Hydrostatic guideway slide and hydraulic system

Abstract

The application discloses a hydrostatic guide rail sliding block and a hydraulic system. The hydrostatic guide rail sliding block comprises a sliding block body and a sealing gasket. At least one side surface of the sliding block body is provided with a hydrostatic cavity. An oil sealing edge is arranged on the outer circumferential side of the hydrostatic cavity. An oil return groove is arranged around the outer circumferential side of the oil sealing edge. An oil inlet hole is arranged on the sliding block body and communicates with the hydrostatic cavity. An oil return hole is further arranged on the sliding block body and communicates with the oil return groove. The sealing gasket is arranged around the outer circumferential side of the oil return groove and is higher than the first surface of the oil sealing edge. The hydrostatic guide rail sliding block and the hydraulic system can at least solve the problems of low oil return efficiency, easy pollution of the working environment and easy mixing of impurities in the hydraulic oil in the oil return of the prior art.

Description

Technical Field

[0001] This application relates to the field of hydrostatic technology, and more specifically, to a hydrostatic guide rail slider and hydraulic system. Background Technology

[0002] In related technologies, hydrostatic guide rails rely on gravity for natural oil return, resulting in low efficiency and failing to meet the high-efficiency circulation requirements of hydraulic systems. Furthermore, existing hydrostatic guide rail return designs suffer from hydraulic oil accumulation and overflow, leading to lubricant waste and contamination of the surrounding working environment. In addition, the existing return process allows impurities such as metal shavings and dust to easily mix into the hydraulic oil, causing oil deterioration and increasing the risk of hydraulic system malfunctions. Utility Model Content

[0003] The main objective of this application is to provide a hydrostatic guide rail slider and hydraulic system to solve the problems of low return oil efficiency, easy contamination of the working environment, and easy mixing of impurities into the hydraulic oil in the return oil of existing hydraulic systems.

[0004] According to one aspect of this application, a hydrostatic guide rail slider is provided, comprising: The slider body has a static pressure chamber on at least one side, an oil sealing edge on the outer periphery of the static pressure chamber, an oil return groove on the outer periphery of the oil sealing edge, an oil inlet hole communicating with the static pressure chamber, and an oil return hole communicating with the oil return groove. A sealing gasket, which surrounds the outer periphery of the oil return groove and is higher than the first surface of the oil sealing edge.

[0005] Furthermore, the sealing gasket includes a fluororubber sealing gasket or a nitrile rubber sealing gasket.

[0006] Furthermore, the height of the sealing gasket above the first surface of the sealing edge is greater than or equal to 0.05 mm.

[0007] Furthermore, the slider body includes a mounting groove, which surrounds the outer periphery of the oil return groove, and the sealing gasket is adhesively disposed in the mounting groove.

[0008] Furthermore, the hydrostatic guide rail slider also includes a throttle, which is installed on the first side of the slider body and is used to regulate the pressure of the hydraulic oil entering the hydrostatic chamber.

[0009] Furthermore, the slider body also includes a second side and a third side disposed opposite to the second side, both the second side and the third side being perpendicular to the first side. The static pressure chamber includes a first static pressure chamber and a second static pressure chamber, the first static pressure chamber being disposed on the second side and the second static pressure chamber being disposed on the third side.

[0010] Furthermore, an oil inlet, a first oil outlet, and a second oil outlet are sequentially provided on the first side. The throttle includes an oil inlet channel and an oil outlet channel. The oil inlet is connected to the oil inlet channel, the first oil outlet is connected to the oil outlet channel, and the second oil outlet is connected to the gap formed between the throttle and the first side. The slider body is provided with an oil inlet channel, which communicates with the oil inlet hole. The oil inlet channel includes: The first oil inlet section is connected to the oil inlet channel; The second oil inlet section has one end connected to the first oil outlet and the other end connected to the first static pressure chamber. The third oil inlet section has one end connected to the second oil outlet and the other end connected to the second static pressure chamber.

[0011] Furthermore, the slider body is also provided with a main oil inlet connected to an external oil pipe and a main oil outlet connected to an oil tank, wherein the main oil inlet is connected to the oil inlet hole and the main oil outlet is connected to the oil return hole.

[0012] Furthermore, the hydrostatic guide rail slider also includes a first sealing ring and a second sealing ring, the first sealing ring being disposed at the main oil inlet and the second sealing ring being disposed at the main oil outlet.

[0013] On the other hand, this application also provides a hydraulic system including the above-described hydrostatic guide slider.

[0014] In this application, a return oil groove is provided on the outer periphery of the static pressure chamber, and a sealing gasket is provided on the outer periphery of the return oil groove, with the sealing gasket being higher than the first surface of the sealing edge. This arrangement allows hydraulic oil overflowing from the oil inlet of the static pressure chamber to flow back quickly via the return oil groove and return oil inlet, forming a highly efficient and directional closed-loop return flow. This significantly improves the return oil efficiency, avoids hydraulic oil waste and contamination, and fundamentally ensures the cleanliness of the hydraulic oil and the reliable operation of the hydraulic system. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, are illustrative and descriptive, serving to explain this application and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of the hydrostatic guide rail slider disclosed in the embodiments of this application; Figure 2 for Figure 1 A side view from a first-person perspective; Figure 3 for Figure 1 A side view from a second-person perspective; Figure 4 This is a schematic diagram of the hydrostatic guide rail slider without the throttle valve disclosed in the embodiments of this application; Figure 5 This is a perspective view of the hydrostatic guide rail slider disclosed in the embodiments of this application; Figure 6 This is a diagram showing the internal oil passage connection relationship of the hydrostatic guide rail slider disclosed in the embodiments of this application; Figure 7 This is a side view from a third-person perspective of the throttle on the hydrostatic guide rail slider disclosed in the embodiments of this application.

[0016] The above figures include the following reference numerals: 100. Hydrostatic guide rail slider; 10. Slider body; 101. First side surface; 1011. Oil inlet; 1012. First oil outlet; 1013. Second oil outlet; 102. Second side surface; 103. Third side surface; 11. Hydrostatic chamber; 111. First hydrostatic chamber; 112. Second hydrostatic chamber; 12. Oil sealing edge; 121. First surface; 13. Oil return groove; 14. Oil inlet hole; 15. 16. Oil return hole; 17. Mounting groove; 18. Oil inlet channel; 191. First oil inlet section; 192. Second oil inlet section; 193. Third oil inlet section; 194. Oil return channel; 195. Main oil inlet; 196. Main oil outlet; 20. Sealing gasket; 30. Throttling device; 31. Oil inlet channel; 32. Oil outlet channel; 40. First sealing ring; 41. Second sealing ring; 50. Process hole; 60. Set screw. Detailed Implementation

[0017] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0019] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0020] As described in the background section, in related technologies, hydrostatic guide rails rely on gravity for natural oil return, resulting in low return efficiency and failing to meet the high-efficiency circulation requirements of hydraulic systems. Furthermore, existing hydrostatic guide rail return designs suffer from hydraulic oil accumulation and overflow, leading to lubricant waste and contamination of the surrounding working environment. In addition, during the existing return process, hydraulic oil is easily contaminated with impurities such as metal shavings and dust, causing oil deterioration and increasing the risk of hydraulic system malfunctions. Therefore, this application provides a novel hydrostatic guide rail slider. This slider has an oil return groove around the outer periphery of the oil sealing edge, and a sealing gasket around the outer periphery of the oil return groove. This design not only accelerates oil return but also prevents hydraulic oil leakage and contamination by impurities. The hydrostatic guide rail slider of this application will be described below with reference to the accompanying drawings.

[0021] See Figures 1 to 7 As shown, this application embodiment provides a hydrostatic guide rail slider 100, which includes a slider body 10 and a sealing gasket 20.

[0022] Specifically, at least one side of the slider body 10 is provided with a static pressure cavity 11, the outer periphery of the static pressure cavity 11 is provided with an oil sealing edge 12, the outer periphery of the oil sealing edge 12 is surrounded by an oil return groove 13, the slider body 10 is provided with an oil inlet hole 14 communicating with the static pressure cavity 11, and the slider body 10 is also provided with an oil return hole 15 communicating with the oil return groove 13; the sealing gasket 20 is surrounded on the outer periphery of the oil return groove 13 and is higher than the first surface 121 of the oil sealing edge 12. It can be understood that the first surface 121 refers to the upper surface of the oil sealing edge 12, that is, the surface close to the static pressure guide rail base during actual installation.

[0023] In actual use, the hydrostatic guide slider 100 is installed on the hydrostatic guide (not shown in the figure), and hydraulic oil is delivered to the oil inlet 14 that is connected to the hydrostatic chamber 11. The hydraulic oil will form an oil film with stable thickness and rigidity in the hydrostatic chamber 11, which separates the hydrostatic guide slider 100 and the hydrostatic guide base to form a non-contact gap, thus meeting the high-precision motion requirements of the hydrostatic guide.

[0024] Understandably, during this process, the hydraulic oil overflowing from the oil inlet 14 of the hydrostatic chamber 11 is first constrained by the sealing edge 12 of the hydrostatic chamber 11, and then enters the return groove 13 provided on the outer periphery of the sealing edge 12. This prevents the hydraulic oil from spreading to the surface of the guide rail base. Simultaneously, this application provides a sealing gasket 20 around the outer periphery of the return groove 13, and this sealing gasket 20 is higher than the first surface 121 of the sealing edge 12. When the hydrostatic guide rail slider 100 is installed with the hydrostatic guide rail, the sealing gasket 20 will contact the surface of the hydrostatic guide rail before the sealing edge 12 and generate a certain amount of compression. This sealing gasket 20 can completely prevent hydraulic oil from leaking outwards to the surface of the guide rail base. Furthermore, the sealing gasket 20 surrounding the outer periphery of the return groove 13 can also prevent external dust, iron filings, and other impurities from entering the return groove 13 and the hydrostatic chamber 11, ensuring the cleanliness of the hydraulic oil. Furthermore, in this application, through the combined action of the oil sealing edge 12, the oil return groove 13, and the sealing gasket 20, the oil return hole 15 is connected to the oil return groove 13, and the hydraulic oil overflowing from the static pressure chamber 11 can quickly return due to its own pressure, reducing hydraulic oil residue and thus avoiding waste caused by hydraulic oil accumulation and overflow; it also prevents hydraulic oil from polluting the working environment around the equipment.

[0025] In this application, the principle of rapid oil return is as follows: the sealing gasket 20 forms a tight barrier on the outer periphery of the oil return groove 13 and the surface of the guide rail base. When the hydraulic oil overflowing from the static pressure chamber 11 through the oil inlet 14 enters the oil return groove 13, the hydraulic oil is confined in a relatively limited space. Due to the limited flow capacity of the oil return hole 15, and the continuous inflow of hydraulic oil, a small positive pressure slightly higher than atmospheric pressure is established in the oil return groove 13. This small positive pressure becomes the driving force for pressure oil return. This driving force can actively and directionally push the hydraulic oil in the oil return groove 13 toward the oil return hole 15, thereby realizing oil return.

[0026] In other words, this application provides an oil return groove 13 around the outer periphery of the static pressure chamber 11, and a sealing gasket 20 around the outer periphery of the oil return groove 13, with the sealing gasket 20 being higher than the first surface 121 of the sealing edge 12. This arrangement allows the hydraulic oil overflowing from the oil inlet 14 of the static pressure chamber 11 to flow back quickly via the oil return groove 13 and the oil return hole 15, forming a highly efficient and directional closed-loop return flow. This significantly improves the oil return efficiency, avoids hydraulic oil waste and contamination, and fundamentally ensures the cleanliness of the hydraulic oil and the reliable operation of the hydraulic system.

[0027] Furthermore, the sealing gasket 20 includes either a fluororubber gasket or a nitrile rubber gasket. Because fluororubber and nitrile rubber have excellent oil resistance, they can resist the corrosion of hydraulic oil in the hydrostatic guide rail, preventing swelling, cracking, or performance degradation after long-term contact with oil, thus preventing oil leakage due to seal failure. At the same time, fluororubber and nitrile rubber have outstanding wear resistance and anti-aging properties, able to withstand slight friction between the hydrostatic guide rail slider 100 and the hydrostatic guide rail during operation, as well as environmental aging (such as temperature changes and oxidation) during long-term use, reducing the frequency of gasket 20 replacement and thus lowering maintenance costs. In addition, because fluororubber and nitrile rubber also have good elasticity and deformation capacity, they can tightly fit the outer periphery of the oil return groove 13. Even with minor machining errors or assembly gaps, they can fill the gaps through their own deformation, strengthening the sealing effect. Combined with a structural design higher than the sealing edge 12, this provides double protection against hydraulic oil leakage. Nitrile rubber, in particular, can control costs while ensuring performance and lifespan. Fluororubber offers higher reliability when facing stringent requirements such as high temperatures, heavy loads, and special oils. Therefore, fluororubber gaskets are preferred in this application. Of course, in other embodiments of this application, gaskets 20 made of other materials can also be used, as long as they meet the requirements of oil resistance, wear resistance, and good elasticity.

[0028] Furthermore, the height of the sealing gasket 20 above the first surface 121 of the oil sealing edge 12 is greater than or equal to 0.05 mm. For example, this height can be 0.05 mm, 0.06 mm, 0.09 mm, or 1 mm, etc. This dimension is determined based on the closed-loop oil return requirements of the structure, the characteristics of the fluororubber material, and the dynamic operating conditions of the hydrostatic guide rail. On the one hand, the elastic deformation of the fluororubber can form a slight interference contact, filling the tiny gap between the sealing gasket 20 and the guide rail surface, ensuring that 100% of the hydraulic oil flows into the oil return groove 13 to guarantee the closed-loop oil return; on the other hand, it can accommodate the slight up-and-down floating displacement of the hydrostatic guide rail slider 100 during dynamic movement, while offsetting the wear of the sealing gasket 20 during long-term use and the swelling caused by the hydraulic oil, maintaining long-term sealing performance. It is worth noting that in the actual selection process, it is necessary to avoid excessive height, which would cause the sealing gasket 20 to be over-compressed, generating huge sliding friction resistance, thereby affecting the sensitivity and accuracy of the hydrostatic guide rail movement. It may also lead to accelerated fatigue aging of the sealing gasket 20, resulting in permanent deformation and loss of its anti-leakage effect on the hydraulic oil. In this application, the thickness of the sealing gasket 20 above the first surface 121 is preferably 0.05 mm. This ensures a reliable seal, creates a sealed environment, and improves rigidity while minimizing sliding friction resistance, thus balancing the high rigidity, high precision, and long life requirements of the hydrostatic guide rail.

[0029] like Figure 6 As shown, the slider body 10 includes a mounting groove 16, which surrounds the outer periphery of the oil return groove 13. The sealing gasket 20 is bonded to the mounting groove 16. This configuration provides a precise and constrained mounting position for the sealing gasket 20, preventing it from shifting or misaligning during assembly or operation, ensuring it remains in the preset sealing position, and guaranteeing stable sealing performance. Furthermore, in this application, the sealing gasket 20 is bonded to the mounting groove 16, allowing it to fit tightly against the inner wall of the groove 16. Combined with the limiting effect of the mounting groove 16, this effectively resists external forces such as vibration and hydraulic oil impact during the operation of the hydrostatic guide slider 100, preventing the sealing gasket 20 from falling off and improving long-term reliability. Specifically, a special adhesive is used for bonding during actual installation.

[0030] Furthermore, the structure of the mounting groove 16 allows the gasket 20 to be embedded and fixed after installation. Combined with the tightness of the adhesive, this significantly reduces the assembly gap between the gasket 20 and the slider body 10, preventing hydraulic oil leakage from the gap and providing double protection along with the sealing effect of the gasket 20 itself. At the same time, the guiding function of the mounting groove 16 simplifies the assembly process of the gasket 20 and eliminates the need for complex positioning tooling. The adhesive method is simple to operate and, compared with bolt fixing and other methods, is more suitable for small components such as the gasket 20, which not only improves assembly efficiency but also reduces production and maintenance costs.

[0031] like Figure 1 , Figure 5 as well as Figure 7 As shown, the hydrostatic guide rail slider 100 also includes a throttle 30, which is mounted on the first side 101 of the slider body 10. The throttle 30 is used to regulate the pressure of the hydraulic oil entering the hydrostatic chamber 11. For example, the throttle 30 can be a diaphragm-type throttle or the like. The throttle 30 can provide pressure regulation for the hydrostatic chamber 11, thereby automatically maintaining a constant and uniform oil film thickness between the hydrostatic guide rail slider 100 and the hydrostatic guide rail under varying external loads, ensuring extremely high motion accuracy and rigidity. Furthermore, regulating the pressure through the throttle 30 can prevent the hydraulic oil from causing impact damage to components such as the hydrostatic chamber 11 and the oil inlet 14 due to excessive pressure in the hydraulic system.

[0032] In this application, the throttle 30 is installed on the first side 101 of the slider body 10, achieving an integrated design. The throttle 30 is very close to the static pressure chamber 11, the oil circuit is short, the transmission and adjustment of pressure signals have almost no delay, and the dynamic response performance is good. At the same time, since the throttle 30 is installed on the first side 101 of the slider body 10, pressure adjustment, maintenance, or replacement can be performed without disassembling the entire slider. Compared with the built-in design, this greatly simplifies the maintenance process, shortens downtime, and reduces maintenance costs.

[0033] like Figures 4 to 6 As shown, the slider body 10 also includes a second side 102 and a third side 103 disposed opposite to the second side 102. Both the second side 102 and the third side 103 are perpendicular to the first side 101. The static pressure chamber 11 includes a first static pressure chamber 111 and a second static pressure chamber 112. The first static pressure chamber 111 is disposed on the second side 102, and the second static pressure chamber 112 is disposed on the third side 103.

[0034] In some applications, hydrostatic guides can be open hydrostatic guides, where the hydrostatic cavity 11 and oil sealing edge 12 are only provided on one plane facing the hydrostatic guide base on the slider body 10. Hydraulic oil forms an oil film in this single gap, generating an upward supporting force to balance the weight of the workpiece and the slider, as well as the downward cutting force. However, this open hydrostatic guide has a drawback: if a heavy object is biased towards one end of the slider, or if it is subjected to a horizontal force, a torque will be generated that causes the slider to flip or lift. Because there is no oil film constraint on the open side, the slider will tilt slightly, resulting in uneven oil film thickness, or even edge contact, leading to loss of accuracy. In other applications, hydrostatic guides can be closed hydrostatic guides. These guides can have hydrostatic cavities 11 on multiple surfaces of the slider body 10, allowing them to withstand multi-directional composite loads. For example, downward forces are borne by the lower oil film, upward forces by the upper oil film, and horizontal forces by the side oil films.

[0035] In this application, Figure 5 and Figure 6 The diagram illustrates a configuration where a first static pressure chamber 111 and a second static pressure chamber 112 are respectively provided on the second side 102 and the third side 103 of the slider body 10. The throttle 30 can independently provide pressure regulation for the first static pressure chamber 111 and the second static pressure chamber 112, thereby automatically maintaining a constant and uniform oil film thickness between the static pressure guide slider 100 and the static pressure guide under varying external loads, ensuring extremely high motion accuracy and rigidity. The provision of the first static pressure chamber 111 and the second static pressure chamber 112 on the second side 102 and the third side 103 respectively forms a symmetrical oil film support structure, capable of simultaneously withstanding horizontal loads (such as thrust and lateral impact) from both sides, and offsetting the offset tendency of the static pressure guide slider 100 during operation through oil film pressure balance, avoiding tilting caused by unilateral force.

[0036] like Figure 5 and Figure 6As shown, an oil inlet 1011, a first oil outlet 1012, and a second oil outlet 1013 are sequentially arranged on the first side 101. The throttle 30 includes an oil inlet channel 31 and an oil outlet channel 32. The oil inlet 1011 is connected to the oil inlet channel 31, the first oil outlet 1012 is connected to the oil outlet channel 32, and the second oil outlet 1013 is connected to the gap formed between the throttle 30 and the first side 101. Specifically, in this application, a single throttle 30 is used. Through the internal oil passage design, oil supply and throttling are achieved for the first static pressure chamber 111 and the second static pressure chamber 112 respectively, saving space in the hydraulic system, reducing production costs, and improving the reliability of the hydraulic system. Meanwhile, this design enables the first static pressure chamber 111 to form an active throttling control and the second static pressure chamber 112 to form a gap-assisted throttling staged oil supply mode. The throttle 30 can directly and accurately adjust the oil pressure of the first static pressure chamber 111, while using the throttling effect of the gap to buffer the pressure fluctuation of the second static pressure chamber 112. When there is a difference in the load borne by the second side 102 and the third side 103, the structure can adaptively adjust the pressure of the two oil supply paths to avoid oil film rupture caused by sudden load changes on one side, and ensure that the thickness of the oil film on both sides matches the load.

[0037] Furthermore, the slider body 10 is provided with an oil inlet channel 17, which is connected to the oil inlet hole 14. The oil inlet channel 17 includes a first oil inlet section 171, a second oil inlet section 172, and a third oil inlet section 173. The first oil inlet section 171 is connected to the oil inlet channel 31; one end of the second oil inlet section 172 is connected to the first oil outlet 1012, and the other end of the second oil inlet section 172 is connected to the first static pressure chamber 111; one end of the third oil inlet section 173 is connected to the second oil outlet 1013, and the other end of the third oil inlet section 173 is connected to the second static pressure chamber 112. The three-section design of the oil inlet channel 17 (the first oil inlet section 171 connects to the main path of the throttle 30, the second oil inlet section 172 and the third oil inlet section 173 respectively connect to the two static pressure chambers 11), combined with the oil inlet 1011, the first oil outlet 1012 and the second oil outlet 1013 centrally located on the first side 101, makes the oil path symmetrically correspond to the static pressure chambers 11 on the second side 102 and the third side 103. This layout can achieve stable and uniform oil supply to the static pressure chambers 11 on both sides, ensure that the oil film pressure on both sides tends to be consistent, counteract the lateral offset tendency of the static pressure guide slider 100 during operation, solve the attitude tilting problem that is easily caused by single-sided oil supply, and improve the guiding accuracy and motion stability.

[0038] like Figures 1 to 6As shown, the slider body 10 is also provided with a main oil inlet 191 connected to an external oil pipe and a main oil outlet 192 connected to an oil tank. The main oil inlet 191 is connected to the oil inlet hole 14, and the main oil outlet 192 is connected to the oil return hole 15. This arrangement achieves centralized oil supply and centralized oil return in the hydraulic system, thereby ensuring the reliability of the system operation. This application illustrates a case where the slider body 10 is provided with two static pressure chambers 11. The external high-pressure oil pump (not shown in the figure) only needs to be connected to the main oil inlet 191 through a single external oil pipe, eliminating the need for a separate oil pipe for each static pressure chamber 11. This greatly simplifies the layout of the external hydraulic system and reduces potential leakage points.

[0039] Furthermore, each return oil groove 13 collects the hydraulic oil overflowing from each static pressure chamber 11, and through the return oil hole 15 and the return oil flow channel 18 connected to the return oil hole 15, it finally converges into the total oil outlet 192, and then flows back to the oil tank (not shown in the figure). This establishes an efficient and orderly return oil path. Simultaneously, the total oil outlet 192 prevents hydraulic oil leakage, avoiding contamination of the machine tool's working environment and preventing damage to other precision components. Specifically, in this application, the total oil inlet 191 and the total oil outlet 192 are located on the third side 103. Specifically, since the load on the second static pressure chamber 112 located on the third side 103 is less than that on the first static pressure chamber 111 located on the second side 102, that is, the area of ​​the second static pressure chamber 112 is smaller than the area of ​​the first static pressure chamber 111. This arrangement improves the space utilization and structural compactness of the hydraulic system.

[0040] Furthermore, in this application, Figure 6 The second oil inlet section 172 is shown to include three straight oil passage sections, one of which is machined from the surface of the slider body 10; and this application also provides an oil return channel 18 for connecting the oil return hole 15 and the main oil outlet 192, such as Figure 5 and Figure 6As shown, the oil return holes 15 located on the second side 102 and the third side 103 are symmetrically arranged, which simplifies the machining of the oil return channel 18 and improves the machining efficiency and accuracy of the oil channel. The oil return channel 18 includes a vertical section and a side section, wherein the side section is machined from the surface of the slider body 10. Therefore, in this application, when machining the oil inlet channel 17 and the oil return channel 18 inside the slider body 10, process holes 50 for channel machining may be left on the slider body 10. Therefore, in this application, set screws 60 can be used to seal the process holes 50 through threaded connection, thereby ensuring the sealing of the oil inlet channel 17 and the oil return channel 18. Of course, in other embodiments of this application, other sealing structures can also be used to seal the process holes 50 to ensure the sealing of the oil inlet channel 17 and the oil return channel 18. Of course, in other embodiments of this application, the oil inlet channel 17 and the oil return channel 18 can be machined using a straight and oblique oil passage method, thus reducing the occurrence of process holes 50 on the slider body 10. The specific oil passage machining method is not limited in this application; it can be selected according to actual needs.

[0041] like Figure 1 , Figure 4 as well as Figure 5 As shown, the hydrostatic guide rail slider 100 also includes a first sealing ring 40 and a second sealing ring 41. The first sealing ring 40 is located at the main oil inlet 191, and the second sealing ring 41 is located at the main oil outlet 192. This arrangement ensures that the first sealing ring 40 and the second sealing ring 41 tightly fit the mating surfaces of the interface and the oil pipe, filling the assembly gap and preventing hydraulic oil leakage from the interface. This not only avoids oil waste and pollution of the working environment but also reduces pressure loss in the hydraulic system due to hydraulic oil leakage, ensuring efficient oil supply and return. Simultaneously, the sealing rings, while preventing hydraulic oil leakage, also act as dust and impurity protectors, thus protecting the precision components inside the hydraulic system. Furthermore, the main oil inlet 191 must withstand the high input pressure of the hydraulic system, and the main oil outlet 192 must cope with pressure fluctuations during oil return. The first sealing ring 40 and the second sealing ring 41 have good pressure resistance and elasticity, and can maintain the sealing shape under high pressure conditions. They will not fail due to pressure impact. At the same time, their elastic deformation ability can compensate for minor errors in interface assembly, ensuring that the sealing effect does not decrease during long-term use, enhancing the stability and durability of the interface connection, and reducing the frequency of maintenance.

[0042] Recombined Figures 1 to 7 As shown, this application also provides a hydraulic system including the aforementioned hydrostatic guide slider 100. Therefore, the hydraulic system provided in this embodiment includes all the technical effects of the aforementioned hydrostatic guide slider 100. Since the technical effects of the hydrostatic guide slider 100 have been described in detail above, they will not be repeated here.

[0043] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects: This application provides an oil return groove 13 around the outer periphery of the static pressure chamber 11, and a sealing gasket 20 around the outer periphery of the oil return groove 13, with the sealing gasket 20 being higher than the first surface 121 of the sealing edge 12. This arrangement allows hydraulic oil overflowing from the oil inlet 14 of the static pressure chamber 11 to quickly return via the oil return groove 13 and the oil return hole 15, forming a highly efficient and directional closed-loop return flow. This significantly improves oil return efficiency, avoids hydraulic oil waste and contamination, and fundamentally ensures the cleanliness of the hydraulic oil and the reliable operation of the hydraulic system.

[0044] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0045] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0046] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A hydrostatic guide rail slider, characterized in that, include: The slider body (10) has a static pressure cavity (11) on at least one side, an oil sealing edge (12) on the outer periphery of the static pressure cavity (11), an oil return groove (13) on the outer periphery of the oil sealing edge (12), an oil inlet hole (14) communicating with the static pressure cavity (11) on the slider body (10), and an oil return hole (15) communicating with the oil return groove (13) on the slider body (10). A sealing gasket (20) is disposed around the outer periphery of the oil return groove (13) and above the first surface (121) of the oil sealing edge (12).

2. The hydrostatic guide rail slider according to claim 1, characterized in that, The sealing gasket (20) includes a fluororubber sealing gasket or a nitrile rubber sealing gasket.

3. The hydrostatic guide rail slider according to claim 1, characterized in that, The height of the sealing gasket (20) above the first surface (121) of the sealing edge (12) is greater than or equal to 0.05 mm.

4. The hydrostatic guide rail slider according to claim 1, characterized in that, The slider body (10) includes a mounting groove (16), which surrounds the outer periphery of the oil return groove (13), and the sealing gasket (20) is bonded to the mounting groove (16).

5. The hydrostatic guide rail slider according to claim 1, characterized in that, The hydrostatic guide rail slider (100) also includes a throttle (30), which is installed on the first side (101) of the slider body (10) and is used to regulate the pressure of the hydraulic oil entering the hydrostatic chamber (11).

6. The hydrostatic guide rail slider according to claim 5, characterized in that, The slider body (10) further includes a second side (102) and a third side (103) disposed opposite to the second side (102). The second side (102) and the third side (103) are both perpendicular to the first side (101). The static pressure chamber (11) includes a first static pressure chamber (111) and a second static pressure chamber (112). The first static pressure chamber (111) is disposed on the second side (102), and the second static pressure chamber (112) is disposed on the third side (103).

7. The hydrostatic guide rail slider according to claim 6, characterized in that, An oil inlet (1011), a first oil outlet (1012), and a second oil outlet (1013) are sequentially provided on the first side surface (101). The throttle (30) includes an oil inlet channel (31) and an oil outlet channel (32). The oil inlet (1011) is connected to the oil inlet channel (31), the first oil outlet (1012) is connected to the oil outlet channel (32), and the second oil outlet (1013) is connected to the gap formed between the throttle (30) and the first side surface (101). The slider body (10) is provided with an oil inlet channel (17), which is connected to the oil inlet hole (14). The oil inlet channel (17) includes: The first oil inlet section (171) is connected to the oil inlet channel (31); The second oil inlet section (172) has one end connected to the first oil outlet (1012) and the other end connected to the first static pressure chamber (111). The third oil inlet section (173) is connected at one end to the second oil outlet (1013) and at the other end to the second static pressure chamber (112).

8. The hydrostatic guide rail slider according to any one of claims 1 to 7, characterized in that, The slider body (10) is also provided with a main oil inlet (191) connected to an external oil pipe and a main oil outlet (192) connected to an oil tank. The main oil inlet (191) is connected to the oil inlet hole (14), and the main oil outlet (192) is connected to the oil return hole (15).

9. The hydrostatic guide rail slider according to claim 8, characterized in that, The hydrostatic guide rail slider (100) also includes a first sealing ring (40) and a second sealing ring (41). The first sealing ring (40) is located at the main oil inlet (191), and the second sealing ring (41) is located at the main oil outlet (192).

10. A hydraulic system, characterized in that, The hydraulic system includes a hydrostatic guide rail slider (100) as described in any one of claims 1 to 9.

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