Micropore throttling hydrostatic guideway sliding block

Abstract

The utility model relates to the technical field of mechanical equipment, in particular to a micropore throttling hydrostatic guide rail sliding block which comprises a sliding block body, and the lower end face of the sliding block body is provided with a first oil outlet face and an oil injection hole at the same time. The side end face, close to the guide rail, of the sliding block body is provided with a second oil outlet face. A first oil way and a second oil way are arranged in the sliding block body, one end of the first oil way communicates with the oil injection hole, the other end of the first oil way extends to the second oil outlet face, one end of the second oil way communicates with the first oil way, and the other end of the second oil way communicates with the first oil outlet face. According to the utility model, the micro-pore integrated oil path is used for replacing a modularized thin film throttler in the prior art, so that the structure is simplified, the reliability is improved, the manufacturing cost is reduced, the stability of an oil film is optimized through a capillary throttling network, and the bottleneck problem caused by the dependence of an elastic element and complex assembly in the prior art is effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of mechanical equipment technology, specifically to a microporous throttling hydrostatic guide rail slider. Background Technology

[0002] Hydrostatic technology has wide applications in precision machinery, with hydrostatic guides, hydrostatic bearings, and hydrostatic lead screws being typical examples. Throttling devices are key components in these hydrostatic devices, and their performance significantly impacts their functionality. Currently, traditional throttling devices in my country mainly include capillary tubes, orifices, and slide valves. Their load-bearing capacity and oil film thickness vary considerably.

[0003] For example, a published Chinese patent, publication number CN109707738A, discloses a hydrostatic guide rail slider, including a slider body and at least one throttle disposed on the slider body; the slider body includes at least two bearing surfaces, each bearing surface is provided with a hydrostatic oil chamber, the slider body is provided with an oil inlet channel communicating with the throttle orifice of the throttle and at least two oil outlet channels communicating with the oil inlet channel respectively, and the at least two oil outlet channels are respectively connected to the two hydrostatic oil chambers. The hydrostatic guide rail slider disclosed in this patent achieves double-sided pressure stabilization through an independent throttle. The throttle includes a base, a top cover, and an elastic diaphragm. An elastic diaphragm is placed between the base and the top cover to form upper / lower pressure stabilizing chambers and regulating chambers. The oil flows through the oil inlet channel → upper regulating chamber → second notch → upper pressure stabilizing chamber → elastic diaphragm deformation → lower pressure stabilizing chamber → throttle orifice → oil chamber. The hydrostatic guide rail slider disclosed in this patent relies on the deformation of the diaphragm to dynamically regulate the oil pressure, which requires precision machining of the annular protrusions, notches, and other mating structures. The independent throttle needs to be assembled separately. The alignment accuracy of the grooves and protrusions of the base and the top cover is high, resulting in a complex structure. The elastic diaphragm is prone to fatigue failure under long-term pressure, leading to degradation of the pressure stabilizing function and high reliability risk. The spiral oil guide groove and multi-cavity sealing surface are difficult to machine and have high process costs. The modular design requires reserved installation positions in the slider body, which limits the layout flexibility and applicability. Utility Model Content

[0004] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a micro-orifice throttling hydrostatic guide slider to solve the problems of complex structure, high reliability risk, high process cost and limited applicability of the hydrostatic guide slider that achieves double-sided voltage stabilization through an independent throttling device.

[0005] To achieve the above and other related objectives, this utility model provides a micro-orifice throttling hydrostatic guide rail slider, including a slider body, wherein the lower end face of the slider body is provided with a first oil outlet surface and an oil injection hole; the side end face of the slider body near the guide rail is provided with a second oil outlet surface;

[0006] The slider body is provided with a first oil passage and a second oil passage. One end of the first oil passage is connected to the oil injection hole and the other end extends to the second oil outlet surface. One end of the second oil passage is connected to the first oil passage and the other end is connected to the first oil outlet surface.

[0007] In one embodiment of the present invention, a first oil outlet hole is provided on the first oil outlet surface, and a second oil outlet hole is provided on the second oil outlet surface.

[0008] In one embodiment of the present invention, a third oil outlet hole is provided on both the front end face and the rear end face of the slider body, and the third oil outlet hole is connected to the second oil outlet hole.

[0009] In one embodiment of the present invention, the upper end face of the slider body is provided with a third oil outlet surface, and a fourth oil outlet hole is provided on the third oil outlet surface, the fourth oil outlet hole being connected to the first oil outlet hole.

[0010] In one embodiment of this utility model, the number of the first oil outlet, the second oil outlet, the third oil outlet, and the fourth oil outlet are all ≥2. The oil injection hole is connected to the first oil outlet, the second oil outlet, the third oil outlet, and the fourth oil outlet through the first oil passage and the second oil passage to form a microporous throttling capillary network.

[0011] In one embodiment of this utility model, the first oil outlet surface, the second oil outlet surface, and the third oil outlet surface are all concave structures.

[0012] In one embodiment of the present invention, the slider body is further provided with a through hole, the two ends of which are respectively connected to the upper end face and the lower end face of the slider body.

[0013] As described above, the microporous throttling hydrostatic guide slider of this utility model has the following beneficial effects:

[0014] 1. This utility model directly processes oil passages and oil outlet holes on the slider body, enabling the formation of a microporous throttling capillary network on the slider to replace thin-film voltage regulation. This eliminates the need for complex modules such as independent throttling devices and elastic films, thus eliminating the risk of elastic element failure and effectively simplifying the structure of the hydrostatic guide slider and improving its reliability. Furthermore, the concave oil outlet surface increases the oil storage area, strengthens oil film continuity, and the evenly distributed multi-hole design enhances oil film uniformity.

[0015] 2. This utility model designs the oil circuit as a straight line and a simple branch channel, which can avoid high-precision structures such as spiral grooves and multi-cavity bodies, and reduce the processing difficulty; this utility model has no assembly links, eliminating sealing failure caused by misalignment.

[0016] 3. The multiple oil outlet surfaces, oil outlet holes, and oil passages designed in this utility model can be connected, allowing cross-surface oil passage connection, supporting multi-directional bearing surface expansion, and improving the adaptability of complex guide rail structure applications.

[0017] 4. This utility model replaces the modular thin-film throttle of the prior art with a microporous integrated oil circuit. While simplifying the structure, improving reliability and reducing manufacturing costs, it optimizes the oil film stability through capillary microflow network, effectively solving the bottleneck problem caused by the dependence on elastic elements and complex assembly in the prior art. Attached Figure Description

[0018] Figure 1 The diagram shown is a structural schematic of this utility model.

[0019] Figure 2 A structural schematic diagram showing another perspective of this utility model.

[0020] Figure 3 Displayed as Figure 2 A schematic diagram of the main structure.

[0021] Figure 4 Displayed as Figure 3 A schematic diagram of the cross-sectional structure of AA.

[0022] Figure 5 Displayed as Figure 2 A top-view structural diagram.

[0023] Figure 6 Displayed as Figure 5 Schematic diagram of the cross-sectional structure of BB.

[0024] Figure 7 Displayed as Figure 5 A schematic diagram of the cross-sectional structure of CC.

[0025] Figure 8 The diagram shown is a schematic of the present invention in conjunction with a guide rail.

[0026] Component designation explanation

[0027] 1. Slider body; 2. First oil outlet surface; 3. Oil injection hole; 4. Second oil outlet surface; 5. First oil passage; 6. Second oil passage; 7. First oil outlet hole; 8. Second oil outlet hole; 9. Third oil outlet hole; 10. Fourth oil outlet hole; 11. Through hole; 12. Third oil outlet surface; 13. Guide rail. Detailed Implementation

[0028] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0029] Please see Figures 1 to 8It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should fall within the scope of the disclosed technical content. Furthermore, terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0030] Please see Figures 1-8 This invention provides a micro-orifice throttling hydrostatic guide rail slider, including a slider body 1 slidably fitted on a guide rail 13. The lower end face of the slider body 1 is provided with a first oil outlet surface 2 and an oil injection hole 3. The side end face of the slider body 1 near the guide rail is provided with a second oil outlet surface 4. The slider body 1 is provided with a first oil passage 5 and a second oil passage 6. One end of the first oil passage 5 is connected to the oil injection hole 3 and the other end extends to the second oil outlet surface 4. One end of the second oil passage 6 is connected to the first oil passage 5 and the other end is connected to the first oil outlet surface 2. This invention designs the oil passages as straight lines and simple branch channels, which can avoid high-precision structures such as spiral grooves and multi-cavity structures, reducing the difficulty of processing. This invention has no assembly links, eliminating sealing failure caused by alignment errors. The first oil outlet surface 2 is provided with a first oil outlet hole 7, and the second oil outlet surface 4 is provided with a second oil outlet hole 8; the front end face and the rear end face of the slider body 1 are both provided with a third oil outlet hole 9, which is connected to the second oil outlet hole 8; the upper end face of the slider body 1 is provided with a third oil outlet surface 12, and the third oil outlet surface 12 is provided with a fourth oil outlet hole 10, which is connected to the first oil outlet hole 7. The first oil outlet surface 2, the second oil outlet surface 4, and the third oil outlet surface 12 are all concave structures. This utility model directly processes oil passages and oil outlet holes on the slider body, which can directly form a microporous throttling capillary network on the slider to replace the thin film voltage regulator, eliminate complex modules such as independent throttling devices and elastic films, eliminate the risk of elastic element failure, effectively simplify the structure of the hydrostatic guide rail slider and improve reliability. Furthermore, the concave oil outlet surface can increase the oil storage area, strengthen the oil film continuity, and the multi-oil-hole evenly distributed design can improve the oil film uniformity. In actual use, the oil film thickness changes by 13µm, while when a multi-head pump is used for constant flow oil supply, the oil film thickness changes by 7µm. This invention maintains the load-bearing capacity while controlling the oil film thickness change within 0.002mm, thus ensuring the accuracy and rigidity of the hydrostatic guide rail.

[0031] The number of the first oil outlet 7, the second oil outlet 8, the third oil outlet 9, and the fourth oil outlet 10 is ≥2. The oil injection hole 3 connects with the first oil outlet 7, the second oil outlet 8, the third oil outlet 9, and the fourth oil outlet 10 through the first oil passage 5 and the second oil passage 6 to form a microporous throttling capillary network. In this invention, oil is injected through the oil injection hole 3, extending through the first oil passage 5 and the second oil passage 6 to the lower end face of the slider body 1 and the side end face near the guide rail. The third oil outlet 9 connects with the second oil outlet 8, extending the oil to the front and rear ends of the slider body 1. The fourth oil outlet 10 connects with the first oil outlet 7, extending the oil to the upper end face of the slider body 1. This invention's multiple oil outlet surfaces, oil outlets, and oil passages can form a network, allowing cross-surface oil passage connections, supporting multi-directional bearing surface expansion, and improving the adaptability of complex guide rail structures.

[0032] The slider body 1 is also provided with a through hole 11, with its two ends connected to the upper and lower end faces of the slider body 1, respectively. The through hole 11 reduces the direct contact area between the slider and the guide rail, thereby reducing friction and wear, and extending service life. This design allows the slider to move more smoothly, reducing heat and wear generated by friction. The through hole 11 also reduces resistance during movement, making the slider's movement on the guide rail more stable, thus improving motion accuracy. This design helps reduce impact and vibration, achieves precise positioning, and improves the response speed and sensitivity of the CNC system. In air-bearing guide rails, the through hole can be used for gas flow, aiding in heat dissipation and providing lubrication. On some guide rail sliders, the through hole can be used to install adjusting screws, facilitating horizontal and vertical adjustments of the guide rail and ensuring smooth slider operation on the guide rail.

[0033] In summary, this invention replaces the modular thin-film throttling device of the prior art with a microporous integrated oil circuit. While simplifying the structure, improving reliability, and reducing manufacturing costs, it optimizes oil film stability through a capillary flow network, effectively solving the bottleneck problems caused by the dependence on elastic elements and complex assembly in the prior art. Therefore, this invention effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0034] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A micro-holed throttling hydrostatic guideway slide characterized by, Includes a slider body (1), the lower end face of which is provided with a first oil outlet surface (2) and an oil injection hole (3); the side end face of the slider body (1) near the guide rail is provided with a second oil outlet surface (4). The slider body (1) is provided with a first oil passage (5) and a second oil passage (6). One end of the first oil passage (5) is connected to the oil injection hole (3) and the other end extends to the second oil outlet surface (4). One end of the second oil passage (6) is connected to the first oil passage (5) and the other end is connected to the first oil outlet surface (2).

2. The microporous throttling hydrostatic guide slider according to claim 1, characterized in that: The first oil outlet surface (2) is provided with a first oil outlet hole (7), and the second oil outlet surface (4) is provided with a second oil outlet hole (8).

3. The microporous throttling hydrostatic guide slider according to claim 2, characterized in that: The front and rear faces of the slider body (1) are provided with a third oil outlet hole (9), which is connected to the second oil outlet hole (8).

4. The microporous throttling hydrostatic guide slider according to claim 3, characterized in that: The upper end face of the slider body (1) is provided with a third oil outlet surface (12), and a fourth oil outlet hole (10) is provided on the third oil outlet surface (12). The fourth oil outlet hole (10) is connected to the first oil outlet hole (7).

5. The micro-holed restricted static pressure guideway slide of claim 4, wherein: The number of the first oil outlet (7), the second oil outlet (8), the third oil outlet (9), and the fourth oil outlet (10) are all ≥2. The oil injection hole (3) is connected with the first oil outlet (7), the second oil outlet (8), the third oil outlet (9), and the fourth oil outlet (10) through the first oil passage (5) and the second oil passage (6) to form a microporous throttling capillary network.

6. The micro-holed restricted static pressure guideway slide of claim 4 wherein: The first oil outlet surface (2), the second oil outlet surface (4), and the third oil outlet surface (12) are all concave structures.

7. The microporous throttling hydrostatic guide slider according to claim 1, characterized in that: The slider body (1) is also provided with a through hole (11), and the two ends of the through hole (11) are respectively connected to the upper end face and the lower end face of the slider body (1).

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