JPS5846257Y2 - Hydrostatic radial gas bearing unit - Google Patents
Hydrostatic radial gas bearing unitInfo
- Publication number
- JPS5846257Y2 JPS5846257Y2 JP3430079U JP3430079U JPS5846257Y2 JP S5846257 Y2 JPS5846257 Y2 JP S5846257Y2 JP 3430079 U JP3430079 U JP 3430079U JP 3430079 U JP3430079 U JP 3430079U JP S5846257 Y2 JPS5846257 Y2 JP S5846257Y2
- Authority
- JP
- Japan
- Prior art keywords
- static pressure
- pressure plate
- bearing
- radial gas
- hydrostatic radial
- 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.)
- Expired
Links
Landscapes
- Support Of The Bearing (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Description
【考案の詳細な説明】
この考案は静圧ラジアル気体軸受ユニット、とくに該軸
受を複数個組合わせて使用する場合または他の形式の軸
受と組合わせて使用する場合軸受の芯合わせを容易にし
た構造の軸受ユニットに関するものである。[Detailed description of the invention] This invention facilitates centering of a hydrostatic radial gas bearing unit, especially when using a combination of multiple bearings or with other types of bearings. The present invention relates to a bearing unit of the structure.
従来の静圧ラジアル気体軸受を複数個組合わせて回転軸
を支持する場合には軸受に調心芯出し機構を右していな
いために芯出し調整の作業が困難であり、第１図の略図
に示す如く軸受ＡおよびＢにおいて、それぞれの軸受が
回転軸に対して正しく芯出しされていないと軸受と回転
軸が接触してラジアル気体軸受としての性能が発揮でき
ない等の問題が生じる。When a rotary shaft is supported by combining multiple conventional static pressure radial gas bearings, it is difficult to adjust the centering because the bearings do not have an alignment mechanism. As shown in FIG. 1, in bearings A and B, if each bearing is not properly centered with respect to the rotating shaft, the bearings and the rotating shaft will come into contact with each other, resulting in problems such as failure to perform as a radial gas bearing.
と（に静圧ラジアル気体軸受においては、一般に高速回
転であるために僅かな調整不具合においても振動や焼付
きを生じ易く、また振動を吸収するための機構を有して
いる場合が多いために安定した回転を保持するための最
適な支持状態を判定することが困難であり、軸受の取付
は調整は他の形式の軸受と比べてはるかに高度の技術的
経験および多くの時間を必要とする等の多くの問題があ
った。(In general, static pressure radial gas bearings rotate at high speeds, so even the slightest adjustment failure can easily cause vibration or seizure, and they often have a mechanism to absorb vibrations.) It is difficult to determine the optimal support conditions to maintain stable rotation, and the installation and adjustment of bearings requires a much higher level of technical experience and more time than other types of bearings. There were many problems such as.
この考案はこれら従来における問題点を解決するために
、静圧ラジアル気体軸受を複数個組合わせて回転軸を支
持する場合または他の形式の軸受と静圧ラジアル気体軸
受と組合わせ使用する場合にも該軸受を容易にしかも短
時間で最適状態の位置に芯合わせして取付けをなし得る
構造の軸受ユニットを提供するものである。In order to solve these conventional problems, this invention is suitable for cases where a rotating shaft is supported by combining multiple hydrostatic radial gas bearings, or when using a combination of other types of bearings and hydrostatic radial gas bearings. Another object of the present invention is to provide a bearing unit having a structure in which the bearing can be easily and quickly aligned and mounted in an optimal position.
つぎに第２図を用いてこの考案の原理を説明すると、１
個σ吻体の運動の自由度は第２図に示すように、ｘ、ｙ
、Ｚ方向の直線方向運動の３自由度と、ｘ、ｙ、Ｚ軸ま
わりの各ねじり運動の３自由度の計６自由度がある。Next, the principle of this device will be explained using Figure 2.
The degrees of freedom of movement of the individual σ proboscis are x, y, as shown in Figure 2.
, 3 degrees of freedom for linear movement in the Z direction, and 3 degrees of freedom for each torsional movement around the x, y, and Z axes, a total of 6 degrees of freedom.
いまラジアル軸受の中心線をｙ軸方向に合わせて考えて
みると、１個のラジアル軸受を使用するときｙ軸方向の
直線運動の自由度およびｙ軸まわりのねじり運動の自由
度は当然確保される。Now, if we consider that the center line of the radial bearing is aligned with the y-axis direction, when one radial bearing is used, the degree of freedom of linear movement in the y-axis direction and the degree of freedom of torsional movement around the y-axis are naturally secured. Ru.
したがって、ラジアル軸受の芯合わせをする際に拘束さ
れる自由度はＸｙＺ方向の直線方向成分とＸ。Therefore, the degrees of freedom that are restricted when aligning the radial bearing are the linear components in the X, Y, and Z directions.
Ｚ軸まわりのねじり運動の成分である。It is a component of torsional motion around the Z axis.
この発明は、この４つの拘束成分を解除して複数個のラ
ジアル軸受の芯合わせを可能にするものである。This invention releases these four constraint components and makes it possible to center a plurality of radial bearings.
つぎに第３図および第４図に示す実施例について説明す
ると、静圧ラジアル軸受スリーブ１は外筒２にはめ合わ
せてあり、該スリーブ１にはオリフィス孔１１が適数個
穿孔されており、外筒２に設げられている軸受用給気孔
２１を通って給気キャビティー１２に入った圧力空気は
オリフィス孔１１を通って軸受面に噴出する。Next, the embodiment shown in FIGS. 3 and 4 will be described. A hydrostatic radial bearing sleeve 1 is fitted into an outer cylinder 2, and an appropriate number of orifice holes 11 are bored in the sleeve 1. Pressurized air that has entered the air supply cavity 12 through the bearing air supply hole 21 provided in the outer cylinder 2 passes through the orifice hole 11 and is ejected onto the bearing surface.
外筒２は支持台３に保持されている。The outer cylinder 2 is held on a support stand 3.
支持台３の下面にはバネ４が取付げられており、バネ４
の他端は静圧プレート５の上面と接続している。A spring 4 is attached to the lower surface of the support base 3.
The other end is connected to the upper surface of the static pressure plate 5.
静圧プレート５には下面にポケット５１が削設されてお
り、該ポケットトに連通する給気路５２が設げられてい
る。A pocket 51 is cut into the lower surface of the static pressure plate 5, and an air supply path 52 communicating with the pocket is provided.
静圧プレート５の下面のポケット以外の他の部分は通常
静圧プレート支持板６の上面に密着している。The other portion of the lower surface of the static pressure plate 5 other than the pocket is normally in close contact with the upper surface of the static pressure plate support plate 6.
静圧プレート支持板６の下側にはクッション部材Ｉが固
定用外枠８との間に設置されている。A cushion member I is installed below the static pressure plate support plate 6 between it and the fixing outer frame 8.
このような構造の場合、Ｚ軸の直線方向自由度の拘束お
よびＸ軸まわりのねじりの自由度の拘束はバネ４により
解除される。In such a structure, the spring 4 releases the constraint on the linear degree of freedom of the Z axis and the constraint on the torsional degree of freedom about the X axis.
またＸ軸の直線方向自由度の拘束およびＺ軸のねじりの
自由度の拘束は、この軸受ユニットを設置する際に静圧
プレート５のポケット５１に圧力空気を送り込んで静圧
プレート支持板６から浮き上がらせて自由にずらせるこ
とにより解除される。In addition, the linear degree of freedom of the X-axis and the torsional degree of freedom of the Z-axis are restricted by sending pressurized air into the pocket 51 of the static pressure plate 5 from the static pressure plate support plate 6 when installing this bearing unit. It is released by lifting it up and moving it freely.
その後、静圧プレート５のポケット５１への給気を停止
すれば静圧プレート５と静圧プレート支持板６は密着し
た状態で比較的柔かいクツ７３７部材７により支持され
ることになる。Thereafter, when air supply to the pocket 51 of the static pressure plate 5 is stopped, the static pressure plate 5 and the static pressure plate support plate 6 are supported by the relatively soft shoe 737 member 7 in a close contact state.
このようにして回転軸が静止しているときの軸受の芯合
わせが可能となり、かつ、回転軸が回転するときに生ず
る振動はクッション部材７とバネ４によって吸収制振さ
れる。In this way, it is possible to center the bearings when the rotating shaft is stationary, and vibrations generated when the rotating shaft rotates are absorbed and damped by the cushion member 7 and the spring 4.
なお、実施例では軸受スリーブ１にオリフィス孔方式と
したが、これを焼結合金等による多孔質材としてもよい
し、形状も円筒状のものでなく半円形を含む部分円弧の
ラジアル軸受でもよい。In the embodiment, the bearing sleeve 1 has an orifice hole type, but it may be made of a porous material such as a sintered alloy, or it may be a radial bearing with a partial arc including a semicircle instead of a cylindrical shape. .
またクッション部材７はバネを使用してもよい。Further, the cushion member 7 may use a spring.
さらにこの装置はこの構造のま＼使用してもよいが、こ
の装置を他の適当な構造の固定支持機構と組合わせて使
用してもよい。Further, although the device may be used as is, the device may be used in combination with other suitable structures of fixed support mechanisms.
上記の如く、この考案による静圧ラジアル気体軸受ユニ
ットによれば、軸受を複数個組合わせて使用する場合も
容易に軸の芯合わせが可能であり、従来高度の技術を要
して困難とされていたこの種の軸受における軸の芯合わ
せ調整作業が簡単にしかも精度良く適合させることがで
きる。As mentioned above, according to the hydrostatic radial gas bearing unit of this invention, it is possible to easily align the shafts even when multiple bearings are used in combination, which was previously difficult and required advanced technology. The centering adjustment work of the shaft in this type of bearing, which has been previously used, can be easily and accurately adjusted.
また、この軸受ユニットに適当なバネおよびクッション
部材を選択することにより、回転軸の振動を効果的に吸
収して安定した高速回転を維持することができる。Furthermore, by selecting an appropriate spring and cushion member for this bearing unit, it is possible to effectively absorb vibrations of the rotating shaft and maintain stable high-speed rotation.
第１図は従来形軸受が２個組合って使用する場合の芯違
いを説明するための略図、第２図は本考案の原理を説明
するための説明図、第３図および第４図はそれぞれ本考
案の実施例を示す斜視図および断面図である。
図中符号１は静圧ラジアル軸受スリーブ、２は外筒、３
は支持台、４はバネ、５は静圧プレート、６は静圧プレ
ート支持板、Ｉはクッション部材、８は固定用外枠であ
る。Figure 1 is a schematic diagram to explain the misalignment when two conventional bearings are used in combination, Figure 2 is an explanatory diagram to explain the principle of the present invention, and Figures 3 and 4 are 1 is a perspective view and a cross-sectional view, respectively, showing an embodiment of the present invention. In the figure, 1 is a hydrostatic radial bearing sleeve, 2 is an outer cylinder, and 3 is a static pressure radial bearing sleeve.
4 is a support base, 4 is a spring, 5 is a static pressure plate, 6 is a static pressure plate support plate, I is a cushion member, and 8 is an outer frame for fixing.
Claims (1)
圧ラジアル気体軸受ユニットにおいて、該ユニットは、
静圧ラジアル気体軸受となるスリーブ１と、該スリーブ
１がはめ込まれた外筒２と、該外筒２を保持した支持台
３とを有し、該支持台３は、ばね４を介して静圧プレー
ト５と連結されており、かつ前記静圧プレート５が、固
定用外枠８内の底面上に置かれたクッション部材７を介
して弾性支持された静圧プレート支持板６上に移動可能
に載置されており、前記静圧プレート５には、静圧プレ
ート支持板６と対向する面にポケット５１と該ポケット
に連通し、かつ、固定用外枠８の外部から気体を送り込
むための給気孔５２が設けており、また前記外筒２には
、静圧ラジアル気体軸受となるスリーブ１の軸受面に気
体を送り込むための軸受用給気孔２１を有することを特
徴とした静圧ラジアル気体軸受ユニット。In a hydrostatic radial gas bearing unit having a hydrostatic radial gas bearing that supports a radial load, the unit includes:
It has a sleeve 1 serving as a static pressure radial gas bearing, an outer cylinder 2 into which the sleeve 1 is fitted, and a support stand 3 holding the outer cylinder 2. The static pressure plate 5 is connected to a pressure plate 5, and the static pressure plate 5 is movable onto a static pressure plate support plate 6 which is elastically supported via a cushion member 7 placed on the bottom surface within the fixing outer frame 8. The static pressure plate 5 has a pocket 51 on the surface facing the static pressure plate support plate 6, and a pocket 51 communicating with the pocket and for feeding gas from outside of the fixing outer frame 8. A hydrostatic radial gas characterized in that an air supply hole 52 is provided, and the outer cylinder 2 has a bearing air supply hole 21 for feeding gas to the bearing surface of the sleeve 1 serving as a hydrostatic radial gas bearing. bearing unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3430079U JPS5846257Y2 (en) | 1979-03-19 | 1979-03-19 | Hydrostatic radial gas bearing unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3430079U JPS5846257Y2 (en) | 1979-03-19 | 1979-03-19 | Hydrostatic radial gas bearing unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55134520U JPS55134520U (en) | 1980-09-24 |
| JPS5846257Y2 true JPS5846257Y2 (en) | 1983-10-21 |
Family
ID=28891415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3430079U Expired JPS5846257Y2 (en) | 1979-03-19 | 1979-03-19 | Hydrostatic radial gas bearing unit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5846257Y2 (en) |
-
1979
- 1979-03-19 JP JP3430079U patent/JPS5846257Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55134520U (en) | 1980-09-24 |
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