JPH05280957A - Apparatus for measuring eccentricity of cylindrical work - Google Patents
Apparatus for measuring eccentricity of cylindrical workInfo
- Publication number
- JPH05280957A JPH05280957A JP7723492A JP7723492A JPH05280957A JP H05280957 A JPH05280957 A JP H05280957A JP 7723492 A JP7723492 A JP 7723492A JP 7723492 A JP7723492 A JP 7723492A JP H05280957 A JPH05280957 A JP H05280957A
- Authority
- JP
- Japan
- Prior art keywords
- inner diameter
- cylindrical work
- ferrule
- diameter portion
- periphery
- 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.)
- Granted
Links
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は円筒ワークの内径部と外
径部の同心度を測定する装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for measuring the concentricity between the inner diameter portion and the outer diameter portion of a cylindrical work.
【０００２】[0002]
【従来技術及びその課題】従来、光ファイバーの接続に
用いるフェルールのように円筒形状の外径と内径とに高
い同心度を要求される円筒ワークの同心度を測定するた
めに、図３に示す同心度測定装置が用いられていた。2. Description of the Related Art Conventionally, the concentricity shown in FIG. 3 is used to measure the concentricity of a cylindrical work, such as a ferrule used for connecting optical fibers, which requires a high degree of concentricity in the outer and inner diameters of a cylindrical shape. A degree measuring device was used.
【０００３】図３の同心度測定装置による測定方法は、
円筒ワーク２１の内径部に両端からピン２２を挿入して
支持し、この状態で回転機２３により円筒ワーク２１を
回転させ、分解能１μｍを有する電気マイクロゲージ２
４を外径部に当ててその同心度を測定するものである。The measuring method by the concentricity measuring device of FIG.
The pins 22 are inserted into the inner diameter portion of the cylindrical work 21 from both ends to support the cylindrical work 21, and the cylindrical work 21 is rotated by the rotating machine 23 in this state, and the electric micro gauge 2 having a resolution of 1 μm is obtained.
4 is applied to the outer diameter portion to measure its concentricity.
【０００４】しかしながら、前記従来方法によると内径
部をピン２２で支えるために、この内径が小さければ小
さい程、ピン２２も細くなるためにピン２２の加工が難
しく、また、折れやすくなる。However, according to the above-mentioned conventional method, since the inner diameter portion is supported by the pin 22, the smaller the inner diameter, the thinner the pin 22 becomes, so that the processing of the pin 22 is difficult and the pin 22 is easily broken.
【０００５】また、この方法で測定されるのはピン２２
を中心とする回転軸に対する外径部の同心度であって、
ピン２２と内径とは完全に一致しないために正確な測定
はできず、ピン２２のブレや、ゲージの誤差にも測定結
果は大きく影響されてしまう。The pin 22 is measured by this method.
Is the concentricity of the outer diameter portion with respect to the rotation axis centered at
Since the pin 22 and the inner diameter do not completely coincide with each other, accurate measurement cannot be performed, and the measurement result is greatly affected by the deviation of the pin 22 and the gauge error.
【０００６】さらに、測定にあたってはピン２２に対し
て円筒ワーク２１を着脱する時間が特に多くかかってし
まう。Further, in the measurement, it takes a particularly long time to attach / detach the cylindrical work 21 to / from the pin 22.
【０００７】本発明の目的は上記従来技術の課題を解決
するために、測定精度が高く、測定作業の容易な円筒ワ
ークの同心度測定装置を提供することである。SUMMARY OF THE INVENTION It is an object of the present invention to provide a concentricity measuring device for a cylindrical work, which has a high measurement accuracy and facilitates the measurement work, in order to solve the above problems of the prior art.
【０００８】[0008]
【課題を解決するための手段】上記課題を解決するため
に本発明の円筒ワークの同心度測定装置は、内径部を有
する円筒ワークがその外径部を接して位置決めされる溝
を有する位置決め手段と、前記位置決めされた状態で円
筒ワークを前記溝に対して円周方向に回転させる回転手
段と、前記回転される円筒ワークの一方の端面から内径
部内に光を入射させる光源手段と、前記回転される円筒
ワークの他方の端面に配設され円筒ワークの内径部縁を
含む所定エリアを撮像する撮像手段と、前記撮像手段か
ら出力されるアナログ信号をデジタル信号に変換するＡ
／Ｄ変換手段とを具備し、前記Ａ／Ｄ変換されたデジタ
ル信号に基き撮像された前記内径部縁の振れ幅を検出す
ることにより前記外径部と内径部の同心度を測定するも
のである。In order to solve the above problems, a concentricity measuring device for a cylindrical work according to the present invention is provided with a positioning means having a groove for positioning a cylindrical work having an inner diameter portion in contact with the outer diameter portion thereof. Rotating means for rotating the cylindrical work in the circumferential direction with respect to the groove in the positioned state, light source means for causing light to enter the inner diameter portion from one end face of the rotated cylindrical work, And an image pickup means arranged on the other end surface of the cylindrical work and for picking up an image of a predetermined area including the inner peripheral edge of the cylindrical work, and A for converting an analog signal output from the image pickup means into a digital signal.
A D / D conversion means is provided, and the degree of concentricity between the outer diameter portion and the inner diameter portion is measured by detecting the swing width of the edge of the inner diameter portion imaged based on the A / D converted digital signal. is there.
【０００９】[0009]
【実施例】図１は本発明の一実施例を説明するフェルー
ルの同心度測定装置の構成図で、本実施例の測定装置は
フェルール１を載置してその外径部の位置決めを行うＶ
溝を有するＶブロック２、このフェルール１をＶ溝に載
置した状態で円周方向に回転させるゴムローラー３、回
転するフェルール１の一端から内径部内に光を入射させ
る光源４及びライト５、フェルール１の他端に配設され
てフェルール１の内径部縁Ｅを含む微小な所定エリアＳ
を拡大して撮像するためのレンズ６及びテレビカメラ
７、テレビカメラ７から出力されるアナログ信号をＡ／
Ｄ変換してデジタル信号にする２値化装置８、この変換
されたデジタル信号に基づき所定エリア像を表示するモ
ニターテレビ９から構成される。1 is a block diagram of a concentricity measuring device for a ferrule for explaining an embodiment of the present invention. In the measuring device of this embodiment, a ferrule 1 is mounted and the outer diameter portion of the ferrule 1 is positioned V.
A V block 2 having a groove, a rubber roller 3 which rotates the ferrule 1 in a circumferential direction in a state where the ferrule 1 is placed in the V groove, a light source 4 and a light 5 which cause light to enter the inner diameter portion from one end of the rotating ferrule 1, a ferrule 1 is a minute predetermined area S including the inner peripheral edge E of the ferrule 1 disposed at the other end of the ferrule 1.
The lens 6 and the TV camera 7 for enlarging and capturing the image of the analog signal output from the TV camera 7.
It is composed of a binarization device 8 which is D-converted into a digital signal, and a monitor television 9 which displays a predetermined area image based on the converted digital signal.
【００１０】図２（ａ）（ｂ）は上記構成に基づきＶブ
ロック２に載置されて回転されるフェルール１の内径部
縁Ｅを含む所定エリアＳをモニターテレビ９に表示した
状態を説明するもので、内径部縁Ｅが（ａ）の状態から
フェルール１が回転してその振れ幅Ｗが最大となった位
置が（ｂ）の状態である。この最大の振れ幅Ｗを測定す
ることによりフェルール１の外径部と内径部の同心度が
測定できる。本実施例のようにモニターテレビ９に所定
エリアＳを映し出して人が同心度を測定する場合には、
予めモニターテレビ９にスケールを付けておけばよい。2 (a) and 2 (b) illustrate a state in which a predetermined area S including the inner diameter portion edge E of the ferrule 1 placed on the V block 2 and rotated based on the above configuration is displayed on the monitor television 9. In the state (b), the ferrule 1 rotates from the state where the edge E of the inner diameter portion is (a) and the runout width W thereof is maximized. The concentricity between the outer diameter portion and the inner diameter portion of the ferrule 1 can be measured by measuring the maximum wobbling width W. When the person measures the concentricity by displaying the predetermined area S on the monitor TV 9 as in the present embodiment,
It is sufficient to attach a scale to the monitor TV 9 in advance.
【００１１】なお、上記実施例ではモニターテレビ９を
用いて人が測定を行う例を説明したが本発明はこれに限
定されることはなく、２値化装置８の出力側に２値検出
回路を接続することにより２値化装置８から出力される
デジタル信号によって内径部縁Ｅの位置データをメモリ
して最大の振れ幅Ｗを検出することにより同心度の測定
を自動的に行うこともできる。In the above embodiment, an example in which a person uses the monitor television 9 to perform measurement has been described, but the present invention is not limited to this, and a binary detection circuit is provided on the output side of the binarization device 8. It is also possible to automatically measure the concentricity by storing the position data of the inner edge portion E by the digital signal output from the binarizing device 8 by connecting to the memory and detecting the maximum swing width W. .
【００１２】上記のように本発明の一実施例によれば、
内径部縁Ｅを含む所定エリアＳを拡大して撮像し、さら
にＡ／Ｄ変換してコントラストを高めることにより内径
部縁Ｅの境界を明瞭に判定できる。As described above, according to one embodiment of the present invention,
By enlarging and imaging the predetermined area S including the inner diameter portion edge E, and further performing A / D conversion to increase the contrast, the boundary of the inner diameter portion edge E can be clearly determined.
【００１３】上記の構成に基づいて高倍率レンズと大型
モニターテレビを用いたところ、０．２μｍの分解能を
得ることができた。When a high magnification lens and a large monitor television were used based on the above construction, a resolution of 0.2 μm could be obtained.
【００１４】また、この装置を用いれば熟練者、初心者
に関係なく極めて高精度に同心度を測定でき、それに要
する時間も数秒で足りる。また、測定を自動化すれば極
めて短時間に多数の測定が可能となる。Further, by using this apparatus, the concentricity can be measured with extremely high accuracy regardless of whether it is an expert or a beginner, and the time required for this can be several seconds. Further, if the measurement is automated, a large number of measurements can be performed in an extremely short time.
【００１５】なお、上記実施例ではフェルールのように
単純な円筒形状の例を説明したが、例えば円錐形状のも
のなどでも可能で、この場合には図１のＶブロックを傾
けることにより同様にその内径部と外径部の同心度が測
定できる。In the above embodiment, an example of a simple cylindrical shape such as a ferrule has been described, but a conical shape is also possible. In this case, the V block in FIG. The concentricity of the inner diameter part and the outer diameter part can be measured.
【００１６】[0016]
【発明の効果】上記の通り本発明は構成されているの
で、高精度にしかも短時間に円筒ワークの同心度の測定
が行える。Since the present invention is configured as described above, the concentricity of a cylindrical work can be measured with high accuracy and in a short time.
【図１】本発明の一実施例を説明するフェルールの同心
度測定装置の構成図である。FIG. 1 is a configuration diagram of a concentricity measuring device for a ferrule for explaining an embodiment of the present invention.
【図２】（ａ）（ｂ）は回転されるフェルール１の内径
部縁Ｅを含む所定エリアＳをモニターテレビ９に表示し
た状態の説明図である。2 (a) and 2 (b) are explanatory views showing a state in which a predetermined area S including an inner diameter portion edge E of a rotated ferrule 1 is displayed on a monitor television 9. FIG.
【図３】従来の円筒ワークの同心度測定装置の説明図で
ある。FIG. 3 is an explanatory view of a conventional concentricity measuring device for a cylindrical work.
１ フェルール ２ Ｖブロック ３ ゴムローラー ４ 光源 ７ カメラ ８ ２値化装置 ９ モニターテレビ Ｅ 内径部縁 Ｓ 所定エリア 1 ferrule 2 V block 3 rubber roller 4 light source 7 camera 8 binarization device 9 monitor TV E inner diameter edge S predetermined area
Claims (1)
接して位置決めされる溝を有する位置決め手段と、前記
位置決めされた状態で円筒ワークを前記溝に対して円周
方向に回転させる回転手段と、前記回転される円筒ワー
クの一方の端面から内径部内に光を入射させる光源手段
と、前記回転される円筒ワークの他方の端面に配設され
円筒ワークの内径部縁を含む所定エリアを撮像する撮像
手段と、前記撮像手段から出力されるアナログ信号をデ
ジタル信号に変換するＡ／Ｄ変換手段とを具備し、前記
Ａ／Ｄ変換されたデジタル信号に基き撮像された前記内
径部縁の振れ幅を検出することにより前記外径部と内径
部の同心度を測定することを特徴とする円筒ワークの同
心度測定装置。1. A positioning means having a groove for positioning a cylindrical work having an inner diameter part in contact with the outer diameter part, and a rotation for rotating the cylindrical work in the circumferential direction with respect to the groove in the positioned state. Means, light source means for causing light to enter the inner diameter portion from one end surface of the rotated cylindrical work, and a predetermined area including the inner diameter portion edge of the cylindrical work disposed on the other end surface of the rotated cylindrical work. An image pickup means for picking up an image and an A / D conversion means for converting an analog signal output from the image pickup means into a digital signal are provided, and the edge of the inner diameter portion imaged based on the A / D converted digital signal is included. A concentricity measuring device for a cylindrical work, which measures the concentricity between the outer diameter portion and the inner diameter portion by detecting the swing width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07723492A JP3217434B2 (en) | 1992-03-31 | 1992-03-31 | Concentricity measuring device for cylindrical work |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07723492A JP3217434B2 (en) | 1992-03-31 | 1992-03-31 | Concentricity measuring device for cylindrical work |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05280957A true JPH05280957A (en) | 1993-10-29 |
| JP3217434B2 JP3217434B2 (en) | 2001-10-09 |
Family
ID=13628179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP07723492A Expired - Lifetime JP3217434B2 (en) | 1992-03-31 | 1992-03-31 | Concentricity measuring device for cylindrical work |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3217434B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7458168B2 (en) | 2006-02-03 | 2008-12-02 | Olympus Medical Systems Corp. | Concentricity measuring apparatus and method, squareness measuring apparatus and method, and concentricity-squareness measuring apparatus and method |
| JP2014122844A (en) * | 2012-12-21 | 2014-07-03 | Seiko Instruments Inc | Ferrule imaging apparatus, ferrule classification apparatus, ferrule imaging method, ferrule imaging program and storage medium |
-
1992
- 1992-03-31 JP JP07723492A patent/JP3217434B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7458168B2 (en) | 2006-02-03 | 2008-12-02 | Olympus Medical Systems Corp. | Concentricity measuring apparatus and method, squareness measuring apparatus and method, and concentricity-squareness measuring apparatus and method |
| JP2014122844A (en) * | 2012-12-21 | 2014-07-03 | Seiko Instruments Inc | Ferrule imaging apparatus, ferrule classification apparatus, ferrule imaging method, ferrule imaging program and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3217434B2 (en) | 2001-10-09 |
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