Hydrostatic guide rail moving device for grinding machine

Abstract

The invention discloses a hydrostatic guideway moving device for a grinding machine, which comprises a base on which a guideway is mounted; the side, close to the base, of the sliding table is provided with a static pressure sliding block in sliding fit with the guide rail, the guide rail is provided with a sliding groove extending in the length direction of the static pressure sliding block, the static pressure sliding block is embedded in the sliding groove in a sliding mode, and the static pressure sliding block is provided with pressure oil grooves in the height direction and the width direction, the connecting assembly is used for detachably connecting the sliding table and the static pressure sliding block, and the connecting assembly is arranged above the static pressure sliding block; the oil conveying assembly is used for conveying pressure oil into the pressure oil groove, the oil conveying assembly comprises a plurality of throttlers and a valve seat used for conveying the pressure oil to the throttlers, the throttlers are connected to the valve seat, a plurality of receding holes allowing the throttlers to penetrate through are formed in the connecting assembly, and the valve seat is detachably connected to the connecting assembly. The device has the advantages of being simple in structure and convenient to assemble.

Description

Technical Field

[0001] The invention relates to the technical field of hydrostatic guide rails, in particular to a hydrostatic guide rail moving device for a grinding machine. Background Art

[0002] At present, hydrostatic guides are often used in transmission and positioning systems in precision grinders. Hydrostatic guides are a type of guide structure that allows oil at a certain pressure to pass between two relatively moving guide surfaces to form a load-bearing oil film, thereby supporting the moving parts. The two relatively moving guide surfaces of the hydrostatic guide do not contact each other, and there is a load-bearing oil film between the two. In this way, the guide surfaces are in a pure liquid friction state, which can change sliding friction into liquid friction, greatly reducing the friction coefficient, and the oil film has good vibration resistance. Such advantages make the hydrostatic guide have good stability and are suitable for precision control.

[0003] However, the existing transmission and positioning system design of the hydrostatic guide rail is very complex and unreasonable, resulting in difficulties in processing and assembly, which is not conducive to mass production in industry. Summary of the invention

[0004] The object of the present invention is to provide a hydrostatic guide rail moving device for a grinding machine, which has a simple structure and is easy to assemble.

[0005] The present invention is achieved through the following technical solutions.

[0006] A hydrostatic guide rail moving device for a grinding machine, comprising: A base, wherein a guide rail is installed on the base; The slide table has a hydrostatic slider slidably matched with the guide rail on one side close to the base, the guide rail has a slide groove extending along the length direction of the hydrostatic slider, the hydrostatic slider is slidably embedded in the slide groove, and the hydrostatic slider is provided with a pressure oil groove in both the height direction and the width direction for forming a hydrostatic support with the guide rail; A connecting assembly, used for detachably connecting the slide table and the static pressure slider, wherein the connecting assembly is arranged above the static pressure slider; An oil delivery assembly is used to deliver pressure oil to the pressure oil tank. The oil delivery assembly includes multiple throttles and a valve seat for delivering pressure oil to the multiple throttles. The multiple throttles are connected to the valve seat. The connecting assembly is provided with multiple avoidance holes that allow the multiple throttles to pass through. The valve seat is detachably connected to the connecting assembly.

[0007] As a further improvement of the present invention, the valve seat includes a transmission channel located inside the valve seat and a plurality of mounting holes connected to the transmission channel, the mounting holes are used to install the throttle, and the transmission channel forms a delivery port on the valve seat.

[0008] As a further improvement of the present invention, the guide rail includes a base plate and two side plates perpendicular to the base plate, and the bottom surface and two side surfaces in the width direction of the hydrostatic slider are provided with a plurality of pressure oil grooves, and the plurality of pressure oil grooves are arranged at intervals along the length direction of the hydrostatic slider, and the top surface of the hydrostatic slider is in contact with the lower surface of the connecting assembly.

[0009] As a further improvement of the present invention, the top surface of the static pressure slider is recessed inward to form a static pressure surface relatively parallel to the bottom surface of the static pressure slider, and the pressure oil groove is provided on the static pressure surface. The guide rail also includes a top plate relatively parallel to the bottom plate, and the top plate is detachably connected to the side plate close to the static pressure surface.

[0010] As a further improvement of the present invention, an oil inlet hole and an oil outlet hole are provided on the static pressure slider, the oil inlet hole is connected to the oil delivery component, and the oil outlet hole is arranged on the bottom wall of the corresponding pressure oil groove, the oil inlet hole includes a first oil inlet hole, a second oil inlet hole and a third oil inlet hole, and the oil outlet hole includes a first oil outlet hole, a second oil outlet hole, a third oil outlet hole and a fourth oil outlet hole, the first oil outlet hole and the second oil outlet hole are respectively arranged on the two side surfaces of the static pressure slider along the width direction, the third oil outlet hole is arranged on the bottom surface of the static pressure slider, and the fourth oil outlet hole is arranged on the static pressure surface, the first oil inlet hole connects the first oil outlet hole and the second oil outlet, the second oil inlet hole connects the third oil outlet hole, and the third oil inlet hole connects the fourth oil outlet hole.

[0011] As a further improvement of the present invention, an inwardly recessed oil collecting groove is formed on the side of the base facing the slide, the guide rail is arranged in the oil collecting groove and is spaced apart from the bottom wall of the oil collecting groove in the height direction, and a through hole for connecting to the oil collecting groove is provided on the guide rail, and the through hole is used to transport the pressure oil in the guide rail to the oil collecting groove.

[0012] As a further improvement of the present invention, the bottom of the oil collecting tank is provided with an oil collecting hole for collecting the pressure oil in the oil collecting tank.

[0013] As a further improvement of the present invention, it also includes a driving mechanism for driving the slide to slide on the base, the driving mechanism includes a driving motor and a ball screw connected to the driving motor, the ball screw is connected to the slide through a nut sleeve, and the driving motor is arranged on the base. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings to help understand the purpose and advantages of the present invention, wherein: Figure 1 It is a structural schematic diagram of a hydrostatic guide rail moving device for a grinding machine according to the present invention; Figure 2 is a schematic diagram of the structure of the base; Figure 3 It is a structural schematic diagram of the slide; Figure 4 It is a structural schematic diagram of the valve seat; Figure 5 It is a structural schematic diagram of a static pressure slider; Figure 6 A cross-sectional view showing that the first oil inlet hole is connected to the first oil outlet hole and the second oil outlet hole; Figure 7 is a cross-sectional view showing that the second oil inlet hole is connected to the third oil outlet hole; Figure 8 It is a cross-sectional view showing that the third oil inlet hole is connected to the fourth oil outlet hole. DETAILED DESCRIPTION

[0015] The present invention is further described in detail below based on the accompanying drawings and implementation examples.

[0016] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. The words "inside" and "outside" refer to the direction toward or away from the geometric center of a specific component, respectively. They are relative concepts, and therefore may change accordingly according to different locations and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0017] This embodiment provides a static pressure guide rail moving device for a grinding machine, which is applied to the grinding machine, referring to Figures 1 to 8, including a base 1 and a slide 3, wherein a guide rail 2 is installed on the base 1, and a hydrostatic slider 4 slidably matched with the guide rail 2 is provided on the side of the slide 3 close to the base 1, and the guide rail 2 has a slide groove extending along the length direction of the hydrostatic slider 4, and the hydrostatic slider 4 is slidably embedded in the slide groove, and the hydrostatic slider 4 is provided with a pressure oil groove 41 in the height direction and the width direction, and the pressure oil groove 41 is used to accommodate pressure oil, and the slide 3 and the hydrostatic slider 4 are detachably connected through a connecting component 6, and the connecting component 6 is arranged above the hydrostatic slider 4, and an oil delivery component is detachably connected to the connecting component 6, and the oil delivery component is used to deliver pressure oil to the pressure oil groove 41, and the oil delivery component The assembly includes a plurality of throttles 52 and a valve seat 51 for conveying pressure oil to the plurality of throttles 52, and the plurality of throttles 52 are connected to the valve seat 51, and the connection assembly 6 is provided with a plurality of avoidance holes 61 that allow the plurality of throttles 52 to pass through, and the valve seat 51 is detachably connected to the outside of the connection assembly 6, and the valve seat 51 is connected to an external oil delivery device, so that when installing the plurality of throttles 52, the plurality of throttles 52 can be pre-installed on the valve seat 51, so that the plurality of throttles 52 and the valve seat 51 form a whole, and then the valve seat 51 is installed on the connection assembly 6, which simplifies the installation process of the throttles 52. At the same time, the static pressure slider 4 is connected to the guide rail 2 in a sliding embedded manner, so that the disassembly and assembly between the static pressure slider 4 and the guide rail 2 is relatively simple, and the difficulty of disassembly and assembly between the static pressure slider 4 and the guide rail 2 is simplified, which is convenient for industrial production.

[0018] In this embodiment, the valve seat 51 includes a transmission channel 511 located inside the valve seat 51 and a plurality of mounting holes 512 connected to the transmission channel 511, the mounting holes 512 are used to install the throttle 52, and the transmission channel 511 is formed with a delivery port on the valve seat 51, the delivery hole is connected to an external oil delivery device, and the pressure oil can be input into the transmission channel 511 through the delivery port and then delivered to the throttle 52.

[0019] In this embodiment, the guide rail 2 includes a bottom plate 21 and two side plates 22 perpendicular to the bottom plate 21. The top of the guide rail 2 is open. The bottom surface of the hydrostatic slider 4 and the two opposite side surfaces along the width direction are provided with a plurality of pressure oil grooves 41. The plurality of pressure oil grooves 41 are arranged at intervals along the length direction of the hydrostatic slider 4. When assembling the hydrostatic slider 4 and the guide rail 2, the hydrostatic slider 4 can be moved out from the top opening of the guide rail 2, which is convenient to operate.

[0020] In this embodiment, when the hydrostatic slider 4 moves on the guide rail 2 , it is only necessary to fill the pressure oil groove 41 with pressure oil, and the guide rail 2 and the hydrostatic slider 4 can be separated by the pressure oil, so that the hydrostatic slider 4 moves along the guide rail 2 .

[0021] In this embodiment, the connecting component 6 is a long strip structure extending along the length direction of the hydrostatic slider 4, and is connected to the hydrostatic slider 4 by bolts. When the connecting component 6 is fixed to the hydrostatic slider 4, the top surface of the hydrostatic slider 4 fits with the bottom surface of the connecting component 6, so that there is a sufficiently large contact area between the connecting component 6 and the hydrostatic slider 4, which helps to improve the connection stability between the connecting component 6 and the hydrostatic slider 4 and realize stable support of the slide 3 by the hydrostatic slider 4.

[0022] In this embodiment, in order to improve the stability of the static pressure slider 4 sliding on the guide rail 2, the top surface of the static pressure slider 4 is recessed inward to form a static pressure surface 42 which is relatively parallel to the bottom surface of the static pressure slider 4, and a pressure oil groove 41 is provided on the static pressure surface 42. The guide rail 2 also includes a top plate 23 which is relatively parallel to the bottom plate 21, and the top plate 23 is detachably connected to the side plate 22 close to the static pressure surface 42. That is, when the pressure oil groove 41 on the static pressure surface 42 is full of pressure oil, the static pressure slider 4 realizes static pressure support with the top plate 23. Since the static pressure surface 42 is relatively parallel to the bottom surface of the static pressure slider 4, the static pressure slider 4 can evenly distribute the load to the bottom surface of the static pressure slider 4 and the static pressure surface 42 when it is borne in the height direction, which helps to improve the load-bearing capacity and stability of the static pressure slider 4.

[0023] In this embodiment, refer to Figures 5 to 8 The static pressure slider 4 is provided with an oil inlet hole and an oil outlet hole, the oil inlet hole includes a first oil inlet hole 431, a second oil inlet hole 432 and a third oil inlet hole 433, the first oil inlet hole 431, the second oil inlet hole 432 and the third oil inlet hole 433 are respectively connected with a throttle 52, and the oil inlet hole and the corresponding throttle 52 can be connected through a pipeline, and the oil outlet hole includes a first oil outlet hole 441, a second oil outlet hole 442, a third oil outlet hole 443 and a fourth oil outlet hole 444, and the first oil outlet hole 441 and the second oil outlet hole 442 are respectively provided at the static pressure slider 4 along the width direction On both sides of the hydrostatic slider 4, the third oil outlet hole 443 is provided on the bottom surface of the hydrostatic slider 4, the fourth oil outlet hole 444 is provided on the hydrostatic surface 42, the first oil inlet hole 431 is connected to the first oil outlet hole 441 and the second oil outlet hole 442, the second oil inlet hole 432 is connected to the third oil outlet hole 443, the third oil inlet hole 433 is connected to the first oil outlet hole 441, and the oil outlet holes are provided on the bottom wall of the corresponding pressure oil groove 41, that is, the corresponding positions of the first oil outlet hole 441, the second oil outlet hole 442, the third oil outlet hole 443 and the fourth oil outlet hole 444 are all provided with pressure oil grooves 41. It can be understood that the pressure oil flows into the pressure oil groove 41 from the oil outlet hole, and then flows into the hydrostatic slider 4 and the guide rail 2 from the pressure oil groove 41, and the pressure oil can fill the pressure oil groove 41 under the action of pressure, so that the pressure oil in the pressure oil groove 41 has a larger contact area with the guide rail 2, thereby increasing the stability of the hydrostatic slider 4 sliding on the guide rail 2.

[0024] It should be noted that the pressure oil groove 41 in this embodiment can be formed by an inward depression on the surface of the static pressure slider 4, or a raised annular hollow oil sealing edge can be set on the surface of the static pressure slider 4, thereby forming the pressure oil groove 41 on the surface of the static pressure slider 4.

[0025] In this embodiment, when the hydrostatic slider 4 slides on the guide rail 2, the pressure oil in the pressure oil groove 41 will be squeezed into the guide rail 2. Therefore, it is necessary to continuously inject pressure oil from the oil inlet hole to ensure the normal sliding of the hydrostatic slider 4 on the guide rail 2. In order to reduce the cost of use, it is necessary to return the pressure oil in the guide rail 2 for reuse. An inwardly recessed oil collecting groove 11 is formed on the side of the base 1 facing the slide 3. The guide rail 2 is arranged in the oil collecting groove 11 and is spaced apart from the bottom wall of the oil collecting groove 11 in the height direction. An oil outlet hole for connecting to the oil collecting groove 11 is provided on the guide rail 2. The oil outlet hole is formed on the bottom plate 21. The oil outlet hole vertically penetrates the bottom plate 21 and is used to transport the pressure oil in the guide rail 2 to the oil collecting groove 11. Specifically, there are multiple oil outlet holes, which are formed on the bottom plate 21 and vertically penetrate the bottom plate 21 . At the same time, since the bottom plate 21 is higher than the bottom of the oil collecting tank 11 , the pressure oil in the guide rail 2 can flow smoothly into the oil collecting tank 11 .

[0026] In this embodiment, an oil collecting hole 12 is provided on the bottom of the oil collecting tank 11 for collecting the pressurized oil in the oil collecting tank 11 . The oil collecting hole 12 is arranged in the middle area of ​​the oil collecting tank 11 , and the pressurized oil in the oil collecting tank 11 is recovered through the oil collecting hole 12 .

[0027] By recycling the pressure oil, the pressure oil flowing out of the pressure oil tank 41 is recovered and reused to achieve oil circulation. On the one hand, the use of pressure oil is reduced and the daily use cost is reduced. On the other hand, the residual pressure oil on the guide rail 2 is reduced, making the guide rail 2 more beautiful.

[0028] In this embodiment, when processing the oil channel between the oil inlet and the oil outlet, since the oil channel is not necessarily arranged in a completely straight line, but may be composed of multiple line segments, directly processing the oil channel from the inside is not only costly but also difficult to process. Therefore, during processing, in order to facilitate the processing and forming of the oil channel, some processing holes will be set on the outer surface of the static pressure slider 4 to facilitate the processing of the oil channel. When the oil channel is processed, it only needs to be blocked with a plug or other blocking material.

[0029] In this embodiment, the moving device also includes a driving mechanism 7 for driving the slide 3 to move repeatedly on the base 1. The driving mechanism 7 includes a driving motor 71 and a ball screw 72 connected to the driver. The ball screw 72 is connected to the slide 3 through a nut sleeve. The driving motor 71 is arranged on the base 1. When working, the driving motor 71 drives the ball screw 72 to rotate, and the rotation of the ball screw 72 drives the slide 3 to move linearly along the guide rail 2.

[0030] Finally, it should be noted that the above implementation cases are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned implementation cases, those skilled in the art should understand that they can still modify the technical solutions recorded in the aforementioned implementation cases, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the implementation cases of the present invention.

Claims

1. A hydrostatic guide rail moving device for a grinding machine, characterized in that: include: A base (1), wherein a guide rail (2) is mounted on the base (1); The slide table (3) is provided with a static pressure slider (4) slidably matched with the guide rail (2) on one side close to the base (1); the guide rail (2) has a slide groove extending along the length direction of the static pressure slider (4); the static pressure slider (4) is slidably embedded in the slide groove; and the static pressure slider (4) is provided with a pressure oil groove (41) in both the height direction and the width direction for forming a static pressure support between the static pressure slider and the guide rail (2); A connecting component (6) used for detachably connecting the slide table (3) and the static pressure slider (4), wherein the connecting component (6) is arranged above the static pressure slider (4); An oil delivery assembly is used to deliver pressure oil to the pressure oil tank (41), the oil delivery assembly comprising a plurality of throttles (52) and a valve seat (51) for delivering pressure oil to the plurality of throttles (52), the plurality of throttles (52) being connected to the valve seat (51), the connection assembly (6) being provided with a plurality of avoidance holes (61) for allowing the plurality of throttles (52) to pass through, and the valve seat (51) being detachably connected to the connection assembly (6).

2. The hydrostatic guide rail moving device for a grinding machine according to claim 1, characterized in that: The valve seat (51) comprises a transmission channel (511) located inside the valve seat (51) and a plurality of mounting holes (512) connected to the transmission channel (511), wherein the mounting holes (512) are used to mount the throttle (52), and the transmission channel (511) is provided with a delivery port on the valve seat (51).

3. The hydrostatic guide rail moving device for a grinding machine according to claim 1, characterized in that: The guide rail (2) comprises a bottom plate (21) and two side plates (22) perpendicular to the bottom plate (21); the bottom surface and two side surfaces in the width direction of the static pressure slider (4) are provided with a plurality of pressure oil grooves (41); the plurality of pressure oil grooves (41) are arranged at intervals along the length direction of the static pressure slider (4); and the top surface of the static pressure slider (4) is in contact with the bottom surface of the connecting component (6).

4. The hydrostatic guide rail moving device for a grinding machine according to claim 3, characterized in that: The top surface of the static pressure slider (4) is recessed inward to form a static pressure surface (42) relatively parallel to the bottom surface of the static pressure slider (4), and the static pressure surface (42) is provided with the pressure oil groove (41). The guide rail (2) also includes a top plate (23) relatively parallel to the bottom plate (21), and the top plate (23) is detachably connected to the side plate (22) close to the static pressure surface (42).

5. The hydrostatic guide rail moving device for a grinding machine according to claim 4, characterized in that: The static pressure slider (4) is provided with an oil inlet hole and an oil outlet hole, the oil inlet hole is connected to the oil delivery assembly, the oil outlet hole is provided on the bottom wall of the corresponding pressure oil groove (41), the oil inlet hole comprises a first oil inlet hole (431), a second oil inlet hole (432) and a third oil inlet hole (433), the oil outlet hole comprises a first oil outlet hole (441), a second oil outlet hole (442), a third oil outlet hole (443) and a fourth oil outlet hole (444), the first oil outlet hole (441) and the second oil outlet hole (44 2) are respectively arranged on both side surfaces of the static pressure slider (4) along the width direction, the third oil outlet hole (443) is arranged on the bottom surface of the static pressure slider (4), the fourth oil outlet hole (444) is arranged on the static pressure surface (42), the first oil inlet hole (431) is connected to the first oil outlet hole (441) and the second oil outlet hole (442), the second oil inlet hole (432) is connected to the third oil outlet hole (443), and the third oil inlet hole (433) is connected to the fourth oil outlet hole (444).

6. The hydrostatic guide rail moving device for a grinding machine according to claim 1, characterized in that: An inwardly recessed oil collecting groove (11) is formed on one side of the base (1) facing the slide (3); the guide rail (2) is arranged in the oil collecting groove (11) and is spaced apart from the bottom wall of the oil collecting groove (11) in the height direction; a through hole (24) for communicating with the oil collecting groove (11) is provided on the guide rail (2); the through hole (24) is used to transport the pressure oil in the guide rail (2) to the oil collecting groove (11).

7. The hydrostatic guide rail moving device for a grinding machine according to claim 6, characterized in that: The bottom of the oil collecting groove (11) is provided with an oil collecting hole (12) for collecting the pressure oil in the oil collecting groove (11).

8. A hydrostatic guide rail moving device for a grinding machine according to any one of claims 1 to 7, characterized in that: It also includes a driving mechanism (7) for driving the slide (3) to slide on the base (1), the driving mechanism (7) including a driving motor (71) and a ball screw (72) connected to the driving motor (71), the ball screw (72) being connected to the slide (3) via a nut sleeve, and the driving motor (71) being arranged on the base (1).

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