JPS6224053A - Automatic balancing device for rotary body in imbalance state - Google Patents
Automatic balancing device for rotary body in imbalance stateInfo
- Publication number
- JPS6224053A JPS6224053A JP16231185A JP16231185A JPS6224053A JP S6224053 A JPS6224053 A JP S6224053A JP 16231185 A JP16231185 A JP 16231185A JP 16231185 A JP16231185 A JP 16231185A JP S6224053 A JPS6224053 A JP S6224053A
- Authority
- JP
- Japan
- Prior art keywords
- coil
- rotating body
- movable pin
- chamber
- balance
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/30—Flywheels
- F16F15/31—Flywheels characterised by means for varying the moment of inertia
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は回転噴霧式金属粉末製造装置等の如く高速回転
中の回転軸が突然アンバランスを生じたときにバランス
させるために用いる回転体のアンバランス自動平衡装置
に関するものでおる。Detailed Description of the Invention [Industrial Application Field] The present invention relates to a rotating body used for balancing a rotating shaft during high-speed rotation, such as in a rotary atomizing metal powder manufacturing device, when the shaft suddenly becomes unbalanced. This article relates to an unbalanced automatic balancing device.
［従来の技術］
たとえば、回転噴霧式金属粉末製造装置は第４図に示す
如く、軸受Ｃにて回転自在に支持された鉛直の回転軸ａ
の上端に円板すを取り付け、回転軸ａを高速回転（たと
えば、２００００〜３０００Ｏｒ、 ｐ、 ｍ）ざぜ、
Ｎ２ガスを封入した容器ｄ内に設置した溶融金属加熱炉
ｅから溶融金属を高速回転円板す上に上方から流すこと
により、溶融金属を遠心力で外方向に噴霧状にして飛ば
し、ガス雰囲気中で冷却して微粉末を作るようにしたも
のでおる。ｆは空気タービンでおる。[Prior Art] For example, as shown in FIG. 4, a rotary atomization type metal powder manufacturing apparatus has a vertical rotating shaft a rotatably supported by a bearing C.
Attach a disc to the upper end of the rotating shaft a and rotate it at high speed (e.g. 20000 to 3000 Or, p, m).
By flowing molten metal from above onto a high-speed rotating disk from a molten metal heating furnace e installed in a container d filled with N2 gas, the molten metal is sprayed outward by centrifugal force, creating a gas atmosphere. It is made of a material that is cooled inside to create a fine powder. f is an air turbine.
上記金属粉末製造装置では、金属粉末の製造中に、円板
す上面に冷えて固着した金属片ｑの一部りが第５図の如
く円板す上から欠落すると、これが原因で高速回転中の
回転軸に急激なアンバランスを生じることが多く、軸受
Ｃや回転体ａを損傷させるおそれがおる。In the above-mentioned metal powder manufacturing apparatus, during the production of metal powder, if a part of the metal piece q that has cooled and adhered to the upper surface of the disk falls off from the top of the disk as shown in Fig. 5, this may cause the metal powder to be rotated at high speed. A sudden imbalance often occurs in the rotating shaft of the rotor, and there is a risk of damaging the bearing C and the rotating body a.
［発明が解決しようとする問題点１
従来、上述しな金属粉末製造装置にあける如き高速回転
中の回転軸に急激にアンバランスが生じた場合の対策と
して有効なものがなかった。[Problem to be Solved by the Invention 1] Conventionally, there has been no effective countermeasure against a sudden imbalance occurring in the rotating shaft during high-speed rotation, such as in the metal powder manufacturing apparatus described above.
本発明は、回転軸が高速回転中に急激にアンバランスを
生じたときに簡単な構成で自動的に且つ瞬時に平衡化が
図れるようにしようとするものである。The present invention is intended to automatically and instantaneously balance the rotating shaft with a simple configuration when the rotating shaft suddenly becomes unbalanced during high-speed rotation.
［問題点を解決するための手段１
本発明は、回転体に、回転体の軸芯と同芯状にした部屋
を設けその中で、バランス用の複数個の球が動き回れる
ようにし、該部屋の底面所要個所に、回転体の軸芯方向
に延びる穴を設け、該穴に配した可動ピンをばねで下方
へ引き下、げてあくようにすると共に、該可動ピンの途
中の周りに可動ピン駆動用コイルを配設し、且つ上記回
転体の端部には、発電機を設け、該発電機と上記可動ピ
ン駆動用コイルを電気的に接続し、更に、回転体の回転
計と上記発電機の制御装置とを接続し、上記部屋内に複
数個の球を収納１−ると共に粘性液を充満した構成とす
る。[Means for Solving the Problems 1] The present invention provides a rotating body with a chamber that is concentric with the axis of the rotating body, in which a plurality of balls for balance can move around; Holes extending in the axial direction of the rotating body are provided at required locations on the bottom of the room, and a movable pin placed in the hole is pulled down and raised by a spring. A movable pin driving coil is provided, and a generator is provided at the end of the rotating body, the generator and the movable pin driving coil are electrically connected, and a tachometer of the rotating body is connected. A control device for the generator is connected to the chamber, and a plurality of balls are housed in the chamber and the chamber is filled with viscous liquid.
［作 用］
回転体が成る回転速度以上になるまでは、回転体として
の静的、動的バランスは保たれているが、成る回転速度
以上になると、回転計からの指令に応じて発電が行われ
、可動ピン駆動用コイルに電流が流される。これによっ
て可動ピンはばねに抗して上方向へ移動させられ、可動
ビン上に載っていた複数個の球が部屋内に押し出された
後、遠心力により該部屋の内周面に押し付けられてバラ
ンスされる。この状態で回転体に急激なアンバランスが
生じると、上記複数個の球が位置を変えて自動的にバラ
ンスをとり、回転体は平衡を保って回転できる。[Function] The static and dynamic balance of the rotating body is maintained until the rotational speed exceeds that of the rotating body, but when the rotational speed exceeds that of the rotating body, power generation stops according to the command from the tachometer. The current is applied to the movable pin drive coil. As a result, the movable pin is moved upward against the spring, and the multiple balls placed on the movable bottle are pushed out into the room and then pressed against the inner peripheral surface of the room by centrifugal force. balanced. If a sudden imbalance occurs in the rotating body in this state, the plurality of balls change their positions and automatically balance, allowing the rotating body to rotate while maintaining balance.
［実 施 例１ 以下、本発明の実施例を図面を参照して説明する。[Implementation Example 1] Embodiments of the present invention will be described below with reference to the drawings.
第１図及び第２図に示す如く、回転軸１の頂部に設けた
円板２の内部上端部に回転ｌ１ｉＩ！１１と同芯状の円
形の部屋３を形成し、該部屋３の底面を円板２の軸芯位
置が最も低くなるようにして、この部分に円板２の軸芯
方向に延びる穴４を設け、該穴４の下方にばね室５を設
ける。上記穴４の大きさは、回転ｔ＄１のアンバランス
時（ト移動してバランスをとるようにするため部屋３内
に収納した２個の鋼球６が並んで入り得る大きざとし、
該穴４には、下端部かばね至５に突出するように可動ピ
ン７を上下移動自在に挿入配置し、可動ピン７の下端と
ばね至５の土壁との間に介在させた圧縮ばね８により常
時は可動ピン７が下方へ引き下げられているようにし、
且つ該可動ピン７の途中の周りには可動ピン駆動用コイ
ル１０を設け、更に可動ピン７の上端に取り付けたプレ
ート９上に上記鋼球６が載っているようにする。又、回
転軸１の下端には、外周に直流発電用コイル１１を設け
、その外側に鉄心１２にコイル１３を巻いてなる制御可
能な磁極ＮとＳを設けて、回転１Ｆｌｌ１１の回転によ
り発電が行われるようにしてなる発電機を設けると共に
、回転軸１の回転数（回転速度）を検出する検出器１４
を設け、上記コイル１３は励磁用直流電源１５に接続し
、又、検出器１４は回転ｈ１１６に接続し、更に回転計
１６と励磁用直流電源１５とを接続し、回転計１６から
の指令に応じて励磁用直流電源１５がらコイル１３へ電
流が流れて磁極Ｎ、Ｓが制御できるようにしてあり、こ
の制御によって発電が］ントロールされて可動ピン６の
可動がコントロールされるようにしである。なお、上記
部屋３、穴４、ばね至５内ｌこは粘性液（たとえば、油
）１７が充満しており、部屋３内に収納されている鋼球
６が、回転ｌＴ１１１１の高速回転時に粘性８！１７の
粘性抵抗によって自励振動しないようにする。As shown in FIGS. 1 and 2, the inner upper end of the disc 2 provided at the top of the rotating shaft 1 rotates l1iI! A circular chamber 3 concentric with 11 is formed, and the bottom surface of the chamber 3 is arranged so that the axial position of the disk 2 is the lowest, and a hole 4 extending in the axial direction of the disk 2 is formed in this part. A spring chamber 5 is provided below the hole 4. The size of the hole 4 is such that when the rotation t$1 is unbalanced (to move and balance the two steel balls 6 stored in the chamber 3 side by side),
A movable pin 7 is inserted into the hole 4 so as to be movable up and down so as to protrude from the lower end to the spring 5, and a compression spring 8 is interposed between the lower end of the movable pin 7 and the soil wall of the spring 5. so that the movable pin 7 is always pulled downward,
A movable pin driving coil 10 is provided around the middle of the movable pin 7, and the steel ball 6 is placed on a plate 9 attached to the upper end of the movable pin 7. Further, at the lower end of the rotating shaft 1, a DC power generation coil 11 is provided on the outer periphery, and controllable magnetic poles N and S, which are formed by winding a coil 13 around an iron core 12, are provided on the outside of the DC power generation coil 11. A detector 14 for detecting the number of rotations (rotational speed) of the rotating shaft 1 is provided.
The coil 13 is connected to the excitation DC power supply 15, the detector 14 is connected to the rotation h116, and the tachometer 16 and the excitation DC power supply 15 are connected, so that the command from the tachometer 16 is Correspondingly, current flows from the excitation DC power supply 15 to the coil 13 to control the magnetic poles N and S, and this control controls power generation and controls the movement of the movable pin 6. The interior of the chamber 3, hole 4, and spring 5 are filled with a viscous liquid (for example, oil) 17, and the steel ball 6 stored in the chamber 3 becomes viscous during high-speed rotation of the rotor 1111. 8! Avoid self-excited vibration due to viscous resistance of 17.
回転軸１が回転をしていても、励磁用直流電源１５から
コイル１３に電流を流さなければ、磁極Ｎ、Ｓは励磁さ
れないので直流発電用コイル１７は発電しない。発電し
なければ、可動ピン駆動用コイル１０へ電流か流れない
ので、可動ピン７は圧縮ばね８の力により下方に引き奇
せられておリ、２個の鋼球６は穴４内に必ってプレート
９上に位置したままでバランスされた状態になっている
。Even if the rotating shaft 1 is rotating, unless current is passed through the coil 13 from the excitation DC power source 15, the magnetic poles N and S will not be excited, so the DC power generation coil 17 will not generate power. If no power is generated, no current will flow to the movable pin drive coil 10, so the movable pin 7 is pulled downward by the force of the compression spring 8, and the two steel balls 6 are forced into the hole 4. It is in a balanced state while remaining positioned on plate 9.
回転計１６と励磁用直流電源１５とは電気的に接続され
ており、回転計１６からの信号に応じて磁極Ｎ、Ｓの励
磁がコントロールできるようにしであるので、回転軸１
が成る回転速度（１次危険速度）に達すると磁極Ｎ、Ｓ
を励磁するようにしてあくと、回転軸１が１次危険速度
を越えた回転数に達すると、自動的に回転計１６からの
指令により励磁用直流電源１５から磁極のコイル１３へ
電流が送られる。回転軸１に取り付けられた直流発電用
コイル１１は、その外側の磁極Ｎ、Ｓが励磁されること
によって発電するので、この発電前からの電流が可動ピ
ン駆動用コイル１０に直ちに流され、可動ピン７は圧縮
ばね８に抗して上方向へ移動する。これにより可動ピン
７上端のプレート９に載っていた鋼球６は穴４内から部
屋２内へ押し出され、遠心力によって部屋２の内周壁面
に押し付けられて安定した位置で止まり、バランスか保
たれて円板２は回転を続ける。The tachometer 16 and the excitation DC power supply 15 are electrically connected, and the excitation of the magnetic poles N and S can be controlled according to the signal from the tachometer 16.
When the rotational speed (first critical speed) is reached, the magnetic poles N and S
When the rotating shaft 1 reaches a rotation speed exceeding the primary critical speed, current is automatically sent from the exciting DC power source 15 to the magnetic pole coil 13 in response to a command from the tachometer 16. It will be done. The DC power generation coil 11 attached to the rotating shaft 1 generates power when its outer magnetic poles N and S are excited, so the current before power generation is immediately passed through the movable pin drive coil 10, causing the movable pin to move. The pin 7 moves upward against the compression spring 8. As a result, the steel ball 6 placed on the plate 9 at the upper end of the movable pin 7 is pushed out from inside the hole 4 into the chamber 2, and is pressed against the inner wall surface of the chamber 2 by centrifugal force and stops at a stable position, maintaining balance. The disc 2 hangs down and continues to rotate.
この状態で、たとえば、第５図に示した金属片の一部が
欠落した等により急激にアンバランスが発生すると、２
個の鋼球６は重心変動に応じて自動的に安定な位置へと
移動にてバランスをとり、瞬間に平衡となる。かかる関
係を示したのが第３図である。・
回転軸１の回転数が低下すると、回転計１６からの信号
で磁極Ｎ、Ｓが消磁されて発電が停止し、可動ピン駆動
用コイル１０へ電流が流れなくなり、可動ピン７は圧縮
ばね８の力によって下方へ引き下げられ、同時に鋼球６
は遠心力で飛ばされることがなくなって穴４内に収まる
。In this state, if an imbalance occurs suddenly due to, for example, a part of the metal piece shown in Figure 5 being missing, the 2
The steel balls 6 automatically move to a stable position in accordance with the fluctuation of the center of gravity to maintain balance, and are instantly in equilibrium. FIG. 3 shows this relationship. - When the rotational speed of the rotating shaft 1 decreases, the magnetic poles N and S are demagnetized by the signal from the tachometer 16, power generation stops, current no longer flows to the movable pin drive coil 10, and the movable pin 7 is moved by the compression spring 8. At the same time, the steel ball 6 is pulled down by the force of
is no longer blown away by centrifugal force and is housed in the hole 4.
本発明においては、励磁用直流電源１５が回転計１６か
らの指令によって任意にコントロールすることができ、
又、可動ピン駆動用コイル１０への電流１よ、回転軸１
に設けた直流発電用コイル１１とその外側に設けた制御
可能な磁極Ｎ、Ｓからなる発電機で発電するようにして
おるので、励磁用直流電源１５をコントロールして発電
を制御することにより可動ピン７の駆動を自在にコント
ロールできることになり、回転数に対する調整も容易と
なる。In the present invention, the excitation DC power source 15 can be arbitrarily controlled by commands from the tachometer 16,
In addition, the current 1 to the movable pin driving coil 10, the rotating shaft 1
Since power is generated by a generator consisting of a DC power generation coil 11 installed in the coil 11 and controllable magnetic poles N and S installed outside of the coil 11, the power generation can be controlled by controlling the excitation DC power source 15. The drive of the pin 7 can be controlled freely, and the rotation speed can be easily adjusted.
なお、鋼球６は２個以上用いてもよく、又、金属粉末製
造の場合以外にも本発明は応用できること、等は勿論で
おる。It should be noted that two or more steel balls 6 may be used, and it goes without saying that the present invention can also be applied to cases other than metal powder production.
［発明の効果］
以上述べた如く、本発明の装置によれば、バランス用の
球の部屋への押し出しの動作を、回転体の回転速度と機
械的に関連付けるのではなく電気制御により行わせるよ
うにしであるので、制御に自在性をもたせることができ
、球が部屋に飛び出した状態で回転体が回転中に急激に
アンバランスが生じると、球が自動的に位置を変えて瞬
時に平衡させることができ、回転体を損傷させるおそれ
がなくなる。又、回転体の端部に設ける発電機として、
回転体に直流発電用コイルを設けてその外側に制御可能
な磁極を設ける構成とすることにより可動ピン７駆動用
電源の通電用スリップリングが不要となる利点がある。[Effects of the Invention] As described above, according to the device of the present invention, the action of pushing out the balancing ball into the chamber is not mechanically correlated with the rotational speed of the rotating body, but is electrically controlled. Because of this, it is possible to have flexibility in control, and if a sudden imbalance occurs while the rotating body is rotating with the ball flying out into the room, the ball will automatically change its position and balance instantly. This eliminates the risk of damaging the rotating body. Also, as a generator installed at the end of the rotating body,
By providing a DC power generating coil on the rotating body and providing a controllable magnetic pole outside the rotating body, there is an advantage that a slip ring for energizing the movable pin 7 driving power source is not required.
第１図は本発明の装置の実施例を示す一部切断側面図、
第２図は第１図の［−ＩＩ矢視図、第３図は回転体の回
転速度と振幅の関係図、第４図は回転噴霧式金属粉末製
造装置の概略図、第５図は第４図の円板上に金属が付着
した状態を示す説明図である。
１は回転軸、２は円板、３は部屋、４は穴、５はばね至
、６は鋼球、７は可動ピン、８は圧縮ばね、１０は可動
ピン駆動用コイル、１１は直流発電用コイル、１５は励
磁用直流電源、１６は回転計を示す。FIG. 1 is a partially cutaway side view showing an embodiment of the device of the present invention;
Fig. 2 is a view taken from the [-II arrow in Fig. 1, Fig. 3 is a diagram showing the relationship between the rotation speed and amplitude of the rotating body, Fig. 4 is a schematic diagram of a rotary atomizing metal powder manufacturing device, and Fig. 5 is a diagram showing the relationship between the rotational speed and amplitude of the rotating body. FIG. 4 is an explanatory diagram showing a state in which metal is attached to the disk of FIG. 4; 1 is a rotating shaft, 2 is a disk, 3 is a chamber, 4 is a hole, 5 is a spring, 6 is a steel ball, 7 is a movable pin, 8 is a compression spring, 10 is a coil for movable pin drive, 11 is a DC power generator 15 is a DC power source for excitation, and 16 is a tachometer.
Claims (1)
その中で、バランス用の複数個の球が動き回れるように
し、該部屋の底面所要個所に、回転体の軸芯方向に延び
る穴を設け、該穴に配した可動ピンをばねで下方へ引き
下げておくようにすると共に、該可動ピンの途中の周り
に可動ピン駆動用コイルを配設し、且つ上記回転体の端
部には、発電機を設け、該発電機と上記可動ピン駆動用
コイルを電気的に接続し、更に、回転体の回転計と上記
発電機の制御装置とを接続し、上記部屋内に複数個の球
を収納すると共に粘性液を充満したことを特徴とする回
転体のアンバランス自動平衡装置。1) A room is provided in the rotating body that is concentric with the axis of the rotating body, so that multiple balls for balance can move around in the room, and the axis of the rotating body is placed at required locations on the bottom of the room. A hole extending in the direction of A generator is provided at the end, the generator is electrically connected to the movable pin driving coil, and a tachometer of the rotating body is connected to a control device for the generator, and the generator is installed in the room. An unbalanced automatic balancing device for a rotating body, characterized by storing a plurality of balls and being filled with a viscous liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16231185A JPS6224053A (en) | 1985-07-23 | 1985-07-23 | Automatic balancing device for rotary body in imbalance state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16231185A JPS6224053A (en) | 1985-07-23 | 1985-07-23 | Automatic balancing device for rotary body in imbalance state |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6224053A true JPS6224053A (en) | 1987-02-02 |
Family
ID=15752103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16231185A Pending JPS6224053A (en) | 1985-07-23 | 1985-07-23 | Automatic balancing device for rotary body in imbalance state |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6224053A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5592858A (en) * | 1992-05-21 | 1997-01-14 | Eti Technologies Inc. | Weight compensating method and apparatus |
| US5605078A (en) * | 1992-05-21 | 1997-02-25 | Eti Technologies Inc. | Weight compensating method and apparatus |
| US5613408A (en) * | 1992-05-21 | 1997-03-25 | Eti Technologies Inc. | Weight compensating method and apparatus |
| US5724862A (en) * | 1992-05-21 | 1998-03-10 | Eti Technologies Inc. | Dynamic balancing method and apparatus |
| US5845542A (en) * | 1992-05-21 | 1998-12-08 | Eti Technologies Inc. | Dynamic balancing method and apparatus |
| DE19711726B4 (en) * | 1997-03-20 | 2005-08-25 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Device for unbalance compensation of a rotor |
| KR100759597B1 (en) * | 2006-03-24 | 2007-09-18 | 한국기계연구원 | Ball balance for vertical rotor with the balancing room |
| KR100759596B1 (en) | 2006-03-23 | 2007-09-18 | 한국기계연구원 | Ball balance for vertical rotor |
-
1985
- 1985-07-23 JP JP16231185A patent/JPS6224053A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5592858A (en) * | 1992-05-21 | 1997-01-14 | Eti Technologies Inc. | Weight compensating method and apparatus |
| US5605078A (en) * | 1992-05-21 | 1997-02-25 | Eti Technologies Inc. | Weight compensating method and apparatus |
| US5613408A (en) * | 1992-05-21 | 1997-03-25 | Eti Technologies Inc. | Weight compensating method and apparatus |
| US5711190A (en) * | 1992-05-21 | 1998-01-27 | Eti Technologies Inc. | Weight compensating method and apparatus |
| US5724862A (en) * | 1992-05-21 | 1998-03-10 | Eti Technologies Inc. | Dynamic balancing method and apparatus |
| US5768951A (en) * | 1992-05-21 | 1998-06-23 | Eti Technologies Inc. | Dynamic balancing method and apparatus |
| US5816115A (en) * | 1992-05-21 | 1998-10-06 | Eti Technologies Inc. | Weight compensating method and apparatus |
| US5829318A (en) * | 1992-05-21 | 1998-11-03 | Eti Technologies Inc. | Dynamic balancing method and apparatus |
| US5845542A (en) * | 1992-05-21 | 1998-12-08 | Eti Technologies Inc. | Dynamic balancing method and apparatus |
| DE19711726B4 (en) * | 1997-03-20 | 2005-08-25 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Device for unbalance compensation of a rotor |
| KR100759596B1 (en) | 2006-03-23 | 2007-09-18 | 한국기계연구원 | Ball balance for vertical rotor |
| KR100759597B1 (en) * | 2006-03-24 | 2007-09-18 | 한국기계연구원 | Ball balance for vertical rotor with the balancing room |
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