Hydrostatic guide rail based on flexible elastic element

Abstract

The invention relates to the technical field of hydrostatic guideway processing, and discloses an elastic hydrostatic guideway with a novel structure, which comprises a guideway base, a moving slide block and a plurality of flexible elastic elements, a plurality of rectangular grooves are continuously formed in the guide rail base in the length direction to form a plurality of rows parallel to each other; a plurality of oil cavities corresponding to the rectangular grooves are continuously formed in the bottom of the moving sliding block in the length direction, and a plurality of rows parallel to one another are formed. The bottom of the moving sliding block and the oil cavity are provided with oil drainage grooves in a staggered mode. One end of the oil path leads to the oil cavity, and the other end of the oil path leads to an oil supply hole formed in the side face of the moving sliding block. The invention aims to improve the traditional rigid guide rail design, the flexible elastic element and the specific structural design are added on the guide rail, the bearing capacity is improved, and the oil film rigidity is enhanced, so that the guide rail is more stable and reliable in various application scenes.

Description

Technical Field

[0001] The invention relates to the technical field of hydrostatic guide rail processing, in particular to a liquid hydrostatic guide rail based on a flexible elastic element. Background Art

[0002] In the context of the rapid development of modern manufacturing and automation technology, mechanical equipment has increasing requirements for guide rail systems. Hydrostatic guides and air hydrostatic guides have been widely studied and applied in practice, covering all areas of mechanical engineering. These guides are used in large applications with precise movements, as well as machine tools and small machines that require high rigidity and precision. Usually, the supporting components of hydrostatic guides are rigid. Traditional guide rail systems usually use metal materials, and this design has been widely adopted in many applications.

[0003] However, the traditional guide rail system lacks flexibility and has some defects. The guide rail is prone to wear during the entire application process, especially the machine tool guide rail, most of whose raw materials are mainly cast iron, which increases the difficulty of repair. Wear will cause the accuracy of the guide rail to decrease, affecting the operating efficiency and processing quality of the equipment. For example, the wear of the machine tool guide rail may cause problems such as verticality error, spacing error, local gap and joint step error, which in turn affects the stability and processing accuracy of the equipment. Improper adjustment of the guide rail gap and loosening of the guide plate bolts that fix the guide rail on the guide frame may cause vibration and noise of the equipment, affecting the stability of the equipment and the comfort of the operator. Due to the high friction and fast wear, the traditional guide rail system requires regular maintenance and maintenance, including cleaning, lubrication and replacement of worn parts, which increases maintenance costs. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, a liquid hydrostatic guide rail based on a flexible elastic element is provided, which is used to improve the load-bearing capacity and oil film stiffness of the hydrostatic guide rail, so that it performs more stably and reliably in high-load and high-precision application scenarios, and is used to solve the technical problem of consistency in motion accuracy of existing hydrostatic guide rails.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solution: A novel elastic hydrostatic guide rail, characterized in that it comprises: a guide rail base, a moving slider and a plurality of flexible elastic elements; a plurality of rectangular grooves are arranged at intervals on the guide rail base, and the rectangular grooves are arranged along the length direction of the guide rail base to form a plurality of rows parallel to each other, and a plurality of the flexible elastic elements are arranged in the corresponding rectangular grooves; an oil cavity is arranged at the bottom of the moving slider corresponding to the rectangular groove; an oil circuit is arranged in the moving slider, one end of the oil circuit is respectively connected to the oil cavity, and the other end is connected to the oil supply hole arranged on the side of the moving slider.

[0006] As a further improvement of the present invention, the flexible elastic element is in the shape of a hollow rectangular block surrounded by five sides, each side has a thickness of 1-3 mm, and is made of brass.

[0007] As a further improvement of the present invention, the flexible elastic element is completely embedded in the rectangular groove when placed therein, with its opening facing the bottom surface of the rectangular groove, and its four surfaces in close contact with the four inner wall surfaces of the rectangular groove.

[0008] As a further improvement of the present invention, the inner cavity of the flexible elastic element is rectangular.

[0009] As a further improvement of the present invention, the oil cavity is a long groove sunken into the moving slider, and both ends of the long groove are arc-shaped.

[0010] As a further improvement of the present invention, the concave platform opening of the oil chamber is adapted to the rectangular grooves arranged in the same row.

[0011] As a further improvement of the present invention, the bottom center of the moving slider is provided with oil drain grooves along its length direction and width direction respectively, and the oil drain grooves divide the bottom of the moving slider into several areas, and each area is provided with an oil cavity; As a further improvement of the present invention, the oil drain groove arranged along the length direction of the moving slider runs through the entire length of the moving slider, and the oil drain groove arranged along the width direction of the moving slider runs through the entire width of the moving slider.

[0012] As a further improvement of the present invention, a throttle is provided in the oil supply hole, and the throttle is completely embedded in the oil supply hole when screwed in.

[0013] As a further improvement of the present invention, the oil supply hole supplies oil to at least two oil chambers arranged side by side.

[0014] Compared with the prior art, the present invention has the following advantages: The present invention discloses a liquid hydrostatic guide rail based on flexible elastic elements, which adopts a new flexibility theory and aims to improve the traditional rigid guide rail design; by adding flexible elastic elements to the guide rail, combined with the material characteristics used or through specific structural design, it adapts to deformation and adjusts the distribution of force, thereby improving the bearing capacity of the oil film; the introduction of these flexible elastic elements plays a positive role and significantly improves the overall performance of the guide rail; it not only has a higher bearing capacity, but also enhances the film stiffness, thereby performing more stably and reliably in various application scenarios.

[0015] Furthermore, the flexible elastic element is designed as a hollow rectangular block surrounded by five sides, which can more effectively absorb and disperse the impact and vibration generated by the guide rail during movement, thereby improving the rigidity and stability of the guide rail.

[0016] Furthermore, the flexible elastic element is completely embedded in the rectangular groove, and its opening faces the bottom surface of the rectangular groove and abuts against the four inner walls of the rectangular groove, which can ensure close contact between the flexible elastic element and the guide rail base, prevent oil leakage, and improve the sealing and durability of the guide rail.

[0017] Furthermore, the cavity of the flexible elastic element is designed to be in a rectangular block shape, which can maintain the stability and uniformity of the flexible elastic element and further improve the load-bearing capacity and movement smoothness of the guide rail.

[0018] Furthermore, the oil cavity is designed as a long groove with arc-shaped ends, which can more effectively contain and distribute the oil, improve the uniformity and stability of the oil film, and thus reduce the friction and wear of the guide rail.

[0019] Furthermore, the concave platform opening length of the oil chamber is adapted to the plurality of rectangular grooves in the same row, which can ensure that the oil can flow into each oil chamber evenly, thereby improving the utilization rate of the oil and the lubrication effect of the guide rail.

[0020] Furthermore, the setting of the oil drain groove can ensure the uniform distribution of the lubricating oil at the bottom of the moving slider, and prevent the lubricating oil from accumulating at the bottom of the slider to form an oil film, which affects the accuracy and stability of the guide rail. The bottom of the slider is divided into several areas by the oil drain groove, and an oil cavity is provided in each area, which can further improve the lubrication effect.

[0021] Furthermore, such a design can ensure that the oil drain groove fully covers the moving slider, prevent the lubricating oil from accumulating or leaking on the edge of the slider, and improve the cleanliness and stability of the guide rail system.

[0022] Furthermore, the throttle is completely embedded in the oil supply hole when screwed in, which can ensure a close fit between the throttle and the oil supply hole, prevent oil leakage, and improve the stability and accuracy of the throttle; at the same time, the throttle does not protrude from the moving slider during the movement of the moving slider, which helps to reduce air resistance.

[0023] Furthermore, each oil supply hole can provide oil to at least two parallel oil chambers, thereby improving the uniformity of oil distribution, the continuity and stability of the oil film in each oil chamber, and the lubrication effect of the entire guide rail. At the same time, this also increases the load-bearing capacity and movement stability of the guide rail. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a two-dimensional schematic diagram of the present invention; Figure 2 It is a schematic diagram of the guide rail of the present invention; Figure 3 It is a schematic diagram of the flexible elastic element of the present invention; Figure 4 It is a schematic diagram of a slider of the present invention; Figure 5 It is an exploded view of the present invention.

[0025] Among them, 1. guide rail base; 2. flexible elastic element; 3. rectangular groove; 4. throttle; 5. moving slider; 6. oil circuit; 7. oil chamber; 8. oil drain groove. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "one side", "one end", "one side" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, in the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0030] It should also be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0031] It should be further understood that the term "and / or" used in the present description and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0032] Various structural schematic diagrams of the embodiments disclosed in the present invention are shown in the accompanying drawings. These figures are not drawn to scale, and some details are magnified and some details may be omitted for the purpose of clear expression. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships therebetween are only exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations, and those skilled in the art may additionally design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0033] The present invention provides a liquid hydrostatic guide rail based on flexible elastic elements. This design is an innovation based on the traditional rigid guide rail, and flexible elastic elements are added to improve its performance. By adding flexible elastic elements to the guide rail, combined with the material properties used or through specific structural design, the introduction of these flexible elastic elements plays a positive role and significantly improves the overall performance of the guide rail. Specifically, when the flexible elastic element is squeezed, deformation occurs at the grooves and edges, and the thickness of the oil film wrapped by the element changes accordingly, thereby improving the distribution of the bearing pressure; this improvement not only enables the guide rail to have a higher load-bearing capacity, but also enhances the film stiffness, so that it performs more stable and reliable in various application scenarios.

[0034] like Figure 1 As shown, the present invention is a liquid hydrostatic guide rail based on a flexible elastic element, comprising a guide rail base 1, a moving slider 5 and a plurality of flexible elastic elements 2; the guide rail base 1 is provided with a plurality of rectangular grooves 3 arranged at intervals along the length direction, forming a plurality of parallel rows; the bottom of the moving slider 5 is provided with a plurality of oil chambers 7 corresponding to the rectangular grooves 3 along the length direction, forming two parallel rows; the bottom of the moving slider 5 is provided with an oil drain groove 8 staggered from the oil chamber 7; the moving slider 5 is provided with an oil path 6, one end of the oil path 6 leads to the oil chamber 7, and the other end leads to the oil supply hole provided on the side of the moving slider 5; the oil supply hole is provided with a throttle 4 to control the amount of oil inlet. The rectangular groove 3 is provided with a flexible elastic element 2 which is buckled and covered on the bottom surface of the rectangular groove 3.

[0035] In this design, the position of the rectangular groove 3 corresponds to the oil chamber 7 below the moving slider 5, ensuring that the lubricating oil can flow smoothly into the rectangular groove 3. When the guide rail works normally, the lubricating oil enters the rectangular groove 3 through the oil chamber 7, forming a good lubrication environment. Under the action of the expansion fluid, the lift and flow rate will increase significantly, thereby improving the overall performance of the guide rail. The lubricating oil can be injected into the rectangular groove 3 through these oil chambers 7, and a static pressure oil film can be formed to reduce the friction coefficient between the moving slider 5 and the guide rail base 1, thereby improving the movement accuracy and response speed.

[0036] The moving slider 5 is suspended on the guide rail base 1 by a static oil film. Two oil supply holes are provided on the moving slider 5, which are connected to an external hydraulic system to provide a stable oil film pressure. An oil drain groove 8 is also provided at the bottom of the moving slider 5 to ensure uniform distribution and stability of the oil film.

[0037] It can be found through observation that the flexible elastic element 2 on the surface effectively enhances the bearing capacity of the guide rail, making it more stable and efficient under various working conditions. This innovative design not only improves the functionality of the guide rail, but also provides new possibilities for application in related fields.

[0038] Example like Figure 1 As shown, a liquid hydrostatic guide rail based on a flexible elastic element in this embodiment includes a track base 1, a flexible elastic element 2, a throttle 4 and a moving slider 5.

[0039] The track base 1 is connected to a moving slider 5, and an oil circuit 6 is provided inside the moving slider 5, and an oil inlet hole is provided at one end of the oil circuit 6. By installing a throttle 4 at the oil inlet hole, the amount of lubricating oil entering can be effectively controlled, thereby achieving precise regulation of the lubrication process. The throttle 4 is designed to be completely embedded in the oil supply hole. This installation method not only ensures the stability of the throttle 4, but also helps to control the amount of oil entering, thereby adjusting the pressure and thickness of the oil film; at the same time, the throttle 4 does not protrude from the moving slider 5 during the movement of the moving slider 5, which helps to reduce air resistance.

[0040] The other end of the oil passage 6 forms an oil chamber 7, which corresponds to the position of the rectangular groove 3. Through the oil chamber 7, the lubricating oil can be smoothly injected into the rectangular groove 3, and the lubricating oil fills the space between the rail base 1 and the moving slider 5, thereby forming a stable lubricating oil film. The formation of this oil film not only reduces friction, but also improves the movement efficiency between the guide rail base 1 and the moving slider 5.

[0041] In addition, an oil drain groove 8 is provided under the moving slider 5 to discharge excess lubricating oil, ensuring that the lubrication effect of the system is always maintained in the best state. This design not only improves the load-bearing capacity and stability of the guide rail, but also effectively prolongs the service life of the equipment, providing a more reliable solution for related applications.

[0042] Figure 2 The guide rail base 1 in this embodiment is shown. The guide rail base 1 is provided with ten rectangular grooves 3 continuously along the length direction to form two parallel rows. Flexible elastic elements 2 are installed in these rectangular grooves 3 to enhance the performance of the guide rail. The guide rail base 1 is the basic part of the hydrostatic guide rail. It is provided with a number of rectangular grooves 3 continuously along the length direction. These grooves are parallel to each other, providing space for the subsequent oil film formation and the installation of the flexible elastic element 2. The flexible elastic element 2 is a hollow rectangular block surrounded by five sides, with four side surfaces and a top surface, and one bottom surface is not closed facing the groove; each surface is made of brass sheet, and the thickness can be 1~3mm, which is used to improve the bearing capacity of the oil film.

[0043] The flexible elastic element 2 will deform when it is under pressure. When the force on the edge of the flexible elastic element 2 drops to zero, the original linear change changes to a nonlinear change. This deformation will cause the thickness of the oil film to change, thereby causing the thickness of the oil film to change at different positions. The change in oil film thickness affects the pressure distribution, which is based on the Reynolds equation in fluid lubrication theory: when the flexible element deforms and changes the thickness of the oil film, the pressure distribution also changes. The pressure changes at the grooves and edges allow the oil film to withstand greater loads, thereby improving the load-bearing capacity of the oil film. The flexible elastic element 2 plays an inherent compensation role and can maintain the stability of the guide system performance when the load changes.

[0044] Figure 3 The flexible elastic element 2 in this embodiment is shown. The flexible elastic element 2 is installed in the rectangular groove 3. Their function is to increase the elasticity and stability of the guide rail, and also to help form and maintain the oil film. The size design of the flexible elastic element 2 at least ensures that the upper surface is lower than the guide rail surface to ensure that an effective oil film can be formed between the guide rail base 1 and the moving slider 5.

[0045] The flexible elastic element 2 is designed as a hollow rectangular block surrounded by five sides. This design not only ensures the strength of the flexible elastic element 2, but also allows it to deform when under pressure, thereby providing better elastic support. After installation, the flexible elastic element 2 is completely embedded in the rectangular groove 3, and its four faces are tightly fitted with the four inner wall surfaces of the rectangular groove 3, ensuring the stability and reliability of the flexible elastic element 2 on the guide rail base 1. The cavity of the flexible elastic element 2 is also a rectangular block. This design helps to maintain the overall shape and stability of the flexible elastic element 2, and is also conducive to the formation and distribution of the oil film.

[0046] Figure 4 The moving slider 5 in this embodiment is shown. The moving slider 5 is the moving part on the guide rail, and four oil chambers 7 corresponding to the rectangular groove 3 are arranged at the bottom thereof, two in a row, and the two rows of oil chambers 7 are also parallel to each other, for storing lubricating oil and forming a static pressure oil film. The oil chamber 7 is designed as a long groove sunken into the moving slider 5. This design helps to increase the capacity of the oil chamber 7, thereby accommodating more lubricating oil. At the same time, the two ends of the long groove are arc-shaped, which helps to reduce the rupture of the oil film at the edge and improve the stability of the oil film.

[0047] like Figure 4 As shown, the concave opening length of the oil chamber 7 is adapted to a plurality of rectangular grooves 3 in the same row, which means that each oil chamber 7 can cover a plurality of rectangular grooves 3 , thereby ensuring uniform distribution of the oil film on the entire guide rail base 1 .

[0048] The setting of the oil drain groove 8 can be divided into two types: one is to be set between several parallel rows of oil chambers 7, and its length is equal to the length of the moving slider 5. This design helps to discharge excess lubricating oil from the oil chamber 7 along the length direction of the moving slider 5, which can prevent the oil film from being too thick and causing increased friction resistance; because the design of the oil chamber 7 is consistent with the relative displacement direction of the moving slider 5, it can more effectively balance the oil distribution on the entire guide rail. The other is to be set between adjacent oil chambers 7 in the same row, and its length is equal to the width of the moving slider 5. This design also helps to discharge excess lubricating oil, but it focuses more on the oil balance between the oil chambers 7 in the same row, which helps each oil chamber 7 to obtain an appropriate amount of lubricating oil, thereby maintaining the continuity and stability of the oil film in each oil chamber 7. Figure 4 As shown, the present embodiment adopts a combination of the above two oil drain grooves 8 , which has the advantages of both oil drain grooves 8 .

[0049] like Figure 5 As shown, a liquid hydrostatic guide rail based on a flexible elastic element in this embodiment includes a guide rail base 1, a moving slider 5, twenty flexible elastic elements 2 and two throttles 4; the guide rail base 1 is continuously provided with twenty rectangular grooves 3 along the length direction to form two parallel rows; two oil supply holes are provided on the side of the moving slider 5.

[0050] In summary, the present invention is a liquid hydrostatic guide rail based on a flexible elastic element 2, and the flexible elastic element 2 is added to the guide rail base 1, which enhances this advantage. They show higher load-bearing capacity than rigid bearings, as well as linear motion accuracy and stability.

[0051] Many embodiments and many applications beyond the examples provided will be apparent to those skilled in the art upon reading the above description. Therefore, the scope of the present teachings should not be determined with reference to the above description, but rather with reference to the preceding claims and the full scope of equivalents to which such claims are entitled. For the purpose of comprehensiveness, all articles and references, including disclosures of patent applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the preceding claims is not intended to be a disclaimer of such subject matter, nor should it be considered that the applicants did not consider such subject matter to be part of the disclosed inventive subject matter.

[0052] The above content is a further detailed description of the present invention. It cannot be determined that the specific implementation methods of the present invention are limited to these. For ordinary technicians in the technical field to which the present invention belongs, without departing from the concept of the present invention, they can also make several simple deductions or substitutions, which should be regarded as belonging to the protection scope of the present invention determined by the submitted claims.

Claims

1. A hydrostatic guide rail based on a flexible elastic element, characterized in that: include: A guide rail base (1), a moving slider (5) and a plurality of flexible elastic elements (2); A plurality of rectangular grooves (3) are arranged at intervals on the guide rail base (1), the rectangular grooves (3) are arranged along the length direction of the guide rail base (1) to form a plurality of rows parallel to each other, and a plurality of the flexible elastic elements (2) are arranged in corresponding rectangular grooves (3); An oil cavity (7) is provided at the bottom of the moving slider (5) corresponding to the rectangular groove (3); An oil circuit (6) is provided in the moving slider (5), one end of the oil circuit (6) is communicated with the oil chamber (7), and the other end is communicated with an oil supply hole provided on the side of the moving slider (5).

2. A liquid hydrostatic guide rail based on a flexible elastic element according to claim 1, characterized in that: The flexible elastic element (2) is in the shape of a hollow rectangular block surrounded by five sides, each side has a thickness of 1 to 3 mm, and is made of brass.

3. A liquid hydrostatic guide rail based on a flexible elastic element according to claim 2, characterized in that: When the flexible elastic element (2) is placed, it is completely embedded in the rectangular groove (3), its opening faces the bottom surface of the rectangular groove (3), and its four surfaces are in close contact with the four inner wall surfaces of the rectangular groove (3).

4. A liquid hydrostatic guide rail based on a flexible elastic element according to claim 2, characterized in that: The inner cavity of the flexible elastic element (2) is rectangular.

5. The hydrostatic guide rail based on a flexible elastic element according to claim 1, characterized in that: The oil chamber (7) is a long groove sunken into the moving slider (5), and both ends of the long groove are in arc shape.

6. A liquid hydrostatic guide rail based on a flexible elastic element according to claim 5, characterized in that: The concave opening of the oil chamber (7) is adapted to the rectangular grooves (3) arranged in the same row.

7. A hydrostatic guide rail based on a flexible elastic element according to claim 1, characterized in that: The bottom center of the moving slider (5) is provided with an oil drain groove (8) along its length direction and width direction respectively. The oil drain groove (8) divides the bottom of the moving slider (5) into a plurality of areas, and an oil cavity (7) is provided in each area.

8. A hydrostatic guide rail based on a flexible elastic element according to claim 7, characterized in that: The oil drain groove (8) arranged along the length direction of the moving slider (5) runs through the entire length of the moving slider (5), and the oil drain groove (8) arranged along the width direction of the moving slider (5) runs through the entire width of the moving slider (5).

9. The hydrostatic guide rail based on a flexible elastic element according to claim 1, characterized in that: A throttle (4) is arranged in the oil supply hole, and the throttle (4) is completely embedded in the oil supply hole when screwed in.

10. A hydrostatic guide rail based on a flexible elastic element according to claim 1, characterized in that: The oil supply hole supplies oil to at least two oil chambers (7) arranged side by side.

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