Heavy-load high-rigidity hydrostatic guide rail sliding block device

Abstract

The invention relates to the technical field of precision and ultra-precision machining, in particular to a heavy-load high-rigidity hydrostatic guide rail sliding block device. Comprising a guide rail, a sliding block body and two bearing pieces, two symmetrical V-shaped grooves and a first oil inlet flow channel are formed in the sliding block body, the two V-shaped grooves form openings in the bottom of the sliding block body, and bearing strips can be symmetrically installed in the two symmetrical V-shaped grooves in the sliding block body; and first bearing oil cavities communicating with the first oil inlet runner are formed in the tops of the two symmetrical V-shaped grooves in the sliding block body. According to the heavy-load high-rigidity hydrostatic guide rail sliding block device, the second bearing oil cavity is formed in the central symmetry face, facing the sliding block body, of the bearing piece, and the first bearing oil cavities are further formed in the tops of the two symmetrical V-shaped grooves in the sliding block body on the basis, so that the area of the bearing oil cavities can be effectively increased; the bearing capacity and the rigidity of the hydrostatic guide rail sliding block device bearing loads in the vertical direction are enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of precision and ultra-precision machining, and particularly relates to a large-load and high-stiffness hydrostatic guideway slider device. Background Art

[0002] Compared with traditional rolling guideways, hydrostatic guideways have the advantages of low moving friction, excellent dynamic performance, good rigidity, no wear, and long working life, and are core functional components commonly used in ultra-precision machine tools. At present, the structures of hydrostatic guideways at home and abroad mainly include two types: T-shaped structure and U-shaped structure. The T-shaped guideway consists of a T-shaped support fixed guideway and an outer slider, and the outer slider moves along the T-shaped support fixed guideway. Among them, oil cavities are distributed on the outer slider, and the outer slider is composed of a front sliding platform, a side sliding platform, and a rear sliding platform. The U-shaped guideway structure consists of a slider, a sliding platform, and a U-shaped support fixed guideway, and the slider drives the sliding platform to move along the U-shaped support fixed guideway. Among them, the sliding table is composed of a moving slider and a follower slider, the U-shaped support fixed guideway is composed of a front fixed guideway, side fixed guideways, and a rear fixed guideway, and oil cavities are distributed on the moving slider. The existing hydrostatic guideways are limited by the size of the slider, and their load-bearing performance and stiffness cannot meet the technical requirements of heavy-load and high-rigidity equipment. Summary of the Invention

[0003] The present invention provides a large-load and high-stiffness hydrostatic guideway slider device to solve the problem that the load-bearing performance and stiffness of the existing hydrostatic guideways cannot meet the technical requirements of heavy-load and high-rigidity equipment due to being limited by the size of the slider.

[0004] The present invention provides a large-load and high-stiffness hydrostatic guideway slider device, including: A guideway; A slider body, inside which two symmetric V-shaped grooves and a first oil inlet channel are provided. The two V-shaped grooves form openings at the bottom of the slider body, and at the top of the V-shaped grooves, there are first load-bearing oil cavities communicating with the first oil inlet channel. Two load-bearing members, symmetrically arranged in the two V-shaped grooves. The load-bearing members are in sliding fit with the guideway and are fixedly connected to the slider body. The load-bearing members are provided with second load-bearing oil cavities and a first oil outlet channel towards the central symmetry plane of the slider body. The first oil outlet channel communicates with the first load-bearing oil cavity and the second load-bearing oil cavity, and inside the load-bearing members, there is a second oil inlet channel communicating with the second load-bearing oil cavity.

[0005] According to the large-load and high-stiffness hydrostatic guideway slider device provided by the present invention, at least two first load-bearing oil cavities are provided at the top of the two V-shaped grooves, and the at least two first load-bearing oil cavities are arranged at intervals along the length direction of the slider body.

[0006] According to a large-load and high-rigidity hydrostatic guideway slider device provided by the present invention, at least two mounting holes are provided on the side wall of the slider body, a restrictor is provided in the mounting hole, at least two of the first oil inlet channels are provided inside the slider body, and the oil outlet of the restrictor is in one-to-one correspondence and communication with the first load-bearing oil cavity through the first oil inlet channel.

[0007] According to a large-load and high-rigidity hydrostatic guideway slider device provided by the present invention, a first main oil inlet channel and at least two branch oil channels are further provided inside the slider body. One end of the branch oil channel is communicated with the first main oil inlet channel, and the other end of the branch oil channel is communicated with the oil inlet of the corresponding restrictor.

[0008] According to a large-load and high-rigidity hydrostatic guideway slider device provided by the present invention, a connection hole is provided on the side wall of the slider body, a bolt is provided in the connection hole, and the load-bearing member is connected to the slider body through the bolt.

[0009] According to a large-load and high-rigidity hydrostatic guideway slider device provided by the present invention, two first load-bearing surfaces are provided on one side of each load-bearing member facing the central symmetry plane of the slider body. Two second load-bearing oil cavities are provided in the load-bearing member, and the two second load-bearing oil cavities are correspondingly arranged on the two first load-bearing surfaces and extend along the length direction of the slider body.

[0010] According to a large-load and high-rigidity hydrostatic guideway slider device provided by the present invention, the four first load-bearing surfaces are symmetrically arranged in pairs on both sides of the central symmetry plane of the slider body.

[0011] According to a large-load and high-rigidity hydrostatic guideway slider device provided by the present invention, it further includes: Two sealing strips, the two sealing strips are correspondingly arranged on two opposite sides with openings, and the sealing strips are in sealing cooperation with the guideway and the slider body.

[0012] According to a large-load and high-rigidity hydrostatic guideway slider device provided by the present invention, it further includes: Two flow dividing blocks, the two flow dividing blocks are respectively arranged at both ends of the slider body, and a first sealing gasket is provided between the flow dividing block and the end face of the slider body.

[0013] According to a large-load and high-rigidity hydrostatic guideway slider device provided by the present invention, it further includes: Two sealing plates, the two sealing plates are correspondingly arranged on one side of the two flow dividing blocks facing away from the slider body, the sealing plate is provided with a first clamping groove, the sealing plate is slidably matched with the guide rail through the first clamping groove, and a second sealing gasket is arranged on the side of the first clamping groove, and the second sealing gasket is sealingly matched with the guide rail.

[0014] In the large-load and high-rigidity hydrostatic guide rail slider device provided by the present invention, a second bearing oil cavity is arranged on one side of the bearing member facing the central symmetry plane of the slider body. On this basis, a first bearing oil cavity is also arranged at the top of two symmetrical V-shaped grooves, so that the area of the bearing oil cavity can be effectively increased, and the bearing capacity and rigidity of the hydrostatic guide rail slider device when bearing loads in the up and down directions can be enhanced. Brief Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 The exploded structural schematic diagram of the large-load and high-rigidity hydrostatic guide rail slider device provided by the present invention is illustrated.

[0017] Figure 2 The top view structural schematic diagram of the large-load and high-rigidity hydrostatic guide rail slider device provided by the present invention is illustrated.

[0018] Figure 3 Along Figure 2 The sectional structural schematic diagram taken along the section line A-A in the middle.

[0019] Figure 4 Along Figure 2 The sectional structural schematic diagram taken along the section line B-B in the middle.

[0020] Figure 5 The three-dimensional structural schematic diagram of the slider body provided by the present invention is illustrated.

[0021] Figure 6 The sectional structural schematic diagram of the slider body provided by the present invention is illustrated.

[0022] Figure 7 The three-dimensional structural schematic diagram of the bearing member provided by the present invention is illustrated.

[0023] Figure 8 The sectional structural schematic diagram of the bearing member provided by the present invention is illustrated.

[0024] Figure 9Illustrates one of the three-dimensional structural schematic diagrams of the flow splitting block provided by the present invention.

[0025] Figure 10 Illustrates another three-dimensional structural schematic diagram of the flow splitting block provided by the present invention.

[0026] Reference numerals: 10. Guide rail; 20. Slide block body; 21. V-shaped groove; 22. First oil inlet flow channel; 23. First bearing oil cavity; 24. Throttle; 25. First main oil inlet flow channel; 26. Branch flow channel; 27. Bolt; 30. Bearing member; 31. Second bearing oil cavity; 32. First oil outlet flow channel; 33. Second oil inlet flow channel; 40. Sealing strip; 50. Flow splitting block; 51. First sealing gasket; 52. Oil inlet cavity; 60. Sealing plate; 61. Second sealing gasket. Detailed implementation manners

[0027] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without creative efforts shall fall within the protection scope of the present invention.

[0028] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of 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 thus should not be construed as a limitation to the embodiments of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance.

[0029] In the description of the embodiments of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected to" 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 directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0030] In an embodiment of the present invention, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0031] In the description of this specification, the description with reference to terms such as "an embodiment", "some embodiments", "an example", "a specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0032] The following will be combined with Figures 1 to 10 Describe the specific structure of the large-load and high-rigidity hydrostatic guideway slider device of the present invention.

[0033] As Figures 1 to 4 shown, the large-load and high-rigidity hydrostatic guideway slider device includes a guideway 10, a slider body 20, and two bearing members 30. There are two symmetric V-shaped grooves 21 and a first oil inlet passage 22 arranged inside the slider body 20. The V-shaped grooves 21 extend along the length direction of the slider body 20. The two V-shaped grooves 21 form openings at the bottom of the slider body 20. The two bearing members 30 are installed in the two V-shaped grooves 21 and are in sliding fit with the guideway 10. A first bearing oil cavity 23 communicating with the first oil inlet passage 22 is arranged at the top of the two V-shaped grooves 21.

[0034] The two bearing members 30 are symmetrically arranged on both sides of the central symmetry plane of the slider body 20. The bearing members 30 are in sliding fit with the guideway 10 and are fixedly connected to the slider body 20. A second bearing oil cavity 31 and a first oil outlet passage 32 are arranged on the side of the bearing member 30 facing the slider body 20. The first oil outlet passage 32 communicates with the first bearing oil cavity 23 and the second bearing oil cavity 31. A second oil inlet passage 33 communicating with the second bearing oil cavity 31 is arranged inside the bearing member 30.

[0035] The large-load and high-rigidity hydrostatic guideway slider device provided by the present invention is provided with a second bearing oil cavity 31 on one side of the bearing member 30 facing the central symmetry plane of the slider body 20. On this basis, a first bearing oil cavity 23 is also provided at the top of the two V-shaped grooves 21, so that the area of the bearing oil cavity can be effectively increased, and the bearing capacity and rigidity of the hydrostatic guideway slider device when bearing loads in the up and down directions can be enhanced.

[0036] In an embodiment of the present invention, as Figure 7 and Figure 8 shown, the bearing member 30 has a strip-shaped block structure, the bearing member 30 extends along the length direction of the slider body 20, and two first bearing surfaces are provided on one side of each bearing member 30 facing the central symmetry plane of the slider body 20. The first bearing surfaces are rectangular, the lengths and widths of the two first bearing surfaces are equal, and the two first bearing surfaces are symmetrically arranged with respect to the horizontal plane. The two bearing members 30 altogether have four first bearing surfaces, and the four first bearing surfaces are symmetrically arranged in pairs on both sides of the central symmetry plane of the slider body 20.

[0037] In this embodiment, the bearing member 30 is provided with two second bearing oil cavities 31, and the lengths, widths, and depths of the two second bearing oil cavities 31 are equal. The two second bearing oil cavities 31 are correspondingly provided on the two first bearing surfaces, and the two second bearing oil cavities 31 are symmetrically arranged with respect to the horizontal plane. The second bearing oil cavity 31 extends along the length direction of the slider body 20, so that the area of the second bearing oil cavity 31 can be increased, and the bearing capacity and rigidity of the hydrostatic guideway slider device when bearing loads in the up and down directions can be further enhanced. Since the bearing member 30 is the core part for bearing, it needs to be heat-treated with high-carbon steel to improve its performance, and its symmetric structural design greatly reduces the manufacturing and measurement difficulties.

[0038] In an embodiment of the present invention, as Figure 7 and Figure 8 shown, the first oil outlet flow channel 32 is located on the side of the bearing member 30 facing the slider body 20. The first oil outlet flow channel 32 has a groove-like structure and extends along the length direction of the slider body 20. During operation, a first gap is formed between the guide rail 10 and the top walls of the two V-shaped grooves 21, a second gap is formed between the first bearing surface and the second bearing surface, the first gap is communicated with the first bearing oil cavity 23, the second gap is communicated with the first gap, the second bearing oil cavity 31, and the first oil outlet flow channel 32. The oil liquid flowing out of the first bearing oil cavity 23 first flows into the second gap through the first gap, and then flows into the first oil outlet flow channel 32 through the second gap. The oil liquid flowing out of the second bearing oil cavity 31 flows into the first oil outlet flow channel 32 through the second gap.

[0039] In an embodiment of the present invention, as Figure 1 and Figure 3As shown, a connecting hole is provided on the side wall of the slider body 20. The connecting hole is a through hole, and a bolt 27 is arranged in the connecting hole. The bearing member 30 is connected to the slider body 20 through the bolt 27. By using the bolt 27 to connect the bearing member 30 and the slider body 20, a split design between the bearing member 30 and the slider body 20 is realized, effectively reducing the manufacturing, measuring, and assembling and adjusting difficulties. Specifically, the existing hydrostatic slider adopts an integral slider body design scheme. The complex structure of the slider leads to great processing difficulty, great difficulty in controlling key dimensions, and a wide tolerance zone, ultimately resulting in problems such as inability to adjust the oil film clearance of the hydrostatic guide rail and low consistency of the oil film clearance. In the present invention, the bearing member 30 and the slider body 20 adopt a split design. The slider body 20 undertakes functions such as installation, use, and support of the bearing member 30, while the bearing member 30 undertakes functions such as hydrostatic support on both left and right sides and adjustment of the oil film clearance. After the two are separated, the manufacturing, measuring, and assembling and adjusting difficulties of the hydrostatic slider are greatly reduced. The precise adjustment of the oil film clearance can be achieved by configuring slider bodies 20 and bearing members 30 with different sizes, and the consistency of the oil film clearance between each slider body 20 is ensured. For the oil film clearance between the upper surface of the guide rail 10 and the bottom surface of the slider body cavity, due to the structure being processed by a better processing technology, the high-precision control of the oil film clearance is effectively ensured. The manufacturing and assembling and adjusting of the hydrostatic guide rail slider can be realized synchronously, effectively solving the problems of difficult installation and adjustment of the hydrostatic guide rail slider, poor consistency of the oil film clearance, and inability to mass-produce.

[0040] In an embodiment of the present invention, as Figure 8 shown, two second oil inlet channels 33 are arranged inside the bearing member 30. The two second oil inlet channels 33 extend along the length direction of the slider body 20 and form an oil inlet at the end of the bearing member 30. One of the second oil inlet channels 33 is communicated with the upper second bearing oil cavity 31, and the other second oil inlet channel 33 is communicated with the lower second bearing oil cavity 31.

[0041] In an embodiment of the present invention, the cross-section of the guide rail 10 is in an X shape. Both sides of the guide rail 10 have two second bearing surfaces. The two second bearing surfaces on the same side of the guide rail 10 are symmetrically arranged up and down with respect to the horizontal plane, and the second bearing surfaces on both sides of the guide rail 10 are symmetrically arranged left and right with respect to the vertical plane. The second bearing surface is parallel and slidably matched with the corresponding first bearing surface. The slider body 20 is jointly composed of four symmetrically distributed bearing surfaces, which can realize the restriction of five degrees of freedom of the slider body 20, enabling the slider body 20 to simultaneously bear loads in the up, down, left, right, and torsional directions. Using the guide rail 10 with a cross-section in an X shape enables the slider body 20 to have better stability and load-bearing capacity when bearing loads from various directions. Especially in heavy-load and high-precision machining scenarios, it can effectively disperse stress, reduce deformation, and improve the service life and reliability of the guide rail 10. Through the up-and-down symmetric and left-and-right symmetric arrangement of the bearing surfaces, the uniform load-bearing of the guide rail 10 under multi-directional forces is ensured, thereby enhancing the rigidity and motion accuracy of the entire device.

[0042] In one embodiment of the present invention, as Figure 5 shown, two first load-bearing oil cavities 23 are provided at the tops of two V-shaped grooves 21. Of course, the number of the first load-bearing oil cavities 23 is not limited to two, and can also be three, four or more. The two first load-bearing oil cavities 23 are arranged at intervals along the length direction of the slider body 20, forming two independent load-bearing oil cavities; preferably, the lengths, widths and depths of the two first load-bearing oil cavities 23 are equal. By providing two independent load-bearing oil cavities, the stability of the slider body 20 under non-centered loads and load fluctuations can be improved, and further the motion accuracy of the slider of the hydrostatic guide rail 10 can be improved.

[0043] In one embodiment of the present invention, as Figure 6 shown, two mounting holes are provided on the side wall of the slider body 20. Of course, the number of the mounting holes is not limited thereto, and is specifically determined according to the number of the first load-bearing oil cavities 23. A restrictor 24 is provided in the mounting hole, and two first oil inlet channels 22 are provided inside the slider body 20. Of course, the number of the first oil inlet channels 22 is not limited thereto, and is specifically determined according to the number of the first load-bearing oil cavities 23. The first oil inlet channels 22 extend along the width direction of the slider body 20, and the oil outlet of the restrictor 24 is in one-to-one correspondence and communication with the first load-bearing oil cavity 23 through the first oil inlet channel 22. The restrictor 24 is used to control the flow rate of the oil entering the first load-bearing oil cavity 23. By providing a plurality of restrictors 24 and first oil inlet channels 22, the oil supply amount and flow rate of each first load-bearing oil cavity 23 can be accurately adjusted, the stability and rigidity of the operation of the slider body 20 can be improved, and different load conditions can be adapted.

[0044] In one embodiment of the present invention, as Figure 6 shown, a first main oil inlet channel 25 and at least two branch oil channels 26 are further provided inside the slider body 20. The first main oil inlet channel 25 extends along the length direction of the slider body 20 and extends to the end face of the slider body 20. The first main oil inlet channel 25 is used to supply oil to the branch oil channels 26. The branch oil channels 26 are used to supply oil to the first load-bearing oil cavity 23. In this embodiment, two branch oil channels 26 are provided. The branch oil channels 26 extend along the width direction of the slider body 20. One end of the branch oil channel 26 is communicated with the first main oil inlet channel 25, and the other end of the branch oil channel 26 is communicated with the oil inlet of the corresponding restrictor 24. Through the cooperation of the first main oil inlet channel 25 and the branch oil channels 26, the efficient distribution of the oil is realized, ensuring that each first load-bearing oil cavity 23 can obtain a stable and uniform oil supply, effectively simplifying the oil circuit system, reducing the complexity of the oil supply, and at the same time enhancing the maintainability and expandability of the system. In addition, this structure can also adapt to the change of the oil demand under different working conditions, improving the adaptability and flexibility of the whole device.

[0045] In one embodiment of the present invention, as Figure 1 shown, the large-load high-rigidity hydrostatic guideway slider device further includes two sealing strips 40. The two sealing strips 40 are correspondingly arranged on two opposite sides with openings. The sealing strip 40 extends along the length direction of the slider body 20, and the sealing strip 40 is in sealing cooperation with the guideway 10 and the slider body 20. The sealing strip 40 is used to seal the gap between the guideway 10 and the bottom of the slider body 20 to prevent the leakage of oil from the gap between the guideway 10 and the bottom of the slider body 20. Preferably, the sealing strip 40 is a sealing member with a double-sealing lip structure. Among them, the inner lip can prevent the leakage of the oil inside the slider body 20 and can achieve the complete recovery of the static pressure oil. The outer lip can prevent the entry of external contamination and cause the problem of oil contamination, realizing the overall internal and external sealing and isolation of the slider device.

[0046] In one embodiment of the present invention, as Figure 1 、 Figure 9 and Figure 10 shown, the large-load high-rigidity hydrostatic guideway slider device further includes two flow dividing blocks 50. The flow dividing blocks 50 are in a block structure. The two flow dividing blocks 50 are respectively arranged at both ends of the slider body 20. A first sealing gasket 51 is arranged between the flow dividing block 50 and the end face of the slider body 20. The shape of the first sealing gasket 51 is adapted to the shape of the cross-section of the guideway 10. The first sealing gasket 51 is used to seal between the flow dividing block 50 and the end face of the slider body 20 circumferentially to prevent the leakage of oil. Preferably, the first sealing gasket 51 is a sealing member with a double-sealing lip structure.

[0047] In one embodiment of the present invention, as Figure 9 shown, the flow dividing block 50 is provided with a first oil inlet. On the side of the flow dividing block 50 facing the slider body 20, there is an oil inlet cavity 52. The oil inlet cavity 52 is communicated with the second oil inlet flow channel 33 and the first oil inlet. A bearing member oil inlet sealing gasket is arranged between the oil inlet cavity 52 and the second oil inlet flow channel 33. The bearing member oil inlet sealing gasket is used to seal the gap between the oil inlet cavity 52 and the second oil inlet flow channel 33. The bearing member oil inlet sealing gasket, the bearing member 30 and the flow dividing block 50 are fitted to enclose the oil inlet cavity 52.

[0048] Furthermore, on the side of the flow dividing block 50 facing the slider body 20, there is also an oil return cavity. The oil return cavity is communicated with the first oil outlet flow channel 32. On the side of the slider body 20 facing the flow dividing block 50, there is an oil return cavity sealing gasket. The oil return cavity sealing gasket, the bearing member 30 and the flow dividing block 50 are fitted to enclose the oil return cavity. The flow dividing block 50 is provided with an oil outlet, and the oil outlet is communicated with the oil return cavity.

[0049] Further, the flow dividing block 50 is provided with a second oil inlet, the second oil inlet is communicated with the first main oil inlet flow channel 25, and a slider body oil inlet channel sealing ring is further arranged on one side of the flow dividing block 50 facing the slider body 20. The slider body oil inlet channel sealing ring is arranged between the first main oil inlet flow channel 25 and the second oil inlet.

[0050] During operation, one path of oil first enters the oil inlet cavity 52 through the first oil inlet, then enters the second oil inlet flow channel 33 and enters the second bearing oil cavity 31; the other path of oil first enters the first main oil inlet flow channel 25 through the second oil inlet, then enters the flow restrictor 24 through the branch flow channel 26. The oil after the flow is regulated by the flow restrictor 24 enters the first oil inlet flow channel 22, and then enters the first bearing oil cavity 23 through the first oil inlet flow channel 22. The oil flowing out of the first bearing oil cavity 23 first flows into the second gap through the first gap, and then flows into the first oil outlet flow channel 32 through the second gap. The oil flowing out of the second bearing oil cavity 31 flows into the first oil outlet flow channel 32 through the second gap. The oil flowing out of the first oil outlet flow channel 32 enters the oil return cavity and finally flows out through the oil outlet.

[0051] In an embodiment of the present invention, as Figure 1 shown, the large-load and high-rigidity hydrostatic guide rail slider device further includes two sealing plates 60. The two sealing plates 60 are correspondingly arranged on one side of the two flow dividing mechanisms facing away from the slider body 20. The sealing plate 60 is provided with a first clamping groove. The sealing plate 60 is slidably matched with the guide rail 10 through the first clamping groove. A second sealing gasket 61 is arranged on the side of the first clamping groove. The second sealing gasket 61 is hermetically matched with the guide rail 10. The second sealing gasket 61 is used to seal the gap between the guide rail 10 and the sealing plate 60.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A large-load and high-rigidity hydrostatic guideway slider device, characterized in that Comprising: Guide rail (10); Slider body (20), inside which there are two symmetric V-shaped grooves (21) and a first oil inlet flow channel (22). The two V-shaped grooves (21) form openings at the bottom of the slider body (20), and at the top of the two V-shaped grooves (21) there is a first load oil cavity (23) communicating with the first oil inlet flow channel (22); Two bearing members (30), symmetrically arranged in the two V-shaped grooves (21). The bearing members (30) are in sliding fit with the guide rail (10) and fixedly connected to the slider body (20). On the side of the bearing member (30) facing the slider body (20), there is a second load oil cavity (31) and a first oil outlet flow channel (32). The first oil outlet flow channel (32) communicates with the first load oil cavity (23) and the second load oil cavity (31). Inside the bearing member (30), there is a second oil inlet flow channel (33) communicating with the second load oil cavity (31).

2. The large-load and high-rigidity hydrostatic guideway slider device according to claim 1, wherein, At the top of the two V-shaped grooves (21), there are at least two first load oil cavities (23), and the at least two first load oil cavities (23) are arranged at intervals along the length direction of the slider body (20).

3. The large-load and high-rigidity hydrostatic guideway slider device according to claim 2, characterized in that, On the side wall of the slider body (20), there are at least two mounting holes, inside which there are throttlers (24). Inside the slider body (20), there are at least two first oil inlet flow channels (22). The oil outlet of the throttler (24) is in one-to-one correspondence and communication with the first load oil cavity (23) through the first oil inlet flow channel (22).

4. The large-load and high-rigidity hydrostatic guideway slider device according to claim 3, characterized in that, Inside the slider body (20), there are also a first main oil inlet flow channel (25) and at least two branch flow channels (26). One end of the branch flow channel (26) is in communication with the first main oil inlet flow channel (25), and the other end of the branch flow channel (26) is in communication with the oil inlet of the corresponding throttler (24).

5. The large-load and high-rigidity hydrostatic guideway slider device according to any one of claims 1 to 4, characterized in that, On the side wall of the slider body (20), there is a connection hole, in which there is a bolt (27). The bearing member (30) is connected to the slider body (20) through the bolt (27).

6. The large-load and high-rigidity hydrostatic guideway slider device according to claim 5, characterized in that, On the side of each bearing member (30) facing the central symmetry plane of the slider body (20), there are two first load surfaces. The bearing member (30) is provided with two second load oil cavities (31), and the two second load oil cavities (31) are correspondingly arranged on the two first load surfaces and extend along the length direction of the slider body (20).

7. The large-load and high-rigidity hydrostatic guideway slider device according to claim 6, characterized in that, The four first load surfaces are arranged symmetrically in pairs on both sides of the central symmetry plane of the slider body (20).

8. The large-load and high-rigidity hydrostatic guideway slider device according to any one of claims 1 to 4, characterized in that Also comprising: Two sealing strips (40), correspondingly arranged on the two opposite sides of the opening. The sealing strips (40) are in sealing fit with the guide rail (10) and the slider body (20).

9. The large-load and high-rigidity hydrostatic guideway slider device according to claim 8, characterized in that, Also comprising: Two flow diverter blocks (50) are respectively arranged at two ends of the slider body (20), and a first sealing gasket (51) is arranged between the flow diverter block (50) and the end surface of the slider body (20).

10. The large-load and high-rigidity hydrostatic guideway slider device according to claim 9, characterized in that, Also includes: Two sealing plates (60), the two sealing plates (60) are arranged one by one on the side of the two diverter blocks (50) away from the slider body (20), the sealing plates (60) are provided with a first card slot, the sealing plates (60) are slidably matched with the guide rail (10) through the first card slot, and a second sealing gasket (61) is provided on the side of the first card slot, and the second sealing gasket (61) is sealed with the guide rail (10).

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