Self-lubricating machine tool ball screw pair with high positioning precision and use method

Abstract

The invention discloses a self-lubricating machine tool ball screw pair high in positioning precision and a using method, and relates to the technical field of machine tool ball screw pairs, the self-lubricating machine tool ball screw pair high in positioning precision comprises a first support, a second support, a fixing cylinder, a first lead screw, a ball nut, a moving channel and a lubricating assembly, and the first lead screw is installed on the outer wall of the first support in a penetrating mode; a fixing cylinder is installed on the outer wall of the first lead screw, and a second support is installed on the outer wall of the fixing cylinder. Lubricating oil in a second box is sucked into a liquid inlet pipe through starting of an installed oil pump, at the moment, pushing force of the lubricating oil drives a plug to move, the plug moves to drive a T-shaped rod to move, the T-shaped rod moves to drive a pulley to move, the pulley moves to enable the T-shaped rod to drive a first spring to move, and the first spring moves to enable the T-shaped rod to drive the plug to move away a blocking ring; toilet lubricating oil enters the moving channel through the liquid inlet pipe to lubricate the balls, and the functions of improving the lubricating efficiency and preventing oil leakage of the machine tool ball screw pair are achieved.

Description

Technical Field

[0001] This invention relates to the field of ball screw pair technology for machine tools, specifically to a self-lubricating ball screw pair for machine tools with high positioning accuracy and its usage method. Background Technology

[0002] Traditional sliding lead screws transmit power through sliding friction, which suffers from problems such as high frictional resistance, low transmission efficiency (only 30%-40%), easy wear, and poor positioning accuracy. In high-speed, high-precision machine tools, the thermal deformation and clearance errors caused by sliding friction significantly reduce machining quality, making it difficult to meet the micron-level precision requirements of modern manufacturing. Ball screws replace sliding friction with rolling friction between the balls and the nut, achieving a significant increase in transmission efficiency (up to 90%-98%) and a significant reduction in frictional resistance. However, existing machine tool ball screw pairs suffer from low automatic lubrication efficiency, prone to oil leakage and poor lubrication, and unstable temperature, which can lead to structural deformation due to machining heat, reducing positioning accuracy.

[0003] The existing defects of ball screw pairs in machine tools are:

[0004] 1. Patent document CN107877236A discloses a ball screw assembly for a gantry CNC machine tool, "including a screw and a screw seat, the screw seat being sleeved on the screw, both ends of the screw seat having protruding bases, the inner side of the base being T-shaped, and a first return spring being provided in the inner cavity of the base, both sides of the screw seat having fixing rings, the fixing rings having a threaded ring protruding on the side near the screw seat, which can greatly reduce the accumulation of dust on the screw while ensuring the efficient function of lubricating oil, ensuring the stable operation of the device, and the designed wedge-shaped scraper can effectively remove oil stains falling on the screw and then discharge them through the drain hole, greatly reducing the generation of friction and effectively improving the overall service life of the device." However, the existing machine tool ball screw assemblies have low automatic lubrication efficiency, are prone to oil leakage, and have poor lubrication effect.

[0005] 2. Patent document CN106624953B discloses a pre-tensioning structure and method for a ball screw pair in a CNC machine tool. "The ZARN combined bearing at the servo feed motor end is the fixed end, and the tapered roller bearing and deep groove ball bearing at the other end are the tensioning end. The ball screw pair is pre-tensioned by rotating the nut. The amount of tension is equal to the difference between the reading of the dial indicator at the tensioning end and the reading of the dial indicator at the fixed end. This eliminates the thermal deformation during the operation of the screw in advance, reduces and eliminates the impact of machine tool thermal deformation on machine tool accuracy, and improves the support rigidity of the ball screw mechanism, which is beneficial to the improvement of operating accuracy, transmission system stability, vibration resistance and service life." However, the temperature of the existing machine tool ball screw pair is unstable and the structural deformation caused by processing heat is prone to reduce positioning accuracy.

[0006] 3. Patent document CN109916542B discloses a handheld online measuring device and method for the friction torque of ball screw pairs in machine tools. "The device includes a friction torque sensor for measuring the friction torque of the ball screw pair, a screw anti-rotation device for preventing the ball screw pair from rotating, and a handle for connecting the friction torque sensor and the screw anti-rotation device; the screw anti-rotation device has a U-shaped structure, allowing assembly without disassembling the ball screw pair to be measured. This invention, a handheld online measuring device and method for the friction torque of ball screw pairs in machine tools, solves the problem of not being able to measure the friction torque of ball screw pairs on machine tools, filling the industry gap in online measuring devices and methods for the friction torque of ball screw pairs. The device is small in size and the method is simple and easy to implement, improving the accuracy and efficiency of measuring the friction torque of ball screw pairs." However, existing machine tool ball screw pairs cannot be quickly disassembled and assembled, increasing manual labor.

[0007] 4. Patent document CN203449006U discloses a ball screw pair support structure for a combination machine tool. The paper states that "the ball screw pair in the combination machine tool's ball screw pair support structure suffers from uneven force distribution, resulting in poor balance of the machine tool's slide operation, thus affecting the stability of machine tool processing and reducing product processing quality." This utility model proposes a ball screw pair support structure for a combination machine tool, including a servo motor, a ball screw pair, and a base. A right support is provided at the right end of the ball screw pair near the servo motor, and a left support is provided at the left end of the ball screw pair. The support, specifically the left support, includes a base boss, a mounting platform, a left support bearing, and a left end cap. The beneficial effect of this utility model's combined machine tool ball screw pair support structure is that the support structures at both ends of the ball screw pair result in more even force distribution. The rubber rings and gaskets in the support structure buffer the ball screw pair, thus making the worktable run more precisely and balanced, leading to higher machining quality and more stable performance. However, existing machine tool ball screw pairs cannot automatically remove stains, reducing the operational stability of the ball screw pair. Summary of the Invention

[0008] The purpose of this invention is to provide a self-lubricating ball screw pair for machine tools with high positioning accuracy and a method for using it, so as to solve the technical problems mentioned in the background art, such as low automatic lubrication efficiency of machine tool ball screw pairs, easy oil leakage, poor lubrication effect, and easy structural deformation due to processing heat, which reduces positioning accuracy.

[0009] To achieve the above objectives, the present invention provides the following technical solution: a self-lubricating ball screw pair for machine tools with high positioning accuracy, comprising a first support, a second support, a fixed cylinder, a first screw, a ball nut, a moving track, and a lubrication assembly. The first screw is installed through the outer wall of the first support, the fixed cylinder is installed on the outer wall of the first screw, the second support is installed on the outer wall of the fixed cylinder, the ball nut is installed on the outer wall of the first screw, the moving track is formed on the inner wall of the ball nut, the lubrication assembly is installed at the bottom of the ball nut, the accuracy protection assembly is installed on the inner wall of the ball nut, and the output end of a servo motor is installed through the inner wall of the fixed cylinder.

[0010] The lubrication assembly includes a first tank, a second tank, an inlet head, an oil pump, an inlet pipe, and a plug. The first tank is located at the bottom of the ball nut, and the second tank is located on the inner wall of the first tank. The inlet head penetrates through the outer walls of both the second and first tanks. The oil pump penetrates through the outer wall of the second tank. The inlet pipe is located at the output end of the oil pump, and one end of the inlet pipe extends to the inner wall of the moving channel. A plugging ring is installed on the inner wall of the inlet pipe, and a first slide is installed on the outer wall of the plugging ring. A pulley is installed on the inner wall of the first slide, and a T-shaped rod is installed on the outer wall of the pulley. One end of the T-shaped rod is connected to the outer wall of the plug, and a first spring is installed on the outer wall of the T-shaped rod, with one end of the first spring connected to the outer wall of the plugging ring.

[0011] Preferably, the plug and the plug ring seal the inlet pipe, and the pulley moves by means of the support of the first slide.

[0012] Preferably, the precision protection component includes a temperature sensor and a processing module. The temperature sensor is located on the inner wall of the ball nut, and the processing module is located on the inner wall of the ball nut. The processing module is electrically connected to the temperature sensor and to the lubrication component. The temperature sensor is used to detect real-time temperature data inside the ball nut, and the processing module has built-in suitable temperature data inside the ball nut, with the suitable temperature being 40~50℃.

[0013] Preferably, the real-time temperature data inside the ball nut is transmitted to the processing module. The processing module compares the real-time temperature data inside the ball nut with the suitable temperature data inside the ball nut. If the real-time temperature data inside the ball nut is greater than the suitable temperature data, it is set to a high temperature state. If the real-time temperature data inside the ball nut is less than the suitable temperature data, it is set to a low temperature state. If the real-time temperature data inside the ball nut is within the suitable temperature data, it is set to a suitable temperature state.

[0014] Preferably, a quick-fixing component is installed through the outer wall of the fixed cylinder, and a scraping component is installed on the outer wall of the ball nut.

[0015] Preferably, the quick-fixing assembly includes a fourth box, a first motor, a third cylinder, and a fifth spring. The fourth box is located on the outer wall of the fixing cylinder, the first motor is located on the inner wall of the fourth box, a winding wheel is installed at the output end of the first motor, a pull rope is installed on the outer wall of the winding wheel, and slots are provided on the output end of the servo motor and the outer wall of the first lead screw. The third cylinder passes through the outer walls of the fixing cylinder and the fourth box, a T-shaped clamp is installed through the inner wall of the third cylinder, a fifth spring is installed on the outer wall of the T-shaped clamp, and one end of the fifth spring is connected to the inner wall of the fourth box. One end of the pull rope is connected to the outer wall of the T-shaped clamp. A second slide rod is installed on the inner wall of the fourth box, a second slide cylinder is installed on the outer wall of the second slide rod, and the outer wall of the T-shaped clamp is connected to the outer wall of the second slide cylinder.

[0016] Preferably, the T-shaped card head is inserted into the card slot, and the second slide cylinder moves under the support of the second slide rod.

[0017] Preferably, the scraping assembly includes a No. 6 box, a support block, a scraping pad, a T-shaped head, an electromagnetic block, and a No. 7 spring. The No. 6 box is located on the outer wall of the ball nut. The inner wall of the No. 6 box is fitted with a No. 8 box. The inner wall of the No. 8 box is fitted with a No. 5 slide rod. The outer wall of the No. 5 slide rod is fitted with a No. 5 slide cylinder. The outer wall of the No. 5 slide cylinder is fitted with a T-shaped head. The scraping pad extends through the bottom of the No. 6 box. The outer wall of the scraping pad is fitted with a support block. The outer wall of the support block is fitted with a No. 5 groove. One end of the T-shaped head extends to the inner wall of the No. 5 groove. The outer wall of the T-shaped head is fitted with a No. 7 spring, and one end of the No. 7 spring is connected to the inner wall of the No. 8 box. The inner wall of the No. 8 box is fitted with a No. 9 cylinder. The inner wall of the No. 9 cylinder is fitted with an electromagnetic block. The outer wall of the electromagnetic block is fitted with a No. 8 spring. The outer wall of the No. 8 spring is fitted with a connecting rod, and one end of the connecting rod is connected to the outer wall of the T-shaped head.

[0018] Preferably, the sixth box is circular, the fifth slide cylinder moves with the support of the fifth slide rod, and the support block and scraping pad can be pulled out from the inner wall of the sixth box.

[0019] Preferably, the method of using this ball screw assembly includes the following steps:

[0020] Step S1: Open the inlet head and inject lubricating oil into the No. 2 tank. The oil pump starts and draws the lubricating oil from the No. 2 tank into the inlet pipe. At this time, the driving force of the lubricating oil drives the plug to move. The movement of the plug drives the T-shaped rod to move. The movement of the T-shaped rod drives the pulley to move. The movement of the pulley causes the T-shaped rod to drive the No. 1 spring to move. The movement of the No. 1 spring causes the T-shaped rod to drive the plug to move away from the plug ring. The lubricating oil enters the moving channel through the inlet pipe to lubricate the ball bearings, thus realizing the function of improving the lubrication efficiency of the machine tool ball screw pair and preventing easy oil leakage.

[0021] Step S2: When the processing module detects a high temperature, it controls the lubrication component to start. After the lubrication component starts, the temperature sensor continuously monitors the real-time temperature data inside the ball nut until the processing module detects a low temperature or a suitable temperature. When the processing module detects a low temperature, it controls the lubrication component to stop starting. After the lubrication component stops starting, the temperature sensor continues to monitor the real-time temperature data inside the ball nut until the processing module detects a high temperature. This achieves the function of stabilizing the temperature of the ball screw pair, preventing structural deformation caused by processing heat, and improving positioning accuracy.

[0022] Step S3: The rotation of motor No. 1 drives the winding wheel to rotate, which in turn drives the pull rope to move. The movement of the pull rope drives the T-shaped chuck to move, which in turn drives the second slide cylinder to move. The movement of the second slide cylinder causes the T-shaped chuck to drive the fifth spring to move, and the movement of the fifth spring causes the T-shaped chuck to move out of the slot through the third cylinder. At this time, the output end of the servo motor or the first lead screw is pulled to move it out of the fixed cylinder, thus realizing the function of quick disassembly and assembly of the machine tool ball screw pair and reducing manual labor.

[0023] Step S4: The servo motor rotates, causing the fixed cylinder to rotate. The fixed cylinder rotates, causing the No. 1 lead screw to rotate. The No. 1 lead screw rotates, causing the ball nut to move. The ball nut moves, causing the No. 6 box to move. The No. 6 box moves, causing the scraping pad to move. The scraping pad scrapes away the dirt on the surface of the No. 1 lead screw. The electromagnetic block is activated, generating magnetic force that moves the connecting rod. The connecting rod moves, causing the No. 8 spring to move. The No. 8 spring moves, causing the connecting rod to move the T-head. The T-head moves, causing the No. 5 slide cylinder to move. The No. 5 slide cylinder moves, causing the T-head to move out of the No. 5 slot. At this time, the scraping pad is pulled, causing the support block to move. The support block moves, allowing it to be moved out of the No. 6 box as a whole for easy replacement. This achieves the function of automatically scraping away dirt on the surface of the machine tool ball screw pair and improving the running stability of the machine tool ball screw pair.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] 1. This invention involves installing an inlet head to inject lubricating oil into a second tank. The oil pump then draws the lubricating oil from the second tank into the inlet pipe. The force of the lubricating oil causes the plug to move, which in turn moves the T-shaped rod. The T-shaped rod then moves the pulley, which in turn moves the T-shaped rod and the first spring. The first spring then moves the T-shaped rod, causing the plug to move away from the sealing ring. The lubricating oil then enters the moving channel through the inlet pipe to lubricate the ball bearings, thus improving the lubrication efficiency of the machine tool ball screw assembly and preventing oil leakage.

[0026] 2. This invention, through the installation of a processing module, detects a high temperature state and controls the lubrication component to start. After the lubrication component starts, the temperature sensor continuously monitors the real-time temperature data inside the ball nut until the processing module detects a low temperature state or a suitable temperature state. When the processing module detects a low temperature state, it controls the lubrication component to stop starting. After the lubrication component stops starting, the temperature sensor continues to monitor the real-time temperature data inside the ball nut until the processing module detects a high temperature state. When the processing module detects a high temperature state, it controls the lubrication component to stop starting. After the lubrication component stops starting, the temperature sensor continues to monitor the real-time temperature data inside the ball nut until the processing module detects a high temperature state. This achieves the function of stabilizing the temperature of the ball screw pair, preventing structural deformation caused by processing heat, and improving positioning accuracy.

[0027] 3. This invention utilizes a first motor to drive a winding wheel, which in turn moves a pull rope, which in turn moves a T-shaped chuck, which in turn moves a second slide cylinder, which in turn moves a fifth spring, which in turn moves the T-shaped chuck out of its slot via a third cylinder. At this point, the output of the servo motor or the first lead screw is pulled to move it out of the fixed cylinder, thus achieving the function of quick assembly and disassembly of the ball screw pair of the machine tool, reducing manual labor.

[0028] 4. This invention utilizes a servo motor to rotate a fixed cylinder, which in turn rotates a lead screw. The rotation of the lead screw causes the ball nut to move, which in turn moves a housing (box number six). This movement of the housing moves a scraping pad, which removes dirt from the surface of the lead screw. An electromagnetic block activates, generating magnetic force that moves a connecting rod. This moving rod then moves a spring (box number eight), which in turn moves a T-shaped head. The T-shaped head moves a sliding cylinder (box number five), causing the T-shaped head to move out of its slot. At this point, the scraping pad is pulled, moving a support block. This movement allows the support block to be moved out of the housing (box number six) for easy replacement. This invention achieves the function of automatically scraping dirt from the surface of the ball screw assembly, improving the operational stability of the ball screw assembly. Attached Figure Description

[0029] Figure 1 This is a front view structural diagram of the present invention;

[0030] Figure 2 This is a schematic diagram of the cross-sectional structure of the ball nut of the present invention;

[0031] Figure 3 This is a schematic diagram of the liquid inlet pipe structure of the present invention;

[0032] Figure 4 For the present invention Figure 3 A schematic diagram of the B structure;

[0033] Figure 5 For the present invention Figure 2 A schematic diagram of structure A;

[0034] Figure 6 This is a schematic diagram of the temperature control process of the present invention;

[0035] Figure 7 This is a schematic diagram of the fourth box structure of the present invention;

[0036] Figure 8 This is a schematic diagram of the T-shaped card head of the present invention;

[0037] Figure 9 This is a schematic diagram of the scraping pad structure of the present invention;

[0038] Figure 10 For the present invention Figure 9 A schematic diagram of the C-structure.

[0039] In the diagram: 1. Support No. 1; 2. Support No. 2; 3. Fixed cylinder; 4. Lead screw No. 1; 5. Ball nut; 6. Box No. 6; 7. Moving track; 8. Box No. 1; 9. Box No. 2; 10. Oil pump; 11. Inlet pipe; 12. Plug ring; 13. Slide No. 1; 14. Pulley; 15. Spring No. 1; 16. T-bar; 17. Plug; 18. Temperature sensor; 19. Box No. 4; 20. Motor No. 1; 21. Winding reel; 2 2. Pull rope; 23. No. 2 slide rod; 24. No. 2 slide cylinder; 25. No. 5 spring; 26. No. 3 cylinder; 27. T-shaped clamp; 28. Support block; 29. ​​Scraper pad; 30. No. 8 box; 31. No. 5 slide rod; 32. No. 5 slide cylinder; 33. No. 7 spring; 34. T-shaped head; 35. Connecting rod; 36. No. 9 cylinder; 37. Electromagnetic block; 38. No. 8 spring; 39. No. 5 groove; 40. Servo motor; 41. Liquid inlet head. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0042] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" 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 an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand this according to the specific circumstances.

[0043] Example 1: Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4This invention provides an embodiment of a self-lubricating ball screw assembly for machine tools with high positioning accuracy, comprising a first support 1, a second support 2, a fixed cylinder 3, a first screw 4, a ball nut 5, a moving track 7, and a lubrication component. The first screw 4 is installed through the outer wall of the first support 1. The fixed cylinder 3 is installed on the outer wall of the first screw 4. The second support 2 is installed on the outer wall of the fixed cylinder 3. The ball nut 5 is installed on the outer wall of the first screw 4. A moving track 7 is formed on the inner wall of the ball nut 5. A lubrication component is installed at the bottom of the ball nut 5. A lubrication component is installed on the inner wall of the ball nut 5. A quick-fixing assembly is installed through the outer wall of the fixed cylinder 3, and a scraping assembly is installed on the outer wall of the ball nut 5. Support 1 and support 2 are connected to the machine tool surface. The lubrication assembly includes a first box 8, a second box 9, an inlet head 41, an oil pump 10, an inlet pipe 11, and a plug 17. The first box 8 is located at the bottom of the ball nut 5, and the second box 9 is located on the inner wall of the first box 8. The inlet head 41 penetrates the outer walls of the second box 9 and the first box 8. The oil pump 10 penetrates the outer wall of the second box 9, and the inlet pipe 11 is located at the output end of the oil pump 10, with one end of the inlet pipe 11 extending... The inlet pipe 11 extends to the inner wall of the moving channel 7. A plugging ring 12 is installed on the inner wall of the inlet pipe 11. A first slide 13 is installed on the outer wall of the plugging ring 12. A pulley 14 is installed on the inner wall of the first slide 13. A T-shaped rod 16 is installed on the outer wall of the pulley 14. One end of the T-shaped rod 16 is connected to the outer wall of the plug 17. A first spring 15 is installed on the outer wall of the T-shaped rod 16, and one end of the first spring 15 is connected to the outer wall of the plugging ring 12. The plug 17, in conjunction with the plugging ring 12, seals the inlet pipe 11. The pulley 14 moves under the support of the first slide 13. The inlet head 41 is opened to allow lubricating oil to flow in. When the lubricating oil is injected into the No. 2 tank 9, the oil pump 10 starts and draws the lubricating oil from the No. 2 tank 9 into the inlet pipe 11. At this time, the driving force of the lubricating oil drives the plug 17 to move. The movement of the plug 17 drives the T-shaped rod 16 to move. The movement of the T-shaped rod 16 drives the pulley 14 to move. The movement of the pulley 14 causes the T-shaped rod 16 to drive the No. 1 spring 15 to move. The movement of the No. 1 spring 15 causes the T-shaped rod 16 to drive the plug 17 to move away from the plug ring 12. The lubricating oil enters the moving channel 7 through the inlet pipe 11 to lubricate the ball screw, thus realizing the function of improving the lubrication efficiency of the machine tool ball screw pair and preventing easy oil leakage.

[0044] Example 2: Please refer to Figure 2 , Figure 5 and Figure 6An embodiment of the present invention provides a precision protection component including a temperature sensor 18 and a processing module. The temperature sensor 18 is located on the inner wall of the ball nut 5, and the processing module is also located on the inner wall of the ball nut 5. The processing module is electrically connected to the temperature sensor 18 and to the lubrication component. The temperature sensor 18 is used to detect real-time temperature data within the ball nut 5. The processing module stores suitable temperature data within the ball nut 5, which is 40~50℃. The real-time temperature data within the ball nut 5 is transmitted to the processing module. The processing module compares the real-time temperature data within the ball nut 5 with the suitable temperature data within the ball nut 5. If the real-time temperature data within the ball nut 5 is greater than the suitable temperature data, the temperature is set to a high state; if the real-time temperature data within the ball nut 5 is less than the suitable temperature data, the temperature is set to a low state. When the temperature data within the ball nut 5 is at a suitable temperature, the processing module detects a high temperature and controls the lubrication component to start. After the lubrication component starts, the temperature sensor 18 continuously monitors the real-time temperature data within the ball nut 5 until the processing module detects a low temperature or a suitable temperature. When the processing module detects a low temperature, it controls the lubrication component to stop starting. After the lubrication component stops starting, the temperature sensor 18 continues to monitor the real-time temperature data within the ball nut 5 until the processing module detects a high temperature. This achieves the function of stabilizing the temperature of the ball screw pair, preventing structural deformation caused by processing heat, and improving positioning accuracy.

[0045] Example 3: Please refer to Figure 1 , Figure 7 and Figure 8One embodiment of the present invention provides a quick-fixing assembly comprising a fourth box 19, a first motor 20, a third cylinder 26, and a fifth spring 25. The fourth box 19 is located on the outer wall of the fixing cylinder 3, and the first motor 20 is located on the inner wall of the fourth box 19. A winding wheel 21 is installed at the output end of the first motor 20, and a pull rope 22 is installed on the outer wall of the winding wheel 21. Slots are provided at the output end of the servo motor 40 and on the outer wall of the first lead screw 4. The third cylinder 26 penetrates the outer walls of the fixing cylinder 3 and the fourth box 19. A T-shaped clamp 27 is installed through the inner wall of the third cylinder 26. A fifth spring 25 is installed on the outer wall of the T-shaped clamp 27, and one end of the fifth spring 25 is connected to the inner wall of the fourth box 19. One end of the pull rope 22 is connected to the outer wall of the T-shaped clamp 27. A second spring 25 is installed on the inner wall of the fourth box 19. The outer wall of slide rod 23 is fitted with slide cylinder 24, and the outer wall of T-shaped chuck 27 is connected to the outer wall of slide cylinder 24. T-shaped chuck 27 is inserted into the slot. Slide cylinder 24 moves with the support of slide rod 23. Motor 20 rotates, driving take-up wheel 21 to rotate. Take-up wheel 21 rotates, driving pull rope 22 to move. Pull rope 22 moves, driving T-shaped chuck 27 to move. T-shaped chuck 27 moves, driving slide cylinder 24 to move. Slide cylinder 24 moves, causing T-shaped chuck 27 to move, driving spring 25 to move. Spring 25 moves, causing T-shaped chuck 27 to move out of slot through cylinder 26. At this time, the output end of servo motor 40 or lead screw 4 is pulled to move it out of fixed cylinder 3, realizing the function of quick disassembly and assembly of machine tool ball screw pair and reducing manual labor.

[0046] Example 4: Please refer to Figure 1 , Figure 2 , Figure 9 and Figure 10One embodiment of the present invention provides a scraping assembly comprising a sixth box 6, a support block 28, a scraping pad 29, a T-shaped head 34, an electromagnetic block 37, and a seventh spring 33. The sixth box 6 is located on the outer wall of the ball nut 5. An eighth box 30 is installed on the inner wall of the sixth box 6. A fifth sliding rod 31 is installed on the inner wall of the eighth box 30. A fifth sliding cylinder 32 is installed on the outer wall of the fifth sliding rod 31. A T-shaped head 34 is installed on the outer wall of the fifth sliding cylinder 32. The scraping pad 29 penetrates the bottom of the sixth box 6. A support block 28 is installed on the outer wall of the scraping pad 29. Support block 28 has a No. 5 slot 39 installed on its outer wall. One end of T-shaped head 34 extends to the inner wall of slot 39. A No. 7 spring 33 is installed on the outer wall of T-shaped head 34, and one end of spring 33 is connected to the inner wall of box 30. A No. 9 cylinder 36 is installed on the inner wall of box 30. An electromagnetic block 37 is installed on the inner wall of cylinder 36. A No. 8 spring 38 is installed on the outer wall of electromagnetic block 37. A connecting rod 35 is installed on the outer wall of spring 38, and one end of connecting rod 35 is connected to the outer wall of T-shaped head 34. The connection is as follows: Box 6 is circular. Slide cylinder 32 moves via slide rod 31. Support block 28 and scraping pad 29 can be pulled out from the inner wall of box 6. Servo motor 40 rotates, driving fixed cylinder 3 to rotate. Fixed cylinder 3 rotates, driving lead screw 4 to rotate. Lead screw 4 rotates, causing ball nut 5 to move. Ball nut 5 moves, driving box 6 to move. Box 6 moves, driving scraping pad 29 to move. Scraping pad 29 scrapes away dirt from the surface of lead screw 4. Electromagnetic block 37 is activated to generate magnetic force. The connecting rod 35 moves, which in turn moves the No. 8 spring 38. The movement of the No. 8 spring 38 causes the connecting rod 35 to move the T-shaped head 34. The movement of the T-shaped head 34 causes the No. 5 slide cylinder 32 to move. The movement of the No. 5 slide cylinder 32 causes the T-shaped head 34 to move out of the No. 5 slot 39. At this time, the scraping pad 29 is pulled, which moves the support block 28. The movement of the support block 28 causes it to move out of the No. 6 box 6 as a whole for easy replacement. This realizes the function of automatically scraping the stains on the surface of the ball screw pair of the machine tool and improving the running stability of the ball screw pair of the machine tool.

[0047] The usage of this ball screw assembly includes the following steps:

[0048] Step S1: Open the inlet head 41 to inject lubricating oil into the second tank 9. The oil pump 10 starts to draw the lubricating oil in the second tank 9 into the inlet pipe 11. At this time, the driving force of the lubricating oil drives the plug 17 to move. The movement of the plug 17 drives the T-shaped rod 16 to move. The movement of the T-shaped rod 16 drives the pulley 14 to move. The movement of the pulley 14 causes the T-shaped rod 16 to drive the first spring 15 to move. The movement of the first spring 15 causes the T-shaped rod 16 to drive the plug 17 to move away from the blocking ring 12. The toilet lubricating oil enters the moving channel 7 through the inlet pipe 11 to lubricate the ball screw, realizing the function of improving the lubrication efficiency of the machine tool ball screw pair and preventing easy oil leakage.

[0049] Step S2: When the processing module detects a high temperature, it controls the lubrication component to start. After the lubrication component starts, the temperature sensor 18 continuously monitors the real-time temperature data inside the ball nut 5 until the processing module detects a low temperature or a suitable temperature. When the processing module detects a low temperature, it controls the lubrication component to stop starting. After the lubrication component stops starting, the temperature sensor 18 continues to monitor the real-time temperature data inside the ball nut 5 until the processing module detects a high temperature. This achieves the function of stabilizing the temperature of the ball screw pair, preventing structural deformation caused by processing heat, and improving positioning accuracy.

[0050] Step S3: The rotation of motor 20 drives the winding wheel 21 to rotate, which in turn drives the pull rope 22 to move. The movement of the pull rope 22 drives the T-shaped chuck 27 to move, which in turn drives the second slide cylinder 24 to move. The movement of the second slide cylinder 24 causes the T-shaped chuck 27 to move the fifth spring 25. The movement of the fifth spring 25 causes the T-shaped chuck 27 to move out of the slot through the third cylinder 26. At this time, the output end of the servo motor 40 or the first lead screw 4 is pulled to move it out of the fixed cylinder 3, thus realizing the function of quick disassembly and assembly of the machine tool ball screw pair and reducing manual labor.

[0051] Step S4: The servo motor 40 rotates, driving the fixed cylinder 3 to rotate. The fixed cylinder 3 rotates, driving the first lead screw 4 to rotate. The first lead screw 4 rotates, causing the ball nut 5 to move. The ball nut 5 moves, driving the sixth box 6 to move. The sixth box 6 moves, driving the scraping pad 29 to move. The scraping pad 29 scrapes away the dirt on the surface of the first lead screw 4. The electromagnetic block 37 is activated, generating magnetic force to drive the connecting rod 35 to move. The connecting rod 35 moves, driving the eighth spring 38 to move. The eighth spring 38 moves, causing the connecting rod 35 to drive the T-head 34 to move. The T-head 34 moves, driving the fifth slide cylinder 32 to move. The fifth slide cylinder 32 moves, causing the T-head 34 to move out of the fifth slot 39. At this time, the scraping pad 29 is pulled, driving the support block 28 to move. The support block 28 moves, allowing it to be moved out of the sixth box 6 as a whole for easy replacement. This realizes the function of automatically scraping away the dirt on the surface of the machine tool ball screw pair and improving the running stability of the machine tool ball screw pair.

[0052] Working principle: Opening the inlet head 41 injects lubricating oil into the second tank 9. The oil pump 10 starts, drawing the lubricating oil from the second tank 9 into the inlet pipe 11. The force of the lubricating oil then moves the plug 17, which in turn moves the T-shaped rod 16. The T-shaped rod 16 then moves the pulley 14, which in turn moves the T-shaped rod 16, which in turn moves the first spring 15. The first spring 15 then moves the T-shaped rod 16, causing the plug 17 to move away from the blocking ring 12. The lubricating oil then enters the moving channel 7 through the inlet pipe 11 to lubricate the balls, thus improving the lubrication efficiency of the machine tool ball screw pair and preventing oil leakage. When the processing module detects a high temperature, it controls the lubrication assembly to start. After startup, temperature sensor 18 continuously monitors the real-time temperature data inside ball nut 5 until the processing module detects a low or suitable temperature. If the processing module detects a low temperature, it controls the lubrication assembly to remain off. After the lubrication assembly is off, temperature sensor 18 continues to monitor the real-time temperature data inside ball nut 5 until the processing module detects a high temperature. This process stabilizes the temperature of the ball screw assembly, preventing structural deformation due to processing heat and improving positioning accuracy. The function is as follows: the rotation of motor 20 drives the winding wheel 21 to rotate, which in turn moves the pull rope 22. The movement of the pull rope 22 moves the T-shaped chuck 27, which in turn moves the second slide cylinder 24. The movement of the second slide cylinder 24 causes the T-shaped chuck 27 to move the fifth spring 25. The movement of the fifth spring 25 causes the T-shaped chuck 27 to move out of the slot through the third cylinder 26. At this time, the output end of the servo motor 40 or the first lead screw 4 is pulled to move it out of the fixed cylinder 3, realizing the function of quick disassembly and assembly of the ball screw pair of the machine tool, reducing manual labor. The rotation of servo motor 40 drives the fixed cylinder 3 to rotate, which in turn drives the first lead screw 4 to rotate, which in turn moves the ball nut 5. The movement of ball nut 5 moves the sixth box 6, which in turn moves the scraping pad 29. The scraping pad 29 scrapes away the dirt on the surface of the first lead screw 4. The electromagnetic block 37 is activated, generating magnetic force that moves the connecting rod 35. The connecting rod 35 moves the eighth spring 38, which in turn moves the connecting rod 35, which in turn moves the T-head 34. The T-head 34 moves the fifth slide cylinder 32, which moves the T-head 34 out of the fifth slot 39. At this time, the scraping pad 29 is pulled, which moves the support block 28. The support block 28 moves out of the sixth box 6 as a whole for easy replacement. This achieves the function of automatically scraping away dirt on the surface of the machine tool ball screw pair and improving the running stability of the machine tool ball screw pair.

[0053] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A self-lubricating ball screw pair for machine tools with high positioning accuracy, comprising a first support (1), a second support (2), a fixed cylinder (3), a first screw (4), a ball nut (5), a moving track (7), and a lubrication assembly, characterized in that: A first lead screw (4) is installed through the outer wall of the first support (1). A fixed cylinder (3) is installed on the outer wall of the first lead screw (4). A second support (2) is installed on the outer wall of the fixed cylinder (3). A ball nut (5) is installed on the outer wall of the first lead screw (4). A moving track (7) is opened on the inner wall of the ball nut (5). A lubrication component is installed at the bottom of the ball nut (5). A precision protection component is installed on the inner wall of the ball nut (5). The output end of a servo motor (40) is installed through the inner wall of the fixed cylinder (3). The lubrication assembly includes a first tank (8), a second tank (9), an inlet head (41), an oil pump (10), an inlet pipe (11), and a plug (17). The first tank (8) is located at the bottom of the ball nut (5), the second tank (9) is located on the inner wall of the first tank (8), the inlet head (41) penetrates through the outer walls of the second tank (9) and the first tank (8), the oil pump (10) penetrates through the outer wall of the second tank (9), and the inlet pipe (11) is located at the output end of the oil pump (10), with one end of the inlet pipe (11) extending to the outlet. The inner wall of the moving channel (7) is fitted with a plug ring (12), the outer wall of the plug ring (12) is fitted with a first slide (13), the inner wall of the first slide (13) is fitted with a pulley (14), the outer wall of the pulley (14) is fitted with a T-shaped rod (16), one end of the T-shaped rod (16) is connected to the outer wall of the plug (17), the outer wall of the T-shaped rod (16) is fitted with a first spring (15), and one end of the first spring (15) is connected to the outer wall of the plug ring (12).

2. The self-lubricating ball screw pair for machine tools with high positioning accuracy according to claim 1, characterized in that: The plug (17) and the plug ring (12) seal the inlet pipe (11), and the pulley (14) moves by means of the support of the first slide (13).

3. The self-lubricating ball screw pair for machine tools with high positioning accuracy according to claim 1, characterized in that: The precision protection component includes a temperature sensor (18) and a processing module. The temperature sensor (18) is located on the inner wall of the ball nut (5), and the processing module is located on the inner wall of the ball nut (5). The processing module is electrically connected to the temperature sensor (18) and to the lubrication component. The temperature sensor (18) is used to detect real-time temperature data inside the ball nut (5). The processing module has built-in suitable temperature data inside the ball nut (5), and the suitable temperature is 40~50℃.

4. The self-lubricating ball screw pair for machine tools with high positioning accuracy according to claim 3, characterized in that: The real-time temperature data inside the ball nut (5) is transmitted to the processing module. The processing module compares the real-time temperature data inside the ball nut (5) with the suitable temperature data inside the ball nut (5). If the real-time temperature data inside the ball nut (5) is greater than the suitable temperature data inside the ball nut (5), it is set to a high temperature state. If the real-time temperature data inside the ball nut (5) is less than the suitable temperature data inside the ball nut (5), it is set to a low temperature state. If the real-time temperature data inside the ball nut (5) is within the suitable temperature data inside the ball nut (5), it is set to a suitable temperature state.

5. A self-lubricating ball screw pair for machine tools with high positioning accuracy according to claim 1, characterized in that: A quick-fixing assembly is installed through the outer wall of the fixed cylinder (3), and a scraping assembly is installed on the outer wall of the ball nut (5).

6. A self-lubricating ball screw pair for machine tools with high positioning accuracy according to claim 5, characterized in that: The quick-fixing assembly includes a fourth box (19), a first motor (20), a third cylinder (26), and a fifth spring (25). The fourth box (19) is located on the outer wall of the fixed cylinder (3), and the first motor (20) is located on the inner wall of the fourth box (19). A winding wheel (21) is installed at the output end of the first motor (20), and a pull rope (22) is installed on the outer wall of the winding wheel (21). The output end of the servo motor (40) and the outer wall of the first lead screw (4) are both provided with slots. The third cylinder (26) passes through the fixed cylinder (3) and the fourth cylinder (25). The outer wall of box (19) and the inner wall of cylinder (26) are connected by a T-shaped clamp (27). The outer wall of the T-shaped clamp (27) is connected by a No. 5 spring (25), and one end of the No. 5 spring (25) is connected to the inner wall of box (19). One end of the pull rope (22) is connected to the outer wall of the T-shaped clamp (27). The inner wall of box (19) is connected by a No. 2 slide rod (23). The outer wall of the No. 2 slide rod (23) is connected by a No. 2 slide cylinder (24), and the outer wall of the T-shaped clamp (27) is connected to the outer wall of the No. 2 slide cylinder (24).

7. A self-lubricating ball screw pair for machine tools with high positioning accuracy according to claim 6, characterized in that: The T-shaped clip (27) is inserted into the slot, and the second slide cylinder (24) moves by the support of the second slide rod (23).

8. A self-lubricating ball screw pair for machine tools with high positioning accuracy according to claim 5, characterized in that: The scraping assembly includes a sixth box (6), a support block (28), a scraping pad (29), a T-shaped head (34), an electromagnetic block (37), and a seventh spring (33). The sixth box (6) is located on the outer wall of the ball nut (5). An eighth box (30) is installed on the inner wall of the sixth box (6). A fifth slide rod (31) is installed on the inner wall of the eighth box (30). A fifth slide cylinder (32) is installed on the outer wall of the fifth slide rod (31). A T-shaped head (34) is installed on the outer wall of the fifth slide cylinder (32). The scraping pad (29) extends through the bottom of the sixth box (6). A support block (28) is installed on the outer wall of the scraping pad (29). The outer wall of the support block (28) is fitted with a No. 5 groove (39), one end of the T-shaped head (34) extends to the inner wall of the No. 5 groove (39), the outer wall of the T-shaped head (34) is fitted with a No. 7 spring (33), and one end of the No. 7 spring (33) is connected to the inner wall of the No. 8 box (30), the inner wall of the No. 8 box (30) is fitted with a No. 9 cylinder (36), the inner wall of the No. 9 cylinder (36) is fitted with an electromagnetic block (37), the outer wall of the electromagnetic block (37) is fitted with a No. 8 spring (38), the outer wall of the No. 8 spring (38) is fitted with a connecting rod (35), and one end of the connecting rod (35) is connected to the outer wall of the T-shaped head (34).

9. A self-lubricating ball screw pair for machine tools with high positioning accuracy according to claim 8, characterized in that: The sixth box (6) is circular, and the fifth slide cylinder (32) moves by the support of the fifth slide rod (31). The support block (28) and the scraping pad (29) can be pulled out from the inner wall of the sixth box (6).

10. A method for using a self-lubricating ball screw pair for a machine tool with high positioning accuracy, applicable to the self-lubricating ball screw pair for a machine tool with high positioning accuracy as described in any one of claims 1-9, characterized in that... The usage of this ball screw assembly includes the following steps: Step S1: The driving force of the lubricating oil drives the plug (17) to move. The movement of the plug (17) drives the T-shaped rod (16) to move. The movement of the T-shaped rod (16) drives the pulley (14) to move. The movement of the pulley (14) causes the T-shaped rod (16) to drive the first spring (15) to move. The movement of the first spring (15) causes the T-shaped rod (16) to drive the plug (17) to move away from the plug ring (12). The toilet lubricating oil enters the moving channel (7) through the liquid inlet pipe (11) to lubricate the ball. Step S2: When the processing module detects a high temperature, it controls the lubrication component to start. After the lubrication component starts, the temperature sensor (18) continuously monitors the real-time temperature data inside the ball nut (5) until the processing module detects a low temperature or a suitable temperature. When the processing module detects a low temperature, it controls the lubrication component to stop starting. After the lubrication component stops starting, the temperature sensor (18) continuously monitors the real-time temperature data inside the ball nut (5) until the processing module detects a high temperature. When the processing module detects a high temperature, it controls the lubrication component to stop starting. After the lubrication component stops starting, the temperature sensor (18) continuously monitors the real-time temperature data inside the ball nut (5) until the processing module detects a high temperature. Step S3: The rotation of motor 1 (20) drives the winding wheel (21) to rotate. The rotation of winding wheel (21) drives the pull rope (22) to move. The movement of pull rope (22) drives the T-shaped clamp (27) to move. The movement of T-shaped clamp (27) drives the second slide cylinder (24) to move. The movement of second slide cylinder (24) causes T-shaped clamp (27) to drive the fifth spring (25) to move. The movement of fifth spring (25) causes T-shaped clamp (27) to move out of the slot through the third cylinder (26). At this time, pull the output end of servo motor (40) or the first lead screw (4) to move it out of the fixed cylinder (3). Step S4: The ball nut (5) moves, causing the No. 6 box (6) to move. The No. 6 box (6) moves, causing the scraping pad (29) to move. The scraping pad (29) moves to scrape the stains on the surface of the No. 1 lead screw (4). The electromagnetic block (37) starts to generate magnetic force to drive the connecting rod (35) to move. The connecting rod (35) moves, causing the No. 8 spring (38) to move. The No. 8 spring (38) moves, causing the connecting rod (35) to drive the T-shaped head (34) to move. The T-shaped head (34) moves, causing the No. 5 slide cylinder (32) to move. The No. 5 slide cylinder (32) moves, causing the T-shaped head (34) to move out of the No. 5 slot (39). At this time, the scraping pad (29) is pulled to drive the support block (28) to move. The support block (28) moves, causing it to move out of the No. 6 box (6) as a whole for easy replacement.

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