JPS63221223A - Forming device for shaft torsional vibration measuring mark - Google Patents
Forming device for shaft torsional vibration measuring markInfo
- Publication number
- JPS63221223A JPS63221223A JP62053974A JP5397487A JPS63221223A JP S63221223 A JPS63221223 A JP S63221223A JP 62053974 A JP62053974 A JP 62053974A JP 5397487 A JP5397487 A JP 5397487A JP S63221223 A JPS63221223 A JP S63221223A
- Authority
- JP
- Japan
- Prior art keywords
- mark
- forming member
- mark forming
- gear
- torsional vibration
- 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
- 239000002184 metal Substances 0.000 claims description 6
- 238000001514 detection method Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
Description
【発明の詳細な説明】
【発明の目的〕
(産業上の利用分野)
本発明は回転機械の軸捩れ振動計測用マークの形成装置
に関する。DETAILED DESCRIPTION OF THE INVENTION OBJECTS OF THE INVENTION (Field of Industrial Application) The present invention relates to an apparatus for forming marks for measuring shaft torsional vibrations of rotating machines.
(従来の技術)
従来タービン発電機の軸捩れ振動を測定する場合、所定
の軸位置に歯車を取付け、この歯車の歯 一部に電
磁式ピックアップを対向配置し、1回転に歯車の歯数に
等しいパルス信号を得て行っている。(Prior technology) Conventionally, when measuring the shaft torsional vibration of a turbine generator, a gear is installed at a predetermined shaft position, and an electromagnetic pickup is placed oppositely on a part of the gear's teeth. This is done by obtaining equal pulse signals.
このパルス信号を処理して捩れ振動を検出する場合軸上
2点間の1回転について同一数のパルスから両信号の位
相差を1ピツチ毎に求めて2点間の相対軸捩れ角を得る
方法と各々の信号の急変する成分すなわち回転変動に相
当する成分を検出する方法がある。When processing this pulse signal to detect torsional vibration, the relative shaft torsion angle between the two points is obtained by calculating the phase difference between the two signals for each pitch from the same number of pulses for one rotation between two points on the shaft. There is a method of detecting abruptly changing components of each signal, that is, components corresponding to rotational fluctuations.
これらのいずれの方法に於ても高次の軸捩れモードまで
も検出しようとすると軸上に多くの歯車を配置する必要
がある。そしてこの歯車の精度が測定精度を左右する。In any of these methods, in order to detect even high-order shaft torsion modes, it is necessary to arrange many gears on the shaft. The accuracy of this gear determines the measurement accuracy.
(発明が解決しようとする問題点)
加工精度の良い一体加工歯車を既設機に装着することは
分解組立にぼう大な時間と労力を要する。(Problems to be Solved by the Invention) Attaching an integrally machined gear with good machining accuracy to an existing machine requires a great deal of time and effort for disassembly and assembly.
一方2分割歯車は比較的容易に装着できるが、組立てに
よる変形があり精度良い歯車を軸上に構成できない。On the other hand, although a two-part gear can be mounted relatively easily, it is deformed during assembly, and a highly accurate gear cannot be constructed on the shaft.
本発明は回転軸表面に軸捩れ振動計測用マークを簡単に
精度良く形成する装置を提供することを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to provide a device that easily and accurately forms marks for measuring shaft torsional vibration on the surface of a rotating shaft.
(問題点を解決するための手段)
上記目的を達成するために、本発明においては回転軸の
一部に同心に設けられた金属性歯車と、この歯部に対向
配置した電磁式ピックアップと、このピックアップから
発生された交流信号波形を矩形波に整形する制御装置と
5回転軸の捩れ振動を測定する位置に設けられた被マー
ク形成部材と、この被マーク形成部材に前記矩形波に応
じてマークを形成するマーク形成部材とを備えたことを
特徴とする軸捩れ振動計測用マークの形成装置を提供す
る。(Means for Solving the Problems) In order to achieve the above object, the present invention includes a metal gear provided concentrically on a part of the rotating shaft, an electromagnetic pickup arranged opposite to the toothed part, A control device that shapes the alternating current signal waveform generated from the pickup into a rectangular wave, a mark forming member provided at a position to measure the torsional vibration of the five rotating shafts, and a mark forming member provided with a control device that shapes the alternating current signal waveform generated from the pickup into a rectangular wave. Provided is a mark forming device for measuring shaft torsional vibration, characterized by comprising a mark forming member for forming a mark.
(作 用)
このように構成されたものにおいては、回転軸が一部ス
ピードで回転したとき、歯車と電磁式ピックアップで構
成される磁気回路のインピーダンスの変化により電磁式
ピックアップには交流信号が発生する。(Function) In a device configured in this way, when the rotating shaft rotates at a certain speed, an alternating current signal is generated in the electromagnetic pickup due to a change in the impedance of the magnetic circuit consisting of the gear and the electromagnetic pickup. do.
この信号は制御装置により矩形波に成形され、この波形
に応じてマーク形成部材が駆動されるので歯車の歯数と
同一数の規則正しいマークが回転軸上の被マーク形成部
材に形成される。This signal is shaped into a rectangular wave by the control device, and the mark forming member is driven in accordance with this waveform, so that regular marks, the same number as the number of teeth of the gear, are formed on the mark forming member on the rotating shaft.
(実施例)
実施例1
第1図に本発明の第1の実施例を示す、第2図は第1図
の“X”部詳細であって、マーク0は平面に展開して示
しである。Q)はタービン発電機装置の軸■端部に設け
られた歯車であり、これに対向して2個の電磁式ピック
アップ■が回転軸■の中心に対して180° の位置に
取付けられている。(Example) Example 1 Fig. 1 shows the first embodiment of the present invention. Fig. 2 is a detail of the "X" part in Fig. 1, and mark 0 is shown expanded on a plane. . Q) is a gear installed at the end of the shaft of a turbine generator, and two electromagnetic pickups are mounted opposite to it at 180 degrees to the center of the rotating shaft. .
2個の電磁式ピックアップ■の信号は合成され制御装置
!(2)へ送られる。■は所定の回転軸■に対向して配
置されているマーク形成部材である電歪式アクチュエー
タであり1回転軸■の周上には被マーク形成部材である
ところの圧力を受けると変色する感圧紙■がはりつけら
れて、いる。尚、■はタービン、■は発電機である。The signals from the two electromagnetic pickups ■ are combined into a control device! Sent to (2). ■ is an electrostrictive actuator that is a mark forming member that is placed facing a predetermined rotation axis ■, and on the circumference of the rotation axis ■ is a mark forming member that changes color when subjected to pressure. Pressed paper■ is pasted on it. In addition, ■ is a turbine, and ■ is a generator.
このようにして回転軸■が一部スピードで回転すると、
歯車ωと電磁式ピックアップ■で構成される磁気回路の
インピーダンスが周期的に変化し電磁式ピックアップ■
には交流信号が発生する。When the rotating shaft ■ rotates at a partial speed in this way,
The impedance of the magnetic circuit consisting of the gear ω and the electromagnetic pickup changes periodically, resulting in an electromagnetic pickup.
An alternating current signal is generated.
この2個の電磁式ピックアップ■は対称の位置にあるか
ら歯車■に振動があって波形歪が生じても。These two electromagnetic pickups (■) are in symmetrical positions, so even if the gear (■) is vibrated and waveform distortion occurs.
合成により互いに歪をキセンセルして規則正しい交流信
号が制御装置(2)へ送られる。制御装W1(イ)では
矩形波信号に成形し、この波形にそって電歪式アクチュ
エータ■を作動させる。電歪式アクチュエータ■は周期
的に感圧紙(0に圧力を加え葛、従って回転軸■の1周
にわたって設けられた感圧紙0には歯車■の歯数と同数
のマーク0が刻まれる。By combining, the distortions are mutually xencelled and a regular AC signal is sent to the control device (2). The control device W1 (a) shapes the signal into a rectangular wave signal, and operates the electrostrictive actuator (2) along this waveform. The electrostrictive actuator (2) periodically applies pressure to the pressure-sensitive paper (0), so that the same number of marks 0 as the number of teeth of the gear (2) are engraved on the pressure-sensitive paper (0) provided over one rotation of the rotating shaft (2).
尚、歯車■の振動が小さいときはピックアップ■は、1
個だけにしてもよい。In addition, when the vibration of the gear ■ is small, the pickup ■ is 1
You can choose only one.
電歪式アクチュエータ■は応答が速く回転軸■が回転中
でも同軸軸■から反力を受ける時間を短かくすることが
できる。The electrostrictive actuator (2) has a fast response and can shorten the time it receives reaction force from the coaxial shaft (2) even when the rotating shaft (2) is rotating.
回転軸■の全周に設けられた感圧紙(0に精度が良、く
歯車中と同一数の縞模用のマーク0が形成されるから、
これに光強度に応じた電気信号に変換する光電式の検出
器(図示せず)を対向させて回転中のパルス信号を得る
ことができるから、従来技術の項で述べた2つの方法で
軸捩れ振動を計測することができる。Pressure-sensitive paper provided around the entire circumference of the rotating shaft (2) has good accuracy in marking 0, and the same number of striped marks 0 as in the gear are formed.
By facing this with a photoelectric detector (not shown) that converts it into an electrical signal according to the light intensity, it is possible to obtain a pulse signal during rotation. Torsional vibration can be measured.
実施例2 次に第2の実施例について第3図を参照して説明する。Example 2 Next, a second embodiment will be described with reference to FIG.
第3図に示したのは、歯車のからの信号をもとに制御さ
れるマーク形成部材であるレーザ装置(5a)と、回転
軸上に設けられる被マーク形成部材であるところの表面
に光沢を有する金属薄帯(6a)を用いたものであって
、レーザ光の照射によって金属光沢面を荒すことにより
、光の反射率を下げ。Figure 3 shows a laser device (5a) that is a mark forming member that is controlled based on signals from a gear, and a glossy surface of a mark forming member that is installed on the rotating shaft. The metal ribbon (6a) is used, and the reflectance of light is lowered by roughening the metallic luster surface by irradiation with laser light.
縞模様のマークを形成するものである。他は第1図と同
様である。It forms a striped mark. The rest is the same as in FIG.
このようにすると非接触で回転軸上にマーキングできる
利点がある。This has the advantage of being able to mark the rotating shaft without contact.
実施例3
次に第3の実施例について、第4図を参照して説明する
。Example 3 Next, a third example will be described with reference to FIG. 4.
この第4図は、第3図のレーザ装置に代えて磁気ヘッド
(5b)、金属薄帯に代えて磁気テープ(6b)を用い
るものである。4, a magnetic head (5b) is used instead of the laser device shown in FIG. 3, and a magnetic tape (6b) is used instead of the metal ribbon.
この第4図の磁気ヘッド方式も非接触で回転軸上にマー
キングできる利点がある。The magnetic head system shown in FIG. 4 also has the advantage of being able to mark on the rotating shaft without contact.
軸捩れ振動計測の際、第3図のレーザ方式で形成した縞
模用マーク■に対しては光電式の検出器を、第4図の磁
気ヘッド方式で形成した磁気的な縞模様マークに対して
は磁気ヘッド式の検出器をそれぞれ対向設置することに
より回転中のパルス信号を得ることができるから軸捩れ
振動を計測できることは勿論である。When measuring shaft torsional vibration, a photoelectric detector is used for the striped pattern mark (■) formed by the laser method shown in Figure 3, and a photoelectric detector is used for the magnetic striped pattern mark formed by the magnetic head method shown in Figure 4. By arranging magnetic head type detectors facing each other, it is possible to obtain a pulse signal during rotation, so it is of course possible to measure shaft torsional vibration.
以上説明したように本発明のマークの形成装置によれば
新設・既設機を問わず露出している回転軸表面さえあれ
ば精度の良いピッチのマークを回転軸表面に形成するこ
とができる。As explained above, according to the mark forming apparatus of the present invention, marks with a high precision pitch can be formed on the surface of the rotating shaft regardless of whether it is a new machine or an existing machine, as long as the rotating shaft surface is exposed.
基準信号を得る高精度に加工された歯車は一般にタービ
ン発電機では回転スピード計測のため設けられており、
これを利用することもできるから回転軸上には歯車を新
たに設ける必要はない。A highly precisely machined gear that obtains a reference signal is generally installed in a turbine generator to measure the rotational speed.
Since this can also be utilized, there is no need to newly provide a gear on the rotating shaft.
従って軸捩れ振動の計測を高精度に且つ簡便に行なえる
マークを形成する装置を提供することができる。Therefore, it is possible to provide an apparatus for forming marks that can easily and accurately measure shaft torsional vibrations.
第1図は本発明のマークの形成装置の第1の実施例を示
すブロック図、第2図は第1図の“X”部を示すマーク
部展開立面図、第3図および第4図は第2、第3の実施
例の要部を示すマーク部展開立面図である。
1・・・歯 車、 2・・・回転軸、3・・・
ピックアップ、 4・・・制御装置、5・・・マーク
形成部材であるアクチュエータ、5a・・・マーク形成
部材であるレーザ装置。
5b・・・マーク形成部材である磁気ヘッド、6・・・
被マーク形成部材である感圧紙、6a・・・被マーク形
成部材である金属薄帯、6b・・・被マーク形成部材で
ある磁気テープ、9・・・マーク。FIG. 1 is a block diagram showing a first embodiment of the mark forming apparatus of the present invention, FIG. 2 is a developed elevational view of the mark section showing the "X" section in FIG. 1, and FIGS. 3 and 4. 2 is a developed elevational view of a mark portion showing essential parts of the second and third embodiments. 1... Gear, 2... Rotating shaft, 3...
pickup, 4... control device, 5... actuator which is a mark forming member, 5a... laser device which is a mark forming member. 5b... Magnetic head which is a mark forming member, 6...
Pressure-sensitive paper is a member to be marked, 6a...Metal ribbon is a member to be marked, 6b...Magnetic tape is a member to be marked, 9...Marks.
Claims (1)
この歯部に対向配置した電磁式ピックアップと、このピ
ックアップから発生された交流信号波形を矩形波に成形
する制御装置と、回転軸の捩れ振動を測定する位置に設
けられた被マーク形成部材と、この被マーク形成部材に
前記矩形波に応じてマークを形成するマーク形成部材と
を備えたことを特徴とする軸捩れ振動計測用マークの形
成装置。 (2)被マーク形成部材は感圧紙とし、マーク形成部材
は電歪式アクチュエータとしたことを特徴とする特許請
求の範囲第1項記載の軸捩れ振動計測用マークの形成装
置。 (3)被マーク形成部材は表面に光沢を有する金属薄帯
とし、マーク形成部材はレーザ装置としたことを特徴と
する特許請求の範囲第1項記載の軸捩れ振動計測用マー
クの形成装置。 (2)被マーク形成部材は磁気テープとし、マーク形成
部材は磁気ヘッドとしたことを特徴とする特許請求の範
囲第1項記載の軸捩れ振動計測用マークの形成装置。[Claims] (1) A metal gear provided concentrically on a part of the rotating shaft;
an electromagnetic pickup disposed opposite to the tooth, a control device that shapes the AC signal waveform generated by the pickup into a rectangular wave, and a mark forming member disposed at a position to measure torsional vibration of the rotating shaft; A mark forming apparatus for measuring axial torsional vibration, comprising a mark forming member that forms marks on the mark forming member according to the rectangular wave. (2) The apparatus for forming a mark for measuring shaft torsional vibration according to claim 1, wherein the mark forming member is a pressure-sensitive paper, and the mark forming member is an electrostrictive actuator. (3) The apparatus for forming a mark for measuring axial torsional vibration according to claim 1, wherein the mark forming member is a thin metal strip having a glossy surface, and the mark forming member is a laser device. (2) The mark forming apparatus for measuring axial torsional vibrations according to claim 1, wherein the mark forming member is a magnetic tape, and the mark forming member is a magnetic head.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62053974A JPS63221223A (en) | 1987-03-11 | 1987-03-11 | Forming device for shaft torsional vibration measuring mark |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62053974A JPS63221223A (en) | 1987-03-11 | 1987-03-11 | Forming device for shaft torsional vibration measuring mark |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS63221223A true JPS63221223A (en) | 1988-09-14 |
Family
ID=12957619
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62053974A Pending JPS63221223A (en) | 1987-03-11 | 1987-03-11 | Forming device for shaft torsional vibration measuring mark |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS63221223A (en) |
-
1987
- 1987-03-11 JP JP62053974A patent/JPS63221223A/en active Pending
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