CN211059201U - Gas-oil mixed static pressure guide rail slide carriage - Google Patents

Abstract

The utility model discloses a gas-oil mixture hydrostatic guideway carriage apron, include: with guide rail plane clearance fit's slide carriage body, set up this internal throttle pipeline of slide carriage, throttle pipeline includes an at least throttle oil pipe way and two piece at least throttle gas pipelines, throttle oil pipe way is located between two adjacent throttle gas pipelines, and still be equipped with between throttle oil pipe way and the throttle gas pipeline and separate the groove, all be equipped with a plurality of on throttle oil pipe way, the throttle gas pipeline and run through in the planar orifice in slide carriage body bottom. By the mode, the utility model can realize the mixed lubrication of air and oil in one slide carriage; meanwhile, the series connection of an oil film area and an air film area can be effectively blocked, so that the bearing capacity and the rigidity of the guide rail system are improved.

Description

An air-oil hybrid static pressure guide rail slide

technical field

The utility model relates to the technical field of static pressure guide rails, in particular to an air-oil mixed static pressure guide rail sliding plate.

Background technique

With the vigorous development of cutting-edge technologies such as my country's national defense industry, aerospace and electronic technology, the requirements for the accuracy of ultra-precision machining and ultra-precision measurement equipment are becoming more and more stringent. The development of ultra-precision machining and detection technology has become an important development direction of today's machinery industry.

In ultra-precision machining and testing equipment, extremely high requirements are placed on the high speed and high motion accuracy of moving parts. The hydrostatic air guide is a sliding guide that uses a pressure pump to force high-pressure air into the tiny gap between the slide and guide. Due to its small friction factor, long working life and uniform temperature distribution, it is widely used in ultra-precision machining and testing. in the motion system of the device.

Aerostatic guide rails are lubricated with air, but due to the compressible properties of gas, their bearing capacity and stiffness are low. The gas-liquid mixed lubrication method has become a feasible solution, and the sliding plate is an important part of the mixed lubrication guide rail, so the structure and function of the sliding plate also put forward new requirements.

Utility model content

The main technical problem solved by the utility model is to provide a gas-oil mixed static pressure guide rail slide, gas or oil can enter the gap between the guide rail and the slide through the pipeline in the slide to form a gas film/oil film, Lubricate the guide rail.

In order to solve the above-mentioned technical problems, a technical solution adopted by the present utility model is to provide a gas-oil hybrid static pressure guide rail slide, including: a slide body that is clearance-fitted with the guide rail plane, and a slide body provided in the slide body. A throttling pipeline, the throttling pipeline includes at least one throttling oil pipeline and at least two throttling gas pipelines, the throttling oil pipeline is located between two adjacent throttling gas pipelines, and the throttling pipeline is There is also a partition groove between the oil flow pipeline and the throttle gas pipeline. The throttle oil pipeline and the throttle gas pipeline are both provided with a number of first throttle holes and second throttle holes that penetrate through the bottom plane of the slide body. hole.

In a preferred embodiment of the present invention, the throttle gas pipeline is communicated with the same intake pipe, and the throttle gas pipeline and the intake pipe are vertically distributed to each other.

In a preferred embodiment of the present invention, there are two throttling gas pipelines, one throttling oil pipeline, the throttling oil pipeline is located in the middle of the slide body, and the throttling gas pipeline Symmetrically distributed on both sides of the throttle oil pipeline and parallel to the throttle oil pipeline.

In a preferred embodiment of the present invention, there are fifteen first orifices in total and fifteen second orifices in total, and five first orifices are evenly distributed on the throttle oil pipeline, each of which is Five second throttle holes are evenly distributed on the throttle gas pipeline.

In a preferred embodiment of the present utility model, an oil throttle is provided at the orifice of the first throttle hole on the throttle oil pipeline, and the hole of the second throttle hole on the throttle gas pipeline There is an air restrictor at the mouth.

In a preferred embodiment of the present invention, the diameter of the oil orifice on the oil restrictor is 0.3mm, and the diameter of the air orifice on the gas restrictor is 0.1mm.

In a preferred embodiment of the present invention, an oil and gas recovery pipeline is further included, and the oil and gas recovery pipeline is arranged above the blocking groove and is parallel to the throttle oil pipeline and the throttle gas pipeline.

In a preferred embodiment of the present invention, oil and gas return holes are evenly distributed on the oil and gas recovery pipeline.

In a preferred embodiment of the present invention, there are two oil and gas recovery pipelines, ten oil and gas return holes in total, and five oil and gas return holes are evenly distributed on each of the oil and gas recovery pipelines.

In a preferred embodiment of the present invention, the oil and gas recovery pipeline is connected to the oil reservoir through an external pipeline, and the external pipeline is provided with a vacuum pump and an oil-gas separator.

The beneficial effects of the utility model are: the utility model sets the throttle oil pipeline and the throttle gas pipeline in the sliding plate body, and sets the throttle hole on the pipeline, so that the oil film is simultaneously formed in the gap between the sliding plate and the guide rail. area and air film area, that is, air and oil mixed lubrication can be realized in one slide; at the same time, a partition groove is set between the throttling oil pipeline and the throttling gas pipeline, the pressure in the partition groove area is reduced, and it is difficult to form static pressure, which can effectively block The oil film area and the air film area are connected in series to ensure the stability of the rail system;

In addition, the utility model is also equipped with oil and gas recovery pipelines to suck out the dissipated oil and gas by a micro-vacuum method, avoiding setting an oil storage tank, and can form a vacuum preload between the guide rail and the slide plate, thereby improving the rigidity of the guide rail system.

Description of drawings

1 is a cross-sectional view of a gas-oil hybrid static pressure guide rail slide of the present invention;

Fig. 2 is a partial enlarged view of Fig. 1;

Fig. 3 is the A-A section sectional view shown in Fig. 1;

The symbols of the components in the drawings are as follows: 1. The slide body, 2. The throttle oil pipeline, 3. The throttle gas pipeline, 21, The first throttle hole, 31, The second throttle hole, 22, The oil film area, 32, air film area, 23, oil restrictor, 33, air restrictor, 4, partition groove, 5, intake pipe, 6, oil and gas recovery pipeline, 61, oil and gas return hole, 7, external pipeline, 8 oil storage device, 9, vacuum pump, 10, oil and gas separator.

Detailed ways

The preferred embodiments of the present utility model will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, so that the protection scope of the present utility model can be more clearly defined. .

Please refer to Figures 1 to 3, the utility model includes:

An air-oil hybrid static pressure guide rail slide, comprising: a slide body 1 that is clearance fit with the guide rail plane, a throttling pipeline opened in the slide body 1, and the throttling pipeline includes at least one A throttle oil pipeline 2 and at least two throttle gas pipelines 3, the throttle oil pipeline 2 is located between two adjacent throttle gas pipelines 3, and the throttle oil pipeline 2 and the throttle gas pipeline 3 are both A number of first orifice holes 21 and second orifice holes 31 are opened through the bottom plane of the slide body 1, and the lubricating oil film area 22, air film area 32;

As shown in FIG. 1 and FIG. 2 , a partition groove 4 is also provided between the throttle oil pipeline 2 and the throttle gas pipeline 3 , and the partition slot 4 is opened on the bottom plane of the slide body 1 . In the groove, the high pressure lubricating oil in the throttle oil pipeline 2 is output from the first throttle hole 21 at a certain pressure, and is dispersed to both sides with the first throttle hole 21 as the center to form an oil film area 22, in which the high pressure lubricating oil is dispersed When reaching the partition groove area, due to the increased contact area between the lubricating oil and the partition groove 4, the pressure of the lubricating oil in the partition groove area is reduced, and it is difficult to form a static pressure, so that an oil film cannot be formed in the partition groove area; similarly, the throttling gas pipeline The high-pressure air in 3 is output from the second orifice 31 at a certain pressure, and is dispersed to both sides with the second orifice 31 as the center to form an air film area 32. The contact area between the air and the isolation groove 4 increases, which reduces the air pressure in the isolation groove area, and it is difficult to form static pressure, so that an air film cannot be formed in the isolation groove area; therefore, in this embodiment, by setting the isolation groove 4 can effectively block The oil film area 22 and the air film area 32 are connected in series to ensure the running stability of the guide rail system.

Continuing to refer to FIG. 2 , in this embodiment, the throttle gas pipeline 3 communicates with the same intake pipe 5 , and the throttle gas pipeline 3 and the intake pipe 5 are distributed perpendicular to each other.

Specifically, there are two throttle gas pipelines 3 and one throttle oil pipeline 2 , the throttle oil pipeline 2 is located in the middle of the slide body 1 , and the throttle gas pipelines 3 are symmetrically distributed in the Both sides of the throttle oil pipeline 2 are parallel to the throttle oil pipeline 2 .

There are fifteen first throttle holes 21 and second throttle holes 31 in total, and five first throttle holes 21 are evenly distributed on the throttle oil pipeline 2 . There are also five second throttle holes 31 evenly distributed;

In addition, an oil throttle 23 is installed at the orifice of the first throttle hole 21 on the throttle oil pipeline 2 , and is located at the orifice of the second throttle hole 31 on the throttle gas pipeline 3 An air restrictor 33 is installed.

According to theoretical calculations, the parameters of the hydrostatic guideway are related to the characteristics of the lubricating fluid Fg, the fluid supply pressure Fp, and the orifice size factor Fd. Therefore, in this scheme, a unified throttle oil pipeline 2 and throttle gas pipeline are used. 3 diameter, equipped with replaceable oil restrictor 23 and air restrictor 33 to realize the static pressure lubrication layer, and finally realize the smooth running of the sliding plate by adjusting the air intake and oil pressure. In this embodiment, the diameter of the oil orifice on the oil restrictor 23 is 0.3 mm, and the diameter of the air orifice on the gas restrictor 33 is 0.1 mm.

Continuing to refer to FIGS. 1 and 2 , the gas-oil mixing hydrostatic guide rail slide also includes an oil and gas recovery pipeline 6 , which is arranged above the blocking groove 4 and is connected with the throttling. The oil pipeline 2 and the throttle gas pipeline 3 are parallel;

The oil and gas recovery line 6 is evenly provided with oil and gas return holes 61 , the oil and gas return holes 61 run through the partition groove 4 , and the dissipated oil and gas flows back to the oil and gas recovery line 6 through the oil and gas return holes 61 .

In this embodiment, there are two oil and gas recovery pipelines 6 , ten oil and gas return holes 61 in total, and five oil and gas return holes 61 are evenly distributed on each of the oil and gas recovery pipelines 6 .

The oil-gas recovery pipe 6 is connected to the oil reservoir 8 through an external pipe 7 , and a vacuum pump 9 and an oil-gas separator 10 are installed on the external pipe 7 . A vacuum pump 9 is installed on the external pipeline 7 connected with the oil and gas recovery pipeline 6. On the one hand, the vacuum pump 9 can generate a vacuum of about 1 mba to suck out and recover the oil and gas, and carry out oil and gas separation through the oil and gas separator 10, and recover the oil to the oil storage 8 On the other hand, the vacuum pump 9 is used to evacuate between the slide body 1 and the plane of the guide rail, and a vacuum preload can be formed between the guide rail and the slide body 1, thereby improving the rigidity of the guide rail system.

To sum up, the utility model can realize the mixed lubrication of gas and oil in one sliding plate; meanwhile, a partition groove is arranged between the throttle oil pipeline and the throttle gas pipeline, the pressure in the partition groove area is reduced, and it is difficult to form static pressure, which can be Effectively block the series connection between the oil film area and the gas film area;

In addition, the utility model is also equipped with oil and gas recovery pipelines to suck out the dissipated oil and gas by a micro-vacuum method, avoiding setting an oil storage tank, and can form a vacuum preload between the guide rail and the slide plate, thereby improving the rigidity of the guide rail system.

In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. The orientation or positional relationship, or the orientation or positional relationship that the utility model product is usually placed in use, is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific Orientation, construction and operation in a particular orientation, and therefore should not be construed as a limitation of the present invention. The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. For those skilled in the art, the present utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

The above descriptions are only the embodiments of the present invention, and are not intended to limit the scope of the patent of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied to other Relevant technical fields are similarly included in the scope of patent protection of the present invention.

Claims (10)

1. An air-oil hybrid static pressure guide rail slide, comprising: a slide body (1) that is clearance-fitted with the guide rail plane, and a throttling pipeline opened in the slide body (1), characterized in that, The throttling pipeline includes at least one throttling oil pipeline (2) and at least two throttling gas pipelines (3), and the throttling oil pipeline (2) is located in two adjacent throttling gas pipelines (3) between the throttle oil pipeline (2) and the throttle gas pipeline (3), a partition groove (4) is also provided, and the throttle oil pipeline (2) and the throttle gas pipeline (3) are Each is provided with a plurality of first throttle holes (21) and second throttle holes (31) penetrating the bottom plane of the slide body (1). 2. The air-oil mixed static pressure guide rail slide according to claim 1, characterized in that, the throttle gas pipeline (3) is communicated with the same intake pipe (5), and the throttle gas pipeline ( 3) Distributed perpendicular to the air intake pipe (5). 3. The gas-oil mixed static pressure guide rail slide according to claim 2, characterized in that, there are two throttling gas pipelines (3), one throttling oil pipeline (2), and the The throttle oil pipeline (2) is located in the middle of the slide body (1), and the throttle gas pipeline (3) is symmetrically distributed on both sides of the throttle oil pipeline (2) and is connected with the throttle oil pipeline (2). ) are parallel. 4. The air-oil hybrid static pressure guide rail slide according to claim 3, characterized in that, there are fifteen first throttle holes (21) and second throttle holes (31) in total, and the Five first throttle holes (21) are uniformly distributed on the oil flow pipeline (2), and five second throttle holes (31) are uniformly distributed on each of the throttle gas pipelines (3). 5 . The air-oil hybrid static pressure guide rail slide according to claim 4 , wherein the orifice of the first throttle hole ( 21 ) on the throttle oil pipeline ( 2 ) is provided with oil The throttle (23) is provided with a gas throttle (33) at the orifice of the second throttle hole (31) on the throttle gas pipeline (3). 6. The air-oil mixed static pressure guide rail slide according to claim 5, characterized in that, the diameter of the oil orifice on the oil restrictor (23) is 0.3 mm, and the air restrictor (23) has a diameter of 0.3 mm. 33) The diameter of the gas orifice is 0.1mm. 7. The gas-oil hybrid static pressure guide rail slide according to any one of claims 1 to 6, characterized in that it further comprises an oil and gas recovery pipeline (6), and the oil and gas recovery pipeline (6) is arranged in the Above the blocking groove (4), and parallel to the throttle oil pipeline (2) and the throttle gas pipeline (3). 8 . The gas-oil mixed static pressure guide rail slide according to claim 7 , wherein the oil and gas recovery pipeline ( 6 ) is evenly provided with oil and gas return holes ( 61 ). 9 . 9. The gas-oil hybrid static pressure guide rail slide according to claim 8, characterized in that, there are two said oil and gas recovery pipelines (6), and a total of ten said oil and gas return holes (61), each of which is Five oil and gas return holes (61) are evenly distributed on the oil and gas recovery pipeline (6). 10. The gas-oil mixing hydrostatic guide rail slide according to claim 8, characterized in that, the oil and gas recovery pipeline (6) is connected to the oil reservoir (8) through an external pipeline (7), and the The external pipeline (7) is provided with a vacuum pump (9) and an oil-gas separator (10).

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