CN103899645B - Staged composite throttling static pressure gas spheric bearing - Google Patents
Staged composite throttling static pressure gas spheric bearing Download PDFInfo
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- CN103899645B CN103899645B CN201410088002.0A CN201410088002A CN103899645B CN 103899645 B CN103899645 B CN 103899645B CN 201410088002 A CN201410088002 A CN 201410088002A CN 103899645 B CN103899645 B CN 103899645B
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- static pressure
- bearing
- throttling
- pressure air
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Abstract
It is an object of the invention to provide staged composite throttling static pressure gas spheric bearing, including work surface, work surface arranges static pressure air-bearing supply point, centered by static pressure air-bearing supply point, stepped throttling shallow cavity is set, externally to static pressure air-bearing supply point direction, the stepped throttling shallow cavity degree of depth incrementally increases, and the stepped throttling shallow cavity of adjacent static pressure air-bearing supply point is not communicated with.Bearing load carrying capacity of the present invention improves more than 3 times than traditional static pressure gas spheric bearing, and bearing rigidity improves more than 3 times than traditional static pressure gas spheric bearing, and compared with traditional gas bearing, the leveling effect of locating surface mismachining tolerance is further enhanced by air film.
Description
Technical field
The present invention relates to a kind of bearing, specifically spherical bearing.
Background technology
At present, the static pressure gas spheric bearing used in engineering, comes just with outer throttling static pressure air-bearing or surface throttle
Bear load and rigidity is provided, in the middle of reality application, being frequently run onto that bearing capacity is low, rigidity is little, the asking of poor anti jamming capability
Topic.The static pressure gas spheric bearing of these kinds does not make full use of composite throttling effect, thus is not provided that big carrying energy
Power and rigidity, and poor anti jamming capability, rotating accuracy be difficult to improve；Patent (US6164827A) proposes has surface Wei Gou
The air floating structure of groove, this structure only just works under little air-film thickness, the most notable to improving air supporting block combination property
Effect；Patent (TOHKEMY 2009-209962A) proposes the air-float guide rail that the outlet of a kind of reducer improves, but its improved confinement
Area only accounts for makes the 6.25% of area, it is impossible to play surface throttle effect；Patent (CN16517831A) discloses a kind of double special
Levy surface throttle spherical bearing, have employed the deep models such as bicharacteristic based on tradition etching process, it is impossible to play best surface throttling
Effect.
Summary of the invention
It is an object of the invention to provide the staged composite throttling static pressure gas spheric of high rigidity, high bearing capacity
Hold.
The object of the present invention is achieved like this:
Staged composite throttling static pressure gas spheric bearing of the present invention, is characterized in that: include work surface, sets on work surface
Put static pressure air-bearing supply point, stepped throttling shallow cavity is set centered by static pressure air-bearing supply point, supplies externally to static pressure air-bearing
Gas point direction, the stepped throttling shallow cavity degree of depth incrementally increases, and the stepped throttling shallow cavity of adjacent static pressure air-bearing supply point is not communicated with.
The present invention can also include:
1, described work surface is spherical outside surface or Internal Spherical Surface.
2, the static pressure air-bearing supply the most single layout of point or double layout.
3, stepped throttling shallow cavity be projected as ellipse, sector or a combination thereof.
4, static pressure air-bearing supply point is to have the hole of throttling action, the hole filled with pore material or gap.
Present invention have an advantage that
(1) bearing load carrying capacity improves more than 3 times than traditional static pressure gas spheric bearing.
(2) bearing rigidity improves more than 3 times than traditional static pressure gas spheric bearing.
(3) compared with traditional gas bearing, the leveling effect of locating surface mismachining tolerance is further enhanced by air film.
Accompanying drawing explanation
Fig. 1 be work surface be Internal Spherical Surface, there is the schematic diagram of the stepped throttling shallow cavity section of two-stage step；
Fig. 2 be work surface be Internal Spherical Surface, there is the schematic diagram of the stepped throttling shallow cavity section of 3 grades of steps；
Fig. 3 be work surface be spherical outside surface, there is the schematic diagram of the stepped throttling shallow cavity section of two-stage step；
Fig. 4 be work surface be spherical outside surface, there is the schematic diagram of the stepped throttling shallow cavity section of 3 grades of steps；
Fig. 5 is the static pressure air-bearing supply single layout of point, is machined with sector-sector combination centered by static pressure air-bearing supply point
The schematic diagram of two-stage stepped throttling shallow cavity；
Fig. 6 is the static pressure air-bearing supply single layout of point, is machined with sector-sector-fan centered by static pressure air-bearing supply point
The schematic diagram of 3 grades of stepped throttling shallow cavity of shape combination；
Fig. 7 is the static pressure air-bearing supply single layout of point, is machined with ellipse-ellipse centered by static pressure air-bearing supply point
The schematic diagram of the two-stage stepped throttling shallow cavity of combination；
Fig. 8 is the static pressure air-bearing supply single layout of point, is machined with ellipse-ellipse centered by static pressure air-bearing supply point
The schematic diagram of 3 grades of stepped throttling shallow cavity of shape-ellipse combination；
Fig. 9 is the static pressure air-bearing supply single layout of point, is machined with sector-ellipse group centered by static pressure air-bearing supply point
The schematic diagram of the two-stage stepped throttling shallow cavity closed；
Figure 10 is the static pressure air-bearing supply single layout of point, is machined with sector-sector-ellipse centered by static pressure air-bearing supply point
The schematic diagram of 3 grades of stepped throttling shallow cavity of circular combination；
Figure 11 be static pressure air-bearing supply point a single layout, by static pressure air-bearing supply point centered by be machined with sector-ellipse-
The schematic diagram of 3 grades of stepped throttling shallow cavity of oval combination；
Figure 12 is the static pressure air-bearing supply double layout of point, is machined with sector-sector group centered by static pressure air-bearing supply point
The schematic diagram of the two-stage stepped throttling shallow cavity closed；
Figure 13 is the static pressure air-bearing supply double layout of point, is machined with sector-sector-fan centered by static pressure air-bearing supply point
The schematic diagram of 3 grades of stepped throttling shallow cavity of shape combination；
Figure 14 is the static pressure air-bearing supply double layout of point, is machined with ellipse-ellipse centered by static pressure air-bearing supply point
The schematic diagram of the two-stage stepped throttling shallow cavity of shape combination；
Figure 15 is the static pressure air-bearing supply double layout of point, is machined with ellipse-ellipse centered by static pressure air-bearing supply point
The schematic diagram of 3 grades of stepped throttling shallow cavity of shape-ellipse combination；
Figure 16 is the static pressure air-bearing supply double layout of point, is machined with sector-ellipse centered by static pressure air-bearing supply point
The schematic diagram of the two-stage stepped throttling shallow cavity of combination；
Figure 17 is the static pressure air-bearing supply double layout of point, is machined with sector-sector-ellipse centered by static pressure air-bearing supply point
The schematic diagram of 3 grades of stepped throttling shallow cavity of circular combination；
Figure 18 be static pressure air-bearing supply point a double layout, by static pressure air-bearing supply point centered by be machined with sector-ellipse-
The schematic diagram of 3 grades of stepped throttling shallow cavity of oval combination；
Figure 19 is that static pressure air-bearing supply point is for having the schematic diagram in the hole of throttle effect；
Figure 20 is the schematic diagram that static pressure air-bearing supply point is gap；
Figure 21 is the schematic diagram in the static pressure air-bearing supply point hole for filling with the material with pore.
Detailed description of the invention
Illustrate below in conjunction with the accompanying drawings and the present invention be described in more detail:
According to Fig. 1-Figure 21, the present invention be static pressure gas spheric bearing work surface 10,13,16,18,20,22,24,26,
28, on 30,32,34,36,38, be machined with centered by static pressure air-bearing supply point 3 stepped throttling shallow cavity 11,14,17,19,
21,23,25,27,29,31,33,35,37,39, externally to the static pressure air-bearing supply point 3 stepped throttling in direction shallow cavity 11,14,
17,19,21,23,25,27,29,31,33,35,37,39 degree of depth incrementally increase, the stepped joint of adjacent static pressure air-bearing supply point 3
Stream shallow cavity 11,14,17,19,21,23,25,27,29,31,33,35,37,39 is not communicated with.
Work surface can be spherical outside surface 6,8.
Work surface can also be Internal Spherical Surface 1,4.
Static pressure air-bearing supply point 3 can single layout 10,13,16,18,20,22,24, it is also possible to double layout 26,28,
30、32、34、36、38。
Stepped throttling shallow cavity be projected as oval 17,19,31,33, fan-shaped 11,14,27,29 or a combination thereof 21,23,
25、35、37、39。
Static pressure air-bearing supply point 40 can be the hole 41 with throttling action.
Static pressure air-bearing supply point can be gap 42.
Static pressure air-bearing supply point 43 can be with the hole filled with pore material 44.
Embodiment 1:
As shown in Figure 1, in spherical bearing, spherical work face 1 is projected as work surface 10(as shown in Figure 5), such interior
Match composition static pressure gas spheric bearing with smooth spherical outside surface in spherical work face 1, and static pressure air-bearing supply point 3 can use to be had
The hole 41 of throttling action, gap 42 or the hole filled with pore material 44.
Embodiment 2:
As shown in Figure 3, spherical bearing outer spherical work surface 6 be projected as work surface 10(as shown in Figure 5), such outside
Match composition static pressure gas spheric bearing with smooth Internal Spherical Surface in spherical work face 6, and static pressure air-bearing supply point 3 can use to be had
The hole 41 of throttling action, gap 42 or the hole filled with pore material 44.
Embodiment 3:
As shown in Figure 2, in spherical bearing, spherical work face 4 is projected as work surface 13(as shown in Figure 6), such interior
Match composition static pressure gas spheric bearing with smooth spherical outside surface in spherical work face 4, and static pressure air-bearing supply point 3 can use to be had
The hole 41 of throttling action, gap 42 or the hole filled with pore material 44.
Embodiment 4:
As shown in Figure 4, spherical bearing outer spherical work surface 8 be projected as work surface 13(as shown in Figure 6), such outside
Match composition static pressure gas spheric bearing with smooth Internal Spherical Surface in spherical work face 8, and static pressure air-bearing supply point 3 can use to be had
The hole 41 of throttling action, gap 42 or the hole filled with pore material 44.
Embodiment 5:
As shown in Figure 1, in spherical bearing, spherical work face 1 is projected as work surface 16(as shown in Figure 7), such interior
Match composition static pressure gas spheric bearing with smooth spherical outside surface in spherical work face 1, and static pressure air-bearing supply point 3 can use to be had
The hole 41 of throttling action, gap 42 or the hole filled with pore material 44.
Embodiment 6:
As shown in Figure 3, spherical bearing outer spherical work surface 6 be projected as work surface 16(as shown in Figure 7), such outside
Match composition static pressure gas spheric bearing with smooth Internal Spherical Surface in spherical work face 6, and static pressure air-bearing supply point 3 can use to be had
The hole 41 of throttling action, gap 42 or the hole filled with pore material 44.
Embodiment 7:
As shown in Figure 2, in spherical bearing, spherical work face 4 is projected as work surface 18(as shown in Figure 8), such interior
Match composition static pressure gas spheric bearing with smooth spherical outside surface in spherical work face 4, and static pressure air-bearing supply point 3 can use to be had
The hole 41 of throttling action, gap 42 or the hole filled with pore material 44.
Embodiment 8:
As shown in Figure 4, spherical bearing outer spherical work surface 8 be projected as work surface 18(as shown in Figure 8), such outside
Match composition static pressure gas spheric bearing with smooth Internal Spherical Surface in spherical work face 8, and static pressure air-bearing supply point 3 can use to be had
The hole 41 of throttling action, gap 42 or the hole filled with pore material 44.
Embodiment 9:
As shown in Figure 1, in spherical bearing, spherical work face 1 is projected as work surface 20(as shown in Figure 9), such interior
Match composition static pressure gas spheric bearing with smooth spherical outside surface in spherical work face 1, and static pressure air-bearing supply point 3 can use to be had
The hole 41 of throttling action, gap 42 or the hole filled with pore material 44.
Embodiment 10:
As shown in Figure 3, spherical bearing outer spherical work surface 6 be projected as work surface 20(as shown in Figure 9), such outside
Match composition static pressure gas spheric bearing with smooth Internal Spherical Surface in spherical work face 6, and static pressure air-bearing supply point 3 can use to be had
The hole 41 of throttling action, gap 42 or the hole filled with pore material 44.
Embodiment 11:
As shown in Figure 2, in spherical bearing, spherical work face 4 is projected as work surface 22(as shown in Figure 10), such
Match composition static pressure gas spheric bearing with smooth spherical outside surface in interior spherical work face 4, and static pressure air-bearing supply point 3 can use tool
There are the hole 41 of throttling action, gap 42 or the hole filled with pore material 44.
Embodiment 12:
As shown in Figure 4, spherical bearing outer spherical work surface 8 be projected as work surface 22(as shown in Figure 10), such
Outer spherical work surface 8 matches with smooth Internal Spherical Surface composition static pressure gas spheric bearing, and static pressure air-bearing supply point 3 can use tool
There are the hole 41 of throttling action, gap 42 or the hole filled with pore material 44.
Embodiment 13:
As shown in Figure 2, in spherical bearing, spherical work face 4 is projected as work surface 24(as shown in figure 11), such
Match composition static pressure gas spheric bearing with smooth spherical outside surface in interior spherical work face 4, and static pressure air-bearing supply point 3 can use tool
There are the hole 41 of throttling action, gap 42 or the hole filled with pore material 44.
Embodiment 14:
As shown in Figure 4, spherical bearing outer spherical work surface 8 be projected as work surface 24(as shown in figure 11), such
Outer spherical work surface 8 matches with smooth Internal Spherical Surface composition static pressure gas spheric bearing, and static pressure air-bearing supply point 3 can use tool
There are the hole 41 of throttling action, gap 42 or the hole filled with pore material 44.
Embodiment 15:
As shown in Figure 1, in spherical bearing, spherical work face 1 is projected as work surface 26(as shown in figure 12), such
Match composition static pressure gas spheric bearing with smooth spherical outside surface in interior spherical work face 1, and static pressure air-bearing supply point 3 can use tool
There are the hole 41 of throttling action, gap 42 or the hole filled with pore material 44.
Embodiment 16:
As shown in Figure 3, spherical bearing outer spherical work surface 6 be projected as work surface 26(as shown in figure 12), such
Outer spherical work surface 6 matches with smooth Internal Spherical Surface composition static pressure gas spheric bearing, and static pressure air-bearing supply point 3 can use tool
There are the hole 41 of throttling action, gap 42 or the hole filled with pore material 44.
Embodiment 17:
As shown in Figure 2, in spherical bearing, spherical work face 4 is projected as work surface 28(as shown in figure 13), such
Match composition static pressure gas spheric bearing with smooth spherical outside surface in interior spherical work face 4, and static pressure air-bearing supply point 3 can use tool
There are the hole 41 of throttling action, gap 42 or the hole filled with pore material 44.
Embodiment 18:
As shown in Figure 4, spherical bearing outer spherical work surface 8 be projected as work surface 28(as shown in figure 13), such
Outer spherical work surface matches with smooth Internal Spherical Surface composition static pressure gas spheric bearing, and static pressure air-bearing supply point 3 can use tool
There are the hole 41 of throttling action, gap 42 or the hole filled with pore material 44.
Embodiment 19:
As shown in Figure 1, in spherical bearing, spherical work face 1 is projected as work surface 30(as shown in figure 14), such
Match composition static pressure gas spheric bearing with smooth spherical outside surface in interior spherical work face 1, and static pressure air-bearing supply point 3 can use tool
There are the hole 41 of throttling action, gap 42 or the hole filled with pore material 44.
Embodiment 20:
As shown in Figure 3, spherical bearing outer spherical work surface 6 be projected as work surface 30(as shown in figure 14), such
Outer spherical work surface 6 matches with smooth Internal Spherical Surface composition static pressure gas spheric bearing, and static pressure air-bearing supply point 3 can use tool
There are the hole 41 of throttling action, gap 42 or the hole filled with pore material 44.
Embodiment 21:
As shown in Figure 2, in spherical bearing, spherical work face 4 is projected as work surface 32(as shown in figure 15), such
Match composition static pressure gas spheric bearing with smooth spherical outside surface in interior spherical work face 4, and static pressure air-bearing supply point 3 can use tool
There are the hole 41 of throttling action, gap 42 or the hole filled with pore material 44.
Embodiment 22:
As shown in Figure 4, spherical bearing outer spherical work surface 8 be projected as work surface 32(as shown in figure 15), such
Outer spherical work surface 8 matches with smooth Internal Spherical Surface composition static pressure gas spheric bearing, and static pressure air-bearing supply point 3 can use tool
There are the hole 41 of throttling action, gap 42 or the hole filled with pore material 44.
Embodiment 23:
As shown in Figure 1, in spherical bearing, spherical work face 1 is projected as work surface 34(as shown in figure 16), such
Match composition static pressure gas spheric bearing with smooth spherical outside surface in interior spherical work face 1, and static pressure air-bearing supply point 3 can use tool
There are the hole 41 of throttling action, gap 42 or the hole filled with pore material 44.
Embodiment 24:
As shown in Figure 3, spherical bearing outer spherical work surface 6 be projected as work surface 34(as shown in figure 16), such
Outer spherical work surface 6 matches with smooth Internal Spherical Surface composition static pressure gas spheric bearing, and static pressure air-bearing supply point 3 can use tool
There are the hole 41 of throttling action, gap 42 or the hole filled with pore material 44.
Embodiment 25:
As shown in Figure 2, in spherical bearing, spherical work face 4 is projected as work surface 36(as shown in figure 17), such
Match composition static pressure gas spheric bearing with smooth spherical outside surface in interior spherical work face 4, and static pressure air-bearing supply point 3 can use tool
There are the hole 41 of throttling action, gap 42 or the hole filled with pore material 44.
Embodiment 26:
As shown in Figure 4, spherical bearing outer spherical work surface 8 be projected as work surface 36(as shown in figure 17), such
Outer spherical work surface 8 matches with smooth Internal Spherical Surface composition static pressure gas spheric bearing, and static pressure air-bearing supply point 3 can use tool
There are the hole 41 of throttling action, gap 42 or the hole filled with pore material 44.
Embodiment 27:
As shown in Figure 2, in spherical bearing, spherical work face 4 is projected as work surface 38(as shown in figure 18), such
Match composition static pressure gas spheric bearing with smooth spherical outside surface in interior spherical work face 4, and static pressure air-bearing supply point 3 can use tool
There are the hole 41 of throttling action, gap 42 or the hole filled with pore material 44.
Embodiment 28:
As shown in Figure 4, spherical bearing outer spherical work surface 8 be projected as work surface 38(as shown in figure 18), such
Outer spherical work surface 8 matches with smooth Internal Spherical Surface composition static pressure gas spheric bearing, and static pressure air-bearing supply point 3 can use tool
There are the hole 41 of throttling action, gap 42 or the hole filled with pore material 44.
The hole 41 with throttling action refers mainly to the diameter throttling pore less than 0.3 millimeter；When hole diameter is more than 0.3 milli
Meter Shi, outer throttling action is obviously reduced；When hole diameter is more than 0.5 millimeter, outer throttling action disappears substantially.
The processing of stepped throttling shallow cavity can use mechanical processing method, etch and polishing etc..
Accompanying drawing only gives two-stage step and the building method of 3 grades of steps, is enough as a rule, for greatly
Type gas bearing can be according to stepped throttling shallow cavity more than the method 4 grades of steps of structure, in order to improve performance further.
Claims (9)
1. staged composite throttling static pressure gas spheric bearing, is characterized in that: include work surface, arranges static pressure gas on work surface
Floating supply point, arranges stepped throttling shallow cavity centered by static pressure air-bearing supply point, and stepped throttling shallow cavity supplies from static pressure air-bearing
Gas point direction expands step by step to direction, bearings face, and the stepped throttling shallow cavity of adjacent static pressure air-bearing supply point is not communicated with.
Staged composite throttling static pressure gas spheric bearing the most according to claim 1, is characterized in that: described work surface
For spherical outside surface or Internal Spherical Surface.
Staged composite throttling static pressure gas spheric bearing the most according to claim 1 and 2, is characterized in that: static pressure air-bearing
The supply the most single layout of point or double layout.
Staged composite throttling static pressure gas spheric bearing the most according to claim 1 and 2, is characterized in that: stepped joint
That flows shallow cavity is projected as ellipse, sector or a combination thereof.
Staged composite throttling static pressure gas spheric bearing the most according to claim 3, is characterized in that: stepped throttling is shallow
Chamber be projected as ellipse, sector or a combination thereof.
Staged composite throttling static pressure gas spheric bearing the most according to claim 1 and 2, is characterized in that: static pressure air-bearing
Supply point is to have the hole of throttling action, the hole filled with pore material or gap.
Staged composite throttling static pressure gas spheric bearing the most according to claim 3, is characterized in that: static pressure air-bearing supplies
Point is to have the hole of throttling action, the hole filled with pore material or gap.
Staged composite throttling static pressure gas spheric bearing the most according to claim 4, is characterized in that: static pressure air-bearing supplies
Point is to have the hole of throttling action, the hole filled with pore material or gap.
Staged composite throttling static pressure gas spheric bearing the most according to claim 5, is characterized in that: static pressure air-bearing supplies
Point is to have the hole of throttling action, the hole filled with pore material or gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410088002.0A CN103899645B (en) | 2014-03-12 | 2014-03-12 | Staged composite throttling static pressure gas spheric bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410088002.0A CN103899645B (en) | 2014-03-12 | 2014-03-12 | Staged composite throttling static pressure gas spheric bearing |
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| Publication Number | Publication Date |
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| CN103899645A CN103899645A (en) | 2014-07-02 |
| CN103899645B true CN103899645B (en) | 2016-11-23 |
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| CN201410088002.0A Expired - Fee Related CN103899645B (en) | 2014-03-12 | 2014-03-12 | Staged composite throttling static pressure gas spheric bearing |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3361677B2 (en) * | 1995-12-20 | 2003-01-07 | 東芝機械株式会社 | Hydrostatic bearing device |
| JP2001027240A (en) * | 1999-07-12 | 2001-01-30 | Hideo Nakajima | Static pressure porous bearing and manufacture thereof |
| JP4547652B2 (en) * | 2000-04-03 | 2010-09-22 | Ｓｍｃ株式会社 | Automatic alignment pressing device |
| JP4480960B2 (en) * | 2003-06-27 | 2010-06-16 | 東北パイオニア株式会社 | Support unit and moving table device and linear motion guide device using the support unit |
| CN1651781A (en) * | 2005-02-17 | 2005-08-10 | 哈尔滨工业大学 | Double characteristic composite throttling static pressure gas spherical bearing |
| JP5083706B2 (en) * | 2006-11-21 | 2012-11-28 | 日本電気硝子株式会社 | Bismuth-based glass composition and bismuth-based sealing material |
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