Novel hydrostatic pressure slide rail

Abstract

The utility model belongs to the technical field of hydrostatic pressure, and particularly relates to a novel hydrostatic pressure sliding rail which solves the problem that a fluid channel and a pressure storage groove of a sliding block are inconvenient to clean, maintain and replace. The novel hydrostatic pressure sliding rail comprises a supporting rail and a sliding block connected to the supporting rail in a sliding mode, a plurality of pressure storage grooves are formed in the sliding face of the sliding block, the pressure storage grooves are connected with a pressurized fluid supply assembly through fluid channels, a split block is detachably arranged on the sliding block, and the split block is connected with the supporting rail. The pressure storage groove is formed in the inner end face of the split block, and the fluid channel is arranged in the split block. According to the sliding rail, the corresponding split blocks can be conveniently detached to maintain, repair and replace the fluid channel and the pressure storage tank, and the later maintenance convenience and economical efficiency are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of fluid static pressure technology, and particularly relates to a novel fluid static pressure slide rail. BACKGROUND

[0002] For the current various tool machines, whether it is a workpiece bearing platform or a tool platform carrying a cutter and a grinding wheel for synchronous movement, basically, a traditional sliding friction mode is used for movement, so that considerable nonlinear friction force is generated between the upper and lower mechanical sliding surfaces, which not only causes stick-slip movement during planar movement and affects the positioning accuracy of the system, but also generates considerable temperature rise under rapid or long-term movement friction, even if forced lubrication is used, the sliding surfaces still generate considerable heat temperature rise under long-term friction, which causes thermal deformation of the bearing platform and the working sliding rail, and seriously affects the machining and positioning accuracy.

[0003] In order to realize the floating sliding of the sliding block on the slide rail, various fluid static pressure slide rails appear in the prior art, which separate the friction contact between the sliding block and the sliding block by applying a fluid film therebetween, so as to realize the stability of sliding accuracy.

[0004] However, in actual conditions, the flow channel for conveying fluid on the sliding block and the pressure accumulation cavity for forming fluid static pressure may be blocked, cleaned and the like, and the flow channel and the pressure accumulation groove are directly formed on the sliding block, which is obviously inconvenient for later maintenance and repair, in addition, when different types of fluid need to be replaced to realize corresponding static pressure suspension, the size and other conditions of the fluid channel and the pressure accumulation cavity cannot be adaptively adjusted, and only the entire sliding block can be replaced, which is poor in compatibility and economy. UTILITY MODEL CONTENTS

[0005] The utility model aims at the above problems existing in the prior art, and provides a novel fluid static pressure slide rail.

[0006] In order to realize the purpose of the utility model, the following technical schemes can be used:

[0007] A novel fluid static pressure slide rail, comprising a support rail and a sliding block slidingly connected to the support rail, a plurality of pressure accumulation grooves are arranged on the sliding surface of the sliding block, the pressure accumulation grooves are connected with a pressurized fluid supply assembly through fluid channels, a split block is detachably arranged on the sliding block, the pressure accumulation grooves are formed on the sliding block, the inner end surface of the split block or between the inner end of the split block and the sliding surface, and the fluid channels are arranged in the sliding block and / or the split block.

[0008] The utility model discloses a slide rail is fixedly provided with the split piece on the sliding block, and the fixing has flexible detachability, which is equivalent to cutting the split piece on the corresponding position of the sliding block, the fluid channel is arranged on the split piece, and the pressure storage groove is formed on the split piece or between the split piece and the sliding block.

[0009] In the novel fluid static pressure slide rail, the cross section of the support rail is in the shape of an I-beam, the sliding block has a T-shaped groove extending axially therethrough, and the sliding surface comprises a top surface, a side surface and a bottom surface of the T-shaped groove.

[0010] The support rail is in a straight line shape, comprising a sliding installation strip at the upper portion and a bottom support strip at the lower portion, and being integrally connected through a connecting segment, the sliding installation strip is slid in the horizontal segment inside the T-shaped groove, the connecting segment is slid in the vertical segment at the opening of the T-shaped groove, the groove wall of the T-shaped groove is the sliding surface, and the pressure storage groove is arranged on the top surface, the bottom surface and the side surface of the horizontal segment, so that the support in the vertical direction and the central positioning in the horizontal direction are realized, the frictional contact between the sliding block and the support rail is effectively avoided, and the sliding precision is ensured.

[0011] In the novel fluid static pressure slide rail, the split piece comprises a top split piece and / or a side split piece, the top split piece is inserted and fixed in the vertical sliding groove of the sliding block, and the side split piece is inserted and fixed in the transverse sliding groove of the sliding block.

[0012] The top split piece is vertically inserted in the sliding block and is mainly used for forming the pressure storage groove on the top surface of the sliding groove, and the corresponding fluid channel is formed in the top split piece; the side split piece is horizontally inserted into the transverse sliding groove of the sliding block and is mainly used for forming the pressure storage groove on the side surface and the bottom surface of the sliding groove, and the fluid channel corresponding to each pressure storage groove is arranged in the split piece.

[0013] In the novel fluid static pressure slide rail, the top split piece and the vertical sliding groove are mutually adapted rectangles, the vertical sliding groove vertically extends through the top of the sliding block, and the lower end is communicated with the top surface of the T-shaped groove.

[0014] The lower end surface of the top split piece is formed with the pressure storage groove, and the lower end of the top split piece is flush with the top surface of the sliding groove.

[0015] Alternatively, the lower end face of the top part is located inside the vertical slide groove, and the pressure accumulator groove is formed between the lower end face and the lower port of the vertical slide groove.

[0016] The dimensions of the top section and the vertical chute are matched. As one method of setting the pressure accumulator, a recessed groove is directly set on the lower end face of the top section, which is the pressure accumulator. As another method, the lower end face of the top section is a simple plane, but the plane is recessed into the vertical chute. The pressure accumulator is formed between the plane and the inner sidewall of the lower end of the vertical chute. There are various ways to set the pressure accumulator.

[0017] As an optimization, two pressure accumulators are distributed along the width direction on the top surface of the slide groove. These pressure accumulators apply fluid pressure to the left and right sides of the top surface of the support track, respectively, to ensure the stable sliding of the slider.

[0018] In the aforementioned novel hydrostatic slide rail, the vertical slide groove is provided with an annular inner step, the top part is provided with an annular outer step, the inner step and the outer step are in close contact, and a sealing ring assembly is provided between the outer step and the inner step.

[0019] The top section is inserted vertically until its outer step abuts against the inner step of the vertical slide groove. This serves two purposes: positioning and positioning. It is particularly suitable for designs where the pressure accumulator is formed between the top section and the vertical slide groove. The sealing ring assembly between the inner and outer steps effectively ensures the sealing of the pressure accumulator and prevents fluid from leaking out between the top section and the vertical slide groove.

[0020] Furthermore, protrusions and grooves that can interlock and match are respectively provided on the inner and outer steps to achieve stable positioning in the horizontal direction. The cross-section of the protrusion can be triangular or rectangular. The front end of the rectangular protrusion is provided with a trapezoidal part, and the bottom of the corresponding groove is provided with an inclined surface. The inclined surface of the trapezoidal part abuts against the inclined surface.

[0021] In the aforementioned novel hydrostatic slide rail, the side section and the transverse slide groove are L-shaped and mutually compatible. The transverse slide groove extends along the width direction of the slider and is connected to the side surface and bottom surface of the slide groove, respectively.

[0022] The side section is L-shaped and inserted into the horizontal slide groove. Its horizontal section extends to the bottom of the slide groove, and the inner side of the vertical section is flush with the side of the slide groove. Moreover, the front end of the horizontal section abuts against the inner side of the horizontal slide groove, which has a positioning effect.

[0023] In the above-mentioned novel hydrostatic slide rail, the inner vertical surface of the side part is flush with the side surface of the slide groove, the inner horizontal surface of the side part is flush with the bottom surface of the slide groove, and pressure storage grooves are formed in both the inner vertical surface and the inner horizontal surface.

[0024] The transverse sliding groove comprises a vertical section and a horizontal section, the vertical section transversely penetrates the side of the sliding block and communicates with the side of the sliding groove, and the horizontal section extends below the bottom surface of the sliding groove and has a top surface flush with the bottom surface of the sliding groove

[0025] The horizontal section of the side part body is flush with the bottom surface of the sliding groove, the vertical section is flush with the side of the sliding groove, an upward opening pressure storage groove is formed on the inner horizontal surface of the top of the horizontal section, and an inward opening pressure storage groove is formed on the inner vertical surface of the vertical section.

[0026] In the new fluid static pressure sliding rail, the front end of the side part body is provided with a positioning protrusion or a positioning groove, a corresponding positioning groove or a positioning protrusion is arranged on the inner side wall of the transverse sliding groove, and the positioning protrusion is inserted into the positioning groove; the cross section of the positioning protrusion is triangular or rectangular, the front end of the rectangular positioning protrusion is provided with an easy-to-enter chamfer, and the shape of the positioning groove is adapted to the positioning protrusion.

[0027] The front end of the horizontal section of the side part body and the inner side surface of the transverse sliding groove are positioned by the positioning protrusion and the positioning groove, the side part body is ensured to be installed in place, vertical support force can be provided for the front end of the horizontal section of the side part body, and the structural stability is ensured.

[0028] In the new fluid static pressure sliding rail, the fluid channel is connected with an active throttler assembly, the active throttler assembly is arranged on a split body or a sliding block, a pipeline joint in communication with the fluid channel is arranged on the outer wall of the split body or the sliding block, and the pipeline joint is connected with a pressurized fluid supply assembly through a fluid pipe.

[0029] The active throttler assembly can detect the fluid pressure in the pressure storage groove and adjust the fluid pressure to a suitable range according to a set program, and the pressurized fluid supply assembly is used for specifically inputting the fluid after pressurization to meet the pressure requirement of the corresponding pressure storage groove. The active throttler assembly and the pressurized fluid supply assembly are prior art and are not further expanded.

[0030] In the new fluid static pressure sliding rail, the outer end of the split body is provided with a fixing lug, the sliding block is provided with a corresponding blind groove, and the fixing lug is fixed in the blind groove through a bolt.

[0031] The fixing lug of the split body is sunk in the blind groove, the flatness of the overall structure is ensured, and the fixing lug and the sliding block are fixed through a bolt and have flexible detachability.

[0032] Of course, the pressurized fluid supply assembly and the active throttle assembly are connected to the corresponding control panel, and the input pressure of the fluid can be controlled according to the actual load pressure of the slider and the pressure in the pressure accumulation cavity, so that the stable sliding of the slider is ensured, wherein the control logic is a known common sense, and is not the focus of the application, and is not expanded again.

[0033] In addition, the slider can be connected with a corresponding sliding driving assembly, and the sliding driving assembly provides a sliding driving force, and the sliding driving assembly is a known common sense, and is not expanded in detail.

[0034] Compared with the prior art, the utility model has the following advantages:

[0035] The fluid static pressure sliding rail is provided with a split block fixed on the slider, the fluid channel is arranged on the split block, and the pressure accumulation groove is formed on the split block or between the split block and the slider, so that when the fluid channel or the pressure accumulation groove is blocked, only the corresponding split block needs to be disassembled, repaired or replaced, and the cleaning of the pressure accumulation groove is facilitated, and the convenience and economy of the later maintenance are improved. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 It is the overall cross section schematic view (embodiment 1) provided by the utility model;

[0037] Figure 2 It is the structure schematic view of the slider (embodiment 1) provided by the utility model;

[0038] Figure 3 It is the cross section schematic view of the slider (embodiment 1) provided by the utility model;

[0039] Figure 4 It is the support rail cross section schematic view provided by the utility model;

[0040] Figure 5 It is the cross section schematic view of the top split body (embodiment 1) provided by the utility model;

[0041] Figure 6 It is the cross section schematic view of the side split body provided by the utility model;

[0042] Figure 7 It is the cross section schematic view of the top split body installed in the vertical sliding groove (embodiment 2) provided by the utility model;

[0043] Figure 8 It is the structure schematic view of the slider (embodiment 2) provided by the utility model.

[0044] Support rail 1, sliding block 2, T-shaped groove 21, sliding groove top surface 22, sliding groove side surface 23, sliding groove bottom surface 24, vertical sliding groove 25, horizontal sliding groove 26, inner step 27, vertical section 28, horizontal section 29, positioning groove 30, blind groove 31, sliding surface 32, split block 4, top split 41, side split 42, pressure accumulation groove 43, fluid passage 44, outer step 45, sealing ring assembly 46, positioning convex body 47, easy-to-enter chamfer 48, fixing lug 49, inner vertical surface 50 、 Active type throttler assembly 6. DETAILED DESCRIPTION

[0045] The following is a specific embodiment of the present application and further describes the technical solution of the present application in conjunction with the accompanying drawings, but the present application is not limited to these embodiments.

[0046] Embodiment 1

[0047] The specific embodiment is as follows Figures 1-6 As shown in the drawings, the fluid static pressure sliding rail of the present application comprises a support rail 1 and a sliding block 2 connected to the support rail 1, a plurality of pressure accumulation grooves 43 are provided on the sliding surface 32 of the sliding block 2, the pressure accumulation grooves 43 are connected to the pressurized fluid supply assembly through fluid passages 44, a split block 4 is detachably provided on the sliding block 2, the pressure accumulation grooves 43 are formed on the inner end surface of the split block 4, and the fluid passages 44 are arranged in the split block 4.

[0048] Specifically, the sliding rail of the present application is composed of a support rail 1 and a sliding block 2, and a pressure accumulation groove 43 is provided between the sliding block 2 and the support rail 1. The pressure accumulation groove 43 is input with medium oil fluid by the pressurized fluid supply assembly through the fluid passage 44, a film is formed between the fluid and the acting surface of the support rail 1, the frictional contact between the support rail 1 and the sliding block 2 is avoided, and the stable sliding precision is ensured. In addition, a split block 4 is fixedly provided on the sliding block 2, the fixing has flexible detachability, the fluid passage 44 is arranged on the split block 4, and the pressure accumulation groove 43 is formed on the split block 4. When the fluid passage 44 or the pressure accumulation groove 43 has problems such as blockage, only the corresponding split block 4 needs to be removed and repaired or replaced, which also facilitates the cleaning of the pressure accumulation groove 43 and improves the convenience and economy of later maintenance.

[0049] As Figures 1-4 shown, the cross section of the support rail 1 is in the shape of an I-beam, the sliding block 2 has a T-shaped groove 21 extending axially therethrough, and the pressure accumulation grooves 43 are formed on the sliding groove top surface 22, the sliding groove side surface 23 and the sliding groove bottom surface 24 of the T-shaped groove 21. The split block 4 comprises a top split 41 and a side split 42, the top split 41 is inserted and fixed in the vertical sliding groove 25 of the sliding block 2, and the side split 42 is inserted and fixed in the horizontal sliding groove 26 of the sliding block 2.

[0050] Specifically, the support rail 1 is linear, comprising a sliding installation strip at the upper part and a bottom support strip at the lower part, and being integrally connected by a connecting section. The sliding installation strip slides in the horizontal section 29 inside the T-shaped slot 21, and the connecting section slides in the vertical section 28 at the opening of the T-shaped slot 21. The top surface, bottom surface and side surface of the horizontal section 29 are provided with pressure accumulation grooves 43, achieving vertical support and horizontal center positioning, effectively avoiding frictional contact between the sliding block 2 and the support rail 1, and ensuring sliding precision. The top part 41 is vertically inserted into the sliding block 2 and is mainly used to form the pressure accumulation grooves 43 on the top surface of the sliding slot. The corresponding fluid channels 44 are formed in the top part 41. The side part 42 is horizontally inserted into the transverse sliding slot 26 of the sliding block 2 and is mainly used to form the pressure accumulation grooves 43 on the side surface and bottom surface of the sliding slot. The corresponding fluid channels 44 corresponding to each pressure accumulation groove 43 are provided in the side part 42.

[0051] As shown in Figure 1 , 3 , 5, the top part 41 and the vertical sliding slot 25 are rectangular and mutually adaptive. The vertical sliding slot 25 vertically extends through the top of the sliding block 2 and the lower end is in communication with the top surface of the T-shaped slot 21. The lower end surface of the top part 41 is formed with a pressure accumulation groove 43, and the lower end of the top part 41 is flush with the top surface of the sliding slot.

[0052] Specifically, the size of the top part 41 and the vertical sliding slot 25 are matched with each other. The recessed groove on the lower end surface of the top part 41 is the pressure accumulation groove 43. Two groups of pressure accumulation grooves 43 are distributed on the top surface of the sliding slot along the width direction. The pressure accumulation grooves 43 respectively apply fluid pressure to the left and right sides of the top surface of the support rail 1, ensuring stable sliding of the sliding block 2.

[0053] As shown in Figure 1 , 3 , 6, the side part 42 and the transverse sliding slot 26 are L-shaped and mutually adaptive. The transverse sliding slot 26 extends along the width direction of the sliding block 2 and is in communication with the side surface 23 and the bottom surface 24 of the sliding slot. The inner vertical surface 50 of the side part 42 is flush with the side surface 23 of the sliding slot, and the inner horizontal surface 51 of the side part 42 is flush with the bottom surface 24 of the sliding slot. The inner vertical surface 50 and the inner horizontal surface 51 are both formed with pressure accumulation grooves 43. The transverse sliding slot 26 comprises a vertical section 28 and a horizontal section 29. The vertical section 28 transversely penetrates the side of the sliding block 2 and is in communication with the side surface 23 of the sliding slot. The horizontal section 29 extends below the bottom surface 24 of the sliding slot and the top surface is flush with the bottom surface 24 of the sliding slot.

[0054] Specifically, the side part body 42 is L-shaped, inserted into the transverse sliding groove 26, with the horizontal section 29 extending below the sliding groove bottom surface 24, and the inner side surface of the vertical section 28 flush with the sliding groove side surface 23. The front end of the horizontal section 29 abuts against the inner side surface of the transverse sliding groove 26, with a positioning effect. The horizontal section 29 of the side part body 42 is flush with the sliding groove bottom surface 24, and the vertical section 28 is flush with the sliding groove side surface 23. An upwardly open pressure storage groove 43 is formed on the inner horizontal surface 51 at the top of the horizontal section 29, and an inwardly open pressure storage groove 43 is formed on the inner vertical surface 50 of the inner side of the vertical section 28.

[0055] As an optimization of the present embodiment, the front end of the side part body 42 is provided with a strip-shaped positioning protrusion 47, and a corresponding positioning groove 30 is provided on the inner side wall of the transverse sliding groove 26. The positioning protrusion 47 is inserted into the positioning groove 30, and the front end of the positioning protrusion 47 is provided with an easy-to-enter chamfer 48.

[0056] Specifically, the front end of the horizontal section 29 of the side part body 42 and the inner side surface of the transverse sliding groove 26 are positioned by the positioning protrusion 47 and the positioning groove 30, ensuring that the side part body 42 is installed in place, and also providing vertical support for the front end of the horizontal section 29 of the side part body 42, ensuring structural stability.

[0057] In the present embodiment, the fluid passage 44 is connected with an active throttler assembly 6, which is arranged on the split block 4. A pipe joint is arranged on the outer wall of the split block 4 and communicates with the fluid passage 44. The pipe joint is connected with a pressurized fluid supply assembly through a fluid pipe. The active throttler assembly 6 can detect the fluid pressure in the pressure storage groove 43 and adjust the fluid pressure to an appropriate range according to a set program. The pressurized fluid supply assembly is used to specifically input the fluid after pressurization to meet the pressure requirement of the corresponding pressure storage groove 43.

[0058] As an optimization, the outer end of the split block 4 is provided with a fixing lug 49, and a corresponding blind groove 31 is provided on the sliding block 2. The fixing lug 49 is fixed in the blind groove 31 by bolts. This fixing has flexible detachability and ensures the flatness of the overall structure.

[0059] Specific working principle: The sliding block 2 slides on the support rail 1. The pressurized fluid supply assembly inputs fluid into the pressure storage groove 43 through the fluid pipe, the fluid passage 44, and the active throttler assembly 6. The fluid simultaneously acts on the acting surface of the support rail 1, and the sliding block 2 slides on the support rail 1 in a suspended manner.

[0060] Embodiment 2

[0061] The specific working principle of the present embodiment is basically the same as that of Embodiment 1, except for the corresponding pressure storage groove 43 of the top part body 41.

[0062] Specific embodimentsFigure 7 、 8 As shown in FIG. 4, the lower end surface of the top part 41 is located inside the vertical sliding groove 25, and a pressure accumulation groove 43 is formed between the lower end surface and the lower end of the vertical sliding groove 25. An annular inner step 27 is arranged inside the vertical sliding groove 25, and an annular outer step 45 is arranged on the top part 41, the inner step 27 and the outer step 45 are in close contact, and a sealing ring assembly 46 is further arranged between the outer step 45 and the inner step 27.

[0063] Specifically, the pressure accumulation groove 43 of the top part is formed between the top part 41 and the sliding block 2, the top part 41 is vertically inserted into the vertical sliding groove 25 until the outer step 45 thereof abuts against the inner step 27 of the vertical sliding groove 25, and the sealing ring assembly 46 between the inner step 27 and the outer step 45 effectively ensures the sealing property of the pressure accumulation groove 43, thereby avoiding fluid leakage from between the top part 41 and the vertical sliding groove 25.

[0064] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art to which the present application belongs can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

Claims

1. A novel hydrostatic slide rail, comprising a support rail (1) and a slider (2) slidably connected to the support rail (1), wherein a plurality of pressure accumulators (43) are provided on the sliding surface (32) of the slider (2), and the pressure accumulators (43) are connected to a pressurized fluid supply assembly through a fluid channel (44), characterized in that, The slider (2) is detachably provided with a split block (4), the pressure accumulator (43) is formed on the slider (2), or on the inner end face of the split block (4), or between the inner end of the split block (4) and the sliding surface (32), and the fluid channel (44) is arranged in the slider (2) and / or the split block (4).

2. The novel hydrostatic slide rail according to claim 1, characterized in that, The cross-section of the support track (1) is I-shaped, and the slider (2) has a T-shaped groove (21) extending axially through it. The sliding surface (32) includes the top surface (22), side surface (23), and bottom surface (24) of the T-shaped groove (21).

3. The novel hydrostatic slide rail according to claim 2, characterized in that, The split block (4) includes a top part (41) and / or a side part (42). The top part (41) is inserted into and fixed in the vertical groove (25) of the slider (2), and the side part (42) is inserted into and fixed in the horizontal groove (26) of the slider (2).

4. The novel hydrostatic slide rail according to claim 3, characterized in that, The top section (41) and the vertical slide (25) are rectangular and mutually adapted to each other. The vertical slide (25) extends vertically through the top of the slider (2) and its lower end is connected to the top surface of the T-shaped groove (21). A pressure accumulator groove (43) is formed in the lower end face of the top part (41), and the lower end of the top part (41) is flush with the top surface (22) of the chute. Alternatively, the lower end face of the top part (41) is located inside the vertical slide groove (25), and the pressure accumulator groove (43) is formed between the lower end face and the lower port of the vertical slide groove (25).

5. The novel hydrostatic slide rail according to claim 4, characterized in that, The vertical groove (25) is provided with an annular inner step (27), and the top part (41) is provided with an annular outer step (45). The inner step (27) and the outer step (45) are in close contact, and a sealing ring assembly (46) is provided between the outer step (45) and the inner step (27).

6. The novel hydrostatic slide rail according to claim 3, characterized in that, The side section (42) and the transverse slide (26) are L-shaped and adapt to each other. The transverse slide (26) extends along the width direction of the slider (2) and is connected to the side surface (23) and bottom surface (24) of the slide respectively.

7. The novel hydrostatic slide rail according to claim 6, characterized in that, The inner vertical surface (50) of the side part (42) is flush with the side surface (23) of the chute, and the inner horizontal surface (51) of the side part (42) is flush with the bottom surface (24) of the chute. Both the inner vertical surface (50) and the inner horizontal surface (51) have pressure accumulators (43). The transverse chute (26) includes a vertical section (28) and a horizontal section (29). The vertical section (28) extends transversely through the side of the slider (2) and communicates with the side of the chute (23). The horizontal section (29) extends to the bottom surface (24) of the chute and its top surface is flush with the bottom surface (24) of the chute.

8. The novel hydrostatic slide rail according to claim 3, characterized in that, The front end of the side section (42) is provided with a positioning protrusion (47) or a positioning groove (30), and the inner end side wall of the transverse slide (26) is provided with a corresponding positioning groove (30) or positioning protrusion (47), and the positioning protrusion (47) is inserted into the positioning groove (30). The positioning protrusion (47) has a triangular or rectangular cross-section. The front end of the rectangular positioning protrusion (47) is provided with an easy-entry chamfer (48). The shape of the positioning groove (30) is adapted to the positioning protrusion (47).

9. The novel hydrostatic slide rail according to any one of claims 1-8, characterized in that, The fluid channel (44) is connected to an active throttle assembly (6), which is disposed on the split block (4) or the slider (2). The outer wall of the split block (4) or the slider (2) is provided with a pipe joint that communicates with the fluid channel (44), and the pipe joint is connected to the pressurized fluid supply assembly through a fluid pipe.

10. The novel hydrostatic slide rail according to any one of claims 1-8, characterized in that, The outer end of the split block (4) is provided with a fixing ear (49), and the slider (2) is provided with a corresponding blind groove (31). The fixing ear (49) is fixed in the blind groove (31) through the blind groove (31).

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