JPS6237152Y2 - - Google Patents
Info
- Publication number
- JPS6237152Y2 JPS6237152Y2 JP8576780U JP8576780U JPS6237152Y2 JP S6237152 Y2 JPS6237152 Y2 JP S6237152Y2 JP 8576780 U JP8576780 U JP 8576780U JP 8576780 U JP8576780 U JP 8576780U JP S6237152 Y2 JPS6237152 Y2 JP S6237152Y2
- Authority
- JP
- Japan
- Prior art keywords
- main shaft
- air
- rotating body
- rotary joint
- housing
- 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
- 238000012360 testing method Methods 0.000 claims description 5
- 238000005259 measurement Methods 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
Landscapes
- Testing Of Balance (AREA)
Description
【考案の詳細な説明】
本考案は、圧縮空気を用いて回転体を保持し、
この回転体を回転軸と一体となして回転させ、不
つり合いを測定するつりあい試験機に関し、特に
主軸円筒外周面に微小すきまをもつて嵌合する平
軸受を有する空気回転継手を使用することにより
測定精度を高めることを目的とする。[Detailed description of the invention] This invention uses compressed air to hold a rotating body,
Regarding the balance testing machine that rotates this rotating body integrally with the rotating shaft and measures the unbalance, in particular, by using an air rotary joint that has a flat bearing that fits on the outer peripheral surface of the main shaft cylinder with a minute gap. The purpose is to improve measurement accuracy.
従来、このような試験機においては、第１図、
第２図に示すように回転体１を保持する空圧式回
転体保持装置２に、圧縮空気を供給するために、
主軸３の内部に空気路３ａを設け、主軸３の軸下
端部に空気回転継手４をねじにより締結してい
た。空圧式回転体保持装置２に圧縮空気が供給さ
れると、爪２ａはラジアル方向に移動して回転体
１を保持し、その後、回転体１は、ベルト５を介
して電動機６により、主軸３及び空圧式回転体保
持装置２と一体となつて回転する。従つて、回転
中、回転体１の不つりあいにより、ハウジング７
が板ばね８を介して振動し、その振動を振動検出
器９によつて検出することにより、回転体１の不
つりあいを測定していた。 Conventionally, in such a testing machine, Fig. 1,
As shown in FIG. 2, in order to supply compressed air to the pneumatic rotating body holding device 2 that holds the rotating body 1,
An air passage 3a was provided inside the main shaft 3, and an air rotary joint 4 was fastened to the lower end of the main shaft 3 with a screw. When compressed air is supplied to the pneumatic rotating body holding device 2, the claws 2a move in the radial direction to hold the rotating body 1, and then the rotating body 1 is moved to the main shaft 3 by the electric motor 6 via the belt 5. and rotates integrally with the pneumatic rotating body holding device 2. Therefore, during rotation, due to the unbalance of the rotating body 1, the housing 7
vibrates via a leaf spring 8, and the unbalance of the rotating body 1 is measured by detecting the vibration with a vibration detector 9.
しかし、このような試験機では、空気回転継手
４が主軸３にねじで締結されているため、空気回
転継手４と主軸３の軸芯を正確に一致させること
が困難であり、その偏心により生じる振動が測定
信号に混入するため、測定精度が低下するという
欠点を有していた。 However, in such a test machine, since the pneumatic rotary joint 4 is fastened to the main shaft 3 with a screw, it is difficult to accurately align the axes of the pneumatic rotary joint 4 and the main shaft 3. Since vibrations are mixed into the measurement signal, the measurement accuracy has been reduced.
本考案は、上記従来例の欠点を解消するもの
で、第３図、第４図にもとづき、その一実施例を
説明する。１０は不つりあいを測定される回転体
であり、この回転体１０は空圧式回転体保持装置
１１で保持している。１２はプーリであり、主軸
１３と一体となつて回転する。１３ａは主軸１３
に設けられた空気路、１４は主軸１３を回転自在
に支持する軸受、１５は軸受１４を支持するハウ
ジングで、このハウジング１５は、板ばね１６に
より、振動可能な状態で基台１７に取付けられて
いる。１８は空気回転継手で、上下端に平軸受１
８ａを有しており、平軸受１８ａと主軸１３の円
筒外周面とのはめあい部については、主軸１３が
回転可能で、かつ空気の漏れをごく少量にするた
め、微小なすきまがあり、さらに空気路１３ａの
空気圧の減少を防止するため、ラビリンス溝１８
ｂを設けてある。空気回転継手１８はハウジング
１５と分離して設けられており、またハウジング
１５の開口部を通つて外部に一端を出し、管継手
１９を経て軟らかいパイプ２０によつて空気圧縮
機（図示せず）に接続されている。また空気回転
継手１８は前記開口部の端面によつてまわり止め
がほどこされている。２１は主軸１３を回転駆動
する電動機、２２は電動機２１の回転を主軸１３
に伝達するベルトである。 The present invention eliminates the drawbacks of the conventional example described above, and one embodiment thereof will be explained based on FIGS. 3 and 4. 10 is a rotating body whose unbalance is to be measured, and this rotating body 10 is held by a pneumatic rotating body holding device 11. 12 is a pulley, which rotates together with the main shaft 13. 13a is the main shaft 13
14 is a bearing that rotatably supports the main shaft 13; 15 is a housing that supports the bearing 14; this housing 15 is attached to the base 17 by a leaf spring 16 so as to be able to vibrate; ing. 18 is an air rotary joint, with flat bearings 1 at the upper and lower ends.
8a, and the fitting part between the flat bearing 18a and the cylindrical outer circumferential surface of the main shaft 13 has a small gap in order to allow the main shaft 13 to rotate and to minimize air leakage. In order to prevent a decrease in air pressure in the passage 13a, a labyrinth groove 18 is provided.
b is provided. The air rotary joint 18 is provided separately from the housing 15, and one end extends to the outside through the opening of the housing 15, and is connected to an air compressor (not shown) by a soft pipe 20 via a pipe joint 19. It is connected to the. Further, the air rotary joint 18 is prevented from rotating by the end face of the opening. 21 is an electric motor that rotationally drives the main shaft 13; 22 is an electric motor that rotates the main shaft 13;
It is a belt that transmits information to
上記構成において、空気圧縮機より、空気が第
３図、第４図の矢印の方向に流れて空圧式回転体
保持装置１１に供給されると、回転体１０は保持
される。 In the above configuration, when air flows from the air compressor in the direction of the arrows in FIGS. 3 and 4 and is supplied to the pneumatic rotating body holding device 11, the rotating body 10 is held.
その後、主軸１３は電動機２１により回転駆動
され、回転体１０もこれと一体となつて回転し、
回転体１０の不つりあいによる遠心力でハウジン
グ１５に振動が生じる。その振動を振動検出器
（図示せず）で検出して不つりあいを測定する。 Thereafter, the main shaft 13 is rotationally driven by the electric motor 21, and the rotating body 10 also rotates together with it.
Vibration occurs in the housing 15 due to centrifugal force due to the unbalance of the rotating body 10. The vibration is detected by a vibration detector (not shown) to measure unbalance.
以上本考案によると、空気回転継手１８の軸芯
は、主軸１３の接続部の軸芯に従動的に一致し、
また主軸１３の軸受１４の取付部と前記空気回転
継手１８の接続部の軸芯は、加工上極めて容易に
一致させることができる。したがつて空気回転継
手１８は、軸芯の不一致により、もみすり運動を
起こすことなく、極めて安定した状態で主軸１３
に嵌合している。よつて、従来のように、主軸の
軸芯と空気回転継手の軸芯のずれにより生ずる振
動は全くなく、不つりあい測定精度の低下は起こ
らない。また、空気回転継手１８の空気の漏れは
空式回転体保持装置１１の作動が正常に行なわれ
る程度に、ごくわずかにおさえられているが、こ
のわずかに漏れる空気中に含まれる油分は、平軸
受１８ａと主軸１３のすべり面に給油を行ない、
またこの空気により前記すべり面の冷却を行なう
ため、前記すべり面の焼付きを防止するというす
ぐれた特徴を有している。 According to the present invention, the axial center of the air rotary joint 18 is automatically aligned with the axial center of the connecting portion of the main shaft 13,
Furthermore, the axes of the mounting portion of the bearing 14 of the main shaft 13 and the connecting portion of the air rotary joint 18 can be made to coincide with each other very easily in machining. Therefore, the pneumatic rotary joint 18 is able to rotate the main shaft 13 in an extremely stable state without causing any rubbing motion due to misalignment of the axes.
is fitted. Therefore, unlike in the prior art, there is no vibration caused by misalignment between the axis of the main shaft and the axis of the air rotary joint, and no deterioration in unbalance measurement accuracy occurs. Furthermore, although the air leakage from the air rotary joint 18 is suppressed to a very small extent to allow the pneumatic rotating body holding device 11 to operate normally, the oil contained in this slightly leaked air is Lubricating the sliding surfaces of the bearing 18a and the main shaft 13,
Furthermore, since the sliding surface is cooled by this air, it has an excellent feature of preventing seizure of the sliding surface.
第５図は、本考案の他の実施例である空気回転
継手で、２３は主軸であり、この主軸２３内に空
気路２３ａを設けている。２４は空気回転継手で
あり、この空気回転継手２４にラビリンス溝２４
ａを有し、管継手２５、軟らかいパイプ２６に接
続している。この場合、主軸２３の円筒外周面に
微小すきまをもつて嵌合する２個の平軸受を別に
設けなくても空気回転継手本体２４がこれを構成
し、主軸２３との嵌合部の中央において、空気回
転継手２４に溝２４ｂを形成することによりすき
まの大きい部分を設けて空気路２３ａとの接続を
なしている点が特徴となつている。 FIG. 5 shows an air rotary joint according to another embodiment of the present invention, in which 23 is a main shaft, and an air passage 23a is provided within this main shaft 23. 24 is an air rotary joint, and this air rotary joint 24 has a labyrinth groove 24.
a, and is connected to a pipe joint 25 and a soft pipe 26. In this case, the air rotary joint main body 24 constitutes this without separately providing two plain bearings that fit on the cylindrical outer circumferential surface of the main shaft 23 with a minute gap, and the center of the fitting part with the main shaft 23 , is characterized in that a groove 24b is formed in the air rotary joint 24 to provide a portion with a large clearance to connect to the air path 23a.
さらに第６図は本考案の他の実施例である空気
回転継手で、２７は主軸、２７ａは空気路、２７
ｂは主軸２７に設けられたラビリンス溝、２８は
空気回転継手、２８ａは主軸２７の円筒外周面に
微小すきまをもつて嵌合する１個の平軸受、２９
は管継手、３０は軟らかいパイプである。主軸２
７と平軸受２８ａの嵌合部の中央で、主軸２７に
溝２７ｃを形成することによりすきまの大きい部
分を設け、空気路２７ａとの接続をなし、かつラ
ビリンス溝２７ｂを主軸２７に設けることを特徴
としている。 Furthermore, FIG. 6 shows an air rotary joint which is another embodiment of the present invention, in which 27 is a main shaft, 27a is an air passage, 27
b is a labyrinth groove provided in the main shaft 27, 28 is an air rotation joint, 28a is a single plain bearing that fits on the cylindrical outer peripheral surface of the main shaft 27 with a minute clearance, 29
is a pipe joint, and 30 is a soft pipe. Main shaft 2
7 and the plain bearing 28a, a groove 27c is formed in the main shaft 27 to provide a large clearance part to connect with the air passage 27a, and a labyrinth groove 27b is provided in the main shaft 27. It is a feature.
なお、前記実施例における、１８ｂ，２４ａ，
２７ｂのラビリンス溝は、空気路中の圧力低下を
防止するためのものであつて、空気路中の圧力低
下が空圧式回転体保持装置の実用上差し支えない
程度のものであれば、設ける必要がないこともあ
る。 In addition, in the above example, 18b, 24a,
The labyrinth groove 27b is for preventing a pressure drop in the air passage, and it is necessary to provide it if the pressure drop in the air passage is such that it does not pose a practical problem for the pneumatic rotating body holding device. Sometimes there isn't.
このように、本考案によれば、主軸と、空気回
転継手の軸芯のずれによる振動によつて生じる不
つりあい測定精度の低下がなく、たて型つりあい
試験機の性能向上をもたらし、その工業的価値は
大きい。 As described above, according to the present invention, there is no reduction in the unbalance measurement accuracy caused by vibration caused by misalignment between the axis of the main shaft and the air rotary joint, and the performance of the vertical balance testing machine is improved, making it suitable for industrial use. The value is great.
第１図は、従来例の斜視図、第２図は同縦断面
図、第３図は、本考案の一実施例におけるつりあ
い試験機の縦断面図、第４図は同図中の直線Ａ−
Ａにおける横断面図、第５図、第６図は本考案の
他の実施例である空気回転継手の縦断面図を示
す。
１０……回転体、１１……空圧式回転体保持装
置、１３……主軸、１３ａ……空気路、１４……
軸受、１５……ハウジング、１６……板ばね、１
７……基台、１８……空気回転継手、１８ａ……
平軸受、２１……電動機、２３……主軸、２３ａ
……空気路、２４……空気回転継手、２７……主
軸、２７ａ……空気路、２８……空気回転継手、
２８ａ……平軸受。
Fig. 1 is a perspective view of a conventional example, Fig. 2 is a longitudinal sectional view thereof, Fig. 3 is a longitudinal sectional view of a balance tester according to an embodiment of the present invention, and Fig. 4 is a straight line A in the figure. −
A cross-sectional view at A, and FIGS. 5 and 6 show longitudinal cross-sectional views of an air rotary joint that is another embodiment of the present invention. 10... Rotating body, 11... Pneumatic rotating body holding device, 13... Main shaft, 13a... Air path, 14...
Bearing, 15... Housing, 16... Leaf spring, 1
7...Base, 18...Air rotation joint, 18a...
Plain bearing, 21...Electric motor, 23...Main shaft, 23a
... Air path, 24 ... Air rotation joint, 27 ... Main shaft, 27a ... Air path, 28 ... Air rotation joint,
28a...Flat bearing.
Claims (1)
使用して保持する空圧式回転体保持装置と、この
空圧式回転体保持装置を支持し、内部に前記回転
体保持装置から空気回転継手に通じる空気路を設
けた主軸と、この主軸を回転自在に支持する軸受
と、この軸受を支持するハウジングと、前記回転
体が回転している時に生じる振動を検出する振動
検出器と、前記主軸を回転駆動する駆動源とを有
し、上記空気回転継手は、前記主軸の外周面に回
転自在に支持され、かつ前記主軸と微小すきまを
もつて嵌合し、前記ハウジングより分離して設け
られるとともに、前記空気路に連通するよう構成
したことを特徴とするつりあい試験機。 A pneumatic rotating body holding device that uses compressed air to hold a rotating body whose unbalance is to be measured; a main shaft provided with a passage, a bearing that rotatably supports the main shaft, a housing that supports the bearing, a vibration detector that detects vibrations generated when the rotating body rotates, and a rotationally driven drive of the main shaft. The air rotary joint is rotatably supported on the outer circumferential surface of the main shaft, is fitted with the main shaft with a minute clearance, is provided separately from the housing, and is provided separately from the housing. A balance testing machine characterized by being configured to communicate with an air path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8576780U JPS6237152Y2 (en) | 1980-06-18 | 1980-06-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8576780U JPS6237152Y2 (en) | 1980-06-18 | 1980-06-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5728352U JPS5728352U (en) | 1982-02-15 |
| JPS6237152Y2 true JPS6237152Y2 (en) | 1987-09-22 |
Family
ID=29448012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8576780U Expired JPS6237152Y2 (en) | 1980-06-18 | 1980-06-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6237152Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001324036A (en) * | 2000-05-15 | 2001-11-22 | Opton Co Ltd | Rotary valve |
-
1980
- 1980-06-18 JP JP8576780U patent/JPS6237152Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5728352U (en) | 1982-02-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4864859A (en) | Method for dynamically balancing a mechanism having a high speed rotating component | |
| JPH0440650B2 (en) | ||
| JP3383537B2 (en) | Testing machine for bearings | |
| US4976147A (en) | Device for measuring dynamic balance of a rotor | |
| JPS6237152Y2 (en) | ||
| US5367909A (en) | Test weight | |
| JP3448416B2 (en) | Built-in motor | |
| JPS63259242A (en) | Automatic balancer for rotor | |
| JP2003149084A (en) | Apparatus and method for inspecting bearing device | |
| JPH08254402A (en) | Rotary shaft monitoring device | |
| JPH0530208B2 (en) | ||
| JPH0522843Y2 (en) | ||
| JPS62203040A (en) | Spin tester | |
| JPS6045816B2 (en) | Work holding device for balance testing machine | |
| JPH0321465Y2 (en) | ||
| JPH0512752Y2 (en) | ||
| JPH0448516Y2 (en) | ||
| JP2008275363A (en) | Inspection method of fluid dynamic pressure bearing, and spindle motor equipped with same | |
| KR19990080098A (en) | Balancing measuring device of rotating body | |
| JPH11311588A (en) | Method and apparatus for inspecting rotation accuracy of ball bearing | |
| JPH0219705Y2 (en) | ||
| JPS626133A (en) | Adjusting method for balance of fluid bearing | |
| JPH0532744Y2 (en) | ||
| JPS63186120A (en) | Method for measuring unbalance of crank shaft | |
| JPH038969Y2 (en) |