CN108941623A - A kind of composite throttling formula static pressure air-bearing electro spindle - Google Patents
A kind of composite throttling formula static pressure air-bearing electro spindle Download PDFInfo
- Publication number
- CN108941623A CN108941623A CN201810026591.8A CN201810026591A CN108941623A CN 108941623 A CN108941623 A CN 108941623A CN 201810026591 A CN201810026591 A CN 201810026591A CN 108941623 A CN108941623 A CN 108941623A
- Authority
- CN
- China
- Prior art keywords
- end cap
- porous material
- axle sleeve
- axial
- air intake
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000003068 static effect Effects 0.000 title claims abstract description 9
- 239000002131 composite material Substances 0.000 title claims abstract description 8
- 239000011148 porous material Substances 0.000 claims abstract description 58
- 239000000498 cooling water Substances 0.000 claims abstract description 15
- 238000010943 off-gassing Methods 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 229910000906 Bronze Inorganic materials 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 239000010974 bronze Substances 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 230000005611 electricity Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
Classifications
-
- 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
- B23Q1/70—Stationary or movable members for carrying working-spindles for attachment of tools or work
-
- 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
Abstract
A kind of composite throttling formula static pressure air-bearing electro spindle, including central spindle (1), axial restraint set (2), right axle sleeve (3), orifice restriction air intake duct (4), main shaft (5), cooling water inlet channel (6), motor stator (7), rotor (8), radial throttle orifice (9), radial porous material (10), left end cap fixing screws (11), left end cap (12), axial throttle orifice (13), axial porous material (14), porous material throttles air intake duct (15), left axle sleeve (16), cooling water outlet road (17), sealing ring (18), right end cap fixing screws (19), right end cap (20), end cap outgassing groove (21), external flange disk (22), flat key (23), fixture nut (24), gas off-take (25), axle sleeve fixing screws (26 ), orifice restriction air intake duct (4), porous material throttling air intake duct (15) are equipped in the present invention in main shaft (5), compared with single throttle style, by the air pressure for controlling two air intake ducts, two kinds of throttle styles are made to play a role jointly, the stability for improving central spindle rotation solves the problems, such as that central spindle rotational stability declines.
Description
Technical field:
The present invention relates to a kind of composite throttling formula static pressure air-bearing electro spindle, belongs to ultraprecise pressurized air lubricating area.
Background technique:
Air-bearing is to make lubricant with gas, using the viscosity of gas, the pressure of gas in gap is improved, thus by axis
Suspend the bearing of getting up.Compared with conventional oil lubrication bearing, it has, and frictional resistance is extremely low, noise is small, precision is high, the service life is long, suitable
With wide temperature range, it is applicable in the good characteristics such as velocity interval is big.Therefore it is widely used in national defence, new energy, lathe and medical treatment
Etc. industries, especially more have apparent superiority in High speed Rotating Mechanical Devices and ultraprecise Instrument technology field.
In the static-pressure air bearing of the prior art, often only with a kind of single throttle style, with orifice restriction or
Based on porous material throttling.Wherein using the air-bearing of orifice restriction mode be aerostatic bearing it is a kind of most typically,
Most popular form, it is easily worked and dynamic stability is very good.The air-bearing to be throttled using porous material
Surface generates more uniform pressure distribution, to very high bearing capacity and static rigidity and have dynamic well
Stability.
In the static-pressure air bearing of hole throttle type, central spindle high speed rotation, so that the gas in central spindle and bearing clearance produces
, that is, there is diverging flow in raw additional circumferential flow, thus the problems such as generating uneven pressure, stability decline.In addition to this, exist
When air-bearing is hit by the external world, it is easy to destroy the stationarity that main shaft is in the state that runs at high speed, meeting when serious
So that main shaft stops operating, shorten the service life of main shaft.
Summary of the invention:
For overcome the deficiencies in the prior art, the purpose of the present invention is to provide a kind of composite throttling formula static pressure air-bearing electricity masters
Axis, since radial throttle orifice and radial porous material are uniformly distributed circumferentially on axle sleeve, high pressure gas is sprayed from radial throttle orifice
Onto central spindle, when the air pressure for spraying into gas is excessively high or the too low high-speed rotating stability decline so as to cause central spindle, pass through
The air pressure for the high pressure gas being sprayed onto central spindle from radial porous material is adjusted, to improve the stability of central spindle when rotating at high speed.
In order to realize the purpose of the present invention, proposed adoption following technical scheme:
The present invention includes: central spindle, axial restraint set, right axle sleeve, orifice restriction air intake duct, main shaft, cooling water inlet channel, electricity
Machine stator, rotor, radial throttle orifice, radial porous material, left end cap fixing screws, left end cap, axial throttle orifice, axial direction
Porous material, porous material throttling air intake duct, left axle sleeve, cooling water outlet road, sealing ring, right end cap fixing screws, right end cap, end
Lid outgassing groove, external flange disk, flat key, fixture nut, gas off-take, axle sleeve fixing screws, it is characterised in that: the main shaft
It is interior to be equipped with orifice restriction air intake duct, porous material throttling air intake duct, cooling water inlet channel, cooling water outlet road and gas off-take, right axle sleeve
Orifice restriction air intake duct, porous material throttling air intake duct and gas off-take, left end cap are interior equipped with aperture section with being equipped in left axle sleeve
Flow inlet port and porous material throttling air intake duct, right end cap is interior to be equipped with end cap outgassing groove, and sealing ring is arranged in main shaft and right axle
On interface between set, left end cap and left axle sleeve, right axle sleeve, left axle sleeve are fixed on main shaft by axle sleeve fixing screws,
Motor stator is mounted between right axle sleeve and left axle sleeve, and radial throttle orifice and radial porous material are equipped in right axle sleeve and left axle sleeve
Material, is equipped with axial throttle orifice and axial porous material in main shaft and left end cap, radial throttle orifice and axial direction throttle orifice with it is small
Hole throttling air intake duct connection, radial porous material and axial porous material are connected to porous material throttling air intake duct, and left end cap is logical
It crosses left end cap screw to be fixed on main shaft, central spindle left end protrusion is located in the space that main shaft and left end cap surround, electricity
Machine rotor is mounted in central spindle, and axial restraint is set between rotor and right end cap, and right end cap passes through right end cap screw
It is fixed with main shaft and right axle sleeve, external flange disk is arranged in central spindle by flat key, and fixture nut fixes external flange disk
In central spindle, radial throttle orifice and radial porous material are evenly distributed on the circumference of above-mentioned right axle sleeve and left axle sleeve, it is radial
The number of throttle orifice is six eight either 12, is evenly distributed with axial throttle orifice on main shaft and left end cap
With axial porous material, the number of axial throttle orifice is six eight either 12, above-mentioned radial porous material
Material is Porous Graphite bronze or ceramics with axial porous material.
The features of the present invention:
Since radial throttle orifice and radial porous material are evenly distributed on axle sleeve along same periphery, high pressure gas is from diameter
It is sprayed onto central spindle to throttle orifice, under the air pressure for spraying into gas is excessively high or the too low high-speed rotating stability so as to cause central spindle
When drop, by adjusting the air pressure for the high pressure gas being sprayed onto central spindle from radial porous material, to improve central spindle when rotating at high speed
Stability.
Detailed description of the invention:
Fig. 1 illustrates structure of the invention figure.
Fig. 2 illustrates gas off-take figure of the present invention.
1, central spindle；2, axial restraint set；3, right axle sleeve；4, orifice restriction air intake duct；5, main shaft；6, cooling water inlet channel；
7, motor stator；8, rotor；9, radial throttle orifice；10, radial porous material；11, left end cap fixing screws；12, left end
Lid；13, axial throttle orifice；14, axial porous material；15, porous material throttling air intake duct；16, left axle sleeve；17, cooling water outlet
Road；18, sealing ring；19, right end cap fixing screws；20, right end cap；21, end cap outgassing groove；22, external flange disk；23, flat key；
24, fixture nut；25, gas off-take；26, axle sleeve fixing screws.
Specific embodiment:
Illustrate specific work process of the invention with reference to the accompanying drawing.
The present invention includes central spindle 1, axial restraint set 2, right axle sleeve 3, orifice restriction air intake duct 4, main shaft 5, cooling water inlet
Road 6, motor stator 7, rotor 8, radial throttle orifice 9, radial porous material 10, left end cap fixing screws 11, left end cap 12,
Axial throttle orifice 13, axial porous material 14, porous material throttling air intake duct 15, left axle sleeve 16, cooling water outlet road 17, sealing ring
18, right end cap fixing screws 19, right end cap 20, end cap outgassing groove 21, external flange disk 22, flat key 23, fixture nut 24, outlet
Road 25, axle sleeve fixing screws 26, be equipped in main shaft 5 orifice restriction air intake duct 4, porous material throttling air intake duct 15, it is cooling into
Orifice restriction air intake duct 4, porous material are equipped in water channel 6, cooling water outlet road 17 and gas off-take 25, right axle sleeve 3 and left axle sleeve 16
Material throttling air intake duct 15 and gas off-take 25, left end cap 12 is interior to be equipped with orifice restriction air intake duct 4 and porous material throttling air intake duct 15,
End cap outgassing groove 21 is equipped in right end cap 20, sealing ring 18 is arranged in main shaft 5 and right axle sleeve 3, left end cap 12 and left axle sleeve 16
Between interface on, right axle sleeve 3, left axle sleeve 16 are fixed on main shaft 5 by axle sleeve fixing screws 26, and motor stator 7 is pacified
Between right axle sleeve 3 and left axle sleeve 16, radial throttle orifice 9 and radial porous material are equipped in right axle sleeve 3 and left axle sleeve 16
10, axial throttle orifice 13 and axial porous material 14, radial throttle orifice 9 and axial section are equipped in main shaft 5 and left end cap 12
Discharge orifice 13 is connected to orifice restriction air intake duct 4, and radial porous material 10 and axial porous material 14 and porous material throttle air inlet
Road 15 is connected to, and left end cap 12 is fixed on main shaft 5 by left end cap screw 11, and 1 left end protrusion of central spindle is located at main shaft 5
In the space surrounded with left end cap 12, rotor 8 is mounted in central spindle 1, and 2 setting of axial restraint set is in rotor 8 and the right side
Between end cap 20, right end cap 20 is fixed by right end cap screw 19 and main shaft 5 and right axle sleeve 3, and external flange disk 22 passes through flat
Key 23 is arranged in central spindle 1, and external flange disk 22 is fixed in central spindle 1 by fixture nut 24, the circle of right axle sleeve 3 and left axle sleeve 16
Be evenly distributed with radial throttle orifice 9 and radial porous material 10 on week, the number of radial throttle orifice 9 be six either eight or
Person is 12, and axial throttle orifice 13 and axial porous material 14 are evenly distributed on main shaft 5 and left end cap 12, axial to throttle
The number in hole 13 is six eight either 12, and radial porous material 10 and axial porous material 14 are Porous
Graphite bronze or ceramics.
Claims (3)
1. a kind of composite throttling formula static pressure air-bearing electro spindle, including central spindle (1), axial restraint set (2), right axle sleeve (3), aperture section
Flow inlet port (4), main shaft (5), cooling water inlet channel (6), motor stator (7), rotor (8), radial throttle orifice (9), diameter
To porous material (10), left end cap fixing screws (11), left end cap (12), axial throttle orifice (13), axial porous material (14),
Porous material throttling air intake duct (15), left axle sleeve (16), cooling water outlet road (17), sealing ring (18), right end cap fixing screws
(19), right end cap (20), end cap outgassing groove (21), external flange disk (22), flat key (23), fixture nut (24), gas off-take
(25), axle sleeve fixing screws (26), it is characterised in that: be equipped in the main shaft (5) orifice restriction air intake duct (4), porous
Material restrictor air intake duct (15), cooling water inlet channel (6), cooling water outlet road (17) and gas off-take (25), right axle sleeve (3) and left axle sleeve
(16) orifice restriction air intake duct (4), porous material throttling air intake duct (15) and gas off-take (25) are equipped in, left end cap (12) is interior
Equipped with orifice restriction air intake duct (4) and porous material throttling air intake duct (15), end cap outgassing groove (21) are equipped in right end cap (20),
It is right on the interface that sealing ring (18) is arranged between main shaft (5) and right axle sleeve (3), left end cap (12) and left axle sleeve (16)
Axle sleeve (3), left axle sleeve (16) are fixed on main shaft (5) by axle sleeve fixing screws (26), and motor stator (7) is mounted on right axle
It covers between (3) and left axle sleeve (16), is equipped with radial throttle orifice (9) and radial porous material in right axle sleeve (3) and left axle sleeve (16)
Expect (10), axial throttle orifice (13) and axial porous material (14) are equipped in main shaft (5) and left end cap (12), it is radial to throttle
Hole (9) and axial throttle orifice (13) are connected to orifice restriction air intake duct (4), radial porous material (10) and axial porous material
(14) it is connected to porous material throttling air intake duct (15), left end cap (12) is fixed on main shaft (5) by left end cap screw (11)
On, central spindle (1) left end protrusion is located in the space that main shaft (5) and left end cap (12) surround, and rotor (8) is mounted on
In central spindle (1), axial restraint set (2) is arranged between rotor (8) and right end cap (20), and right end cap (20) passes through right end cap
Screw (19) and main shaft (5) and right axle sleeve (3) are fixed, and external flange disk (22) is arranged on central spindle (1) by flat key (23),
External flange disk (22) is fixed on central spindle (1) by fixture nut (24).
2. a kind of composite throttling formula static pressure air-bearing electro spindle according to claim 1, it is characterised in that: right axle sleeve (3) and
Radial throttle orifice (9) and radial porous material (10), the number of radial throttle orifice (9) are evenly distributed on the circumference of left axle sleeve (16)
Mesh is six eight either 12, is evenly distributed with axial throttle orifice on main shaft (5) and left end cap (12)
(13) and axial porous material (14), the number of axial throttle orifice (13) are six eight either 12.
3. a kind of composite throttling formula static pressure air-bearing electro spindle according to claim 1, it is characterised in that: radial porous material
It (10) is Porous Graphite bronze or ceramics with axial porous material (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810026591.8A CN108941623B (en) | 2018-01-02 | 2018-01-02 | Composite throttling type static pressure air floatation electric spindle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810026591.8A CN108941623B (en) | 2018-01-02 | 2018-01-02 | Composite throttling type static pressure air floatation electric spindle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108941623A true CN108941623A (en) | 2018-12-07 |
| CN108941623B CN108941623B (en) | 2024-04-16 |
Family
ID=64495746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810026591.8A Active CN108941623B (en) | 2018-01-02 | 2018-01-02 | Composite throttling type static pressure air floatation electric spindle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108941623B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110695380A (en) * | 2019-11-16 | 2020-01-17 | 洛阳传顺机械设备有限公司 | Ultrasonic wave air static pressure electricity main shaft |
| CN114310427A (en) * | 2022-01-26 | 2022-04-12 | 郑州大学 | Axial feeding and rotating device for ultra-precision machining |
| CN114589320A (en) * | 2022-02-07 | 2022-06-07 | 北京海普瑞森超精密技术有限公司 | Full-cooling type gas static pressure main shaft |
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| CN110695380A (en) * | 2019-11-16 | 2020-01-17 | 洛阳传顺机械设备有限公司 | Ultrasonic wave air static pressure electricity main shaft |
| CN110695380B (en) * | 2019-11-16 | 2024-04-19 | 洛阳传顺机械设备有限公司 | Ultrasonic air static pressure motorized spindle |
| CN114310427A (en) * | 2022-01-26 | 2022-04-12 | 郑州大学 | Axial feeding and rotating device for ultra-precision machining |
| CN114589320A (en) * | 2022-02-07 | 2022-06-07 | 北京海普瑞森超精密技术有限公司 | Full-cooling type gas static pressure main shaft |
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| Publication number | Publication date |
|---|---|
| CN108941623B (en) | 2024-04-16 |
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