CN1632332A - Mixed type helical groove dynamical and static pressure gas composite ball bearing - Google Patents
Mixed type helical groove dynamical and static pressure gas composite ball bearing Download PDFInfo
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- CN1632332A CN1632332A CN 200510009633 CN200510009633A CN1632332A CN 1632332 A CN1632332 A CN 1632332A CN 200510009633 CN200510009633 CN 200510009633 CN 200510009633 A CN200510009633 A CN 200510009633A CN 1632332 A CN1632332 A CN 1632332A
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Abstract
The invention relates to a mixed type helical groove dynamical and static pressure gas composite thrust bearing, which is high speed, high rigidity, big load and ultraprecise. On the working surface of the thrust bearing, static pressure air-floating air feed point distributed at two sides of the circle respectively opens herringbone dynamical pressure groove. The bearing capacity of the bearing is improved more than 30% compared to the traditional static pressure air-floating bearing in the circumstance of not adding the gas consumption of the air-floating bearing and the bearing rigidity is improved more than 15% compared to the static pressure air-floating bearing.
Description
Technical field
The present invention relates to a kind of dynamical and static pressure gas composite sphere bearing, especially ultraprecise, ultra high speed gas spheric bearing.
Background technique
At present, the static pressure gas spheric bearing that uses in the engineering, only utilize static pressure air-bearing to come bearing load and rigidity is provided, usually run in the middle of practical application that bearing capacity is low, rigidity is little, the problem of poor anti jamming capability, the static pressure gas spheric bearing that uses in the engineering do not make full use of bearing capacity that the dynamic pressure effect of high rotating speed or linear velocity can provide and rigidity (the 7th piece-gas bearing .2002 of " mechanical design handbook " second volume the 4th edition, Chemical Industry Press.; The 40 piece of chapter 9 in " mechanical design handbook " Volume Four-gas bearing .2003 second edition, China Machine Press .).
Summary of the invention
The objective of the invention is to overcome the deficiency that exists in the above-mentioned technology, the mixed type helical groove dynamical and static pressure gas composite ball bearing of a kind of high rigidity, high bearing capacity is provided.
For achieving the above object, the technical solution used in the present invention is on the spherical bearing working surface, and static pressure air-bearing air feed point distribution circle both sides have helical dynamic pressure groove.
The helical dynamic pressure groove of described static pressure air-bearing air feed point distribution circle both sides communicates or is obstructed.
The helical dynamic pressure groove outside of described static pressure air-bearing air feed point distribution circle both sides has envelope gas limit or does not have envelope gas limit.Be that the helical dynamic pressure groove outside does not have that envelope gas limit is that the helical dynamic pressure groove outside has envelope gas limit but the width on envelope gas limit is 0 special case.
The circumferencial direction of described spherical bearing working surface upper edge static pressure air-bearing air feed point distribution circle has or does not have a plurality of balancing slits that communicate with both sides helical dynamic pressure groove.
Described static pressure air-bearing air feed point is single layout or double layout.
Described static pressure air-bearing air feed point is hole or slit or the hole of filling with the material that has pore.
Described static pressure air-bearing air feed point and helical dynamic pressure groove on the same working surface or with the corresponding working surface of working surface that has helical dynamic pressure groove on.
The spiral chute dynamic and static pressure composite gas spheric bearing of the static pressure air-bearing air feed point of described double layout, the helical dynamic pressure groove direction of static pressure air-bearing air feed point both sides is identical or opposite.
The spiral chute dynamic and static pressure composite gas spheric bearing of the static pressure air-bearing air feed point of described double layout, the helical dynamic pressure groove of 2 row's static pressure air-bearing air feed points communicates or is obstructed.
Advantage of the present invention
(1) bearing load carrying capacity improves more than 30% than traditional static pressure air-bearing spherical bearing.
(2) bearing rigidity improves more than 15% than traditional static pressure air-bearing spherical bearing.
Description of drawings
Accompanying drawing 1 is that the static pressure air-bearing air feed is put 3 distribution circle both sides and had the helical dynamic pressure groove 2 that does not communicate on spherical bearing working surface 1, and helical dynamic pressure groove 2 outsides have the inner ball surface schematic representation on envelope gas limit 4.
Accompanying drawing 2 is that the static pressure air-bearing air feed is put 7 distribution circle both sides and had the helical dynamic pressure groove 6 that does not communicate on spherical bearing working surface 5, and helical dynamic pressure groove 6 outsides have the outer spherical surface schematic representation on envelope gas limit 8.
Accompanying drawing 3 is that the static pressure air-bearing air feed is put 11 distribution circle both sides and had the helical dynamic pressure groove 10 that communicates on spherical bearing working surface 9, and helical dynamic pressure groove 10 outsides have the inner ball surface schematic representation on envelope gas limit 12.
Accompanying drawing 4 is that the static pressure air-bearing air feed is put 15 distribution circle both sides and had the helical dynamic pressure groove 14 that communicates on spherical bearing working surface 13, and helical dynamic pressure groove 14 outsides have the outer spherical surface schematic representation on envelope gas limit 16.
Accompanying drawing 5 is that the static pressure air-bearing air feed is put 19 double layouts on the spherical bearing working surface 17, and the static pressure air-bearing air feed is put 19 distribution circle both sides and had the helical dynamic pressure groove 18 that does not communicate, and helical dynamic pressure groove 18 outsides have the inner ball surface schematic representation on envelope gas limit 20.
Accompanying drawing 9 is that the static pressure air-bearing air feed is put 35 double layouts on the spherical bearing working surface 33, the static pressure air-bearing air feed is put 35 distribution circle both sides, and to have the helical dynamic pressure groove 34 and the direction that communicate identical, and helical dynamic pressure groove 34 outsides have the inner ball surface schematic representation on envelope gas limit 36.
Accompanying drawing 10 is that the static pressure air-bearing air feed is put 39 double layouts on the spherical bearing working surface 37, the static pressure air-bearing air feed is put 39 distribution circle both sides, and to have the helical dynamic pressure groove 38 and the direction that communicate identical, and helical dynamic pressure groove 38 outsides have the outer spherical surface schematic representation on envelope gas limit 40.
Accompanying drawing 11 is that the static pressure air-bearing air feed is put 43 double layouts on the spherical bearing working surface 41, the static pressure air-bearing air feed is put 43 distribution circle both sides, and to have the helical dynamic pressure groove 42 and the direction that do not communicate identical, the contiguous helical dynamic pressure groove 42 of 2 row's static pressure air-bearing air feed points 43 communicates, and helical dynamic pressure groove 42 outsides have the inner ball surface schematic representation on envelope gas limit 44.
Accompanying drawing 12 is that the static pressure air-bearing air feed is put 47 double layouts on the spherical bearing working surface 45, the static pressure air-bearing air feed is put 47 distribution circle both sides, and to have the helical dynamic pressure groove 46 and the direction that do not communicate identical, the contiguous helical dynamic pressure groove 46 of 2 row's static pressure air-bearing air feed points 47 communicates, and helical dynamic pressure groove 46 outsides have the outer spherical surface schematic representation on envelope gas limit 48.
Accompanying drawing 17 is that the static pressure air-bearing air feed is put 70 double layouts on the described spherical bearing working surface 68, the circumferencial direction of putting 70 distribution circles along the static pressure air-bearing air feed has a plurality of balancing slits 71 that communicate with both sides helical dynamic pressure groove 69, and helical dynamic pressure groove 69 outsides have the inner ball surface schematic representation on envelope gas limit 72.
Accompanying drawing 18 is that the static pressure air-bearing air feed is put 75 double layouts on the described spherical bearing working surface 73, the circumferencial direction of putting 75 distribution circles along the static pressure air-bearing air feed has a plurality of balancing slits 76 that communicate with both sides helical dynamic pressure groove 74, and helical dynamic pressure groove 74 outsides have the outer spherical surface schematic representation on envelope gas limit 77.
Accompanying drawing 19 is described static pressure air-bearing air feed point 80 and the schematic representation of helical dynamic pressure groove 79 on same working surface 78.
Accompanying drawing 20 are described static pressure air-bearing air feed points 83 with the working surface 81 corresponding working surfaces that have helical dynamic pressure groove 82 on schematic representation.
Accompanying drawing 21 is schematic representation that described static pressure air-bearing air feed point 84 is holes.
Accompanying drawing 22 is schematic representation that described static pressure air-bearing air feed point 85 is slits.
Accompanying drawing 23 is that described static pressure air-bearing air feed point 86 is the schematic representation with the hole of material 87 fillings that have pore.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are described in further detail.
By Fig. 1-Figure 23 as can be known, the present invention is: on the spherical bearing working surface, static pressure air-bearing air feed point distribution circle both sides have helical dynamic pressure groove.
The helical dynamic pressure groove of described static pressure air-bearing air feed point distribution circle both sides communicates or is obstructed.
The helical dynamic pressure groove outside of described static pressure air-bearing air feed point distribution circle both sides has envelope gas limit or does not have envelope gas limit.Be that the helical dynamic pressure groove outside does not have that envelope gas limit is that the helical dynamic pressure groove outside has envelope gas limit but the width on envelope gas limit is 0 special case.
The circumferencial direction of described spherical bearing working surface upper edge static pressure air-bearing air feed point distribution circle has or does not have a plurality of balancing slits that communicate with both sides helical dynamic pressure groove.
Described static pressure air-bearing air feed point is single layout or double layout.
Described static pressure air-bearing air feed point is hole or slit or the hole of filling with the material that has pore.
Described static pressure air-bearing air feed point and helical dynamic pressure groove on the same working surface or with the corresponding working surface of working surface that has helical dynamic pressure groove on.
The spiral chute dynamic and static pressure composite gas spheric bearing of the static pressure air-bearing air feed point of described double layout, the helical dynamic pressure groove direction of static pressure air-bearing air feed point both sides is identical or opposite.
The spiral chute dynamic and static pressure composite gas spheric bearing of the static pressure air-bearing air feed point of described double layout, the helical dynamic pressure groove of 2 row's static pressure air-bearing air feed points communicates or is obstructed.
Specific embodiment:
Embodiment 1:
As shown in Figure 1, the static pressure air-bearing air feed is put 3 distribution circle both sides and is had the helical dynamic pressure groove 2 that does not communicate on spherical bearing working surface 1, and helical dynamic pressure groove 2 outsides have the inner ball surface on envelope gas limit 4, are equipped with smooth outer spherical surface.
Embodiment 2:
As shown in Figure 2, the static pressure air-bearing air feed is put 7 distribution circle both sides and is had the helical dynamic pressure groove 6 that does not communicate on spherical bearing working surface 5, and helical dynamic pressure groove 6 outsides have the outer spherical surface on envelope gas limit 8, are equipped with smooth inner ball surface.
Embodiment 3:
As shown in Figure 3, the static pressure air-bearing air feed is put 11 distribution circle both sides and is had the helical dynamic pressure groove 10 that communicates on spherical bearing working surface 9, and helical dynamic pressure groove 10 outsides have the inner ball surface on envelope gas limit 12, are equipped with smooth outer spherical surface.
Embodiment 4:
As shown in Figure 4, the static pressure air-bearing air feed is put 15 distribution circle both sides and is had the helical dynamic pressure groove 14 that communicates on spherical bearing working surface 13, and helical dynamic pressure groove 14 outsides have the outer spherical surface on envelope gas limit 16, are equipped with smooth inner ball surface.
Embodiment 5:
As shown in Figure 5, the static pressure air-bearing air feed is put 19 double layouts on the spherical bearing working surface 17, the static pressure air-bearing air feed is put 19 distribution circle both sides and is had the helical dynamic pressure groove 18 that does not communicate, and helical dynamic pressure groove 18 outsides have the inner ball surface on envelope gas limit 20, are equipped with smooth outer spherical surface.
Embodiment 6:
As shown in Figure 6, the static pressure air-bearing air feed is put 23 double layouts on the spherical bearing working surface 21, the static pressure air-bearing air feed is put 23 distribution circle both sides and is had the helical dynamic pressure groove 22 that does not communicate, and helical dynamic pressure groove 22 outsides have the outer spherical surface on envelope gas limit 24, are equipped with smooth inner ball surface.
Embodiment 7:
As shown in Figure 7, the static pressure air-bearing air feed is put 27 double layouts on the spherical bearing working surface 25, the static pressure air-bearing air feed is put 27 distribution circle both sides, and to have the helical dynamic pressure groove 26 and the direction that do not communicate identical, helical dynamic pressure groove 26 outsides have the inner ball surface on envelope gas limit 28, are equipped with smooth outer spherical surface.
Embodiment 8:
As shown in Figure 8, the static pressure air-bearing air feed is put 31 double layouts on the spherical bearing working surface 29, the static pressure air-bearing air feed is put 31 distribution circle both sides, and to have the helical dynamic pressure groove 30 and the direction that do not communicate identical, helical dynamic pressure groove 30 outsides have the outer spherical surface on envelope gas limit 32, are equipped with smooth inner ball surface.
Embodiment 9:
As shown in Figure 9, the static pressure air-bearing air feed is put 35 double layouts on the spherical bearing working surface 33, the static pressure air-bearing air feed is put 35 distribution circle both sides, and to have the helical dynamic pressure groove 34 and the direction that communicate identical, helical dynamic pressure groove 34 outsides have the inner ball surface on envelope gas limit 36, are equipped with smooth outer spherical surface.
Embodiment 10:
As shown in Figure 10, the static pressure air-bearing air feed is put 39 double layouts on the spherical bearing working surface 37, the static pressure air-bearing air feed is put 39 distribution circle both sides, and to have the helical dynamic pressure groove 38 and the direction that communicate identical, helical dynamic pressure groove 38 outsides have the outer spherical surface on envelope gas limit 40, are equipped with smooth inner ball surface.
Embodiment 11:
As shown in Figure 11, the static pressure air-bearing air feed is put 43 double layouts on the spherical bearing working surface 41, the static pressure air-bearing air feed is put 43 distribution circle both sides, and to have the helical dynamic pressure groove 42 and the direction that do not communicate identical, the contiguous helical dynamic pressure groove 42 of 2 row's static pressure air-bearing air feed points 43 communicates, helical dynamic pressure groove 42 outsides have the inner ball surface on envelope gas limit 44, are equipped with smooth outer spherical surface.
Embodiment 12:
As shown in Figure 12, the static pressure air-bearing air feed is put 47 double layouts on the spherical bearing working surface 45, the static pressure air-bearing air feed is put 47 distribution circle both sides, and to have the helical dynamic pressure groove 46 and the direction that do not communicate identical, the contiguous helical dynamic pressure groove 46 of 2 row's static pressure air-bearing air feed points 47 communicates, helical dynamic pressure groove 46 outsides have the outer spherical surface on envelope gas limit 48, are equipped with smooth inner ball surface.
Embodiment 13:
As shown in Figure 13, the static pressure air-bearing air feed is put 51 double layouts on the spherical bearing working surface 49, the static pressure air-bearing air feed is put 51 distribution circle both sides, and to have the helical dynamic pressure groove 50 and the direction that communicate identical, the helical dynamic pressure groove 50 of 2 row's static pressure air-bearing air feed points 51 communicates, helical dynamic pressure groove 50 outsides have the inner ball surface on envelope gas limit 52, are equipped with smooth outer spherical surface.
Embodiment 14:
As shown in Figure 14, the static pressure air-bearing air feed is put 56 double layouts on the spherical bearing working surface 54, the static pressure air-bearing air feed is put 56 distribution circle both sides, and to have the helical dynamic pressure groove 55 and the direction that communicate identical, the helical dynamic pressure groove 55 of 2 row's static pressure air-bearing air feed points 56 communicates, helical dynamic pressure groove 55 outsides have the outer spherical surface on envelope gas limit 57, are equipped with smooth inner ball surface.
Embodiment 15:
As shown in Figure 15, the static pressure air-bearing air feed is put 60 single layouts on the described spherical bearing working surface 58, the circumferencial direction of putting 60 distribution circles along the static pressure air-bearing air feed has a plurality of balancing slits 61 that communicate with both sides helical dynamic pressure groove 59, helical dynamic pressure groove 59 outsides have the inner ball surface on envelope gas limit 62, are equipped with smooth outer spherical surface.
Embodiment 16:
As shown in Figure 16, the static pressure air-bearing air feed is put 65 single layouts on the described spherical bearing working surface 63, the circumferencial direction of putting 65 distribution circles along the static pressure air-bearing air feed has a plurality of balancing slits 66 that communicate with both sides helical dynamic pressure groove 64, helical dynamic pressure groove 64 outsides have the outer spherical surface on envelope gas limit 67, are equipped with smooth inner ball surface.
Embodiment 17:
As shown in Figure 17, the static pressure air-bearing air feed is put 70 double layouts on the described spherical bearing working surface 68, the circumferencial direction of putting 70 distribution circles along the static pressure air-bearing air feed has a plurality of balancing slits 71 that communicate with both sides helical dynamic pressure groove 69, helical dynamic pressure groove 69 outsides have the inner ball surface on envelope gas limit 72, are equipped with smooth outer spherical surface.
Embodiment 18:
As shown in Figure 18, the static pressure air-bearing air feed is put 75 double layouts on the described spherical bearing working surface 73, the circumferencial direction of putting 75 distribution circles along the static pressure air-bearing air feed has a plurality of balancing slits 76 that communicate with both sides helical dynamic pressure groove 74, helical dynamic pressure groove 74 outsides have the outer spherical surface on envelope gas limit 77, are equipped with smooth inner ball surface.
Claims (9)
1. spiral chute dynamic and static pressure composite gas spheric bearing, it is characterized in that: on the spherical bearing working surface, static pressure air-bearing air feed point distribution circle both sides have helical dynamic pressure groove.
2. as claim 1 described spiral chute dynamic and static pressure composite gas spheric bearing, it is characterized in that: the helical dynamic pressure groove of described static pressure air-bearing air feed point distribution circle both sides communicates or is obstructed.
3. as claim 1 described spiral chute dynamic and static pressure composite gas spheric bearing, it is characterized in that: the helical dynamic pressure groove outside of described static pressure air-bearing air feed point distribution circle both sides has envelope gas limit or does not have envelope gas limit.
4. as claim 1 described spiral chute dynamic and static pressure composite gas spheric bearing, it is characterized in that: the circumferencial direction of described spherical bearing working surface upper edge static pressure air-bearing air feed point distribution circle has or does not have a plurality of balancing slits that communicate with both sides helical dynamic pressure groove.
5. as claim 1 described spiral chute dynamic and static pressure composite gas spheric bearing, it is characterized in that: described static pressure air-bearing air feed point is single layout or double layout.
6. as claim 1 described spiral chute dynamic and static pressure composite gas spheric bearing, it is characterized in that: described static pressure air-bearing air feed point is hole or slit or the hole of filling with the material that has pore.
7. as claim 1 described spiral chute dynamic and static pressure composite gas spheric bearing, it is characterized in that: described static pressure air-bearing air feed point and helical dynamic pressure groove on the same working surface or with the corresponding working surface of working surface that has helical dynamic pressure groove on.
8. as the spiral chute dynamic and static pressure composite gas spheric bearing of the static pressure air-bearing air feed point of claim 5 described double layouts, it is characterized in that: the helical dynamic pressure groove direction of described static pressure air-bearing air feed point both sides is identical or opposite.
9. as the spiral chute dynamic and static pressure composite gas spheric bearing of the static pressure air-bearing air feed point of claim 5 described double layouts, it is characterized in that: the helical dynamic pressure grooves of described 2 row's static pressure air-bearing air feed points communicate or are obstructed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510009633 CN1632332A (en) | 2005-01-18 | 2005-01-18 | Mixed type helical groove dynamical and static pressure gas composite ball bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510009633 CN1632332A (en) | 2005-01-18 | 2005-01-18 | Mixed type helical groove dynamical and static pressure gas composite ball bearing |
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| Publication Number | Publication Date |
|---|---|
| CN1632332A true CN1632332A (en) | 2005-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510009633 Pending CN1632332A (en) | 2005-01-18 | 2005-01-18 | Mixed type helical groove dynamical and static pressure gas composite ball bearing |
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|---|---|
| CN (1) | CN1632332A (en) |
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2005
- 2005-01-18 CN CN 200510009633 patent/CN1632332A/en active Pending
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Owner name: HARBIN INSTITUTE OF TECHNOLOGY Free format text: FORMER OWNER: HARBIN INSTITUTE OF TECHNOLOGY; YAO SHAOMING Effective date: 20060929 |
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Effective date of registration: 20060929 Address after: 150001 No. 92 West straight street, Harbin, Heilongjiang Applicant after: Harbin Institute of Technology Address before: 150001 No. 92 West straight street, Harbin, Heilongjiang Applicant before: Harbin Institute of Technology Co-applicant before: Yao Shaoming |
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