CN102011800A - Passive static pressure high-speed main shaft support structure and operation method thereof - Google Patents
Passive static pressure high-speed main shaft support structure and operation method thereof Download PDFInfo
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- CN102011800A CN102011800A CN2010101895557A CN201010189555A CN102011800A CN 102011800 A CN102011800 A CN 102011800A CN 2010101895557 A CN2010101895557 A CN 2010101895557A CN 201010189555 A CN201010189555 A CN 201010189555A CN 102011800 A CN102011800 A CN 102011800A
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- main shaft
- compression chamber
- compressed air
- air cell
- radial support
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Abstract
The invention discloses a passive static pressure high-speed main shaft support structure and an operation method thereof. The passive static pressure high-speed main shaft support structure comprises a radial support and a main shaft, wherein the main shaft is arranged in the radial support; a compressed air cavity is arranged between the mains haft and the radial support; an air inlet is arranged on the radial support; and a blade is arranged on the main shaft and positioned in the compressed air cavity. The passive static pressure high-speed main shaft support structure is simple and reduces the input cost.
Description
Technical field
The invention belongs to mechanical field, be specifically related to a kind of passive static pressure high-speed main spindle supporting structure and operation method thereof.
Background technique
In mechanical industry, the radial support element of main shaft adopts ball bearing mostly, but when the main shaft high speed rotating, the wearing and tearing of ball bearing strengthen, and the general practice is that adding oiling agent or lubricant oil are lubricated, but adds lubricant oil or oiling agent, can cause environmental pollution, have influence on the health of human body.
Existing existing people adopts aerostatic bearing to make the radial support element, promptly between main shaft and radial support, be provided with compressed air cell, and in compressed air cell, pass to high pressure air, and between main shaft and radial support, form the pressure air film, reduce wearing and tearing between the two, but this kind structure need insert the high-pressure air chamber by suction port with the high-pressure air source of the gas, and the input cost height is unfavorable for promoting the use of.
Summary of the invention
The objective of the invention is to overcome the defective of prior art, a kind of passive static pressure high-speed main spindle supporting structure is provided, structure of the present invention is simpler, has reduced input cost.
Its technological scheme is as follows:
A kind of passive static pressure high-speed main spindle supporting structure comprises radial support, main shaft, and main shaft is installed in the radial support, is provided with compressed air cell between main shaft and radial support; Be provided with suction port on radial support, also be provided with blade on main shaft, this blade is positioned at compressed air cell.
The invention also discloses a kind of operation method of passive static pressure high-speed main spindle supporting structure, main shaft drives the blade rotation in the high speed rotating in radial support, during the blade rotation, between blade and suction port, form negative cavity, extraneous air enters in the negative cavity from suction port, and enters compressed air cell under the effect of blade, and high-pressure air is in compressed air cell, make to form the pressure air film between main shaft and the radial support, reduce the wearing and tearing between main shaft and the radial support.
The technological scheme of the further refinement of aforementioned techniques scheme can be:
Described blade is lobus sinister sheet and lobus dexter sheet, and lobus sinister sheet, lobus dexter sheet lay respectively at the both sides of suction port; Described negative cavity is between lobus sinister sheet and lobus dexter sheet.
A wherein end of relative lobus sinister sheet and lobus dexter sheet is close mutually, the other end mutually away from.
Between described radial support and described rotating shaft, also be provided with the side compression chamber; The side compression chamber lays respectively at the side of described compressed air cell, and the side compression chamber communicates with described compressed air cell.
Described side compression chamber is left compression chamber, right compression chamber; Left side compression chamber, right compression chamber lay respectively at the both sides of described compressed air cell, and left compression chamber and/or right compression chamber all communicate with described compressed air cell.High-pressure air in the compressed air cell can also enter left compression chamber, right compression chamber, and forms the pressure air film at compressed air cell, left compression chamber, right compression chamber place respectively, the stability when improving main axis rotation.
Described radial support comprises middle part supporting, left part supporting and right part supporting, described compressed air cell, left compression chamber, right compression chamber are located between middle part supporting and the described main shaft respectively, between left part supporting and the described main shaft, right part supports and described main shaft between.This structure is easy to processing, reduces the difficulty of processing.
Be provided with left passage between the supporting of described middle part, left part supporting, be provided with right passage between the supporting of described middle part, right part supporting, described compressed air cell, left compression chamber communicate by left passage, and described compressed air cell, right compression chamber communicate by right passage.
In sum, advantage of the present invention is: during the main shaft high speed rotating, blade is pressed into compressed air cell with the air in the external world, and between main shaft and radial support, form the pressure air film, reduce the wearing and tearing between main shaft and the radial support, and do not need the external world that high-pressure air source is provided, simple in structure, input cost is low.
Description of drawings
Fig. 1 is the structural drawing of the embodiment of the invention one;
Fig. 2 is the structural drawing of the embodiment of the invention two;
Description of reference numerals:
1, main shaft, 2, compressed air cell, 3, suction port, 4, the lobus sinister sheet, 5, the lobus dexter sheet, 6, negative cavity, 7, left compression chamber, 8, right compression chamber, 9, left passage, 10, right passage, 11, the middle part supporting, 12, the left part supporting, 13, the right part supporting.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated:
Embodiment one
As shown in Figure 1, a kind of passive static pressure high-speed main spindle supporting structure comprises radial support, main shaft 1, and main shaft 1 is installed in the radial support, is provided with compressed air cell 2 between main shaft 1 and radial support; Be provided with suction port 3 on radial support, also be provided with blade on main shaft 1, this blade is positioned at compressed air cell 2, during main shaft 1 rotation, forms negative cavity 6 between blade and the suction port 3.
Wherein, described blade is lobus sinister sheet 4 and lobus dexter sheet 5, and lobus sinister sheet 4, lobus dexter sheet 5 lay respectively at the both sides of suction port 3; Negative cavity 6 between lobus sinister sheet 4 and lobus dexter sheet 5, a wherein end of relative lobus sinister sheet 4 and lobus dexter sheet 5 is close mutually, the other end mutually away from, and lobus sinister sheet 4 and lobus dexter sheet 5 are with respect to suction port 3 symmetries.
Between radial support and main shaft 1, also be provided with left compression chamber 7, right compression chamber 8; Left side compression chamber 7, right compression chamber 8 lay respectively at the both sides of compressed air cell 2, and left compression chamber 7, right compression chamber 8 all communicate with compressed air cell 2; Described radial support comprises middle part supporting 11, left part supporting 12 and right part supporting 13, compressed air cell 2, left compression chamber 7, right compression chamber 8 are located between middle part supporting 11 and the main shaft 1 respectively, between left part supporting 12 and the main shaft 1, right part support 13 and main shaft 1 between; Be provided with left passage 9 between middle part supporting 11, left part supporting 12, be provided with right path 10 between middle part supporting 11, right part supporting 13, compressed air cell 2, left compression chamber 7 communicate by left passage 9, and compressed air cell 2, right compression chamber 8 communicate by right path 10.
In the present embodiment, passive static pressure high-speed main spindle operation method is, main shaft 1 drives the blade rotation in the high speed rotating in radial support, during the blade rotation, form negative cavity 6 between blade and suction port 3, extraneous air enters in the negative cavity 6 from suction port 3, and under the effect of blade, enter compressed air cell 2, high-pressure air makes to form the pressure air film between main shaft 1 and the radial support in compressed air cell 2, reduces the wearing and tearing between main shaft 1 and the radial support.
Embodiment two
As shown in Figure 2, in the present embodiment, only be provided with lobus sinister sheet 4, make the high speed rotating of air, be pressed between radial support and the main shaft 1, and form the pressure air film, reduce the wearing and tearing between main shaft 1 and the radial support along with main shaft 1 in the left side of suction port 3.
Be specific embodiments of the invention only below, do not limit protection scope of the present invention with this; Any replacement and the improvement done on the basis of not violating the present invention's design all belong to protection scope of the present invention.
Claims (7)
1. a passive static pressure high-speed main spindle supporting structure comprises radial support, main shaft, and main shaft is installed in the radial support, is provided with compressed air cell between main shaft and radial support; It is characterized in that, be provided with suction port on radial support, also be provided with blade on main shaft, this blade is positioned at compressed air cell.
2. passive according to claim 1 static pressure high-speed main spindle supporting structure is characterized in that, described blade is lobus sinister sheet and lobus dexter sheet, and lobus sinister sheet, lobus dexter sheet lay respectively at the both sides of suction port; Described negative cavity is between lobus sinister sheet and lobus dexter sheet.
3. as passive static pressure high-speed main spindle supporting structure as described in each in the claim 1 to 2, it is characterized in that, between described radial support and described rotating shaft, also be provided with the side compression chamber; The side compression chamber lays respectively at the side of described compressed air cell, and the side compression chamber communicates with described compressed air cell.
4. as passive static pressure high-speed main spindle supporting structure as described in the claim 3, it is characterized in that described side compression chamber is left compression chamber, right compression chamber; Left side compression chamber, right compression chamber lay respectively at the both sides of described compressed air cell, and left compression chamber and/or right compression chamber all communicate with described compressed air cell.
5. as passive static pressure high-speed main spindle supporting structure as described in the claim 4, it is characterized in that, described radial support comprises middle part supporting, left part supporting and right part supporting, described compressed air cell, left compression chamber, right compression chamber are located between middle part supporting and the described main shaft respectively, between left part supporting and the described main shaft, right part supports and described main shaft between.
6. as passive static pressure high-speed main spindle supporting structure as described in the claim 5, it is characterized in that, between the supporting of described middle part, left part supporting, be provided with left passage, between the supporting of described middle part, right part supporting, be provided with right passage, described compressed air cell, left compression chamber communicate by left passage, and described compressed air cell, right compression chamber communicate by right passage.
7. the operation method of a passive static pressure high-speed main spindle supporting structure, it is characterized in that, main shaft drives the blade rotation in the high speed rotating in radial support, during the blade rotation, form negative cavity between blade and suction port, extraneous air enters in the negative cavity from suction port, and under the effect of blade, enter compressed air cell, high-pressure air makes to form the pressure air film between main shaft and the radial support in compressed air cell, reduces the wearing and tearing between main shaft and the radial support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101895557A CN102011800B (en) | 2010-05-26 | 2010-05-26 | Passive static pressure high-speed main shaft support structure and operation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101895557A CN102011800B (en) | 2010-05-26 | 2010-05-26 | Passive static pressure high-speed main shaft support structure and operation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102011800A true CN102011800A (en) | 2011-04-13 |
| CN102011800B CN102011800B (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010101895557A Expired - Fee Related CN102011800B (en) | 2010-05-26 | 2010-05-26 | Passive static pressure high-speed main shaft support structure and operation method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06280876A (en) * | 1993-03-30 | 1994-10-07 | Koyo Seiko Co Ltd | Hydrostatic gas bearing device |
| US5484208A (en) * | 1994-05-09 | 1996-01-16 | Massachusetts Institute Of Technology | Elastically supported self-compensating flow restrictors for optimizing hydrostatic bearing performance |
| US5957587A (en) * | 1996-07-15 | 1999-09-28 | Samsung Electronics Co., Ltd. | Air dynamic bearing |
| CN201093013Y (en) * | 2007-10-15 | 2008-07-30 | 中国科学院工程热物理研究所 | Internal groove self-lubricating movable static pressure coupled air bearing |
| CN201373026Y (en) * | 2008-12-04 | 2009-12-30 | 北京中科信电子装备有限公司 | Vacuumizing aerostatic radial bearing |
-
2010
- 2010-05-26 CN CN2010101895557A patent/CN102011800B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06280876A (en) * | 1993-03-30 | 1994-10-07 | Koyo Seiko Co Ltd | Hydrostatic gas bearing device |
| US5484208A (en) * | 1994-05-09 | 1996-01-16 | Massachusetts Institute Of Technology | Elastically supported self-compensating flow restrictors for optimizing hydrostatic bearing performance |
| US5957587A (en) * | 1996-07-15 | 1999-09-28 | Samsung Electronics Co., Ltd. | Air dynamic bearing |
| CN201093013Y (en) * | 2007-10-15 | 2008-07-30 | 中国科学院工程热物理研究所 | Internal groove self-lubricating movable static pressure coupled air bearing |
| CN201373026Y (en) * | 2008-12-04 | 2009-12-30 | 北京中科信电子装备有限公司 | Vacuumizing aerostatic radial bearing |
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| Publication number | Publication date |
|---|---|
| CN102011800B (en) | 2012-07-04 |
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