CN115523231A - High-rotation-precision large-bearing aerostatic bearing with radial bearing for regional gas supply - Google Patents
High-rotation-precision large-bearing aerostatic bearing with radial bearing for regional gas supply Download PDFInfo
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- CN115523231A CN115523231A CN202211132054.4A CN202211132054A CN115523231A CN 115523231 A CN115523231 A CN 115523231A CN 202211132054 A CN202211132054 A CN 202211132054A CN 115523231 A CN115523231 A CN 115523231A
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- 230000002706 hydrostatic effect Effects 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 2
- 206010022000 influenza Diseases 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 67
- 238000003754 machining Methods 0.000 description 5
- 125000004122 cyclic group Chemical group 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
- F16C32/0603—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a gas cushion, e.g. an air cushion
- F16C32/0614—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a gas cushion, e.g. an air cushion the gas being supplied under pressure, e.g. aerostatic bearings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
- B23Q1/26—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members
- B23Q1/38—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members using fluid bearings or fluid cushion supports
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2322/00—Apparatus used in shaping articles
- F16C2322/39—General build up of machine tools, e.g. spindles, slides, actuators
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The utility model provides a big bearing gas hydrostatic bearing of high gyration precision of radial bearing subregion air feed, belongs to ultra-precision and equips manufacturing technical field, and the concrete scheme is as follows: the utility model provides a radial bearing divides high gyration precision of regional air feed to bear aerostatic bearing greatly, includes main shaft rotor, axle sleeve and base, the axle sleeve cover is established on main shaft rotor and is fixed on the base, set up a plurality of axial air flue I along the circumferencial direction equipartition on the axle sleeve, the equipartition is provided with a plurality of radial air flue I on every axial air flue I, a plurality of radial air flue I and the I intercommunication of the axial air flue that corresponds, the I nearly main shaft rotor's of every radial air flue one end all is provided with flow controller I, and the air feed pressure of axial air flue I from bottom to top gradually reduces. In practical application, the invention can realize higher rotation precision of the main shaft rotor in the working process by finely adjusting the air supply pressure of the air supply source in each area, and the bearing capacity of the whole main shaft can be improved by more than 2 times.
Description
Technical Field
The invention belongs to the technical field of manufacturing of ultra-precision equipment, and particularly relates to a high-rotation-precision large-bearing aerostatic bearing with a radial bearing for supplying gas in a regional mode.
Background
A roller mold ultra-precision machining machine tool belongs to the field of ultra-precision machining and manufacturing, and mainly aims at an optical roller mold for manufacturing a large-size optical microstructure film, and can quickly realize the copying and machining of the large-size optical microstructure film by applying the roller mold. Because the size and the weight of a roller die workpiece are relatively large, the general roller die ultra-precise processing machine tool is mainly of a horizontal structure, and because the precision of the roller die is higher, the requirements of high bearing capacity, high rigidity, high rotation precision, high resolution, small heating deformation, no creeping phenomenon and the like are provided for a machine tool spindle.
Because of the high requirements on the main shaft of the roller die ultra-precision machining machine tool, at present, a hydrostatic bearing or a aerostatic bearing is mainly adopted as the main shaft component of the roller die ultra-precision machining machine tool. The hydrostatic bearing has the advantages of large bearing capacity, high rigidity and excellent dynamic performance, but the temperature rise of high-viscosity hydraulic oil at high rotating speed is severe, and the structural thermal deformation causes the precision of the main shaft to be sharply reduced, so a high-precision cooling unit must be arranged when the main shaft of the roller machine tool uses the hydrostatic main shaft at present to control the temperature of lubricating fluid in the main shaft in real time, and the error increase of the main shaft caused by the temperature rise is avoided.
The aerostatic bearing separates the rotating shaft from the shaft sleeve by using gas with extremely low viscosity, and has the advantages of small friction resistance, almost no temperature rise, no creeping phenomenon in low-speed motion, extremely high positioning precision and the like. However, the rigidity and the bearing capacity of the aerostatic bearing are far smaller than those of the hydrostatic bearing, so that the rigidity and the bearing capacity of the aerostatic bearing are improved as much as possible under the condition of keeping the original characteristics of the aerostatic bearing, and the key is to apply the aerostatic spindle to the ultra-precise processing machine tool of the roller die.
Disclosure of Invention
In order to improve the rotation precision and the bearing capacity of the aerostatic bearing, the invention provides the aerostatic bearing with high rotation precision and large bearing capacity, wherein the aerostatic bearing is provided with radial bearings for supplying gas in different regions.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a radial bearing divides high gyration precision of regional air feed to bear aerostatic bearing greatly, includes main shaft rotor, axle sleeve and base, the axle sleeve cover is established on main shaft rotor and is fixed on the base, set up a plurality of axial air flue I along the circumferencial direction equipartition on the axle sleeve, the equipartition is provided with a plurality of radial air flue I on every axial air flue I, a plurality of radial air flue I and the I intercommunication of the axial air flue that corresponds, the I nearly main shaft rotor's of every radial air flue one end all is provided with flow controller I, and the air feed pressure of axial air flue I from bottom to top gradually reduces.
Compared with the prior art, the invention has the beneficial effects that:
compared with the traditional aerostatic bearing, the radial bearing is only divided into areas in the vertical direction, then the independent air supply ports are adopted for the air supply channels in different areas of the radial bearing, and in addition, other structures of the bearing are reserved without being changed, so that the existing processing technology and processing equipment can be fully utilized.
The radial bearing and the thrust bearing of the gas hydrostatic bearing respectively adopt an independent gas supply source and an independent gas circuit, the gas supply pressure of the thrust bearing ensures that no gas hammer occurs, and meanwhile, the gas supply pressure of each axial gas passage I is increased to be more than 0.8MPa by utilizing the existing supercharging equipment, so that the bearing capacity of the bearing is improved.
The radial bearing of the gas hydrostatic bearing is divided into each independent gas supply area in the vertical direction and provided with independent gas supply pressure, when the radial bearing of the gas hydrostatic bearing is supplied with gas, in order to save cost and fully utilize the prior art, an axial gas passage I with the same gas supply pressure is communicated with a gas supply source through a gas passage, and a pressure reducing valve is arranged on the gas passage, so that the radial bearing can be independently supplied with gas through one gas source, the gas supply pressure of the area below the radial bearing is high, the gas supply pressure of the area above the radial bearing is low through the adjustment of the pressure reducing valve of each area, and the gas film pressure of each area of the radial bearing in the vertical direction is gradually reduced from bottom to top.
Drawings
FIG. 1 is a schematic axial sectional view of a aerostatic bearing according to the invention;
FIG. 2 is a schematic view of a radial bearing gas supply system for the aerostatic bearing of the present invention;
FIG. 3 is a schematic cross-sectional view of a radial bearing gas supply area of the aerostatic bearing of the present invention;
FIG. 4 is a schematic perspective view of a aerostatic bearing according to the present invention;
in the figure, 1, a spindle rotor, 2, a shaft sleeve, 3, a base, 4, an air supply source, 5, a pressure reducing valve, 6, a front radial plate, 11, a long shaft, 12, a thrust plate, 21, axial air passages I, 22, radial air passages I, 23, throttles I, 24, radial air supply passages, 25, air sealing plugs I, 26, radial air passages III, 27, axial air passages IV, 28, axial air passages V, 29, air sealing plugs II, 30, air sealing plugs III, 61, radial air passages II, 62, axial air passages II, 63, axial air passages III, 64, a gas distributing ring, 65, a throttler II, 71, a first air passage, 72, a second air passage, 73, a third air passage, 74, a fourth air passage, 75, a fifth air passage, 76 and a sixth air passage, 77, seventh gas circuit, 81, first gas supply area, 82, second gas supply area, 83, third gas supply area, 84, fourth gas supply area, 85, fifth gas supply area, 86, sixth gas supply area, 87, seventh gas supply area, 211, first axial gas passage I, 212, second axial gas passage I, 213, third axial gas passage I, 214, fourth axial gas passage I, 215, fifth axial gas passage I, 216, sixth axial gas passage I, 217, seventh axial gas passage I, 218, eighth axial gas passage I, 219, ninth axial gas passage I, 220, tenth axial gas passage I, 221, eleventh axial gas passage I, 222, twelfth axial gas passage I.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the embodiments of the present invention and the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the invention, rather than all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work based on the embodiments of the present invention belong to the protection scope of the present invention. For clarity and convenience, in the following embodiments, the end of the front spoke plate 6 of the aerostatic bearing is a front end, the end far away from the front spoke plate 6 is a rear end, and the vertical direction is a direction perpendicular to the bottom surface of the base 3.
Detailed description of the invention
The utility model provides a radial bearing divides big load-bearing aerostatic bearing of high gyration precision of regional air feed, includes main shaft rotor 1, axle sleeve 2 and base 3, main shaft rotor 1 includes cylindric major axis 11 and sets up the cyclic annular flange thrust plate 12 at major axis 11 front end, axle sleeve 2 is the cylindric structure that one side was provided with cyclic annular flange, 2 covers of axle sleeve are established on main shaft rotor 1's major axis 11, pass through the bolt fastening on base 3 with its cyclic annular flange, axle sleeve 2 is gone up and is set up a plurality of axial air flue I21 along the horizontal equipartition of circumferencial direction, and the equipartition is provided with a plurality of radial air flue I22 on every axial air flue I21, a plurality of radial air flue I22 communicates with the I21 vertical of the axial air flue that corresponds, and the one end that every radial air flue I22 is close to main shaft rotor 1 all is provided with flow controller I23, and the air feed pressure to axial air flue I21 from bottom to top reduces gradually.
Preferably, 4 radial air passages i22 are arranged on each axial air passage i21, and the long shaft 11 and the thrust plate 32 are of an integral structure.
Further, be provided with the radial air feed way 24 of a plurality of on the axle sleeve 2, the radial air feed way 24 of a plurality of sets up and mutually perpendicular intercommunication with a plurality of axial air flue I21 one-to-one, a plurality of axial air flue I21 communicates with air feed source 4 through the radial air feed way 24 and the gas circuit that correspond, and is preferred, radial air feed way 24 is seted up on the cyclic annular flange of axle sleeve 2.
Further, the air supply pressure to the two axial air passages I21 which are symmetrically distributed at the left and the right is the same.
Preferably, the axial air passages I21 at the bottom and the top are respectively communicated with the air supply source 4 through an air passage, the two axial air passages I21 with the same air supply pressure are communicated with the air supply source 4 through an air passage, and all the air passages are provided with the pressure reducing valves 5. The air supply pressure is adjusted to a certain extent by utilizing the pressure reducing valves 5 corresponding to the axial air passages I21, high-pressure air with different pressures is generated to pass through the air passages, radial air films with different pressures are formed in all circumferential areas on the spindle rotor 1 after passing through the corresponding throttlers I23, the air supply pressure of the axial air passage I21 at the lowest side of the shaft sleeve 2 is the largest, the air supply pressure of the axial air passages I21 is gradually reduced along the vertical direction, so that the radial air films with gradually reduced pressure in the vertical direction of the spindle rotor 1 can be realized, the air supply pressure in all air passages output by the external air supply source 4 is finely adjusted, and the air floatation spindle has high rotation precision and high bearing capacity.
Furthermore, an air sealing plug I25 is arranged at one end, far away from the main shaft rotor 1, of each radial air passage I22, and air leakage of each radial air passage I is avoided.
Further, big bear aerostatic bearing still includes preceding radials 6, be provided with the holding tank on the rear end face of preceding radials 6, the thrust plate 12 of main shaft rotor is located the holding tank, preceding radials 6 passes through bolt fixed connection with the preceding ring-shaped flange of axle sleeve 2.
Further, be provided with radial air flue II 61 of a plurality of from the surface on the preceding radials 6 to inside axle center along the circumferencial direction equipartition, be provided with a plurality of axial air flue II 62 from the rear end face to the preceding circumferencial direction equipartition, a plurality of axial air flue II 62 sets up and mutually perpendicular intercommunication with radial air flue II 61 one-to-one of a plurality of, preceding lateral wall from the holding tank is provided with a plurality of axial air flue III 63 to the forward edge circumferencial direction equipartition on the preceding radials 6, a plurality of axial air flue III 63 sets up and mutually perpendicular intercommunication with a plurality of radial air flue II 61 one-to-one, be provided with a plurality of radial air flue III 26 from the surface to inside axle center along the circumferencial direction equipartition on the preceding annular flange of axle sleeve 2, the preceding terminal surface of axle sleeve 2 is provided with a plurality of axial air flue IV 27 and a plurality of axial air flue V28 along the circumferencial direction equipartition backward, a plurality of axial IV 27 and a plurality of axial V28 all set up and mutually perpendicular intercommunication with a plurality of radial air flue III air flue 26 one-to one, a plurality of axial air flue II 62 and a plurality of axial IV 27.
Further, be provided with the circumference recess on the surface circumferencial direction of preceding radials 6, be provided with in the circumference recess and divide gas ring 64, a plurality of radial air flue II 61 all communicates with branch gas ring 64, divide gas ring 64 and outside air supply equipment intercommunication, a plurality of axial air flue III 63 all is provided with flow controller II 65 with the one end of the nearly thrust plate 12 of a plurality of axial air flue V28, all is provided with air-tight end cap II 29 with external intercommunication department on every radial air flue III 26, avoids gas leakage. The gas distribution ring 64 supplies gas for all radial gas passages II 61, and high-pressure gas can be communicated with the throttler II 65 through the communication between the radial gas passages II 61 and the corresponding axial gas passages III 63, II 62, IV 27, III 26 and V28, so that the gas supply for all thrust bearing throttlers II 65 can be realized only by one gas supply hole. After passing through the restrictor ii 65, the high-pressure gas forms a thrust gas film on the thrust plate 12 of the spindle rotor 1, so that the spindle can bear closed axial loads.
Further, every I21 of axial air flue all sets up the end cap that seals up III 30 with external intercommunication department, and is preferred, and the end cap that seals up III 30 sets up in the rear end of axle sleeve 2, avoids each I of axial air flue gas leakage.
The shaft sleeve 2, the restrictor I23, the air sealing plug III 30 arranged on the axial air passage I21 and the air sealing plug I25 arranged on the radial air passage I22 jointly form a radial bearing of the aerostatic bearing.
The annular flange of the sleeve 2, the thrust plate 12 and the front web 6 of the spindle rotor 1 constitute the thrust bearing of the aerostatic bearing.
The whole gas static pressure main shaft is provided with a plurality of mutually independent radial bearing gas paths and independent thrust bearing gas paths. The thrust bearing realizes independent air supply through the air distribution ring 64, the radial bearing divides the areas in the vertical direction and then independently supplies air to each area through the corresponding radial air supply channel 24, the air supply pressure of each area of the thrust bearing and the radial bearing is increased to be higher than 0.8MPa by utilizing supercharging equipment, and the air hammer phenomenon is avoided.
Because each axial air passage I21 is provided with an independent radial air supply passage 24, the air supply area of the radial bearing in the vertical direction is divided, then the same air supply pressure is adopted for the axial air passages I21 and the corresponding radial air passages I22 in each area to supply air, the air supply of the radial bearing in the vertical direction in the divided areas is realized, then the higher pressure is adopted for the areas below the radial bearing to supply air, and the lower pressure is adopted for the areas above the radial bearing to supply air, so that the air film pressure of each area of the radial bearing from bottom to top in the vertical direction is gradually reduced, the air supply pressure of the air supply source of each radial bearing is increased to be above 0.8MPa through external supercharging equipment, the large bearing of the main shaft is realized, and the air supply pressure of each radial bearing air supply source is finely adjusted by combining the actual bearing and the weight of the main shaft rotor 1 and other accessories, so that the main shaft rotor 1 has higher rotation precision in the working process.
In order to reduce the design and manufacturing cost, the whole radial bearing is supplied with air by the air supply source 4, then the existing equipment is fully adopted, and the air supply is adjusted in each radial bearing area by the aid of the plurality of pressure reducing valves 5, so that the cost is greatly reduced while the bearing of the aerostatic bearing is greatly improved, and the aerostatic bearing has high cost performance.
Detailed description of the invention
The present embodiment is a preferable scheme for the embodiment, the number of the axial air passages i21 is 12, when viewed from the rear end to the front end of the shaft sleeve, a first axial air passage i 211, a second axial air passage i 212, a third axial air passage i 213, a fourth axial air passage i 214, a fifth axial air passage i 215, a sixth axial air passage i 216, a seventh axial air passage i 217, an eighth axial air passage i 218, a ninth axial air passage i 219, a tenth axial air passage i 220, an eleventh axial air passage i 221, and a twelfth axial air passage i 222 are sequentially arranged from the bottom in a clockwise direction, the first axial air passage i 211 is communicated with the source 4 through a first air supply 71, and air is communicated to the surface of the main shaft rotor 1 to form a first air supply area 81; the seventh axial air channel I217 is communicated with the air supply source 4 through a second air channel 72, and the air is communicated to the surface of the spindle rotor 1 to form a second air supply area 82; the second axial air passage I212 and the twelfth axial air passage I222 are communicated with the air supply source 4 through a third air passage 73, and the air is communicated to the surface of the spindle rotor 1 to form a third air supply area 83; the third axial air passage I213 and the eleventh air passage I221 are communicated with the air supply source 4 through a fourth air passage 74, and the air is communicated to the surface of the spindle rotor 1 to form a fourth air supply area 84; the fourth axial air passage I214 and the tenth axial air passage I220 are communicated with the air supply source 4 through a fifth air passage 75, and air is communicated to the surface of the spindle rotor 1 to form a fifth air supply area 85; the fifth axial air passage I215 and the ninth axial air passage I219 are communicated with the air supply source 4 through a sixth air passage 76, and air is communicated to the surface of the spindle rotor 1 to form a sixth air supply area 86; the sixth axial air duct I216 and the eighth axial air duct I218 are communicated with the air supply source 4 through a seventh air path 77, and the air is communicated to the surface of the spindle rotor 1 to form a seventh air supply area 87; a pressure reducing valve 5 is installed on each air path.
Furthermore, it should be understood that although the present specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it is to be understood that all embodiments may be combined as appropriate by one of ordinary skill in the art to form other embodiments as will be apparent to those of skill in the art from the description herein.
Claims (10)
1. The utility model provides a radial bearing divides big bearing gas hydrostatic bearing that bears of high gyration precision of regional air feed which characterized in that: including main shaft rotor (1), axle sleeve (2) and base (3), axle sleeve (2) cover is established on main shaft rotor (1) and is fixed on base (3), set up a plurality of axial air flue I (21) along the circumferencial direction equipartition on axle sleeve (2), the equipartition is provided with radial air flue I (22) of a plurality of on every axial air flue I (21), radial air flue I (22) of a plurality of and the I (21) intercommunication of axial air flue that corresponds, the one end that every radial air flue I (22) is nearly main shaft rotor (1) all is provided with flow controller I (23), and the air feed pressure to axial air flue I (21) from bottom to top reduces gradually.
2. The aerostatic bearing of claim 1, wherein: the air supply pressure to the two axial air passages I (21) which are symmetrically distributed at the left and the right is the same.
3. The aerostatic bearing of claim 2, wherein: the axial air flue I (21) at the bottom is communicated with the air supply source (4) through an air path, the axial air flue I (21) at the top is communicated with the air supply source (4) through an air path, the two axial air flues I (21) with the same air supply pressure are communicated with the air supply source (4) through an air path, and all the air paths are provided with pressure reducing valves (5).
4. A aerostatic bearing according to claim 3, characterized in that: the number of the axial air passages I (21) is 12, a first axial air passage I (211), a second axial air passage I (212), a third axial air passage I (213), a fourth axial air passage I (214), a fifth axial air passage I (215), a sixth axial air passage I (216), a seventh axial air passage I (217), an eighth axial air passage I (218), a ninth axial air passage I (219), a tenth axial air passage I (220), an eleventh axial air passage I (221) and a twelfth axial air passage I (222) are arranged in sequence from the bottom along the clockwise direction, the first axial air passage I (211) is communicated with an air supply source (4) through an air passage, the seventh axial air channel I (217) is communicated with an air supply source (4) through an air channel, the second axial air passage I (212) and the twelfth axial air passage I (222) are communicated with the air supply source (4) through an air passage, the third axial air passage I (213) and the eleventh air passage I (221) are communicated with an air supply source (4) through an air passage, the fourth axial air passage I (214) and the tenth axial air passage I (220) are communicated with an air supply source (4) through an air passage, the fifth axial air passage I (215) and the ninth axial air passage I (219) are communicated with an air supply source (4) through an air passage, the sixth axial air passage I (216) and the eighth axial air passage I (218) are communicated with the air supply source (4) through an air passage.
5. Aerostatic bearing according to claim 3 or 4, characterized in that: be provided with radial air feed way (24) of a plurality of on axle sleeve (2), radial air feed way (24) of a plurality of sets up and communicates each other with a plurality of axial air flue I (21) one-to-one, a plurality of axial air flue I (21) are through radial air feed way (24) and gas circuit and air feed source (4) intercommunication that correspond.
6. The aerostatic bearing of claim 1, wherein: and an air sealing plug I (25) is arranged at one end of each radial air passage I (22) far away from the main shaft rotor (1).
7. The aerostatic bearing of claim 1, wherein: aerostatic bearing still includes preceding radials (6), be provided with the holding tank on the rear end face of preceding radials (6), main shaft rotor (1) includes long axis (11) and cover thrust plate (12) of establishing at long axis (11) front end, axle sleeve (2) cover is established on long axis (11), thrust plate (12) are located the holding tank, the front end fixed connection of preceding radials (6) and axle sleeve (2).
8. The aerostatic bearing of claim 7, wherein: preceding radials (6) go up from the surface to being provided with a plurality of radial air flue II (61) to inside axle center along the circumferencial direction equipartition, preceding radials (6) go up from the rear end face to be provided with a plurality of axial air flue II (62) along the circumferencial direction equipartition, a plurality of axial air flue II (62) and a plurality of radial air flue II (61) one-to-one set up and communicate each other, preceding lateral wall from the holding tank is provided with a plurality of axial air flue III (63) to leading edge circumferencial direction equipartition on preceding radials (6), a plurality of axial air flue III (63) and a plurality of radial air flue II (61) one-to-one set up and communicate each other, the front end of axle sleeve (2) is provided with radial air flue III (26) of a plurality of from the surface to inside axle center along the circumferencial direction equipartition, axle sleeve (2) are provided with a plurality of axial air flue IV (27) and a plurality of axial air flue V (28) from the preceding terminal surface along the circumferencial direction equipartition backward, a plurality of axial air flue IV (27) and a plurality of axial air flue V (28) all set up and communicate each other with the radial air flue III (26) one-to-one of a plurality of, a plurality of axial air flue II (62) and a plurality of axial air flue IV (27) one-to-one set up and communicate each other.
9. The aerostatic bearing of claim 8, wherein: be provided with on the surface circumferencial direction of preceding radials (6) and divide gas ring (64), a plurality of radial air flue II (61) all with divide gas ring (64) intercommunication, divide gas ring (64) and air feeder intercommunication, the one end of a plurality of axial air flue III (63) and a plurality of axial air flue V (28) nearly thrust plate (12) all is provided with flow controller II (65), all is provided with air-lock end cap II (29) with external intercommunication department on every radial air flue III (26).
10. The aerostatic bearing of claim 1, wherein: and an air sealing plug III (30) is arranged at the communication position of each axial air passage I (21) and the outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211132054.4A CN115523231A (en) | 2022-09-16 | 2022-09-16 | High-rotation-precision large-bearing aerostatic bearing with radial bearing for regional gas supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211132054.4A CN115523231A (en) | 2022-09-16 | 2022-09-16 | High-rotation-precision large-bearing aerostatic bearing with radial bearing for regional gas supply |
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| Publication Number | Publication Date |
|---|---|
| CN115523231A true CN115523231A (en) | 2022-12-27 |
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|---|---|---|---|
| CN202211132054.4A Pending CN115523231A (en) | 2022-09-16 | 2022-09-16 | High-rotation-precision large-bearing aerostatic bearing with radial bearing for regional gas supply |
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| GB1107711A (en) * | 1964-03-17 | 1968-03-27 | Clerk King Poynter & Company L | Improvements in or relating to oil stabilised gas bearings for heavy rotating loads |
| GB1138904A (en) * | 1966-01-07 | 1969-01-01 | Cem Comp Electro Mec | Aerostatic gas bearing |
| CN101780547A (en) * | 2010-03-30 | 2010-07-21 | 哈尔滨工业大学 | Separated drive spindle system of ultraprecision machining tool |
| CN102476193A (en) * | 2010-11-23 | 2012-05-30 | 大连创达技术交易市场有限公司 | Separating type flexibly driven spindle system for high-precision processing machine tool |
| CN103394711A (en) * | 2013-07-24 | 2013-11-20 | 宝鸡忠诚机床股份有限公司 | Large-size precise direct-drive spindle structure of numerical-control lathe |
| CN214837915U (en) * | 2020-12-29 | 2021-11-23 | 江苏九州传动科技有限公司 | Waterproof dustproof insert bearing seat |
| CN113894300A (en) * | 2021-10-26 | 2022-01-07 | 中国工程物理研究院机械制造工艺研究所 | Porous and micropore combined throttling gas static pressure turning electric spindle |
| CN216343477U (en) * | 2021-10-21 | 2022-04-19 | 上海胜富轴承机械有限公司 | Waterproof dustproof bearing frame |
-
2022
- 2022-09-16 CN CN202211132054.4A patent/CN115523231A/en active Pending
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| GB1107711A (en) * | 1964-03-17 | 1968-03-27 | Clerk King Poynter & Company L | Improvements in or relating to oil stabilised gas bearings for heavy rotating loads |
| GB1138904A (en) * | 1966-01-07 | 1969-01-01 | Cem Comp Electro Mec | Aerostatic gas bearing |
| CN101780547A (en) * | 2010-03-30 | 2010-07-21 | 哈尔滨工业大学 | Separated drive spindle system of ultraprecision machining tool |
| CN102476193A (en) * | 2010-11-23 | 2012-05-30 | 大连创达技术交易市场有限公司 | Separating type flexibly driven spindle system for high-precision processing machine tool |
| CN103394711A (en) * | 2013-07-24 | 2013-11-20 | 宝鸡忠诚机床股份有限公司 | Large-size precise direct-drive spindle structure of numerical-control lathe |
| CN214837915U (en) * | 2020-12-29 | 2021-11-23 | 江苏九州传动科技有限公司 | Waterproof dustproof insert bearing seat |
| CN216343477U (en) * | 2021-10-21 | 2022-04-19 | 上海胜富轴承机械有限公司 | Waterproof dustproof bearing frame |
| CN113894300A (en) * | 2021-10-26 | 2022-01-07 | 中国工程物理研究院机械制造工艺研究所 | Porous and micropore combined throttling gas static pressure turning electric spindle |
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