Hydrostatic pressure guide mechanism and oil recovery system

Abstract

The invention discloses a hydrostatic pressure guide mechanism and an oil recovery system, and belongs to the technical field of machine tool machining. The hydrostatic pressure guide mechanism comprises a main body provided with a forward vertical chute, a backward horizontal chute and a mounting groove arranged behind the vertical chute; the cross beam is provided with a transmission shaft and a horizontal sliding rail matched with the horizontal sliding groove; the hydrostatic pressure system comprises an oil supply assembly and a plurality of static pressure assemblies; wherein the first driving motor is connected with the ram and drives the ram to vertically move in the vertical sliding groove; the transmission shaft guides the main body to move horizontally to drive the ram to move horizontally. Multi-dimensional movement of a guide object is achieved, the structural design is simple, the good hydrostatic pressure effect is achieved while high-precision movement is achieved, and the problems that due to assembly errors, the oil film thickness is not uniform, and the guide rail is not uniform in stress are solved.

Description

Technical Field

[0001] This invention relates to the field of machine tool processing technology, and in particular to a hydrostatic guiding mechanism and an oil recovery system. Background Technology

[0002] An end mill is a tool support and positioning device mounted on a vertical lathe or some CNC lathes. Its spindle is arranged vertically, and the end mill is usually mounted on a column or beam. It can move vertically or horizontally to machine the workpiece. To ensure the stability and consistency of machining accuracy of the end mill during the machining process, precise movement and positioning are required, making the moving guide rails crucial.

[0003] Hydrostatic guideways, as a high-performance type of guideway, have numerous advantages such as low friction coefficient, high motion accuracy, good vibration resistance, and strong load-bearing capacity, making them widely used in precision machine tools, heavy machinery, and aerospace fields. The tool post utilizes hydrostatic guideways to ensure machining requirements are met.

[0004] The manufacturing of hydrostatic guideways involves complex machining processes and high-precision assembly techniques. Key components such as the oil chamber and throttle require extremely high machining precision, ensuring dimensional accuracy, shape accuracy, and positional accuracy between components. Failure to do so will directly affect the formation of the oil film and its load-bearing capacity. For example, the surface roughness of the oil chamber needs to reach the nanometer level to ensure uniform oil film distribution and stability. Simultaneously, during the assembly process, the parallelism and straightness of the guideways must be precisely controlled to avoid uneven oil film thickness and uneven stress on the guideways due to assembly errors, which would increase scrap rates and rework costs during manufacturing.

[0005] Hydrostatic guide rails require a large amount of oil to form a hydrostatic film during operation. A hydrostatic chamber is formed on one of the sliding surfaces, and oil is supplied to this chamber. The load is transferred between the sliding surfaces through the hydrostatic pressure. In other words, only oil is held between the sliding surfaces, making them non-contact, thus significantly reducing sliding resistance. Furthermore, the hydrostatic guide mechanism maintains an oil film from rest to movement, enabling it to support high loads and stably achieve low friction. However, current oil supply pipelines have inconsistent output flow rates and pressures, requiring flow valves to be connected to each hydrostatic block for quantitative control. Moreover, the oil recovery system also presents several problems. On the one hand, some recovery systems are poorly designed, resulting in low oil recovery efficiency. Oil supplied to the static pressure chamber is discharged from the outer periphery towards the outside of the sliding structure. This discharged oil cannot be recovered and overflows, potentially reaching the sliding guide mechanism and causing adverse effects. Thus, a large amount of oil remains in the pipeline or cannot effectively return to the oil tank, resulting in resource waste. On the other hand, the recovered oil often contains a large amount of impurities, metal fragments, and moisture. If not effectively filtered and purified, its reintroduction into the oil supply system will exacerbate guide rail wear and clog the throttle, affecting the normal operation and service life of the guide rails.

[0006] Because of the aforementioned technical problems, hydrostatic guides are subject to certain limitations in practical applications. Therefore, conducting research on improving the manufacturing technology of hydrostatic guides and optimizing the oil recovery system has important practical significance and application value. Summary of the Invention

[0007] In view of this, the main objective of the present invention is to provide a hydrostatic guiding mechanism and an oil recovery system that enables multidimensional movement of the guided object. The structure is simple and has a good hydrostatic effect while meeting the requirements of high-precision movement, avoiding the problems of uneven oil film thickness and uneven force on the guide rail caused by assembly errors.

[0008] To achieve the above objectives, as a first aspect of the present invention, a hydrostatic guiding mechanism is proposed, comprising: a main body having a forward-facing vertical slide groove, a rearward-facing horizontal slide groove, and a mounting groove located behind the vertical slide groove; a slide block housed in the vertical slide groove, and a first drive motor housed in the mounting groove; a crossbeam having a drive shaft and a horizontal slide rail that matches the horizontal slide groove; the main body being fixed on the drive shaft, and the horizontal slide groove cooperating with the horizontal slide rail; a hydrostatic system including an oil supply assembly and multiple hydrostatic assemblies; the oil supply assembly being installed on one side of the main body and connected to the multiple hydrostatic assemblies through multiple output pipes; the hydrostatic assemblies being respectively installed in the vertical slide groove and the horizontal slide groove; wherein, the first drive motor is connected to the slide block and drives the slide block to move vertically within the vertical slide groove; the drive shaft guides the main body to move horizontally, thereby driving the slide block to move horizontally.

[0009] In a second aspect, the present invention provides an oil recovery system for use in the aforementioned hydrostatic guiding mechanism for oil recovery. The oil recovery system includes: a first recovery component located at the bottom of the main body, a second recovery component located at both ends of the horizontal slide rail, and a third recovery component located on the crossbeam. The first recovery component scrapes away oil overflowing from the slide block during its up-and-down movement and collects it in the third recovery component. The second recovery component scrapes away oil overflowing from the horizontal slide rail and collects it in the third recovery component. The third recovery component recovers the oil from the first and second recovery components.

[0010] Based on the above technical solution, it can be seen that the technical solution of the present invention has at least one of the following beneficial effects compared with the prior art: 1. Improved Motion Precision: The "U"-shaped structure and fully enclosed design of the main body of the hydrostatic guide structure prevent instability of the ram's long diameter during operation due to center of gravity or load issues. It also increases the ram's bending stiffness and improves overall rigidity. Combined with precisely arranged hydrostatic components, it ensures smooth reciprocating motion of the ram. The use of oil-filled linear roller bearings significantly reduces frictional resistance, providing strong support for high-precision machining.

[0011] 2. Optimized oil supply and return: The spiral design of the damping pipe assembly replaces the existing technology that uses flow valves to control the flow rate or pressure of oil in each pipeline. The structure is stable and reduces problems caused by the adjustment error of the flow valve. Moreover, there is only one input oil line, which simplifies the pipeline design compared with the existing technology, realizes the balance of flow and pressure of each static pressure component, and eliminates the problem of uneven oil supply. The scraper and guide plate efficiently recover oil, reduce resource waste and environmental pollution, and maintain the stability of the oil film.

[0012] 3. Enhanced structural stability: The upper slide groove radially clamps the upper slide rail, while the lower slide groove clamps the lower slide rail longitudinally and radially, effectively preventing forward tipping due to changes in the center of gravity caused by load or the movement of the slide itself on the horizontal axis; the vertical multi-pulley layout and the synergy of multiple hydrostatic components prevent the slide block from tilting and improve motion stability; the ingenious combination of the slide groove and hydrostatic components provides all-round support for the main body of the hydrostatic guiding structure, preventing the risk of tipping.

[0013] 4. Improved vibration resistance: The oil film formed by the hydrostatic components has excellent vibration absorption and resistance, significantly reducing processing vibration and ensuring the surface quality of the workpiece.

[0014] 5. Enhanced ease of maintenance: The scraper and guide plate efficiently intercept and recover oil, reducing the frequency of maintenance and refilling; the independent adaptability of the damping tube assembly further simplifies the maintenance process.

[0015] 6. Cost control and life extension: The casting body is combined with local machining to balance cost and precision; the optimized oil supply and return system reduces operating costs and improves the life of the guide rail.

[0016] 7. Emphasis on both innovation and practicality: The fully enclosed structure, multi-static soft belt and damping tube assembly design innovatively solves the problems of traditional hydrostatic guide rails, making it suitable for precision machine tools, heavy machinery and other fields, with strong practicality.

[0017] 8. Environmentally friendly: The efficient oil recovery system reduces leaks and pollution, which aligns with the concept of green environmental protection.

[0018] It should be understood that the description in the Summary of the Invention is not intended to limit the key or essential features of the embodiments of the present invention, nor is it intended to restrict the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly described below.

[0020] Figure 1 This is a schematic diagram of the hydrostatic guiding mechanism according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the main body of the hydrostatic guiding mechanism according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the main body of the hydrostatic guiding mechanism according to an embodiment of the present invention. Figure 2 ; Figure 4 This is a schematic diagram of the structure of the main body of the hydrostatic guiding mechanism according to an embodiment of the present invention. Figure 3 ; Figure 5 This is a schematic diagram of the crossbeam structure of the hydrostatic guide mechanism according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the first recovery component of the hydrostatic guiding mechanism according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the scraper structure of the hydrostatic guiding mechanism according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of the second recovery component and the static pressure component of the hydrostatic guiding mechanism according to an embodiment of the present invention. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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.

[0022] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the embodiments of the invention. The singular forms “a,” “the,” and “the” as used in the embodiments of the invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0023] The first part of this invention proposes a hydrostatic guiding mechanism, such as... Figure 1 and Figure 2 As shown, the system includes: a main body 100, which has a forward-facing vertical slide groove 110, a rearward-facing horizontal slide groove 120, and a mounting groove 130 located behind the vertical slide groove 110; a slide block is built into the vertical slide groove 110, and a first drive motor is built into the mounting groove 130; a crossbeam 200, which has a drive shaft 210 and a horizontal slide rail 220 that matches the horizontal slide groove 120; the main body 100 is fixed on the drive shaft 210, and the horizontal slide groove 120 cooperates with the horizontal slide rail 220; a hydrostatic system 300, which includes an oil supply assembly 310 and multiple hydrostatic assemblies 320; the oil supply assembly 310 is installed on one side of the main body and is connected to multiple hydrostatic assemblies 320 through multiple output pipes 311; the hydrostatic assemblies 320 are respectively installed in the vertical slide groove 110 and the horizontal slide groove 120; wherein, the first drive motor is connected to the slide block and drives the slide block to move vertically within the vertical slide groove 110; the drive shaft 210 guides the main body 100 to move horizontally, thereby driving the slide block to move horizontally. The main body 100 is cast in one piece, with vertical slide 110, horizontal slide 120, and mounting groove 130 integrally formed. This is because casting is cost-effective and the overall structure is stable. Several through holes are provided on the main body 100 to facilitate pipeline layout and reduce the weight of the main body 100, thereby reducing the pressure on the crossbeam 200. This conforms to the lightweight and integrated design and also increases the service life of the mechanism.

[0024] Specifically, such as Figure 4As shown, the first drive motor is fixed in the mounting groove 130, and its output end is connected to one side of the slide block, driving the slide block to reciprocate up and down within the vertical slide groove 110. To enable the slide block to move horizontally as well, the main body 100 is also provided with a horizontal slide groove 120, which is fixed in conjunction with the horizontal slide rail 220 of the crossbeam 200. A second drive motor is provided, and its output end is connected to the transmission shaft 210, driving the transmission shaft 210 to rotate and guiding the main body 100, which is fixed to the transmission shaft 210, to move horizontally along the horizontal slide rail 220, ultimately realizing the movement of the slide block in both the horizontal and vertical directions.

[0025] In a preferred embodiment, such as Figure 2 As shown, a pair of baffles 140 are fixed between the vertical slide groove 110 and the mounting groove 130. The mounting groove 130 is located behind the baffles 140. A mounting bracket 150 for fixing the first drive motor is provided at the top of the mounting groove 130. The mounting bracket 150 is fixed to the main body 100 with screws, or it is integrally formed with the main body 100. A through hole is provided at the top of the mounting bracket 150. The output shaft of the first drive motor extends into the mounting groove 130 through the through hole and connects to a component for fixing the motor on the side of the slide block, driving the slide block to move up and down within the vertical slide groove 110. The first drive motor is fixed to the top of the mounting bracket 150 with screws. By fixing a baffle 140 to each of the two mounting surfaces within the vertical slide groove 110, with a gap between the baffles 140, the output end of the drive motor fixed to the top of the mounting bracket 150 can drive the slide block to move up and down. The height of the mounting bracket 150 is adjusted according to the length of the slide block's movement path. By setting the side walls of the hollow main body 100 and the mounting bracket 150, the drive equipment is stabilized while reducing weight.

[0026] In a preferred embodiment, two pairs of slide rails are provided on the opposing mounting surfaces inside the vertical slide rail 110. Static pressure components 320 are installed on both slide rails and the front side of the baffle 140. To achieve hydrostatic pressure, static pressure components 320 are provided at the contact points between the ram and the vertical slide rail 110. Multiple static pressure components 320 are symmetrically arranged to ensure that the ram does not tilt due to its center of gravity during movement, thus ensuring the stability of the ram's movement.

[0027] In a preferred embodiment, such as Figure 3As shown, the hydrostatic assembly 320 disposed within the vertical slide groove 110 includes a hydrostatic soft belt 321 and a linear auxiliary motion module 322. The hydrostatic soft belt 321 is installed at both the upper and lower ends of the slide rail and the front side of the baffle 140 on one side of the mounting surface inside the vertical slide groove 110; the linear auxiliary motion module 322 is installed at both the upper and lower ends of the slide rail on the other side of the mounting surface inside the vertical slide groove 110. The hydrostatic assemblies are installed on the same horizontal plane of the two slide rails on the same mounting surface, and at both the upper and lower ends of the slide rails. An oil film is applied to the contact surface between the hydrostatic assembly and the slide block, providing lubrication while maintaining a non-contact state, thereby significantly reducing sliding resistance and the coefficient of friction. The hydrostatic assembly employs a combination of sliding and rolling contact to ensure the ram's motion accuracy and rigidity. It uses an asymmetrical design, with the mounting surface inside the vertical groove 110 using sliding contact with a hydrostatic soft belt 321, and the corresponding surface using rolling contact with an oil-filled linear auxiliary motion module 322. This ensures the ram's accuracy in both directions during vertical movement, further reducing friction to accommodate higher motion precision. In this embodiment, the linear auxiliary motion module 322 uses linear roller bearings for hydrostatic setting.

[0028] In a preferred embodiment, such as Figure 4 As shown, the horizontal slide 120 includes an upper slide 121, a lower slide 122, and a shaft fixing member 123 disposed between the upper slide 121 and the lower slide 122. The upper slide 121 is an inverted L-shape, with a downwardly extending upper baffle at its top. Static pressure components 320 are respectively disposed on the inner side of the upper slide 121 and the inner side of the upper baffle. The lower slide 122 is C-shaped, with extended wings 124 on both sides of the main body 100. A downwardly extending lower baffle is provided at the bottom of the lower slide 122. Static pressure components are respectively disposed on the upper and lower inner sides of the lower slide 122 and the inner side of the lower baffle. The shaft fixing member 123 is sleeved on the drive shaft 210, guiding the main body 100 to move horizontally on the crossbeam 200. Figure 2 As shown, in order to increase the contact area between the contact body 100 and the crossbeam 200 and improve motion stability, an extended wing 124 was designed, which increases the force-bearing area of ​​the sliding groove 122.

[0029] In a preferred embodiment, such as Figure 1 As shown, the horizontal slide rail 220 has an upper slide rail 221 and a lower slide rail 222, which are respectively fitted into the upper slide groove 121 and the lower slide groove 122; the drive shaft is located between the upper slide rail 221 and the lower slide rail 222, and cooperates with the shaft fixing member 123 to guide the horizontal movement of the main body 100. An installation area 223 is provided between the upper slide rail 221 and the lower slide rail 222 for mounting the drive shaft. A second drive motor for driving the drive shaft is fixed to both sides of the crossbeam as needed.

[0030] Depend on Figure 1 and Figure 4 As shown, the horizontal slide groove and the horizontal slide rail are fitted together. The upper slide rail 221 extends into the upper slide groove 121. Since the force-bearing surfaces of the upper slide rail 221 and the upper slide groove 121 are on the inner side of the upper slide groove 121 and the inner side of the upper baffle, the first and second static pressure components are horizontally installed at the corresponding positions to effectively prevent the main body 100 from tipping forward due to load or other reasons. The lower slide rail 222 extends into the lower slide groove 122. Since the force-bearing surfaces of the lower slide rail 222 and the lower slide groove 122 are on the various inner sides of the lower slide groove 122, namely the inner side of the lower baffle, the inner side of the bottom of the lower slide groove and the inner side of the lower baffle at the same level, the top of the lower slide groove, and the bottom of the lower slide groove, the third, fourth, fifth, and sixth static pressure components are respectively installed at the corresponding positions. Under the action of the static pressure components, the upper and lower slide rails achieve hydrostatic pressure, reduce friction, and guide the main body 100 on the crossbeam.

[0031] In a preferred embodiment, such as Figure 8 As shown, each static pressure component 320 disposed within the horizontal slide groove 120 includes a static pressure block 323 and a static pressure mounting plate 324 for mounting the static pressure block 323. The static pressure mounting plate 324 clamps and fixes the static pressure block 323 to the upper slide groove 121 and the lower slide groove 122 using screws. The first static pressure component is disposed on the inner side of the upper slide groove 121, and the second static pressure component is disposed on the inner side of the upper baffle. According to the actual design, the static pressure mounting plate 324 of the second static pressure component can serve as the upper baffle, eliminating the need for an additional upper baffle. The third static pressure component is disposed on the inner side of the lower baffle, the fourth static pressure component is disposed on the inner side of the lower slide groove at the same level as the inner side of the lower baffle, the fifth static pressure component is disposed above the lower slide groove, and the sixth static pressure component is disposed below the lower slide groove. According to the actual design, the static pressure mounting plate 324 of the third static pressure component can serve as the lower baffle, eliminating the need for an additional lower baffle.

[0032] In a preferred embodiment, the top of the vertical chute 110 is provided with a cover plate 400 that surrounds the ram. The cover plate 400 and the vertical chute 110 cooperate to form a fully enclosed structure for the ram, which avoids instability caused by the center of gravity or load during operation due to the long diameter, and also increases the bending stiffness of the ram and improves the overall rigidity.

[0033] In a preferred embodiment, such as Figure 4As shown, the oil supply assembly 310 includes damping tubes 311, wherein multiple damping tubes 311 are horizontally arranged and sequentially placed on one or both sides of the main body 100; the input ends of the multiple damping tubes 311 are connected to a single input pipe 312, and the output ends of the multiple damping tubes 311 are respectively connected to multiple output pipes 313, which are respectively connected to multiple hydrostatic assemblies 320 one-to-one. Multiple sets of damping tubes can be set as needed, one set supplying oil to the hydrostatic blocks 323 of the hydrostatic assemblies in the horizontal slide groove, and another set supplying oil to the hydrostatic assemblies in the vertical slide groove. The two sets of damping tubes share a single input pipe, and the same number of output pipes are set according to the number of hydrostatic assemblies. The output pipes are connected to each hydrostatic block to supply oil to the hydrostatic assemblies. The damping tubes 311 are arranged in a spiral shape, and the damping effect on the lubricating fluid passing through the damping tubes 311 is determined by different diameters, pitches, and inclination angles. Depending on the required pipe length at the location of the static pressure block, different damping tubes 311 are adapted to ensure uniform flow or pressure at different static pressure blocks from the same input end. Furthermore, by using a spiral damping tube, the hysteresis generated during startup is eliminated, its peak value is reduced, and the oil output becomes more stable to meet the high-precision motion requirements.

[0034] In the design of the aforementioned hydrostatic guiding mechanism, the upper slide groove radially clamps the upper slide rail, while the lower slide groove clamps the lower slide rail longitudinally and radially, effectively preventing the problem of forward tipping due to changes in the center of gravity caused by load or its own movement on the horizontal axis; the vertical multi-pulley layout and the synergy of multiple hydrostatic components prevent the slide block from tilting and improve motion stability; the slide groove and hydrostatic components are cleverly combined to provide all-round support for the main body of the hydrostatic guiding structure and prevent the risk of tipping.

[0035] The second part of this invention proposes an oil recovery system for use in the aforementioned hydrostatic guiding mechanism to recover oil, such as... Figure 1 , Figure 2 and Figure 5 As shown, the oil recovery system includes: a first recovery component 500 located at the bottom of the main body, a second recovery component 600 located at both ends of the horizontal slide rail, and a third recovery component 700 located on the crossbeam 200; wherein, the first recovery component 500 scrapes the oil overflowing from the up-and-down movement of the slide block and collects it in the third recovery component 700; the second recovery component 600 scrapes the oil overflowing from the horizontal slide rail 220 and collects it in the third recovery component 700; the third recovery component 700 recovers the oil from the first recovery component 710 and the second recovery component 720.

[0036] In a preferred embodiment, the first recovery assembly 500 includes a guide groove 510 at the bottom of the sealing body 100, a first scraper 520 located at the bottom of the vertical chute 110 and on one side of the guide groove 510, and a second scraper 530 located on the other side of the guide groove 510 and opposite to the first scraper 520; the second recovery assembly 600 includes a third scraper 610 and a fourth scraper 620 respectively disposed at both ends of the horizontal chute 120, and an oil guide plate 630 for collecting oil; the third recovery assembly 700 includes a recovery trough disposed along the horizontal slide rail 220 and a connecting member for guiding overflowing oil.

[0037] In a preferred embodiment, such as Figure 6 As shown, the guide channel 510 is located at the bottom of the main body 100, and its shape matches the cross-section of the bottom of the main body 100. It seals the bottom of the mounting groove 130 and leaves a window for the vertical slide 110 to pass through. A sealing mounting groove 550 for mounting the first scraper 520 is provided around the window. A groove 560 for temporarily storing oil is provided on the outside of the sealing mounting groove 550. The groove 560 collects the oil and flows it into the main groove of the guide channel 510. The oil is discharged through the outlet 540 into the recovery groove of the third recovery component 700. The first scraper 520 and the second scraper 530 have the same structure. They are both frame-shaped, and their inner sides contact the periphery of the slide block. The shape of the scraper is as follows: Figure 7 As shown, one side has an installation part for mounting in a corresponding position, and the other side has an inclined oil scraping part. The oil scraping part scrapes oil around the ram and is assembled through mounting holes and snap-fit ​​rubber. The first scraper 520 is fixed inside the sealing mounting groove 550 by a pressure plate and screws. The first scraper 520 is inclined upward on the side of the ram it acts on. The second scraper 530 is located at the bottom of the sealing mounting groove 550, opposite to the first scraper 520, and is inclined downward on the side of the ram it acts on. That is, the oil scraping part of the first scraper 520 is vertically inclined upward on the side of the ram it acts on, while the oil scraping part of the second scraper 530 is vertically inclined downward.

[0038] In a preferred embodiment, such as Figure 8 As shown, the second recovery component 600 is located on the horizontal chute 120 of the main body 100, and is disposed at both ends of the horizontal chute 120. The horizontal chute 120 is provided with an upper chute 121 and a lower chute 122. A third scraper 610 and a fourth scraper 620 are installed above the side ends of the upper chute 121 and the lower chute 122, respectively. The third scraper 610 and the fourth scraper 620 are installed symmetrically back to back and are arranged parallel to the horizontal chute. They perform opposite scraping actions on the horizontal slide rail 220 of the crossbeam 200 to recover the overflowing oil. Behind the third scraper 610 and the fourth scraper 620, there is an oil guide plate 630 installed at the side end of the chute. The oil guide plate 630 is inclined and collects the recovered oil into the third recovery component 700 below.

[0039] In a preferred embodiment, such as Figure 5 As shown, the third recovery assembly 700 includes a first recovery tank 710, a second recovery tank 720, and a third recovery tank 730 arranged along a horizontal slide rail 220. A first baffle 740 is provided on the front side of the upper slide rail 221 and arranged horizontally along the slide rail, and a second baffle 750 is provided on both sides of the upper slide rail 221. A first connector 760 guides the oil in the first recovery tank 710 to the third recovery tank 730, and a second connector 770 guides the oil flowing from the first recovery tank 710 to the second recovery tank 720 to the third recovery tank 730.

[0040] The first recovery tank 710 is a groove formed by the upper slide rail 221 and the upper slide groove 121, together with the first baffle 740 and the second baffle 750. The third scraper 610 and the fourth scraper 620 within the upper slide groove 121 scrape away the oil overflowing from the upper slide rail 221 to collect the oil, and simultaneously collect the oil overflowing from the hydrostatic component. The second recovery tank 720 is located below the upper slide rail 221 to collect the oil overflowing from the hydrostatic component within the upper slide groove 121. The third recovery tank 730 is located below the lower slide rail 222 after it mates with the lower slide groove 122, and is used to collect the oil overflowing from the lower slide rail 222 scraped by the third scraper 610 and the fourth scraper 620 within the lower slide groove 122, as well as the oil overflowing from the hydrostatic component within the lower slide groove 122. The third recovery tank 730 is equipped with an oil pump extraction port 780, through which an oil pump mounted on the crossbeam 200 or externally mounted draws the oil back to the external circulating oil tank. The scraper is installed on the main body 100 and moves with the main body 100. The oil of the hydrostatic component on the main body 100 acts on the crossbeam 200 and remains on the hydrostatic block. During the movement of the main body 100, the scraper scrapes off the oil on the hydrostatic block and guides the scraped oil to the corresponding liquid recovery tank.

[0041] This hydrostatic guiding mechanism incorporates an oil recovery system because when oil acts on the hydrostatic components, it can remain on the components or corresponding slide rails during movement. Without collection, this would accelerate oil consumption or cause uneven oil film thickness, affecting the stability of the main body's operation on the crossbeam. Simultaneously, scrapers and guide plates efficiently intercept and recover oil, reducing maintenance and refill frequency. The optimized recovery system reduces leakage and contamination, while also extending the service life of the guide rails. In the aforementioned hydrostatic guiding mechanism design, the external oil circuit enters the damping pipe through the input pipe and is distributed to the various output pipes to the respective hydrostatic components as needed. Under gravity, the oil flows downwards, forming an oil film of a certain thickness. This oil film reduces friction and absorbs vibration. After being intercepted by the first or third recovery component, the downward-flowing oil reaches the collection point and finally flows out at the oil outlet or oil pump extraction port, achieving oil circulation.

[0042] Based on the above technical solution, it can be seen that the technical solution of the present invention has at least one of the following beneficial effects compared with the prior art: 1. Improved Motion Precision: The "U"-shaped structure and fully enclosed design of the main body of the hydrostatic guide structure prevent instability of the ram's long diameter during operation due to center of gravity or load issues. It also increases the ram's bending stiffness and improves overall rigidity. Combined with precisely arranged hydrostatic components, it ensures smooth reciprocating motion of the ram. The use of oil-filled linear roller bearings significantly reduces frictional resistance, providing strong support for high-precision machining.

[0043] 2. Optimized oil supply and return: The spiral design of the damping pipe assembly replaces the existing technology that uses flow valves to control the flow rate or pressure of oil in each pipeline. The structure is stable and reduces problems caused by the adjustment error of the flow valve. Moreover, there is only one input oil line, which simplifies the pipeline design compared with the existing technology, realizes the balance of flow and pressure of each static pressure component, and eliminates the problem of uneven oil supply. The scraper and guide plate efficiently recover oil, reduce resource waste and environmental pollution, and maintain the stability of the oil film.

[0044] 3. Enhanced structural stability: The upper slide groove radially clamps the upper slide rail, while the lower slide groove clamps the lower slide rail longitudinally and radially, effectively preventing forward tipping due to changes in the center of gravity caused by load or the movement of the slide itself on the horizontal axis; the vertical multi-pulley layout and the synergy of multiple hydrostatic components prevent the slide block from tilting and improve motion stability; the ingenious combination of the slide groove and hydrostatic components provides all-round support for the main body of the hydrostatic guiding structure, preventing the risk of tipping.

[0045] 4. Improved vibration resistance: The oil film formed by the hydrostatic components has excellent vibration absorption and resistance, significantly reducing processing vibration and ensuring the surface quality of the workpiece.

[0046] 5. Enhanced ease of maintenance: The scraper and guide plate efficiently intercept and recover oil, reducing the frequency of maintenance and refilling; the independent adaptability of the damping tube assembly further simplifies the maintenance process.

[0047] 6. Cost control and life extension: The casting body is combined with local machining to balance cost and precision; the optimized oil supply and return system reduces operating costs and improves the life of the guide rail.

[0048] 7. Emphasis on both innovation and practicality: The fully enclosed structure, multi-static soft belt and damping tube assembly design innovatively solves the problems of traditional hydrostatic guide rails, making it suitable for precision machine tools, heavy machinery and other fields, with strong practicality.

[0049] 8. Environmentally friendly: The efficient oil recovery system reduces leaks and pollution, which aligns with the concept of green environmental protection.

[0050] The foregoing has described specific embodiments of the present invention. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps described in the claims may be performed in a different order than that shown in the embodiments and may still achieve the desired results. Furthermore, the processes depicted in the drawings do not necessarily require the specific or sequential order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A hydrostatic guiding mechanism, characterized in that, include: The main body is provided with a forward-facing vertical slide groove, a rearward-facing horizontal slide groove, and a mounting groove located behind the vertical slide groove; the vertical slide groove has a built-in slide block, and the mounting groove has a built-in first drive motor; The crossbeam is equipped with a drive shaft and a horizontal slide rail that matches the horizontal slide groove; the main body is fixed on the drive shaft, and the horizontal slide groove cooperates with the horizontal slide rail; A hydrostatic system includes an oil supply assembly and multiple hydrostatic assemblies; the oil supply assembly is installed on one side of the main body and connected to multiple hydrostatic assemblies through multiple output pipes; the hydrostatic assemblies are respectively installed in the vertical slide and the horizontal slide. in, The first drive motor is connected to the slide block and drives the slide block to move vertically within the vertical slide groove; The drive shaft guides the main body to move horizontally, thereby causing the slide to move horizontally.

2. The hydrostatic guiding mechanism according to claim 1, characterized in that, A pair of baffles are fixed between the vertical slide and the mounting groove, and the mounting groove is located behind the baffles. The top of the mounting groove is provided with a mounting bracket for fixing the first drive motor.

3. The hydrostatic guiding mechanism according to claim 2, characterized in that, The opposing mounting surfaces on the inner side of the vertical slide groove are each provided with two pairs of slide tracks, wherein... The static pressure assembly is installed on the front side of both sides of the slide rails and the baffle.

4. The hydrostatic guiding mechanism according to claim 3, characterized in that, The hydrostatic assembly disposed in the vertical slide groove includes a hydrostatic soft belt and a linear auxiliary motion module, wherein, The static pressure soft belt is installed on the upper and lower ends of the slide rail and the front side of the baffle on one side of the mounting surface inside the vertical slide rail; The linear motion-assisted module is installed at both ends of the slide on the other side of the mounting surface inside the vertical slide groove.

5. The hydrostatic guiding mechanism according to claim 1, characterized in that, The horizontal slide groove includes an upper slide groove, a lower slide groove, and a shaft fixing member disposed between the upper slide groove and the lower slide groove, wherein... The upper slide groove is an inverted L-shape, and a downwardly extending upper baffle is provided at the top of the upper slide groove. Static pressure components are provided on the inner side of the upper slide groove and the inner side of the upper baffle, respectively. The sliding groove is C-shaped, with extended wings on both sides of the main body, an upwardly extending lower baffle at the bottom of the sliding groove, and static pressure components on the upper and lower inner sides of the sliding groove and the inner side of the lower baffle, respectively. The shaft fixing component is sleeved on the transmission shaft, guiding the main body to move horizontally on the crossbeam.

6. The hydrostatic guiding mechanism according to claim 5, characterized in that, The horizontal slide rail is provided with an upper slide rail and a lower slide rail, which are respectively fitted and cooperate with the upper slide groove and the lower slide groove; the drive shaft is located between the upper slide rail and the lower slide rail, and cooperates with the shaft fixing member to guide the main body to move horizontally.

7. The hydrostatic guiding mechanism according to claim 5, characterized in that, The static pressure assembly disposed within the horizontal slide groove includes a static pressure block and a static pressure mounting plate for mounting the static pressure block; wherein, The static pressure mounting plate clamps and fixes the static pressure block in the upper sliding groove and the lower sliding groove with screws.

8. The hydrostatic guiding mechanism according to claim 1, characterized in that, The top of the vertical chute is provided with a cover plate that surrounds the slide block.

9. The hydrostatic guiding mechanism according to claim 1, characterized in that, The oil supply assembly includes a damping tube, wherein, Multiple damping tubes are horizontally arranged and sequentially arranged on one or both sides of the main body; The input ends of the multiple damping tubes are connected to a single input tube, and the output ends of the multiple damping tubes are connected to multiple output tubes respectively. The multiple output tubes are connected to the multiple hydrostatic components one by one.

10. An oil recovery system, characterized in that, An oil recovery system is applied to the hydrostatic guiding mechanism as described in any one of claims 1-9 for oil recovery, the oil recovery system comprising: a first recovery component disposed at the bottom of the main body, a second recovery component disposed at both ends of the horizontal slide, and a third recovery component disposed on the crossbeam; wherein, The first recovery component scrapes away the oil overflowing from the up-and-down movement of the slide block and collects it into the third recovery component; the second recovery component scrapes away the oil overflowing from the horizontal slide rail and collects it into the third recovery component; the third recovery component recovers the oil from the first recovery component and the second recovery component.

11. The oil recovery system according to claim 10, characterized in that, The first recycling component includes a flow channel that seals the bottom of the main body, a first scraper located at the bottom of the vertical chute and on one side of the flow channel, and a second scraper located on the other side of the flow channel and opposite to the first scraper. The second recovery component includes a third scraper and a fourth scraper respectively disposed at both ends of the horizontal chute and an oil guide plate for collecting oil. The third recovery component includes a recovery tank arranged along the horizontal slide rail and a connector for guiding overflowing oil.

12. The oil recovery system according to claim 11, characterized in that, The recycling tank includes a first recycling tank, a second recycling tank, and a third recycling tank arranged along the horizontal slide rail; The connector includes a first connector that guides the oil from the first recovery tank to the third recovery tank and a second connector that guides the oil from the first recovery tank to the second recovery tank to the third recovery tank.

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