Machine tool guide rail assembly

Abstract

The invention provides a machine tool guide rail assembly. The machine tool guide rail assembly comprises a guide rail; the sliding block assembly comprises a sliding block and a throttling structure, the sliding block is provided with a flow channel and a mounting hole, and the throttling structure is arranged in the mounting hole; the throttling structure is provided with an exhaust channel, and the flow channel communicates with the exhaust channel through the mounting hole. The air supply device is communicated with the flow channel so as to supply air into the flow channel; an exhaust port of the exhaust channel is located between the guide rail and the sliding block, so that gas exhausted from the exhaust port forms a gas film between the guide rail and the sliding block. The sliding block guide rail system effectively solves the problem that in the prior art, large friction force exists in the operation process of a sliding block guide rail system, and the working efficiency is affected.

Description

Technical Field

[0001] The present invention relates to the technical field of machine tools, and more particularly, to a machine tool guide rail assembly. Background Art

[0002] Currently, in the field of numerical control machine tools, especially in the process of achieving high-precision and high-speed machining, the combination of a guide rail and a slider is one of the key components for ensuring the precise positioning and movement of a workpiece or a tool.

[0003] However, for traditional slider guide rail systems, such as ball guide rails or linear guide rails, although they provide relatively high load-bearing capacity and stability, their inherent physical contact will result in relatively large sliding friction, which has an adverse impact on the accuracy and efficiency of the machine tool. In addition, the long-term physical contact will accelerate the wear of the guide rail and the slider, increasing the maintenance cost and reducing the service life of the equipment. Summary of the Invention

[0004] The main object of the present invention is to provide a machine tool guide rail assembly to solve the problem that the slider guide rail system in the prior art has relatively large friction during operation, which affects its working efficiency.

[0005] To achieve the above object, the present invention provides a machine tool guide rail assembly, including: a guide rail; a slider assembly including a slider and a throttling structure, the slider having a flow channel and a mounting hole, and the throttling structure being disposed in the mounting hole; the throttling structure having an exhaust channel, the flow channel being communicated with the exhaust channel through the mounting hole; a gas supply device communicated with the flow channel to supply gas into the flow channel; wherein, the exhaust port of the exhaust channel is located between the guide rail and the slider, so that the gas discharged from the exhaust port forms an air film between the guide rail and the slider.

[0006] Further, the extending direction of the flow channel is the same as the extending direction of the slider, and the flow channel penetrates at least one end of the slider; the extending direction of the mounting hole is arranged at an angle with respect to the extending direction of the flow channel; and / or, the cross-sectional area s of the exhaust port is smaller than the cross-sectional area S1 of the flow channel; and / or, the aperture of the exhaust port is less than or equal to 0.1 mm and less than or equal to 0.2 mm.

[0007] Further, the throttling structure has a buffer cavity, the mounting hole is communicated with the air inlet of the exhaust channel through the buffer cavity; the cross-sectional area S2 of the buffer cavity, the cross-sectional area s of the exhaust port, and the cross-sectional area S1 of the flow channel satisfy: s < S2 < S1.

[0008] Further, the throttling structure includes: a cylinder body; a baffle plate disposed on the first end of the cylinder body to form a buffer cavity with the cylinder body; wherein, the exhaust channel is disposed on the baffle plate, and the exhaust channel penetrates through two plate surfaces of the baffle plate.

[0009] Further, the slider has a sliding surface facing the guide rail for mating with the guide rail, and the mounting hole penetrates the sliding surface; wherein, the baffle is arranged flush with the sliding surface.

[0010] Further, there are multiple flow channels, and the multiple flow channels are arranged at intervals around the guide rail. Each flow channel communicates with multiple mounting holes, and the multiple mounting holes are arranged at intervals along the extending direction of the flow channel.

[0011] Further, the machine tool guide rail assembly further includes: a first sealing structure arranged between the second end of the cylinder body and the hole wall of the mounting hole; and / or, a second sealing structure arranged between the outer peripheral surface of the cylinder body and the hole wall of the mounting hole.

[0012] Further, the throttling structure is made of copper material; and / or, there is one exhaust channel; or, there are multiple exhaust channels, and the multiple exhaust channels are arranged at intervals along the length direction and / or width direction of the throttling structure.

[0013] Further, along the direction from the air inlet to the air outlet of the exhaust channel, the cross-sectional area of the exhaust channel gradually decreases.

[0014] Further, the machine tool guide rail assembly includes: a first control valve arranged at the air outlet of the throttling structure; a control module electrically connected to the first control valve; wherein, the control module adjusts the operating parameters of the first control valve according to the load value of the slider, and further adjusts at least one of the flow rate, flow velocity and air pressure of the gas discharged from the air outlet.

[0015] Applying the technical solution of the present invention, the machine tool guide rail assembly includes a guide rail, a slider assembly and a gas supply device. The slider assembly includes a slider and a throttling structure. The slider has a flow channel and a mounting hole, and the throttling structure is arranged in the mounting hole; the throttling structure has an exhaust channel, and the flow channel communicates with the exhaust channel through the mounting hole. The gas supply device communicates with the flow channel to supply gas into the flow channel. Among them, the air outlet of the exhaust channel is located between the guide rail and the slider, so that the gas discharged from the air outlet forms an air film between the guide rail and the slider. In this way, through the air film formed between the guide rail and the slider, non-contact movement between the two is realized, the friction force during the movement is greatly reduced, the accuracy, stability and dynamic response of the system are improved, at the same time, energy consumption and wear are reduced, and the service life of the equipment is prolonged, thus solving the problem that the existing slider guide rail system has a large friction force during operation, which affects its working efficiency.

[0016] Compared with the traditional sliding or rolling guide rails, the machine tool guide rail assembly in the present application adopts the air floating technology and utilizes the suspension effect of the air film, and can maintain a very low friction coefficient within a wide working range, and achieve the same or higher operating efficiency with lower energy consumption, thereby improving the overall efficiency of the system and reducing the operating cost. Description of the Drawings

[0017] The accompanying drawings of the specification, which form a part of the present application, are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 shows a top view of a machine tool guide rail assembly according to an embodiment of the present invention installed on a machine tool;

[0019] Figure 2 shows Figure 1 a side view of the machine tool guide rail assembly in

[0020] Figure 3 shows a top view of a slider of a machine tool guide rail assembly according to an embodiment of the present invention;

[0021] Figure 4 shows Figure 3 a sectional view taken along line A-A of the slider in

[0022] Figure 5 shows Figure 3 a side view of the slider in

[0023] Figure 6 shows Figure 3 a perspective view of the slider in

[0024] Figure 7 shows Figure 3 a bottom view of the slider in

[0025] Figure 8 shows a three-dimensional structural schematic diagram of a guide rail of a machine tool guide rail assembly according to an embodiment of the present invention;

[0026] Figure 9 shows Figure 8 a front view of the guide rail in

[0027] Figure 10 shows a three-dimensional structural schematic diagram of a throttling structure of a machine tool guide rail assembly according to an embodiment of the present invention;

[0028] Figure 11 shows Figure 10 a top view of the throttling structure in

[0029] Figure 12 shows Figure 10 a side view of the throttling structure in

[0030] Among them, the above-mentioned drawings include the following reference numerals:

[0031] 10. Guide rail;

[0032] 20. Slide block assembly; 21. Slide block; 211. Runner; 212. Mounting hole; 213. Sliding surface; 22. Throttle structure; 221. Exhaust passage; 2211. Exhaust port; 2212. Intake port; 222. Buffer chamber; 223. Cylinder body; 224. Baffle plate

[0033] 30. Machine tool body; 40. Machine tool guide rail assembly; 50. Workbench Detailed implementation manners

[0034] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present invention will be described in detail below with reference to the drawings and in conjunction with the embodiments

[0035] It should be pointed out that, unless otherwise specified, all technical and scientific terms used in the present application have the same meanings as those commonly understood by those of ordinary skill in the technical field to which the present application belongs

[0036] In the present invention, unless otherwise stated, the orientation terms such as "upper" and "lower" generally refer to the directions shown in the drawings, or refer to the vertical, perpendicular or gravitational directions; similarly, for ease of understanding and description, "left" and "right" generally refer to the left and right shown in the drawings; "inner" and "outer" refer to the inner and outer of the contour of each component itself, but the above orientation terms do not limit the present invention

[0037] In order to solve the problem that the existing slide block guide rail system has a large frictional force during operation, which affects its working efficiency, the present application provides a machine tool guide rail assembly

[0038] As Figures 1 to 12 shown, the machine tool guide rail assembly includes a guide rail 10, a slide block assembly 20 and a gas supply device. The slide block assembly 20 includes a slide block 21 and a throttle structure 22. The slide block 21 has a runner 211 and a mounting hole 212, and the throttle structure 22 is arranged in the mounting hole 212; the throttle structure 22 has an exhaust passage 221, and the runner 211 is communicated with the exhaust passage 221 through the mounting hole 212. The gas supply device is communicated with the runner 211 to supply gas into the runner 211. Among them, the exhaust port 2211 of the exhaust passage 221 is located between the guide rail 10 and the slide block 21, so that the gas discharged from the exhaust port 2211 forms an air film between the guide rail 10 and the slide block 21

[0039] Applying the technical solution of this embodiment, through the air film formed between the guide rail and the slide block, non-contact movement of the two is realized, the frictional force during movement is greatly reduced, the accuracy, stability and dynamic response of the system are improved, and at the same time, energy consumption and wear are reduced, and the service life of the equipment is prolonged. Furthermore, the problem that the existing slide block guide rail system has a large frictional force during operation, which affects its working efficiency, is solved

[0040] Compared with traditional sliding or rolling guide rails, the machine tool guide rail assembly in the present application adopts air-floating technology and utilizes the suspension effect of the air film, which can maintain an extremely low friction coefficient within a wide working range, achieve the same or higher operating efficiency with lower energy consumption, thereby improving the overall efficiency of the system and reducing the operating cost.

[0041] In this embodiment, the slider assembly 20 compresses high-pressure gas through the throttling structure 22 to form a layer of air film with stiffness, enabling the slider 21 to move quickly. At the same time, since there is no friction in air, the generation of frictional heat is reduced, further expanding the application range of the slider assembly 20 and extending the service life of the machine tool guide rail assembly.

[0042] In this embodiment, the throttling structure 22 is embedded in the slider 21 to ensure the close fit between the slider assembly 20 and the guide rail 10 and reduce gas leakage.

[0043] In this embodiment, high-pressure gas with a certain pressure flows through the flow channel 211 and passes through the throttling structure 22 to generate a certain pressure drop, and then gradually decreases to the ambient pressure of 0.1 MPa at the exhaust port 2211. At this time, a pressure air film with a certain stiffness is formed between the sliding surface 213 of the slider 21 and the bearing surface of the guide rail 10.

[0044] Optionally, the throttling structure 22 is bonded or welded to the mounting hole 212.

[0045] In this embodiment, the extending direction of the flow channel 211 is the same as that of the slider 21, and the flow channel 211 penetrates at least one end of the slider 21; the extending direction of the mounting hole 212 is set at an angle with respect to the extending direction of the flow channel 211. In this way, the extending direction of the flow channel 211 is the same as that of the slider 21, which can ensure the uniform distribution of gas along the length direction of the slider, and further ensure that stable gas supply can be obtained regardless of the position of the slider 21 on the guide rail 10, thereby forming a uniform air film and ensuring the smooth movement and accuracy of the slider 21. At the same time, the above design optimizes the gas distribution and the air film formation mechanism, not only improving the working performance and reliability of the machine tool guide rail assembly, but also reducing the processing cost and difficulty of the slider 21.

[0046] In this embodiment, the flow channel 211 penetrates both ends of the slider 21 to make the processing of the flow channel 211 easier and simpler, reducing the processing cost and difficulty. The extending direction of the mounting hole 212 is set at an angle with respect to the extending direction of the flow channel 211 to ensure that the gas entering the throttling structure 22 through the flow channel 211 can smoothly flow between the slider 21 and the guide rail 10 to form a more stable and more conforming air film, thereby improving the control accuracy and dynamic response ability of the slider 21 during high-speed movement.

[0047] Optionally, the extending direction of the mounting hole 212 is perpendicular to the extending direction of the flow channel 211.

[0048] Optionally, the cross-sectional area s of the exhaust port 2211 is smaller than the cross-sectional area S1 of the flow channel 211; and / or, the aperture of the exhaust port 2211 is less than or equal to 0.1 mm and less than or equal to 0.2 mm. In this way, by making the cross-sectional area s of the exhaust port 2211 smaller than the cross-sectional area S1 of the flow channel 211, the throttling effect of the throttling structure 22 on the high-pressure gas is achieved, and then a high-pressure gas film is formed between the slider 21 and the guide rail 10; at the same time, the design of the smaller cross-sectional area and aperture of the exhaust port can achieve fine control of the gas discharge volume, and then form a stable gas film. In addition, by restricting the gas flow rate, a uniform gas film can be established between the guide rail 10 and the slider 21, effectively reducing the friction during the sliding process and improving the running accuracy and stability of the slider 21.

[0049] In this embodiment, the cross-sectional area s of the exhaust port 2211 is smaller than the cross-sectional area S1 of the flow channel 211, and the aperture of the exhaust port 2211 is 0.15 mm. In this way, the above values of the exhaust port help to form a pressure gradient between the flow channel 211 and the exhaust port 2211. The larger cross-sectional area of the flow channel 211 ensures sufficient gas capacity, while the small cross-sectional area of the exhaust port 2211 can maintain the high-pressure state of the gas, ensuring the gas pressure required for the formation and maintenance of the gas film. At the same time, the precise control of the aperture can prevent excessive gas dissipation, maintain the stability of the gas film, avoid the rupture or instability of the gas film caused by gas pressure fluctuations, and thus affect the smooth movement of the slider. The small aperture also helps to reduce the influence of external environmental factors (such as temperature changes) on the gas film and enhances the anti-interference ability of the system.

[0050] As Figure 12 shown, the throttling structure 22 has a buffer cavity 222, and the mounting hole 212 is communicated with the air inlet of the exhaust passage 221 through the buffer cavity 222; the cross-sectional area S2 of the buffer cavity 222, the cross-sectional area s of the exhaust port 2211, and the cross-sectional area S1 of the flow channel 211 satisfy: s < S2 < S1. In this way, the above setting of the buffer cavity 222 enables the gas pressure from the flow channel 211 to the exhaust passage 221 to transition smoothly. That is, the larger cross-sectional area S1 in the flow channel 211 ensures sufficient gas supply and pressure, and through entering the buffer cavity 222 with a smaller cross-sectional area S2, the gas pressure is preliminarily adjusted to prepare for subsequent entry into the exhaust port 2211 with an even smaller cross-sectional area s, avoiding drastic changes in pressure and improving the stability and control accuracy of the system.

[0051] In this embodiment, when the gas flows from the flow channel 211 to the exhaust port 2211, its cross-sectional area gradually decreases (S1 > S2 > s). This process realizes the gradual throttling of the gas. The above setting of the throttling structure 22 can accurately control the gas flow rate, ensure the formation and stability of the gas film, make the gas discharge more uniform, reduce the pressure fluctuation in the gas film, and enhance the smoothness of the slider movement. At the same time, through multi-stage throttling control, the machine tool guide rail assembly can maintain the stability of the gas film with lower energy consumption, avoid energy waste caused by excessive gas supply, and the above setting of the buffer chamber 222 can also reduce the eddy current and noise during the high-speed flow of the gas, creating better quiet conditions for the working environment.

[0052] Specifically, the above settings among the cross-sectional area S2 of the buffer chamber 222, the cross-sectional area s of the exhaust port 2211, and the cross-sectional area S1 of the flow channel 211 can achieve the two-stage throttling effect of the high-pressure gas. First, the high-pressure gas flows into the throttling structure 22 through the flow channel 211 to achieve the first throttling. This step is mainly to reduce the gas pressure and prepare for subsequent precise control. Subsequently, the gas achieves the second throttling through the exhaust channel 221. This step is the key to forming the high-pressure gas film. By precisely controlling the aperture of the exhaust channel 221, the pressure and thickness of the gas film can be accurately adjusted.

[0053] As Figures 10 to 12 shown, the throttling structure 22 includes a cylinder body 223 and a baffle 224. The baffle 224 is arranged at the first end of the cylinder body 223 to form the buffer chamber 222 with the cylinder body 223. Among them, the exhaust channel 221 is arranged on the baffle 224, and the exhaust channel 221 penetrates through the two plate surfaces of the baffle 224. In this way, the baffle 224 and the cylinder body 223 jointly form the buffer chamber 222, which can effectively throttle the gas and evenly distribute the gas to the exhaust channel 221 at the same time. After the gas enters the buffer chamber 222, the pressure is initially adjusted, which helps to form a stable and uniform gas film, ensuring the smooth movement of the slider 21 on the guide rail 10. At the same time, the exhaust channel 221 is arranged on the baffle 224, which can more accurately control the path of the gas flowing from the buffer chamber 222 to the exhaust port 2211, making the gas flow more orderly, reducing the turbulence and pressure fluctuation, enhancing the stability of the gas film, and improving the dynamic response ability and positioning accuracy of the slider 21.

[0054] Optionally, the cylinder body 223 and the baffle 224 are welded together.

[0055] As Figure 5As shown, the slider 21 has a sliding surface 213 facing the guide rail 10 for cooperation with the guide rail 10, and the mounting hole 212 penetrates through the sliding surface 213; wherein, the baffle 224 is arranged flush with the sliding surface 213. In this way, the baffle 224 is flush with the sliding surface 213, ensuring that the gas discharged from the exhaust port 2211 can directly act on the surface of the guide rail 10 to form a uniform and closely fitting air film, which is beneficial for the slider 21 to achieve low-friction and high-precision movement on the guide rail 10, thereby improving the operating efficiency and machining accuracy of the machine tool guide rail assembly.

[0056] Optionally, there are multiple flow channels 211, and the multiple flow channels 211 are arranged at intervals around the guide rail 10. Each flow channel 211 communicates with multiple mounting holes 212, and the multiple mounting holes 212 are arranged at intervals along the extension direction of the flow channel 211. In this way, the arrangement of the multiple flow channels 211 can ensure the uniform supply of gas from different directions, and then realize the uniform distribution of the air film under the entire slider 21, ensuring the smooth operation and high-precision positioning of the slider 21. At the same time, the flow channels 211 are arranged at intervals around the guide rail 10, and the mounting holes 212 are arranged at intervals along the extension direction of the flow channel, which is beneficial to form a more stable and wider coverage air film. Even under the conditions of load change or slider speed adjustment, this distribution can reduce the fluctuation of local gas pressure and maintain the continuity and stability of the air film.

[0057] In this embodiment, each flow channel 211 is independently connected to a group of mounting holes 212, and thus the gas supply amount of each flow channel 211 can be independently adjusted according to actual needs, improving the dynamic response speed and flexibility of the system. At the same time, the design of multiple flow channels 211 and multiple mounting holes 212 allows the state of each flow channel to be inspected and adjusted separately during maintenance without disassembling the entire slider. This can not only quickly locate the fault point but also perform targeted maintenance or replacement, reducing the downtime and maintenance cost.

[0058] In this embodiment, there are multiple throttling structures 22, and the multiple throttling structures 22 are arranged in one-to-one correspondence with the multiple mounting holes 212. Each throttling structure 22 is responsible for a part of the area of the guide rail 10 to ensure the uniform distribution and stability of the air film.

[0059] Specifically, the interval arrangement of the multiple flow channels 211 also helps to improve the heat dissipation inside the slider 21, avoiding the problem of heat accumulation that may occur in a single long flow channel.

[0060] Optionally, the machine tool guide rail assembly further includes a first sealing structure disposed between the second end of the cylinder body 223 and the hole wall of the mounting hole 212; and / or, the machine tool guide rail assembly further includes a second sealing structure disposed between the outer peripheral surface of the cylinder body 223 and the hole wall of the mounting hole 212. In this way, the setting of the first sealing structure and / or the second sealing structure enhances the airtightness between the slider 21 and the guide rail 10, and can effectively prevent gas from leaking between the throttling structure 22 and the slider 21, so as to maintain the stability and thickness of the air film, thereby ensuring low friction and high-precision movement of the slider on the guide rail. At the same time, the above setting of the sealing structure prevents external impurities from entering the machine tool guide rail assembly, and avoids the instability of the air film caused by pollutants such as dust or oil stains.

[0061] In this embodiment, the machine tool guide rail assembly further includes a first sealing structure and a second sealing structure. The first sealing structure is disposed between the second end of the cylinder body 223 and the hole wall of the mounting hole 212, and the second sealing structure is disposed between the outer peripheral surface of the cylinder body 223 and the hole wall of the mounting hole 212.

[0062] Optionally, the throttling structure 22 is made of copper material; and / or, there is one exhaust passage 221; or, there are multiple exhaust passages 221, and the multiple exhaust passages 221 are arranged at intervals along the length direction and / or width direction of the throttling structure 22. In this way, the copper material has good thermal conductivity and can effectively dissipate heat, avoiding heat accumulation caused by gas compression during throttling, resulting in performance degradation or structural damage, and the corrosion resistance of copper ensures the long-term stable operation of the throttling structure 22 in a gas environment and extends its service life. At the same time, when there are multiple exhaust passages 221 and they are arranged at intervals along the length direction and / or width direction of the throttling structure 22, it can ensure uniform gas supply from all directions, form a stable and wide-coverage air film, which is beneficial to reducing local friction during slider movement and improving the smoothness and accuracy of operation.

[0063] In this embodiment, the throttling structure 22 is made of copper material. There is one exhaust passage 221, and the one exhaust passage 221 extends along the thickness direction (height direction) of the throttling structure 22. In this way, the mechanical strength and toughness of the throttling structure 22 supported by the copper material are moderate, and it can withstand the action of high-pressure gas without being easily deformed or damaged, ensuring the dimensional stability and accuracy of the throttling structure 22, so as to facilitate maintaining the uniformity and stability of the air film.

[0064] Specifically, the throttling structure 22 is columnar, and the central axis of the one exhaust passage 221 is coaxially arranged with the central axis of the throttling structure 22.

[0065] In other embodiments not shown in the drawings, there are multiple exhaust channels 221, and the multiple exhaust channels 221 are arranged at intervals along the length direction of the throttling structure 22. Among them, each exhaust channel 221 extends along the thickness direction (height direction) of the throttling structure 22. In this way, the above arrangement of the multiple exhaust channels 221 increases the exhaust volume of the throttling structure 22 to ensure the stability of the air film. At the same time, by independently adjusting the gas flow rate of each exhaust channel 221, the thickness and pressure of the air film can be quickly adjusted, improving the dynamic performance.

[0066] In other embodiments not shown in the drawings, there are multiple exhaust channels 221, and the multiple exhaust channels 221 are arranged at intervals along the width direction of the throttling structure 22. Among them, each exhaust channel 221 extends along the thickness direction (height direction) of the throttling structure 22. In this way, the above arrangement of the multiple exhaust channels 221 increases the exhaust volume of the throttling structure 22 to ensure the stability of the air film. At the same time, by independently adjusting the gas flow rate of each exhaust channel 221, the thickness and pressure of the air film can be quickly adjusted, improving the dynamic performance.

[0067] In other embodiments not shown in the drawings, there are multiple exhaust channels 221, and the multiple exhaust channels 221 are arranged at intervals along the length direction and the width direction of the throttling structure 22. Among them, each exhaust channel 221 extends along the thickness direction (height direction) of the throttling structure 22. In this way, the above arrangement of the multiple exhaust channels 221 enables the machine tool guide rail assembly to respond more quickly to load or speed changes. By independently adjusting the gas flow rate of each exhaust channel 221, the thickness and pressure of the air film can be quickly adjusted, improving the dynamic performance.

[0068] In other embodiments not shown in the drawings, along the direction from the air inlet 2212 to the air outlet 2211 of the exhaust channel 221, the cross-sectional area of the exhaust channel 221 gradually decreases. In this way, as the cross-sectional area gradually decreases, the gas will experience gradual compression when passing through the exhaust channel 221, resulting in an increasing trend of the gas pressure in the channel from the air inlet to the air outlet. The establishment of this pressure gradient helps to form a stable and pressurized air film under the slider, thereby reducing the contact between the slider and the guide rail and achieving low-friction movement.

[0069] Optionally, the machine tool guide rail assembly includes a first control valve and a control module. The first control valve is disposed at the exhaust port 2211 of the throttling structure 22. The control module is electrically connected to the first control valve. Wherein, the control module adjusts the operating parameters of the first control valve according to the load value of the slider 21, and further adjusts at least one of the flow rate, flow velocity, and air pressure of the gas discharged from the exhaust port 2211. In this way, the control module can monitor the load value of the slider 21 in real time, automatically adjust the parameters of the first control valve according to different load conditions, ensure that the air film can adapt to the change of the slider load, thereby maintaining the smooth movement of the slider 21 on the guide rail 10, and improving the accuracy and stability during the machining process. At the same time, through the intelligent adjustment of the first control valve, the system can accurately match the gas consumption with the actual load demand, avoid energy waste caused by excessive gas supply under light load conditions, and ensure gas supply under heavy load, realizing refined management and optimization of energy consumption.

[0070] Optionally, the machine tool guide rail assembly further includes a pipeline and a second control valve. Wherein, the air supply device is communicated with the flow channel 211 through the pipeline, and the second control valve is disposed on the pipeline to control the gas flow rate or flow velocity in the pipeline. In this way, by accurately adjusting the gas flow rate or flow velocity entering the flow channel 211 through the second control valve, the smoothness and accuracy of the movement of the slider 21 on the guide rail 10 are ensured, and different load and speed requirements are adapted. At the same time, by regulating the gas supply through the second control valve, unnecessary gas waste can be reduced, and accurate management of energy consumption can be realized. Especially when operating under light load or low speed, appropriately reducing the gas flow rate can effectively save energy; while during high-precision machining or high-speed movement, the second control valve can respond quickly to ensure sufficient gas supply and maintain the stability of the air film.

[0071] In this embodiment, the throttling structure 22 can dynamically adjust the air flow according to the changes in load and speed to adapt to different working conditions and ensure the stability of the air film and the smooth movement of the slider.

[0072] Optionally, the slider 21 is made of high-strength aluminum alloy material to reduce weight and improve wear resistance.

[0073] As Figure 1 and Figure 2 shown, the present application further provides a machine tool, including a machine tool body 30, a machine tool guide rail assembly 40, a workbench 50, a detection device, and a control module. The machine tool guide rail assembly 40 is disposed on the machine tool body 30, and the workbench 50 is disposed on the machine tool guide rail assembly 40. The detection device is disposed on the workbench 50 to detect the load value of the workbench 50. The control module is electrically connected to both the detection device and the control valve of the machine tool guide rail assembly 40. Wherein, the control module controls the gas flow rate or flow velocity in the pipeline of the machine tool guide rail assembly 40 through the control valve according to the detection value of the detection device. The machine tool guide rail assembly 40 is the above-mentioned guide rail assembly.

[0074] Specifically, the above settings of the detection device can monitor the load value of the workbench 50 in real time. By feeding back the detection results to the control module, the machine tool can automatically adjust the control valve to change the gas flow rate or velocity to adapt to different load conditions of the workbench, ensuring the stability of the air film and the smooth movement of the slider, and improving the machining accuracy and efficiency. At the same time, the electrical connection between the control module, the detection device, and the control valve forms a closed-loop control system, which can quickly respond to load changes, timely adjust the gas supply, reduce the instability of the slider operation caused by load changes, and enhance the dynamic response ability and control accuracy of the machine tool.

[0075] In this embodiment, adjusting the gas flow rate or velocity according to the real-time load avoids unnecessary gas supply and realizes the efficient utilization of energy. At low loads, gas consumption is reduced to achieve the purpose of energy conservation and emission reduction; while at high loads, sufficient gas supply is ensured to maintain the stable operation of the system. At the same time, through intelligent detection, dynamic adjustment, and integrated control, the machine tool has been comprehensively improved in terms of load adaptability, energy consumption management, fault warning, operation automation, etc.

[0076] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0077] The machine tool guide rail assembly includes a guide rail, a slider assembly, and a gas supply device. The slider assembly includes a slider and a throttling structure. The slider has a flow channel and a mounting hole, and the throttling structure is arranged in the mounting hole; the throttling structure has an exhaust channel, and the flow channel is communicated with the exhaust channel through the mounting hole. The gas supply device is communicated with the flow channel to supply gas into the flow channel. Among them, the exhaust port of the exhaust channel is located between the guide rail and the slider, so that the gas discharged from the exhaust port forms an air film between the guide rail and the slider. In this way, through the air film formed between the guide rail and the slider, non-contact movement between the two is realized, the friction force during the movement is greatly reduced, the accuracy, stability, and dynamic response of the system are improved, at the same time, energy consumption and wear are reduced, and the service life of the equipment is extended, thus solving the problem that the slider guide rail system in the prior art has a large friction force during operation, which affects its working efficiency.

[0078] Compared with traditional sliding or rolling guide rails, the machine tool guide rail assembly in this application adopts air-floating technology and utilizes the suspension effect of the air film, which can maintain an extremely low friction coefficient within a wide working range, achieve the same or higher operating efficiency with lower energy consumption, and thus improve the overall efficiency of the system and reduce the operating cost.

[0079] Obviously, the embodiments described above are only some, rather than all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0080] It should be noted that the terms used herein are for the purpose of describing particular embodiments only and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly dictates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of the stated features, steps, operations, devices, components, and / or combinations thereof.

[0081] It should be noted that the terms "first", "second", etc. in the description and claims of the present application and the above drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data may be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order different from those illustrated or described herein.

[0082] The foregoing are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A machine tool guide rail assembly, characterized in that, Comprising: A guide rail (10); A slider assembly (20), including a slider (21) and a throttling structure (22). The slider (21) has a flow channel (211) and a mounting hole (212), and the throttling structure (22) is arranged in the mounting hole (212); the throttling structure (22) has an exhaust channel (221), and the flow channel (211) is communicated with the exhaust channel (221) through the mounting hole (212); A gas supply device, which is communicated with the flow channel (211) to supply gas into the flow channel (211); Wherein, the exhaust port (2211) of the exhaust channel (221) is located between the guide rail (10) and the slider (21), so that the gas discharged from the exhaust port (2211) forms an air film between the guide rail (10) and the slider (21).

2. The machine tool guide rail assembly according to claim 1, wherein The extending direction of the flow channel (211) is consistent with the extending direction of the slider (21), and the flow channel (211) penetrates at least one end of the slider (21); the extending direction of the mounting hole (212) is arranged at an angle with the extending direction of the flow channel (211); and / or, The cross-sectional area s of the exhaust port (2211) is smaller than the cross-sectional area S1 of the flow channel (211); and / or, the aperture of the exhaust port (2211) is less than or equal to 0.1 mm and less than or equal to 0.2 mm.

3. The machine tool guide rail assembly according to claim 2, wherein, The throttling structure (22) has a buffer cavity (222), and the mounting hole (212) is communicated with the intake port of the exhaust channel (221) through the buffer cavity (222); the cross-sectional area S2 of the buffer cavity (222), the cross-sectional area s of the exhaust port (2211), and the cross-sectional area S1 of the flow channel (211) satisfy: s < S2 < S1.

4. The machine tool guide rail assembly according to claim 3, characterized in that, The throttling structure (22) includes: A cylinder body (223); A baffle plate (224), which is arranged on the first end of the cylinder body (223) to surround and form the buffer cavity (222) with the cylinder body (223); Wherein, the exhaust channel (221) is arranged on the baffle plate (224), and the exhaust channel (221) penetrates through two plate surfaces of the baffle plate (224).

5. The machine tool guide rail assembly according to claim 4, characterized in that, The slider (21) has a sliding surface (213) facing the guide rail (10) for cooperating with the guide rail (10), and the mounting hole (212) penetrates through the sliding surface (213); Wherein, the baffle plate (224) is flush with the sliding surface (213).

6. The machine tool guide rail assembly according to claim 1, wherein, There are multiple flow channels (211), and the multiple flow channels (211) are arranged at intervals around the guide rail (10). Each flow channel (211) is communicated with multiple mounting holes (212), and the multiple mounting holes (212) are arranged at intervals along the extending direction of the flow channel (211).

7. The machine tool guide rail assembly according to claim 5, characterized in that, The machine tool guide rail assembly further includes: A first sealing structure, which is arranged between the second end of the cylinder body (223) and the hole wall of the mounting hole (212); and / or, The second sealing structure is disposed between the outer peripheral surface of the cylinder body (223) and the hole wall of the mounting hole (212).

8. The machine tool guide rail assembly according to claim 1, characterized in that, The throttling structure (22) is made of copper material; and / or, there is one exhaust passage (221); or, there are a plurality of exhaust passages (221), and the plurality of exhaust passages (221) are arranged at intervals along the length direction and / or the width direction of the throttling structure (22).

9. The machine tool guide rail assembly according to claim 1, wherein, Along the direction from the air inlet (2212) to the air outlet (2211) of the exhaust passage (221), the cross-sectional area of the exhaust passage (221) gradually decreases.

10. The machine tool guide rail assembly according to claim 1, characterized in that, The machine tool guide rail assembly includes: A first control valve, which is disposed at the air outlet (2211) of the throttling structure (22); A control module, which is electrically connected to the first control valve; Wherein, the control module adjusts the operating parameters of the first control valve according to the load value of the slider (21), and further adjusts at least one of the flow rate, flow velocity and air pressure of the gas discharged from the air outlet (2211).

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