CN211059200U - Air-oil mixed static pressure guide rail - Google Patents
Air-oil mixed static pressure guide rail Download PDFInfo
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- CN211059200U CN211059200U CN201922027453.4U CN201922027453U CN211059200U CN 211059200 U CN211059200 U CN 211059200U CN 201922027453 U CN201922027453 U CN 201922027453U CN 211059200 U CN211059200 U CN 211059200U
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- air
- carriage
- oil
- slide carriage
- guide rail
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- 230000003068 static effect Effects 0.000 title claims abstract description 22
- 230000002706 hydrostatic effect Effects 0.000 claims abstract description 23
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 239000003921 oil Substances 0.000 abstract description 70
- 239000010720 hydraulic oil Substances 0.000 abstract description 6
- 238000005461 lubrication Methods 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 5
- 238000003754 machining Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000007123 defense Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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Abstract
The utility model discloses a gas-oil mixture hydrostatic guideway, include: the air film supporting device comprises a guide rail, an upper slide carriage, a side slide carriage and a lower slide carriage which are respectively in static press fit with the upper end face, the side face and the lower end face of the guide rail, wherein an air film support is formed between the upper end face of the guide rail and the upper slide carriage, an air film support is also formed between the lower end face of the guide rail and the lower slide carriage, and an oil film support is formed between the side face of the guide rail and the side slide carriage. Through the mode, the hydrostatic lubrication is added on the basis of the air static pressure, so that the bearing capacity and the rigidity of the guide rail can be improved, and the guide rail can obtain better motion performance so as to meet the use requirement in a high-precision and high-speed operation system; meanwhile, the upper air film and the lower air film form air seal mutually, so that hydraulic oil is prevented from dissipating to pollute the guide rail or the external environment.
Description
Technical Field
The utility model relates to a hydrostatic guideway technical field especially relates to a gas-oil mixture hydrostatic guideway.
Background
With the rapid development of leading-edge technologies such as national defense industry, aerospace and aviation, electronic technology and the like, the requirements on the precision of ultra-precision machining and ultra-precision measuring equipment are more and more strict. The development of ultra-precision machining and detection technology has become an important development direction in the current mechanical industry.
In ultra-precision machining and inspection equipment, extremely high requirements are placed on high speed and high motion accuracy of moving parts. The air hydrostatic guideway is a sliding guideway which forcibly pumps high-pressure air into a small gap between a slide carriage and a guideway by using a pressure pump, and is widely applied to a motion system of ultra-precision machining and detection equipment due to small friction factor, long service life and uniform temperature distribution.
The aerostatic guideway is lubricated by air, but the load-bearing capacity and rigidity are low due to the compressible property of air.
In addition, the hydrostatic guideway adopts oil as a lubricating medium, has the characteristics of large bearing capacity and good rigidity, but is not suitable for high-speed scenes due to large viscous resistance.
In view of this, a new hydrostatic guideway needs to be developed to solve the problems of poor bearing capacity and low rigidity of the aerostatic guideway.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the main technical problem who solves provides a gas-oil mixing hydrostatic guideway, can promote the whole bearing capacity of guide rail system and rigidity to can obtain better motion performance, use in satisfying high accuracy, high speed operation system.
In order to solve the technical problem, the utility model discloses a technical scheme be: provided is an air-oil hybrid hydrostatic guideway including: the air film supporting device comprises a guide rail, an upper slide carriage, a side slide carriage and a lower slide carriage which are respectively in static press fit with the upper end face, the side face and the lower end face of the guide rail, wherein an air film support is formed between the upper end face of the guide rail and the upper slide carriage, an air film support is also formed between the lower end face of the guide rail and the lower slide carriage, and an oil film support is formed between the side face of the guide rail and the side slide carriage.
In a preferred embodiment of the present invention, the upper slide carriage is provided with an upper slide carriage inlet channel and at least one upper slide carriage throttle channel communicated with the upper slide carriage inlet channel, and the upper slide carriage throttle channel is provided with an upper slide carriage air throttle hole penetrating to the lower end surface of the upper slide carriage.
In a preferred embodiment of the present invention, five throttle air passages of the upper chute are uniformly distributed in the longitudinal plane of the upper chute and arranged in parallel with each other; and four upper slide carriage air throttling holes are formed in each upper slide carriage air throttling channel.
In a preferred embodiment of the present invention, the lower carriage has two blocks with the same structure, and the two blocks are symmetrically distributed along the center of the guide rail, the lower carriage has an air inlet channel and at least one lower carriage throttle channel communicated with the air inlet channel, and the lower carriage throttle channel has a lower carriage throttle hole penetrating through the upper end surface of the lower carriage.
In a preferred embodiment of the present invention, five throttle air passages of the lower chute plate are uniformly distributed in the longitudinal plane of the lower chute plate and arranged in parallel with each other; and each lower slide plate throttling air channel is provided with one lower slide plate air throttling hole.
In a preferred embodiment of the present invention, the side carriages have two same structures and are symmetrically distributed along the center of the guide rail, the side carriage oil inlet channel and at least one side carriage oil throttling channel communicated with the side carriage oil inlet channel are formed in the side carriages, and the side carriage oil throttling hole penetrating through the side carriage side wall is formed in the side carriage oil throttling channel.
In a preferred embodiment of the present invention, five side slide carriages are provided with throttling oil passages, which are uniformly distributed in the longitudinal surface of the side slide carriages and are arranged in parallel with each other; and each side slide carriage oil throttling channel is provided with two side slide carriage oil throttling holes.
In a preferred embodiment of the present invention, an oil collecting groove is further provided on the lower slide carriage, and a notch of the oil collecting groove is located right below a clearance between the side slide carriage and the guide rail side for static pressure fit.
In a preferred embodiment of the present invention, an oil return pipe is further disposed in the lower chute, and the oil return pipe is communicated with the oil collecting tank.
In a preferred embodiment of the present invention, the orifices of the air throttling holes of the upper slide carriage and the lower slide carriage are all provided with an air throttling device, the orifices of the oil throttling holes of the side slide carriage are all provided with an oil throttling device, the aperture of the air outlet hole of the air throttling device is 0.1mm, and the aperture of the oil outlet hole of the oil throttling device is 0.3 mm; and the static-pressure fit clearance between the upper end surface of the guide rail and the upper slide carriage and between the lower end surface of the guide rail and the lower slide carriage are 7-9 mu m, and the static-pressure fit clearance between the side surface of the guide rail and the side slide carriage is 15-18 mu m.
The utility model has the advantages that: the utility model adopts the structural design of combining the air static pressure and the liquid static pressure, the upper and the lower slide plates are matched with the guide rail by the air static pressure, so that an air film support is formed between the upper and the lower slide plates and the guide rail, and the side slide plate is matched with the guide rail by the liquid static pressure, so that an oil film support is formed between the side slide plate and the guide rail; the utility model adds the liquid static pressure lubrication on the basis of the air static pressure, can improve the bearing capacity and rigidity of the guide rail, and can lead the guide rail to obtain better motion performance so as to meet the use in a high-precision and high-speed operation system; meanwhile, the upper air film and the lower air film form air seal mutually, so that hydraulic oil is prevented from dissipating to pollute the guide rail or the external environment.
Drawings
Fig. 1 is a cross-sectional view of an air-oil hybrid hydrostatic guideway according to the present invention;
FIG. 2 is a sectional view taken along line A-A of FIG. 1;
FIG. 3 is an enlarged view of a portion of FIG. 1;
the parts in the drawings are numbered as follows: 1. a guide rail; 2. an upper slide carriage 21, an upper slide carriage air inlet channel 22, an upper slide carriage throttling air channel 221 and an upper slide carriage air throttling hole; 3. the oil inlet channel of the side slide carriage 31, the oil throttling channel of the side slide carriage 32, the throttling oil channel of the side slide carriage 321 and the throttling hole of the side slide carriage oil; 4. the oil return device comprises a lower slide carriage, 41, a lower slide carriage air inlet channel, 42, a lower slide carriage throttling air channel, 421, a lower slide carriage air throttling hole, 43, an oil collecting groove, 44 and an oil return pipeline; 5. air restrictor, 6, oil restrictor.
Detailed Description
The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.
Referring to fig. 1 to 3, the present invention includes:
an air-oil hybrid hydrostatic guideway comprising: the air film supporting device comprises a guide rail 1, an upper slide carriage 2, a side slide carriage 3 and a lower slide carriage 4 which are respectively in static press fit with the upper end face, the side face and the lower end face of the guide rail 1, wherein the guide rail 1 and the upper slide carriage 2 are in air static press fit, so that an air film support is formed between the upper end face of the guide rail 1 and the upper slide carriage 2, the guide rail and the lower slide carriage 4 are also in air static press fit, so that an air film support is also formed between the lower end face of the guide rail 1 and the lower slide carriage 4, and the guide rail 1 and the side slide carriage 3 are in liquid static press fit, so that an oil film support is formed between the side face of the guide rail.
Wherein, an upper slide carriage air inlet channel 21 and at least one upper slide carriage air throttling channel 22 communicated with the upper slide carriage air inlet channel 21 are arranged in the upper slide carriage 2, and an upper slide carriage air throttling hole 221 communicated to the lower end surface of the upper slide carriage 2 is arranged on the upper slide carriage air throttling channel 22;
the two lower slide carriages 4 are of the same structure and are symmetrically distributed along the center of the guide rail 1, a lower slide carriage air inlet channel 41 and at least one lower slide carriage throttling air channel 42 communicated with the lower slide carriage air inlet channel 41 are formed in each lower slide carriage 4, and a lower slide carriage air throttling hole 421 penetrating through the upper end face of each lower slide carriage 4 is formed in each lower slide carriage throttling air channel 42;
the side slide carriage 3 has two blocks with the same structure, and is distributed along the central symmetry of the guide rail 1, set up in the side slide carriage 3 side slide carriage oil feed passageway 31 and with at least one side slide carriage oil-throttling passageway 32 that side slide carriage oil feed passageway 31 link up mutually, set up on the side slide carriage oil-throttling passageway 32 and run through to the side slide carriage 3 lateral wall side slide carriage oil-throttling hole 321.
In this embodiment, five throttle air passages 22 of the upper slide carriage are uniformly distributed in the longitudinal surface of the upper slide carriage 2 and are arranged in parallel; each upper slide carriage air throttling channel 22 is provided with four upper slide carriage air throttling holes 221, namely the lower end surface of the upper slide carriage 2 is provided with 20 upper slide carriage air throttling holes 221 in total, so that 20 air supply points are realized, and the support of 20 air feet is formed;
five throttling air passages 42 of the lower slide carriage are uniformly distributed in the longitudinal surface of the lower slide carriage 4 and are arranged in parallel; each lower slide carriage throttling air channel 42 is provided with one lower slide carriage air throttling hole 421, that is, the upper end surfaces of the two lower slide carriages 4 are provided with 10 lower slide carriage air throttling holes 421, so that 10 air supply points are realized, and support of 10 air feet is formed;
in the embodiment, the connection pipe is connected according to a mode shown in a figure 2, air throttlers 5 are respectively arranged at the hole openings of the air throttling holes of the upper slide carriage and the lower slide carriage, the hole diameter of an air outlet on each air throttle 5 is 0.1mm, the air inlet pressure of the upper slide carriage and the air inlet pressure of the lower slide carriage are 4.5bar, the air static pressure fit gaps of the upper slide carriage and the lower slide carriage and the guide rail 1 are 7-9 mu m, and the thicknesses of the formed upper slide carriage and the formed lower slide carriage are 7-9 mu m.
Five side slide carriage throttling oil channels 32 are uniformly distributed in the longitudinal surface of the side slide carriage 3 and are arranged in parallel; each side slide carriage oil throttling channel 32 is provided with two side slide carriage oil throttling holes 321, namely the side wall of each side slide carriage 3 is provided with 10 side slide carriage oil throttling holes 321, so that 10 oil supply points on each side of the guide rail 1 are realized, and 10 oil film supporting points on each side are formed;
the oil film supporting points on each side are related in direction and mutually preloaded, and the oil film clearance and the oil film rigidity of the guide rail 1 can be adjusted by adjusting oil inlet pressure. In the embodiment, the pipe is connected according to the mode shown in fig. 2, the oil throttlers 6 are installed at the orifices of the oil throttles 321 of the side slide carriages, the aperture of air outlets on the oil throttlers 6 is 0.3mm, the oil inlets of the slide carriages 3 on two sides adopt the same oil source for oil feeding, the oil pressure is guaranteed to be consistent, the oil feeding pressure is 2Mpa, the liquid static pressure fit clearance between the side slide carriages and the guide rail 1 is 15-18 μm, and the thickness of a formed left oil film and a formed right oil film is 15-18 μm.
With continued reference to fig. 1 and 3, in this embodiment, an oil collecting groove 43 is further provided on the lower slide carriage 4, and a notch of the oil collecting groove 43 is located right below a clearance where the side slide carriage 3 is in static pressure fit with the side surface of the guide rail 1, and is used for collecting hydraulic oil escaping from the side slide carriage 3;
an oil return pipeline 44 is further formed in the lower slide carriage 4, the oil return pipeline 44 is communicated with the oil collecting groove 43, an oil return nozzle is further mounted at the pipe orifice of the oil return pipeline 44, and hydraulic oil in the oil collecting groove 43 is discharged through the oil return pipeline 44 and the oil return nozzle.
Meanwhile, as the structure of the guide rail of the present invention is characterized in that the upper and lower slide plates and the guide rail are lubricated by gas static pressure to form an upper and lower gas film support, the pressure of the gas film area can prevent the oil film from expanding, so that a gas seal is formed, and the hydraulic oil on the side slide plate 3 is prevented from dissipating to the upper surface of the guide rail 1 or dissipating to the lower slide plate 4.
To sum up, the utility model adds the hydrostatic lubrication on the basis of the air static pressure, can improve the bearing capacity and rigidity of the guide rail, and can lead the guide rail to obtain better motion performance so as to meet the use in a high-precision and high-speed operation system; meanwhile, the upper air film and the lower air film form air seal mutually, so that hydraulic oil is prevented from dissipating to pollute the guide rail or the external environment.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the products of the present invention are usually placed when used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element to which the term refers must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. An air-oil hybrid hydrostatic guideway comprising: the air film supporting device comprises a guide rail (1), an upper slide carriage (2), a side slide carriage (3) and a lower slide carriage (4) which are respectively in static press fit with the upper end face, the side face and the lower end face of the guide rail (1), and is characterized in that an air film support is formed between the upper end face of the guide rail (1) and the upper slide carriage (2), an air film support is also formed between the lower end face of the guide rail (1) and the lower slide carriage (4), and an oil film support is formed between the side face of the guide rail (1) and the side slide carriage (3).
2. The air-oil mixing hydrostatic guideway according to claim 1, characterized in that the upper carriage (2) has an upper carriage air inlet channel (21) and at least one upper carriage throttle air channel (22) communicating with the upper carriage air inlet channel (21), and the upper carriage throttle air channel (22) has an upper carriage air throttle hole (221) communicating with the lower end surface of the upper carriage (2).
3. The air-oil mixing hydrostatic guideway according to claim 2, characterized in that the upper carriage plate throttle air passages (22) have five, are uniformly distributed in the longitudinal plane of the upper carriage plate (2) and are arranged in parallel with each other; four upper slide carriage air throttling holes (221) are formed in each upper slide carriage air throttling channel (22).
4. The air-oil mixing hydrostatic guideway according to claim 1, characterized in that the lower carriage (4) has two identical structures, and is symmetrically distributed along the center of the guideway (1), the lower carriage (4) is provided with a lower carriage air inlet channel (41) and at least one lower carriage throttle air channel (42) communicated with the lower carriage air inlet channel (41), and the lower carriage throttle air channel (42) is provided with a lower carriage air throttle hole (421) communicated to the upper end surface of the lower carriage (4).
5. The air-oil hybrid hydrostatic guideway according to claim 4, characterized in that the lower carriage plate throttle air passages (42) have five, are uniformly distributed in the longitudinal plane of the lower carriage plate (4) and are arranged parallel to each other; each lower slide plate throttling air channel (42) is provided with one lower slide plate air throttling hole (421).
6. The air-oil mixing hydrostatic guideway according to claim 1, characterized in that the side carriages (3) have two blocks with the same structure, and are symmetrically distributed along the center of the guideway (1), the side carriages (3) are provided with side carriage oil inlet channels (31) and at least one side carriage oil throttling channel (32) communicated with the side carriage oil inlet channels (31), and the side carriage oil throttling channels (32) are provided with side carriage oil throttling holes (321) penetrating to the side walls of the side carriages (3).
7. The air-oil hydrostatic guideway according to claim 6, characterized in that five side carriage throttle oil passages (32) are uniformly distributed in the longitudinal plane of the side carriage (3) and arranged parallel to each other; each side slide carriage oil throttling channel (32) is provided with two side slide carriage oil throttling holes (321).
8. The air-oil hydrostatic guideway according to claim 4, characterized in that the lower carriage (4) is further provided with an oil collecting groove (43), and the notch of the oil collecting groove (43) is positioned right below the clearance of the side carriage (3) and the side of the guideway (1) in hydrostatic fit.
9. The air-oil mixing hydrostatic guideway according to claim 8, characterized in that an oil return pipeline (44) is further opened in the lower slide carriage (4), and the oil return pipeline (44) is communicated with the oil collecting groove (43).
10. The air-oil mixing hydrostatic guideway of claim 1, characterized in that the orifices of the air throttle holes on the upper slide carriage (2) and the lower slide carriage (4) are provided with air throttlers (5), the orifices of the oil throttle holes on the side slide carriages (3) are provided with oil throttlers (6), the aperture of the air outlet hole on the air throttler (5) is 0.1mm, and the aperture of the oil outlet hole on the oil throttler (6) is 0.3 mm; the static-pressure fit clearance between the upper end face of the guide rail (1) and the upper slide carriage (2) and between the lower end face of the guide rail (1) and the lower slide carriage (4) is 7-9 mu m, and the static-pressure fit clearance between the side face of the guide rail (1) and the side slide carriage (3) is 15-18 mu m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922027453.4U CN211059200U (en) | 2019-11-21 | 2019-11-21 | Air-oil mixed static pressure guide rail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922027453.4U CN211059200U (en) | 2019-11-21 | 2019-11-21 | Air-oil mixed static pressure guide rail |
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| Publication Number | Publication Date |
|---|---|
| CN211059200U true CN211059200U (en) | 2020-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922027453.4U Active CN211059200U (en) | 2019-11-21 | 2019-11-21 | Air-oil mixed static pressure guide rail |
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| CN (1) | CN211059200U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110762118A (en) * | 2019-11-21 | 2020-02-07 | 江苏集萃精凯高端装备技术有限公司 | An air-oil hybrid hydrostatic guideway |
| CN116944898A (en) * | 2023-09-19 | 2023-10-27 | 北京广工精密技术有限公司 | Hydrostatic guideway with locking function |
-
2019
- 2019-11-21 CN CN201922027453.4U patent/CN211059200U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110762118A (en) * | 2019-11-21 | 2020-02-07 | 江苏集萃精凯高端装备技术有限公司 | An air-oil hybrid hydrostatic guideway |
| CN116944898A (en) * | 2023-09-19 | 2023-10-27 | 北京广工精密技术有限公司 | Hydrostatic guideway with locking function |
| CN116944898B (en) * | 2023-09-19 | 2023-11-28 | 北京广工精密技术有限公司 | Hydrostatic guideway with locking function |
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