Hydrostatic guideway device with adaptive oil film compensation

Abstract

The utility model relates to machine tool guide rail technical field discloses a kind of static pressure guide rail devices with self-adapting oil film compensation, including sliding guide, the sliding guide both sides are equipped with matching recess, the static pressure slider is arranged outside the sliding guide, the static pressure slider is passed through and equipped with snap recess inside, the snap recess inner wall is fixedly connected with resin layer, multiple first oil storage grooves are equipped with in resin layer inner wall both sides, two second oil storage grooves are equipped with in resin layer inner wall upper, multiple oil injection holes are equipped with in first oil storage groove and second oil storage groove, the static pressure slider both sides are fixedly connected with first oil pipe. In the utility model, pressure transmitter can monitor oil film pressure in real time, when load increases and causes oil film pressure to reduce, throttling increases throttling opening, so that more lubricating oil can quickly flow into oil storage groove and oil film area, increase oil film thickness and pressure, so as to improve carrying capacity.

Description

Technical Field

[0001] This utility model relates to the field of machine tool guideway technology, specifically a hydrostatic guideway device with adaptive oil film compensation. Background Technology

[0002] Parts that support and guide moving components along a certain trajectory are called guideways, often simply referred to as guideways. They are common machine tool components. The working principle of hydrostatic guideways is the same as that of hydrostatic bearings. Lubricating oil with a certain pressure is introduced into the oil chamber on the guideway surface through a throttle, forming a load-bearing oil film that keeps the guideway surfaces in a state of pure liquid friction. This reduces the frictional force of the guideway.

[0003] Most existing hydrostatic guideways do not have the function of adaptive oil film compensation, that is, they cannot automatically compensate for the oil film thickness. If the oil film is too thin, the moving parts will directly contact the guideway, which will aggravate wear and affect the accuracy of the equipment; if the oil film is too thick, the moving parts will float, reducing the positioning accuracy and response speed of the motion.

[0004] To address the aforementioned issues, a hydrostatic guide rail device with adaptive oil film compensation is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a hydrostatic guide rail device with adaptive oil film compensation, which solves the problem in the prior art that it does not have the function of adaptive oil film compensation, that is, it cannot automatically compensate for the oil film thickness.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a hydrostatic guide rail device with adaptive oil film compensation, comprising a sliding guide rail, with mating grooves on both sides of the sliding guide rail, a hydrostatic slider disposed outside the sliding guide rail, a snap-fit ​​groove penetrating through the hydrostatic slider, a resin layer fixedly connected to the inner wall of the snap-fit ​​groove, multiple first oil storage tanks disposed on both sides of the inner wall of the resin layer, two second oil storage tanks disposed above the inner wall of the resin layer, multiple oil injection holes disposed in both the first and second oil storage tanks, first oil pipes fixedly connected to both sides of the hydrostatic slider, a throttle disposed outside the first oil pipes, a pressure transmitter fixedly connected to both the first and second oil storage tanks, and a second oil discharge tank disposed above both sides of the inner wall of the resin layer.

[0007] By adopting the above technical solution, the pressure transmitter can monitor the oil film pressure in real time. When the load increases and the oil film pressure decreases, the throttle increases the opening of the throttle orifice, allowing more lubricating oil to flow quickly into the oil reservoir and oil film area, increasing the oil film thickness and pressure, thereby improving the load-bearing capacity. Conversely, when the load decreases and the oil film pressure increases, the throttle decreases the opening of the throttle orifice, reducing the oil flow rate, lowering the oil film pressure, maintaining a stable oil film thickness, and achieving adaptive oil film compensation.

[0008] As a further description of the above technical solution: the fastening groove is disposed outside the mating groove, and the outside of the fastening groove is slidably connected to the inner wall of the mating groove.

[0009] By adopting the above technical solution, the hydrostatic slider can slide along the sliding guide rail.

[0010] As a further description of the above technical solution: the multiple oil injection holes are interconnected.

[0011] By adopting the above technical solution, it is ensured that the lubricating oil can be evenly injected into the first and second oil reservoirs. Furthermore, each oil reservoir is connected to at least one oil injection hole.

[0012] As a further description of the above technical solution: the first oil pipe is connected to the oil injection holes on both sides.

[0013] By adopting the above technical solution, lubricating oil can easily enter the oil injection hole through the first oil pipe.

[0014] As a further description of the above technical solution: a second oil pipe is fixedly connected to the top of the hydrostatic slider, and the second oil pipe is connected to the oil injection hole mentioned above.

[0015] By adopting the above technical solution, lubricating oil can easily enter the oil injection hole through the second oil pipe, and a throttle is also installed on the outside of the second oil pipe.

[0016] As a further description of the above technical solution: a first oil drain groove is provided through the upper middle part of the inner wall of the resin layer, and the first oil drain groove is arranged between the two second oil storage grooves.

[0017] By adopting the above technical solution, the first oil drain groove is mainly used to drain the lubricating oil located on the upper side of the resin layer, so as to avoid the lubricating oil accumulating on the upper side and affecting the sliding of the slider.

[0018] As a further description of the above technical solution: multiple mounting holes are provided on both sides of the top of the hydrostatic slider, and the mounting holes are located on both sides of the second oil pipe.

[0019] By adopting the above technical solution, the mounting hole is a pre-reserved hole, which facilitates the installation of objects that need to move linearly on the hydrostatic slider and facilitates the use of the hydrostatic guide rail device.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model provides a hydrostatic guide rail device with adaptive oil film compensation. Through the coordinated operation of a pressure transmitter, a throttle, an oil pipe, an oil injection hole, an oil reservoir, an oil discharge groove, and a hydrostatic slider, the pressure transmitter can monitor the oil film pressure in real time. When the load increases and causes the oil film pressure to decrease, the throttle increases the opening of the throttle orifice, allowing more lubricating oil to flow quickly into the oil reservoir and oil film area, increasing the oil film thickness and pressure, thereby improving the load-bearing capacity. Conversely, when the load decreases and the oil film pressure increases, the throttle decreases the opening of the throttle orifice, reducing the oil flow rate, lowering the oil film pressure, and maintaining a stable oil film thickness, thus achieving adaptive oil film compensation. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the hydrostatic slider structure of this utility model; Figure 3 This is an exploded view of the overall structure of this utility model.

[0022] In the diagram: 1. Sliding guide rail; 2. Static pressure slider; 3. Resin layer; 4. First oil reservoir; 5. Oil injection hole; 6. First oil pipe; 7. Throttling device; 8. Snap-fit ​​groove; 9. Pressure transmitter; 10. Second oil reservoir; 11. Second oil pipe; 12. First oil drain groove; 13. Second oil drain groove; 14. Mounting hole; 15. Mating groove. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] To further understand the contents of this utility model, a detailed description of this utility model will be provided with reference to the accompanying drawings.

[0025] Reference Figure 1-3This utility model discloses a hydrostatic guide rail device with adaptive oil film compensation, comprising a sliding guide rail 1, with mating grooves 15 on both sides of the sliding guide rail 1, which serve to limit and guide movement. A hydrostatic slider 2 is disposed outside the sliding guide rail 1, and a snap-fit ​​groove 8 is formed through the hydrostatic slider 2, which serves to limit movement. A resin layer 3 is fixedly connected to the inner wall of the snap-fit ​​groove 8, and multiple first oil reservoirs 4 are formed on both sides of the inner wall of the resin layer 3 for storing lubricating oil. Two second oil reservoirs 10 are formed above the inner wall of the resin layer 3, and multiple oil injection holes 5 are formed in both the first oil reservoirs 4 and the second oil reservoirs 10 for facilitating the delivery of lubricating oil. A first oil pipe 6 is fixedly connected to both sides of the hydrostatic slider 2, and a throttle 7 is disposed outside the first oil pipe 6, which is a key component for realizing adaptive oil film compensation. A pressure transmitter 9 is fixedly connected to both the first oil reservoirs 4 and the second oil reservoirs 10 for detecting the pressure of the oil film. A second row of oil grooves 13 is provided on both sides of the upper part of the inner wall of the resin layer 3.

[0026] Reference Figure 1-3 The engaging groove 8 is located outside the mating groove 15, and the outer side of the engaging groove 8 is slidably connected to the inner wall of the mating groove 15, facilitating the sliding of the hydrostatic slider 2 along the sliding guide rail 1. Multiple oil injection holes 5 are interconnected, ensuring that lubricating oil can be evenly injected into the first oil reservoir 4 and the second oil reservoir 10. Each oil reservoir is connected to at least one oil injection hole 5, and the first oil pipe 6 is connected to the oil injection holes 5 on both sides, facilitating the entry of lubricating oil into the oil injection holes 5 through the first oil pipe 6. A second oil pipe 11 is fixedly connected to the top of the hydrostatic slider 2, and the second oil pipe 11 is connected to the upper oil injection hole 5. This facilitates the entry of lubricating oil into the oil injection hole 5 through the second oil pipe 11, and a throttle (not shown in the figure) is also provided on the outside of the second oil pipe 11. A first oil groove 12 is formed through the upper center of the inner wall of the resin layer 3. The first oil groove 12 is located between the two second oil storage grooves 10. The first oil groove 12 is mainly used to drain the lubricating oil located on the upper side of the resin layer 3, so as to avoid the lubricating oil accumulating on the upper side and affecting the sliding of the slider. Multiple mounting holes 14 are formed on both sides of the top of the hydrostatic slider 2. The mounting holes 14 are located on both sides of the second oil pipe 11. The mounting holes 14 are reserved holes to facilitate the installation of objects that need to move linearly on the hydrostatic slider 2, and to facilitate the use of the hydrostatic guide rail device.

[0027] Working Principle: During use, lubricating oil is delivered through the first oil pipe 6 and the second oil pipe 11. The first oil pipe 6 is connected to the oil injection holes 5 on both sides, and the second oil pipe 11 is connected to the oil injection hole 5 above. Multiple oil injection holes 5 are interconnected, ensuring that the lubricating oil is evenly injected into the first oil reservoir 4 and the second oil reservoir 10. When the oil pressure in the reservoir is high, the lubricating oil is further dispersed into the gap between the resin layer 3 and the sliding guide rail 1, forming an oil film with a certain pressure. This separates the hydrostatic slider 2 from the sliding guide rail 1, achieving pure liquid friction, reducing wear and frictional resistance. The adaptive oil film compensation function is achieved through the coordinated action of the pressure transmitter 9 and the throttle 7. The pressure transmitter 9 is installed in the first oil reservoir 4 and the second oil reservoir 10, monitoring the oil film pressure in real time. When the load on the sliding guide rail 1 changes, such as an increase in load, the oil film is compressed, and the oil film pressure changes. The pressure transmitter 9 immediately senses the pressure change and converts the pressure signal into an electrical signal, transmitting it to an externally set controller (not shown in the figure). After receiving the signal, the controller analyzes and processes it, and sends adjustment commands to the throttle valve 7 according to the preset control strategy. Based on the received commands, it adjusts the size of the throttle opening. When the load increases, causing a decrease in oil film pressure, the throttle valve 7 increases the opening, allowing more lubricating oil to flow quickly into the oil reservoir and oil film area, increasing oil film thickness and pressure, thereby improving load-bearing capacity. Conversely, when the load decreases and the oil film pressure increases, the throttle valve 7 decreases the opening, reducing oil flow and lowering oil film pressure, maintaining a stable oil film thickness, and achieving adaptive oil film compensation.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydrostatic guide rail device with adaptive oil film compensation, comprising a sliding guide rail (1), characterized in that: The sliding guide rail (1) has mating grooves (15) on both sides. A static pressure slider (2) is provided on the outside of the sliding guide rail (1). A snap-fit ​​groove (8) is provided inside the static pressure slider (2). A resin layer (3) is fixedly connected to the inner wall of the snap-fit ​​groove (8). Multiple first oil storage tanks (4) are provided on both sides of the inner wall of the resin layer (3). Two second oil storage tanks (10) are provided on the upper part of the inner wall of the resin layer (3). Multiple oil injection holes (5) are provided in both the first oil storage tank (4) and the second oil storage tank (10). A first oil pipe (6) is fixedly connected on both sides of the static pressure slider (2). A throttle (7) is provided on the outside of the first oil pipe (6). A pressure transmitter (9) is fixedly connected in both the first oil storage tank (4) and the second oil storage tank (10). A second oil drain groove (13) is provided on the upper part of both sides of the inner wall of the resin layer (3).

2. The hydrostatic guide rail device with adaptive oil film compensation according to claim 1, characterized in that: The engaging groove (8) is located outside the mating groove (15), and the outside of the engaging groove (8) is slidably connected to the inner wall of the mating groove (15).

3. A hydrostatic guide rail device with adaptive oil film compensation according to claim 1, characterized in that: The multiple oil injection holes (5) are interconnected.

4. A hydrostatic guide rail device with adaptive oil film compensation according to claim 1, characterized in that: The first oil pipe (6) is connected to the oil injection holes (5) on both sides.

5. A hydrostatic guide rail device with adaptive oil film compensation according to claim 1, characterized in that: The top of the hydrostatic slider (2) is fixedly connected to a second oil pipe (11), and the second oil pipe (11) is connected to the oil injection hole (5) above.

6. A hydrostatic guide rail device with adaptive oil film compensation according to claim 1, characterized in that: The resin layer (3) has a first oil drain groove (12) that runs through the middle of the upper part of the inner wall and is located between the two second oil storage grooves (10).

7. A hydrostatic guide rail device with adaptive oil film compensation according to claim 1, characterized in that: The static pressure slider (2) has multiple mounting holes (14) on both sides of its top, and the mounting holes (14) are located on both sides of the second oil pipe (11).

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