermediate oil storage module is installed between the total oil storage module and the lubricating oil coating module, the lubricating oil coating module is located on one side of the ball, the total oil storage module is used to store lubricating oil, and the lubricating oil is transported to the intermediate oil storage module according to lubrication needs, and then transported to the lubricating oil coating module, and the lubricating oil coating module is used to apply lubricating oil to the ball;

[0010] The lubricating oil applying module comprises a layout frame 1 installed inside the nut, a fixed frame is installed inside the layout frame 1, and a symmetrically arranged lubricating oil through hole 1 is opened inside the fixed frame, a pressure sensor is installed at the bottom of the fixed frame, the pressure sensor is used to detect the pressure of the ball on the fixed frame, the pressure sensor is electrically connected to the controller, and a lubricating sponge is installed outside the fixed frame and the pressure sensor, and the lubricating sponge is located on the inner side of the layout frame 1;

[0011] The intermediate transfer oil storage module comprises an intermediate transfer oil storage box installed inside the nut, a high liquid level sensor 1 and a low liquid level sensor 1 are installed on the inner wall of the intermediate transfer oil storage box, and the high liquid level sensor 1 is located above the low liquid level sensor 1, the high liquid level sensor 1 and the low liquid level sensor 1 respectively detect the maximum oil storage amount and the minimum oil storage amount inside the intermediate transfer oil storage box, and an oil storage sponge is installed on the bottom wall of the intermediate transfer oil storage box, and the oil storage sponge is used for buffering and storing lubricating oil;

[0012] The top of the lubricating sponge is provided with evenly arranged oil-conducting cotton cores, the top ends of which extend into the bottom of the oil-storing sponge. The oil-conducting cotton cores are used to transport the lubricating oil passing through the oil-storing sponge to the lubricating sponge.

[0013] Preferably, the total oil storage module includes a total oil storage box installed inside the nut, and a high liquid level sensor 2 and a low liquid level sensor 2 are installed on the inner wall of the total oil storage box, and the high liquid level sensor 2 is located above the low liquid level sensor 2, and the high liquid level sensor 2 and the low liquid level sensor 2 respectively detect the maximum oil storage amount and the minimum oil storage amount inside the total oil storage box, and a lubricating oil quality sensor is installed on the inner wall of the total oil storage box, and the lubricating oil quality sensor is used to detect the quality of the lubricating oil inside the total oil storage box.

[0014] Preferably, an oil guide pipe is installed on the top of the intermediate oil storage box, a flow control valve is installed at one end of the oil guide pipe, and one end of the flow control valve is installed at the bottom of the main oil storage box. The flow control valve is used to control the flow rate of the lubricating oil transported from the main oil storage box to the intermediate oil storage box.

[0015] Preferably, an oil filling pipe is installed on the top of the main oil storage box, and an anti-backflow module is installed inside the oil filling pipe. The anti-backflow module is used to prevent the lubricating oil inside the main oil storage box from flowing back and overflowing when the nut is rotated.

[0016] Preferably, the anti-backflow module includes a second arrangement frame installed inside the oil filling pipe, and the interior of the second arrangement frame is provided with two symmetrically arranged lubricating oil through holes, a fixed plate is installed at the bottom of the second arrangement frame, and movable plates are installed on both sides of the fixed plate, and the radius of the movable plate is greater than the radius of the second lubricating oil through hole.

[0017] Preferably, an inner surface of the oil filling pipe is threadedly mounted with an inner protective plug, and the inner protective plug is located above the second arrangement frame.

[0018] Preferably, an outer protective plug is threadedly installed on the outer surface of the oil filling pipe, and the outer protective plug is located above the inner protective plug. A connecting ring is installed on one side of the outer protective plug, and one end of the connecting ring is installed on the outer surface of the oil filling pipe.

[0019] Preferably, a support seat is installed at one end of the screw, and a motor is installed at one end of one group of support seats, and the motor, high liquid level sensor 1, low liquid level sensor 1, high liquid level sensor 2, low liquid level sensor 2, lubricating oil quality sensor and flow control valve are electrically connected to the controller, and a reverser is installed inside the nut.

[0020] Preferably, the method of using the high-speed ball screw pair is as follows:

[0021] S1. When using a high-speed ball screw pair, inject lubricating oil into the main oil storage box through the oil filling pipe;

[0022] S2, the lubricating oil inside the main oil storage box flows through the intermediate oil storage box and enters the lubricating sponge;

[0023] S3. Use the lubricating sponge to apply lubricating oil to the outer surface of the ball.

[0024] Preferably, in S1, the following steps are also included:

[0025] S11, rotating and opening the outer protective plug and the inner protective plug, injecting lubricating oil into the main oil storage box until the second high liquid level sensor detects a liquid level signal;

[0026] S12, the high liquid level sensor 2 and the low liquid level sensor 2 inside the total oil storage box respectively detect the maximum oil storage amount and the minimum oil storage amount inside the total oil storage box, and the lubricating oil quality sensor is used to detect the quality of the lubricating oil inside the total oil storage box, and transmit the detected information of the lubricating oil quality, the maximum oil storage amount and the minimum oil storage amount inside the total oil storage box to the controller;

[0027] In S2, the following steps are also included:

[0028] S21, adjusting the flow control valve through the controller to adjust the flow rate of the lubricating oil transported from the main oil storage box to the intermediate oil storage box, the high liquid level sensor 1 and the low liquid level sensor 1 inside the intermediate oil storage box respectively detect the maximum oil storage amount and the minimum oil storage amount inside the intermediate oil storage box, and transmit the detected maximum oil storage amount and the minimum oil storage amount information inside the intermediate oil storage box to the controller;

[0029] S22, the oil storage sponge is used to buffer and store the lubricating oil, and transport the lubricating oil to the lubricating sponge through the oil guide cotton core;

[0030] In S3, the following steps are also included:

[0031] S31, when the ball passes through the lubricating sponge, it will exert pressure on the fixed frame. When the pressure sensor detects that the pressure is greater than the standard value, the flow control valve is adjusted by the controller to increase the flow rate of the lubricating oil transported from the main oil storage box to the intermediate oil storage box, so that more lubricating oil is applied to the surface of the ball;

[0032] S32. When the pressure sensor detects that the pressure is lower than the standard value, the flow control valve is adjusted by the controller to reduce the flow rate of the lubricating oil transported from the main oil storage box to the intermediate oil storage box, so as to reduce the lubricating oil applied to the surface of the ball.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] 1. The present invention applies lubricating oil to the ball by installing a lubricating oil coating module, and detects the pressure of the ball on the fixed frame by a pressure sensor, so as to adjust the lubricating oil of the lubricating oil coating module according to the detected pressure value. The pressure sensor detects the contact pressure between the ball and the fixed frame in real time, and feeds this data back to the controller. The controller determines the lubrication demand of the current ball according to the received pressure data. If the pressure value detected by the pressure sensor is high, it means that the friction between the ball and the fixed frame increases. At this time, the controller will instruct the lubricating oil coating module to increase the amount of lubricating oil applied to reduce friction and protect the ball and the fixed frame from wear. On the contrary, if the pressure value is low, the controller will reduce the supply of lubricating oil to avoid waste of resources caused by excessive lubrication. This design of dynamically adjusting the supply of lubricating oil not only effectively avoids the wear problem caused by insufficient lubrication, but also significantly improves the lubrication efficiency and reduces the operating cost. At the same time, it can also adapt to the lubrication requirements under different working conditions and load changes, making the entire ball screw pair more stable, reliable and efficient. Therefore, it can solve the problem of dynamically adjusting the supply of lubricating oil according to actual lubrication needs, avoiding waste of resources due to excessive lubrication and wear or damage caused by insufficient lubrication.

[0035] 2. The present invention is equipped with an intermediate oil storage module and a flow control valve, and detects the maximum oil storage amount and the minimum oil storage amount in the intermediate oil storage box through a liquid level sensor 1 and a low liquid level sensor 1 respectively, thereby ensuring that an appropriate amount of lubricating oil is always maintained in the intermediate oil storage box, avoiding the problem of insufficient lubrication due to insufficient oil, and also preventing excessive storage of lubricating oil, thereby reducing waste. The oil storage sponge is used to buffer and store the lubricating oil, and the oil storage sponge has excellent oil absorption performance, thereby ensuring that the lubricating oil can be supplied quickly and stably when needed. The flow rate of the lubricating oil transported from the total oil storage box to the intermediate oil storage box can be accurately controlled by adjusting the opening of the flow control valve, which not only ensures that the supply of lubricating oil is neither excessive nor insufficient, optimizes the lubrication effect, reduces the waste of lubricating oil, but also greatly reduces the risk of mechanical failure caused by improper lubrication, which makes the entire lubrication system more stable and reliable, and provides a strong guarantee for the long-term stable operation of the high-speed ball screw pair. Therefore, it can solve the problem of how to accurately adjust the lubricating oil flow rate, maintain the stability of the lubricating oil supply, and prevent mechanical failures caused by insufficient or interrupted oil supply.

[0036] 3. The present invention is equipped with a total oil storage module, which is used to store lubricating oil and transport the lubricating oil to the transit oil storage module according to lubrication needs. The maximum oil storage amount and the minimum oil storage amount in the total oil storage box are respectively detected by the high liquid level sensor 2 and the low liquid level sensor 2. When the oil amount is lower than the minimum oil storage amount, a reminder will be given to replenish the lubricating oil, thereby ensuring a continuous supply of lubricating oil. When the oil amount is close to the maximum oil storage amount, a warning will be issued to prevent the lubricating oil from overflowing, causing waste and environmental pollution. The quality of the lubricating oil in the total oil storage box is detected by the lubricating oil quality sensor. By continuously monitoring the oil amount and oil quality of the lubricating oil, impurities and moisture in the lubricating oil can be discovered in time, thereby avoiding ball screw pair failures caused by the use of inferior lubricating oil. Therefore, it can solve the problem of reducing lubricating oil waste and potential mechanical failures while ensuring that the nut is properly and continuously lubricated, thereby improving the operating efficiency and service life of the ball screw pair.

[0037] 4. The present invention is equipped with an anti-backflow module, which can prevent the lubricating oil inside the total oil storage box from flowing back and overflowing when the nut is rotated. The radius of the movable plate is larger than the radius of the lubricating oil through hole 2. In the reverse situation, the movable plate will cover the lubricating oil through hole 2 to prevent the lubricating oil from flowing back. However, when it is necessary to inject lubricating oil into the total oil storage box, external pressure or operation will temporarily move the movable plate away, allowing the lubricating oil to flow into the total oil storage box through the lubricating oil through hole 2, and the two layers of protective plugs, the inner protective plug and the outer protective plug, tightly block the oil filling pipe. By ensuring the consistency and stability of the lubricating oil flow direction, the operating reliability of the equipment is enhanced, and the additional replenishment and cleaning work caused by the loss of lubricating oil is reduced, thereby reducing the maintenance cost. Therefore, it can solve the problem of how to prevent the lubricating oil from overflowing due to the pressure generated by the vibration, movement or high-load operation of the ball screw pair, thereby reducing the loss of lubricating oil and keeping the environment clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0039] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention;

[0040] Figure 3 For the present invention Figure 2 The enlarged structural diagram at A in the middle;

[0041] Figure 4 It is a schematic diagram of the fixed skeleton structure of the present invention;

[0042] Figure 5 This is a schematic diagram of the structure of the total oil storage module of the present invention;

[0043] Figure 6 It is a schematic diagram of the structure of the backflow prevention module of the present invention;

[0044] Figure 7 It is a schematic diagram of the structure of the second arrangement frame and the second lubricating oil through hole of the present invention;

[0045] Figure 8 It is a schematic diagram of the structure of the fixed plate and the movable plate of the present invention;

[0046] Fig. 9 It is the work flow chart of the present invention.

[0047] In the figure: 1. lead screw; 2. nut; 3. ball; 4. arranging frame 1; 5. fixed frame; 6. lubricating oil through hole 1; 7. pressure sensor; 8. lubricating sponge; 9. intermediate oil storage box; 10. high liquid level sensor 1; 11. low liquid level sensor 1; 12. oil storage sponge; 13. oil guide cotton core; 14. total oil storage box; 15. high liquid level sensor 2; 16. low liquid level sensor 2; 17. lubricating oil quality sensor; 18. oil guide pipe; 19. flow control valve; 20. oil filling pipe; 21. arranging frame 2; 22. lubricating oil through hole 2; 23. fixed plate; 24. movable plate; 25. inner protective plug; 26. outer protective plug; 27. connecting ring; 28. support seat; 29. ​​motor; 30. reverser. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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.

[0049] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0050] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Fig. 9 , an embodiment provided by the present invention: a high-speed ball screw pair with automatic lubrication function, comprising a screw 1, a thread groove 1 is provided on the outer surface of the screw 1, a nut 2 is sleeved on the outer surface of the screw 1, a thread groove 2 is provided on the inner surface of the nut 2, a ball 3 is placed on the surface where the thread groove 1 and the thread groove 2 are close to each other, a total oil storage module, an intermediate oil storage module and a lubricating oil coating module are installed inside the nut 2, and the intermediate oil storage module is installed between the total oil storage module and the lubricating oil coating module, the lubricating oil coating module is located on one side of the ball 3, the total oil storage module is used to store lubricating oil, and the lubricating oil is transported to the intermediate oil storage module according to lubrication needs, and then transported to the lubricating oil coating module, and the lubricating oil coating module is used to apply lubricating oil to the ball 3;

[0052] The lubricating oil applying module comprises a layout frame 4 installed inside the nut 2, a fixed frame 5 is installed inside the layout frame 4, and symmetrically arranged lubricating oil through holes 6 are opened inside the fixed frame 5. A pressure sensor 7 is installed at the bottom of the fixed frame 5. The pressure sensor 7 is used to detect the pressure of the ball 3 on the fixed frame 5. The pressure sensor 7 is electrically connected to the controller. A lubricating sponge 8 is installed outside the fixed frame 5 and the pressure sensor 7, and the lubricating sponge 8 is located on the inner side of the layout frame 4;

[0053] The intermediate transfer oil storage module includes an intermediate transfer oil storage box 9 installed inside the nut 2, and a high liquid level sensor 10 and a low liquid level sensor 11 are installed on the inner wall of the intermediate transfer oil storage box 9, and the high liquid level sensor 10 is located above the low liquid level sensor 11, and the high liquid level sensor 10 and the low liquid level sensor 11 respectively detect the maximum oil storage amount and the minimum oil storage amount inside the intermediate transfer oil storage box 9, and the bottom wall of the intermediate transfer oil storage box 9 is installed with an oil storage sponge 12, and the oil storage sponge 12 is used for buffering and storing lubricating oil;

[0054] The top of the lubricating sponge 8 is provided with evenly arranged oil-conducting cotton cores 13 , the top of which extends into the bottom of the oil-storing sponge 12 . The oil-conducting cotton cores 13 are used to transport the lubricating oil passing through the oil-storing sponge 12 to the lubricating sponge 8 .

[0055] Furthermore, the design of the total oil storage module allows a large amount of lubricating oil to be stored and ready to be released at any time according to lubrication needs, which not only ensures sufficient supply of lubricating oil, but also avoids the problem of poor lubrication effect caused by insufficient lubricating oil. The intermediate oil storage module acts as a bridge between the total oil storage module and the lubricating oil application module. It can receive the lubricating oil from the total oil storage module as needed, and temporarily store it, and then release it according to the needs of the lubricating oil application module, making the transportation of lubricating oil more flexible and controllable;

[0056] The lubricating oil coating module directly acts on the ball 3 to coat it with lubricating oil. Since the ball 3 plays a key transmission role between the screw 1 and the nut 2, its lubrication state directly affects the motion performance of the entire ball screw pair. Through the precise coating of the lubricating oil coating module, it can be ensured that the ball 3 always maintains a good lubrication state, thereby improving the motion efficiency and accuracy of the ball screw pair;

[0057] By integrating the total oil storage module, the intermediate oil storage module and the lubricating oil application module, the automatic lubrication of the ball 3 is realized, which effectively improves the movement efficiency and life of the lead screw 1 and the nut 2, reduces the frequency and difficulty of manual maintenance, and reduces the cost of use. At the same time, due to the precise application of lubricating oil, the oil pollution and waste caused by excessive lubrication can also be reduced;

[0058] The symmetrically arranged lubricating oil through holes 6 inside the fixed frame 5 ensure the uniform distribution of the lubricating oil, so that the lubricating sponge 8 can uniformly absorb and store the lubricating oil. The material of the lubricating sponge 8 should have good oil absorption and oil release properties to ensure that the lubricating oil can be stably provided to the ball 3. Secondly, the installation of the pressure sensor 7 enables real-time detection of the pressure of the ball 3 on the fixed frame 5, because the ball 3 is subjected to different pressures and frictions during operation, and the pressure sensor 7 can accurately capture these changes. Through the electrical connection with the controller, the pressure sensor 7 can convert the detected pressure signal into a control signal, thereby realizing precise control of the lubricating oil application module;

[0059] When the pressure of the ball 3 on the fixed frame 5 increases, the controller will increase the supply of lubricating oil according to the signal of the pressure sensor 7 to ensure that the ball 3 can be fully lubricated in the high-pressure area. On the contrary, when the pressure decreases, the controller will reduce the supply of lubricating oil to avoid unnecessary waste. This method of dynamically adjusting the supply of lubricating oil not only improves the lubrication effect, but also realizes the rational use of lubricating resources. The close combination of the lubricating sponge 8, the fixed frame 5 and the pressure sensor 7 ensures the stable supply and uniform application of lubricating oil. The lubricating sponge 8 ensures that the lubricating oil can be accurately applied to the ball 3.

[0060] The lubricating oil applying module realizes accurate lubrication of the ball 3 by combining the arrangement frame 4, the fixed frame 5, the pressure sensor 7 and the lubricating sponge 8, and this lubrication method can be dynamically adjusted according to the actual working condition of the ball 3 to ensure that the ball 3 always maintains a good lubrication state, thereby improving the motion performance and life of the entire ball screw pair;

[0061] The intermediate oil storage box 9 is used as the main oil storage container, and a high liquid level sensor 10 and a low liquid level sensor 11 are installed inside the intermediate oil storage box 9. These two sensors detect the maximum oil storage amount and the minimum oil storage amount inside the intermediate oil storage box 9 respectively, so as to grasp the storage situation of the lubricating oil in real time. When the lubricating oil reaches the maximum liquid level, the high liquid level sensor 10 will send a signal to stop supplying oil to the intermediate oil storage box 9 to avoid oil overflow. When the lubricating oil drops to the minimum liquid level, the low liquid level sensor 11 will send a signal to replenish the lubricating oil to the intermediate oil storage box 9 to ensure the continuous supply of lubricating oil.

[0062] The oil storage sponge 12 installed on the bottom wall of the transfer oil storage box 9 not only has excellent oil absorption performance and can fully absorb and store lubricating oil, but also its softness and elasticity can also play a buffering role, reducing the impact and vibration of the lubricating oil during the flow process. The design of the oil guiding cotton core 13 cleverly connects the oil storage sponge 12 and the lubricating sponge 8. The oil guiding cotton core 13 can transport the lubricating oil passing through the oil storage sponge 12 to the lubricating sponge 8, ensuring the uniform distribution and effective application of the lubricating oil, which not only improves the lubrication efficiency, but also makes the lubrication process more controllable and precise.

[0063] See also Figure 5An embodiment of the present invention is: a high-speed ball screw pair with automatic lubrication function, the total oil storage module includes a total oil storage box 14 installed inside the nut 2, the inner wall of the total oil storage box 14 is installed with a high liquid level sensor 15 and a low liquid level sensor 16, and the high liquid level sensor 15 is located above the low liquid level sensor 16, the high liquid level sensor 15 and the low liquid level sensor 16 respectively detect the maximum oil storage amount and the minimum oil storage amount inside the total oil storage box 14, the inner wall of the total oil storage box 14 is installed with a lubricating oil quality sensor 17, and the lubricating oil quality sensor 17 is used to detect the quality of the lubricating oil inside the total oil storage box 14.

[0064] Furthermore, the total oil storage box 14, as the main storage container, has sufficient capacity to store a large amount of lubricating oil to meet the long-term and high-intensity lubrication needs of the ball screw pair. The high liquid level sensor 15 and the low liquid level sensor 16 installed on the inner wall are respectively used to monitor the maximum and minimum oil storage amounts in the total oil storage box 14, so that the remaining amount of lubricating oil can be grasped in real time. When the oil amount is lower than the minimum liquid level, an alarm is issued in time or the lubricating oil is automatically replenished, thereby avoiding the reduction of lubrication effect or ball screw pair failure caused by insufficient oil. The total oil storage box 14 is also equipped with a lubricating oil quality sensor 17, which can monitor the quality of the lubricating oil in real time, including its viscosity, cleanliness, and whether there are impurities or moisture. Through continuous monitoring of the quality of the lubricating oil, the aging and contamination problems of the lubricating oil can be discovered in time, and corresponding measures can be taken, including replacing new oil or filtering treatment, to ensure that the screw 1 pair always uses high-quality lubricating oil. By integrating the total oil storage box 14, the liquid level sensor and the lubricating oil quality sensor 17, the sufficient supply and excellent quality of the lubricating oil are ensured.

[0065] See also Figure 3 An embodiment of the present invention is: a high-speed ball screw pair with automatic lubrication function, wherein an oil guide pipe 18 is installed on the top of the intermediate oil storage box 9, a flow control valve 19 is installed at one end of the oil guide pipe 18, and one end of the flow control valve 19 is installed at the bottom of the main oil storage box 14. The flow control valve 19 is used to control the flow rate of the lubricating oil transported from the main oil storage box 14 to the intermediate oil storage box 9.

[0066] Furthermore, one end of the oil guide pipe 18 is connected to the bottom of the total oil storage box 14, and the other end is installed on the top of the intermediate oil storage box 9, forming a channel for the lubricating oil to flow from the total oil storage box 14 to the intermediate oil storage box 9, and the flow control valve 19 is installed on the oil guide pipe 18, which plays a key role in controlling the flow rate of the lubricating oil. The flow control valve 19 can accurately adjust the flow rate of the lubricating oil according to the actual needs of the system. When the controller receives a signal that the amount of lubricating oil in the intermediate oil storage box 9 is low, the flow control valve 19 will automatically increase the flow rate of the lubricating oil to ensure that the intermediate oil storage box 9 can be quickly replenished with sufficient lubricating oil. On the contrary, when the amount of lubricating oil in the intermediate oil storage box 9 is close to the high liquid level, the flow control valve 19 will reduce the flow rate to prevent excessive lubricating oil from entering the intermediate oil storage box 9, causing overflow or other problems;

[0067] By precisely controlling the flow rate of the lubricating oil, the flow control valve 19 effectively avoids waste and shortage of the lubricating oil. In addition, the precise control of the flow control valve 19 also helps to maintain the quality of the lubricating oil. Since the flow rate is effectively controlled, the impact and friction to which the lubricating oil is subjected during the flow process will also be reduced accordingly, which helps to reduce oxidation and contamination of the lubricating oil, thereby extending its service life and providing a strong guarantee for the lubrication function of the entire high-speed ball screw pair.

[0068] See also Figure 5 , Figure 6 , Figure 7 and Figure 8 An embodiment of the present invention is: a high-speed ball screw pair with automatic lubrication function, wherein an oil filling pipe 20 is installed on the top of the main oil storage box 14, and an anti-backflow module is installed inside the oil filling pipe 20, and the anti-backflow module is used to prevent the lubricating oil inside the main oil storage box 14 from flowing back and overflowing when the nut 2 rotates.

[0069] The anti-backflow module includes an arrangement frame 21 installed inside the oil filling pipe 20, and the arrangement frame 21 is provided with symmetrically arranged lubricating oil through holes 22 inside. A fixed plate 23 is installed at the bottom of the arrangement frame 21, and movable plates 24 are installed on both sides of the fixed plate 23, and the radius of the movable plate 24 is greater than the radius of the lubricating oil through hole 22.

[0070] Furthermore, the components of the anti-backflow module include a layout frame 21, a lubricating oil through hole 22, a fixed plate 23 and a movable plate 24. The layout frame 21 is installed inside the oil filling pipe 20. The lubricating oil through hole 22 arranged symmetrically inside allows the lubricating oil to flow smoothly into the main oil storage box 14 when needed, and the fixed plate 23 is installed at the bottom of the layout frame 21 to provide a stable support for the movable plate 24. The radius of the movable plate 24 is greater than the radius of the lubricating oil through hole 22, which means that in the case of inversion, the movable plate 24 will cover the lubricating oil through hole 22. 2. Prevent the backflow of lubricating oil. However, when it is necessary to inject lubricating oil into the main oil storage box 14, external pressure or operation will temporarily move the movable plate 24 away, allowing the lubricating oil to flow into the main oil storage box 14 through the lubricating oil through hole 22. Once the injection is completed, the movable plate 24 will automatically reset and reseal the lubricating oil through hole 22 to prevent the backflow of lubricating oil. It can effectively prevent the backflow and overflow of lubricating oil when the ball screw pair is running, ensure the stable supply of lubricating oil, and also avoid the ball screw pair failure or environmental pollution problems that may be caused by lubricating oil leakage.

[0071] See also Figure 5 and Figure 6 The present invention provides an embodiment: a high-speed ball screw pair with automatic lubrication function, wherein the inner surface of the oil filling pipe 20 is threadedly installed with an inner protective plug 25, and the inner protective plug 25 is located above the arrangement frame 21.

[0072] An outer protective plug 26 is threadedly mounted on the outer surface of the oil filling pipe 20 , and the outer protective plug 26 is located above the inner protective plug 25 . A connecting ring 27 is mounted on one side of the outer protective plug 26 , and one end of the connecting ring 27 is mounted on the outer surface of the oil filling pipe 20 .

[0073] Furthermore, the inner protective plug 25 is installed on the inner surface of the oil filling pipe 20 and is located above the second arrangement frame 21, so that the inner protective plug 25 can effectively prevent the lubricating oil from leaking out from the inside of the oil filling pipe 20, especially when the main oil storage box 14 is full of oil or no lubricating oil needs to be added, the inner protective plug 25 is tightly connected to the oil filling pipe 20 through a thread, ensuring its good sealing performance;

[0074] The outer protective plug 26 is installed on the outer surface of the oil filling pipe 20, and is located above the inner protective plug 25. The main function of the outer protective plug 26 is to prevent external pollutants such as dust and impurities from entering the oil filling pipe 20, thereby keeping the oil filling pipe 20 clean and the lubricating oil pure. Similarly, the outer protective plug 26 is also connected to the oil filling pipe 20 through threads to ensure its stability and sealing.

[0075] The design of the connecting ring 27 further enhances the connection strength between the outer protective plug 26 and the oil filling pipe 20. One end of the connecting ring 27 is mounted on the outer surface of the oil filling pipe 20, and the other end is connected to the outer protective plug 26 to form a stable supporting structure, which not only makes it more difficult for the outer protective plug 26 to fall off, but also facilitates the user to operate and maintain the oil filling pipe 20.

[0076] The oil filling pipe 20 achieves double protection for the lubricating oil by adding an inner protective plug 25, an outer protective plug 26 and a connecting ring 27, thereby preventing both internal leakage and external contamination, improving the reliability of the lubrication system and extending the service life of the lubricating oil, thus providing a strong guarantee for the lubrication function of the entire high-speed ball screw pair.

[0077] See also Figure 3 and Figure 5 An embodiment of the present invention is: a high-speed ball screw pair with automatic lubrication function, wherein a support seat 28 is installed at one end of the screw 1, a motor 29 is installed at one end of one group of support seats 28, and the motor 29, a high liquid level sensor 10, a low liquid level sensor 11, a high liquid level sensor 2 15, a low liquid level sensor 2 16, a lubricating oil quality sensor 17 and a flow control valve 19 are electrically connected to the controller, and a reverser 30 is installed inside the nut 2.

[0078] Furthermore, the support seat 28 at one end of the screw 1 not only provides stable support, but also integrates a motor 29 to provide power for the rotational movement of the screw 1. The motor 29, high liquid level sensor 10, low liquid level sensor 11, high liquid level sensor 2 15, low liquid level sensor 2 16, lubricating oil quality sensor 17 and flow control valve 19 are all electrically connected to the controller, which enables the entire ball screw pair to achieve precise automatic control. The controller can adjust the speed of the motor 29 and the opening of the flow control valve 19 according to the real-time data of each sensor, thereby ensuring that the supply and quality of the lubricating oil are always maintained in the best state. The reverser 30 is used to connect the two ends of the ball 3 circulation to ensure that each ball 3 circulation loop is a closed loop. Between the nut 2 and the screw 1, the reverser 30 can enable the ball 3 to perform infinite circulation motion.

[0079] Further, the use of high-speed ball screw pair is as follows:

[0080] S1. When using a high-speed ball screw pair, inject lubricating oil into the main oil storage box 14 through the oil filling pipe 20;

[0081] S2, the lubricating oil in the main oil storage box 14 flows through the intermediate oil storage box 9 and enters the lubricating sponge 8;

[0082] S3, the lubricating sponge 8 applies lubricating oil to the outer surface of the passing ball 3.

[0083] Furthermore, in S1, the following steps are also included:

[0084] S11, rotating and opening the outer protective plug 26 and the inner protective plug 25, injecting lubricating oil into the main oil storage box 14 until the high liquid level sensor 15 detects a liquid level signal;

[0085] S12, the high liquid level sensor 15 and the low liquid level sensor 16 inside the total oil storage box 14 respectively detect the maximum oil storage amount and the minimum oil storage amount inside the total oil storage box 14, and the lubricating oil quality sensor 17 is used to detect the quality of the lubricating oil inside the total oil storage box 14, and transmit the detected information of the lubricating oil quality, the maximum oil storage amount and the minimum oil storage amount inside the total oil storage box 14 to the controller;

[0086] In S2, the following steps are also included:

[0087] S21, the flow rate of the lubricating oil transported from the main oil storage box 14 to the intermediate oil storage box 9 is adjusted by adjusting the flow control valve 19 through the controller, and the high liquid level sensor 10 and the low liquid level sensor 11 inside the intermediate oil storage box 9 respectively detect the maximum oil storage amount and the minimum oil storage amount inside the intermediate oil storage box 9, and transmit the detected maximum oil storage amount and the minimum oil storage amount information inside the intermediate oil storage box 9 to the controller;

[0088] S22, the oil storage sponge 12 is used to buffer and store lubricating oil, and transport the lubricating oil to the lubricating sponge 8 through the oil guide cotton core 13;

[0089] In S3, the following steps are also included:

[0090] S31, when the ball 3 passes through the lubricating sponge 8, it will exert pressure on the fixed frame 5. When the pressure sensor 7 detects that the pressure is greater than the standard value, the flow control valve 19 is adjusted by the controller to increase the flow rate of the lubricating oil transported from the main oil storage box 14 to the intermediate oil storage box 9, so that more lubricating oil is applied to the surface of the ball 3;

[0091] S32. When the pressure sensor 7 detects that the pressure is lower than the standard value, the flow control valve 19 is adjusted by the controller to reduce the flow rate of the lubricating oil transported from the main oil storage box 14 to the intermediate oil storage box 9, so that the lubricating oil applied to the surface of the ball 3 is reduced.

[0092] Working principle: Rotate and open the outer protective plug 26 and the inner protective plug 25, inject lubricating oil into the total oil storage box 14 until the high liquid level sensor 15 detects the liquid level signal, the high liquid level sensor 15 and the low liquid level sensor 16 inside the total oil storage box 14 respectively detect the maximum oil storage amount and the minimum oil storage amount inside the total oil storage box 14, the lubricating oil quality sensor 17 is used to detect the quality of the lubricating oil inside the total oil storage box 14, and transmit the detected information of the lubricating oil quality, the maximum oil storage amount and the minimum oil storage amount inside the total oil storage box 14 to the controller;

[0093] The flow rate of the lubricating oil transported from the total oil storage box 14 to the intermediate oil storage box 9 is adjusted by adjusting the flow control valve 19 through the controller. The high liquid level sensor 10 and the low liquid level sensor 11 inside the intermediate oil storage box 9 respectively detect the maximum oil storage amount and the minimum oil storage amount inside the intermediate oil storage box 9, and transmit the detected maximum oil storage amount and the minimum oil storage amount information inside the intermediate oil storage box 9 to the controller. The oil storage sponge 12 is used to buffer and store the lubricating oil, and transport the lubricating oil to the lubricating sponge 8 through the oil guide cotton core 13;

[0094] When the ball 3 passes through the lubricating sponge 8, it will exert pressure on the fixed frame 5. When the pressure sensor 7 detects that the pressure is greater than the standard value, the flow control valve 19 is adjusted by the controller to increase the flow rate of the lubricating oil transported from the main oil storage box 14 to the intermediate oil storage box 9, so that more lubricating oil is applied to the surface of the ball 3;

[0095] When the pressure sensor 7 detects that the pressure is lower than the standard value, the controller adjusts the flow control valve 19 to reduce the flow rate of the lubricating oil transported from the main oil storage box 14 to the intermediate oil storage box 9, so that the lubricating oil applied to the surface of the ball 3 is reduced.

[0096] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A high-speed ball screw pair with automatic lubrication function, comprising a screw (1), characterized in that: The outer surface of the lead screw (1) is provided with a thread groove 1, a nut (2) is sleeved on the outer surface of the lead screw (1), a thread groove 2 is provided on the inner surface of the nut (2), a ball (3) is placed on the surface where the thread groove 1 and the thread groove 2 are close to each other, a total oil storage module, an intermediate oil storage module and a lubricating oil coating module are installed inside the nut (2), and the intermediate oil storage module is installed between the total oil storage module and the lubricating oil coating module, the lubricating oil coating module is located on one side of the ball (3), the total oil storage module is used to store lubricating oil, and according to lubrication needs, the lubricating oil is transported to the intermediate oil storage module, and then transported to the lubricating oil coating module, and the lubricating oil coating module is used to apply lubricating oil to the ball (3); The lubricating oil application module comprises a layout frame (4) installed inside the nut (2), a fixed frame (5) is installed on the inner side of the layout frame (4), and symmetrically arranged lubricating oil through holes (6) are opened inside the fixed frame (5), a pressure sensor (7) is installed at the bottom of the fixed frame (5), and the pressure sensor (7) is used to detect the pressure of the ball (3) on the fixed frame (5), and the pressure sensor (7) is electrically connected to a controller, and a lubricating sponge (8) is installed on the outer side of the fixed frame (5) and the pressure sensor (7), and the lubricating sponge (8) is located on the inner side of the layout frame (4); The intermediate oil storage module comprises an intermediate oil storage box (9) installed inside the nut (2); a high liquid level sensor (10) and a low liquid level sensor (11) are installed on the inner wall of the intermediate oil storage box (9); the high liquid level sensor (10) is located above the low liquid level sensor (11); the high liquid level sensor (10) and the low liquid level sensor (11) respectively detect the maximum oil storage amount and the minimum oil storage amount inside the intermediate oil storage box (9); and an oil storage sponge (12) is installed on the bottom wall of the intermediate oil storage box (9); the oil storage sponge (12) is used to buffer and store lubricating oil; The top of the lubricating sponge (8) is provided with uniformly arranged oil-conducting cotton cores (13), the top of the oil-conducting cotton cores (13) extending into the bottom of the oil-storing sponge (12), and the oil-conducting cotton cores (13) are used to transport the lubricating oil passing through the oil-storing sponge (12) to the lubricating sponge (8); The total oil storage module comprises a total oil storage box (14) installed inside the nut (2); An oil guide pipe (18) is installed on the top of the intermediate oil storage box (9), a flow control valve (19) is installed at one end of the oil guide pipe (18), one end of the flow control valve (19) is installed at the bottom of the main oil storage box (14), and the flow control valve (19) is used to control the flow rate of lubricating oil transported from the main oil storage box (14) to the intermediate oil storage box (9); When the ball (3) passes through the lubricating sponge (8), it applies pressure to the fixed frame (5). When the pressure sensor (7) detects that the pressure is greater than the standard value, the flow rate of the lubricating oil transported from the main oil storage box (14) to the intermediate oil storage box (9) is increased by adjusting the flow control valve (19) through the controller, so that more lubricating oil is applied to the surface of the ball (3); When the pressure sensor (7) detects that the pressure is less than the standard value, the flow control valve (19) is adjusted by the controller to reduce the flow rate of the lubricating oil transported from the main oil storage box (14) to the intermediate oil storage box (9), thereby reducing the lubricating oil applied to the surface of the ball (3).

2. The high-speed ball screw pair with automatic lubrication function according to claim 1, characterized in that: A second high liquid level sensor (15) and a second low liquid level sensor (16) are mounted on the inner wall of the total oil storage box (14), and the second high liquid level sensor (15) is located above the second low liquid level sensor (16). The second high liquid level sensor (15) and the second low liquid level sensor (16) respectively detect the maximum oil storage amount and the minimum oil storage amount inside the total oil storage box (14). A lubricating oil quality sensor (17) is mounted on the inner wall of the total oil storage box (14). The lubricating oil quality sensor (17) is used to detect the quality of the lubricating oil inside the total oil storage box (14).

3. The high-speed ball screw pair with automatic lubrication function according to claim 1, characterized in that: An oil filling pipe (20) is installed on the top of the main oil storage box (14), and an anti-backflow module is installed inside the oil filling pipe (20). The anti-backflow module is used to prevent the lubricating oil inside the main oil storage box (14) from flowing back and overflowing when the nut (2) rotates.

4. The high-speed ball screw pair with automatic lubrication function according to claim 3 is characterized in that: The backflow prevention module comprises a second arrangement frame (21) installed inside the oil injection pipe (20), the second arrangement frame (21) is provided with two symmetrically arranged lubricating oil through holes (22), a fixed plate (23) is installed at the bottom of the second arrangement frame (21), movable plates (24) are installed on both sides of the fixed plate (23), and the radius of the movable plate (24) is greater than the radius of the second lubricating oil through hole (22).

5. The high-speed ball screw pair with automatic lubrication function according to claim 4, characterized in that: An inner protective plug (25) is installed on the inner surface of the oil filling pipe (20) via a thread, and the inner protective plug (25) is located above the second arrangement frame (21).

6. The high-speed ball screw pair with automatic lubrication function according to claim 5, characterized in that: An outer protective plug (26) is threadedly mounted on the outer surface of the oil filling pipe (20), and the outer protective plug (26) is located above the inner protective plug (25). A connecting ring (27) is mounted on one side of the outer protective plug (26), and one end of the connecting ring (27) is mounted on the outer surface of the oil filling pipe (20).

7. The high-speed ball screw pair with automatic lubrication function according to claim 1, characterized in that: A support seat (28) is installed at one end of the lead screw (1), a motor (29) is installed at one end of one group of support seats (28), and the motor (29), a high liquid level sensor 1 (10), a low liquid level sensor 1 (11), a high liquid level sensor 2 (15), a low liquid level sensor 2 (16), a lubricating oil quality sensor (17) and a flow control valve (19) are electrically connected to a controller, and a reverser (30) is installed inside the nut (2).

8. A method for using a high-speed ball screw pair with automatic lubrication function according to any one of claims 1 to 7, characterized in that: The use of high-speed ball screw pair is as follows: S1. When using a high-speed ball screw pair, inject lubricating oil into the main oil storage box (14) through the oil injection pipe (20); S2, the lubricating oil in the main oil storage box (14) flows through the intermediate oil storage box (9) and enters the lubricating sponge (8); S3. The lubricating sponge (8) applies lubricating oil to the outer surface of the ball (3) passing by.

9. The method for using a high-speed ball screw pair with automatic lubrication function according to claim 8, characterized in that: In S1, the following steps are also included: S11, rotating and opening the outer protective plug (26) and the inner protective plug (25), and injecting lubricating oil into the main oil storage box (14) until the second high liquid level sensor (15) detects a liquid level signal; S12, the second high liquid level sensor (15) and the second low liquid level sensor (16) inside the total oil storage box (14) respectively detect the maximum oil storage amount and the minimum oil storage amount inside the total oil storage box (14), and the lubricating oil quality sensor (17) is used to detect the quality of the lubricating oil inside the total oil storage box (14), and transmit the detected information of the quality of the lubricating oil inside the total oil storage box (14), the maximum oil storage amount and the minimum oil storage amount to the controller; In S2, the following steps are also included: S21, adjusting the flow rate of the lubricating oil transported from the main oil storage box (14) to the intermediate oil storage box (9) by adjusting the flow control valve (19) through the controller, and the high liquid level sensor 1 (10) and the low liquid level sensor 1 (11) inside the intermediate oil storage box (9) respectively detect the maximum oil storage amount and the minimum oil storage amount inside the intermediate oil storage box (9), and transmit the detected maximum oil storage amount and minimum oil storage amount information inside the intermediate oil storage box (9) to the controller; S22, the oil storage sponge (12) is used to buffer and store the lubricating oil, and transport the lubricating oil to the lubricating sponge (8) through the oil guide cotton core (13); In S3, the following steps are also included: S31, when the ball (3) passes through the lubricating sponge (8), it exerts pressure on the fixed frame (5). When the pressure sensor (7) detects that the pressure is greater than the standard value, the flow control valve (19) is adjusted by the controller to increase the flow rate of the lubricating oil transported from the main oil storage box (14) to the intermediate oil storage box (9), so that more lubricating oil is applied to the surface of the ball (3); S32. When the pressure sensor (7) detects that the pressure is less than the standard value, the flow control valve (19) is adjusted by the controller to reduce the flow rate of the lubricating oil transported from the main oil storage box (14) to the intermediate oil storage box (9), thereby reducing the lubricating oil applied to the surface of the ball (3).

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