JPH02176408A - Body-shape measuring apparatus - Google Patents
Body-shape measuring apparatusInfo
- Publication number
- JPH02176408A JPH02176408A JP30227688A JP30227688A JPH02176408A JP H02176408 A JPH02176408 A JP H02176408A JP 30227688 A JP30227688 A JP 30227688A JP 30227688 A JP30227688 A JP 30227688A JP H02176408 A JPH02176408 A JP H02176408A
- Authority
- JP
- Japan
- Prior art keywords
- measured
- measurement area
- light
- external
- surface shape
- 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
- 230000037237 body shape Effects 0.000 title 1
- 238000005259 measurement Methods 0.000 claims description 50
- 238000003384 imaging method Methods 0.000 claims description 45
- 238000001514 detection method Methods 0.000 description 16
- 238000010586 diagram Methods 0.000 description 14
- 230000003287 optical effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000007787 solid Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野コ
本発明は、物体各部の外面形状、内面形状、或いは肉厚
を測定するに好適な物体の形状測定装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an object shape measuring device suitable for measuring the outer surface shape, inner surface shape, or wall thickness of each part of an object.
［従来の技術］
例えば化学プラントに用いられている熱交換器のチュー
ブは、余寿命予測等のため、定期的に管内外面の形状を
検査する必要がある。[Prior Art] For example, in order to predict the remaining life of heat exchanger tubes used in chemical plants, it is necessary to periodically inspect the shapes of the inner and outer surfaces of the tubes.
従来、上記チューブの測定は、熱交換器からサンプリン
グされたチューブを半割りし、これの肉厚をポイントマ
イクロメータを用いることにて測定している。Conventionally, the tubes are measured by cutting a tube sampled from a heat exchanger in half and measuring the wall thickness of the tube using a point micrometer.
［発明が解決しようとする課題］
然しなから、上記従来のチューブの形状測定装置にあっ
ては、測定者による誤差を伴い、測定工数も多大である
という不都合がある。[Problems to be Solved by the Invention] However, the conventional tube shape measuring device described above has the disadvantages of being accompanied by errors caused by the measurer and requiring a large number of measuring steps.
尚、チューブの形状を自動測定する方式として、チュー
ブの走行路に定めた測定領域を挟んで相対する２個１組
のレーザセンサを配設し、各レーザセンサにより対応す
るチューブの内外面までの距離を測定し、この測定結果
から当該部位の肉厚を求めるとともに、チューブが１回
走行する毎にレーザ光の投射位置を円周方向に少しづつ
ずらし、この動作を繰り返し行なうことにてチューブの
全周にわたる外面形状、内面形状、或いは肉厚測定を行
なうことも考えられる。In addition, as a method for automatically measuring the shape of a tube, a pair of laser sensors are placed facing each other across a measurement area defined on the tube travel path, and each laser sensor measures the inner and outer surfaces of the corresponding tube. The distance is measured, and the wall thickness of the relevant part is determined from the measurement results. Each time the tube runs, the projection position of the laser beam is shifted slightly in the circumferential direction. By repeating this operation, the thickness of the tube is determined. It is also conceivable to measure the outer surface shape, inner surface shape, or wall thickness over the entire circumference.
然しながら、上記の如くチューブの走行路を挟んで相対
する２個１組のレーザセンサを用いる場合には、上述の
如く、領域に対するチューブの走行動作を何回も繰り返
さない限り、チューブの周方向及び長手方向の各部の外
面形状、内面形状、或いは肉厚測定を行なうことができ
ない。However, when using a pair of laser sensors facing each other across the tube travel path as described above, unless the tube travel operation is repeated many times over the area, the tube circumferential direction and It is not possible to measure the outer surface shape, inner surface shape, or wall thickness of each part in the longitudinal direction.
本発明は、管、中実棒等の物体の各部の外面形状、内面
形状、或いは肉厚を、自動的且つ能率的に測定すること
を目的とする。An object of the present invention is to automatically and efficiently measure the outer surface shape, inner surface shape, or wall thickness of each part of an object such as a pipe or a solid rod.
［課題を解決するための手段］
請求項１に記載の物体の形状測定装置は、被測定体を測
定領域に対し相対的に移動する送り装置と、上記測定領
域の周囲に配置した光源から、該測定領域に位置する被
測定体の外面に環状投射光を投光する外面投光装置と、
上記外面投光装置か投光した環状投射光の上記被測定体
の外面における反射光像を撮像する外面撮像装置と、上
記送り装置により上記測定領域に送り込まれる被測定体
の該送り方向の各部にて、上記外面撮像装置が撮像した
反射光像により該被測定体各部の外面形状を求めるデー
タ処理装置とを有してなるようにしたものである。[Means for Solving the Problems] The object shape measuring device according to claim 1 includes: a feeding device that moves the object to be measured relative to the measurement area; and a light source disposed around the measurement area. an external surface projecting device that projects annular projection light onto the external surface of the object to be measured located in the measurement area;
an external imaging device that captures a reflected light image of the annular projection light projected by the external projecting device on the external surface of the object to be measured, and each part of the object to be measured in the feeding direction that is sent into the measurement area by the feeding device; and a data processing device for determining the outer surface shape of each part of the object to be measured from the reflected light image taken by the outer surface imaging device.
請求項２に記載の物体の形状測定装置は、被測定体を測
定領域に対し相対的に移動する送り装置と、上記測定領
域の周囲に配置した光源から、該測定領域に位置する被
測定体の外面に環状投射光を投光する外面投光装置と、
上記外面投光装置が投光した環状投射光の上記被測定体
の外面における反射光像を撮像する外面撮像装置と、上
記測定領域の中心部に配置した光源から、該測定領域に
位置する上記被測定体の内面に環状投射光を投光する内
面投光装置と、上記内面投光装置が投光した環状投射光
の上記被測定体の内面における反射光像を撮像する内面
撮像装置と、上記送り装置により上記測定領域に送り込
まれる被測定体の該送り方向の各部にて、上記外面撮像
装置が撮像した反射光像により該被測定体各部の外面形
状を求めるとともに、上記内面撮像装置が撮像した反射
光像により該被測定体各部の内面形状を求め、さらにそ
れら外面形状と内面形状に基づいて該被測定体各部の肉
厚を求めるデータ処理装置とを有してなるようにしたも
のである。The object shape measuring device according to claim 2 includes a feeding device that moves the object to be measured relative to the measurement area, and a light source arranged around the measurement area to detect the object to be measured located in the measurement area. an external projection device that projects an annular projection light onto the external surface of the
an external imaging device that captures a reflected light image of the annular projection light projected by the external projecting device on the external surface of the measured object; an inner surface projection device that projects annular projection light onto the inner surface of the object to be measured; an inner surface imaging device that captures a reflected light image of the annular projection light projected by the inner surface projection device on the inner surface of the object to be measured; At each part of the object to be measured in the feeding direction that is sent into the measurement area by the feeding device, the outer surface shape of each part of the object to be measured is determined by the reflected light image taken by the outer surface imaging device, and the inner surface imaging device A data processing device that determines the inner surface shape of each part of the object to be measured based on the captured reflected light image, and further calculates the wall thickness of each part of the object to be measured based on the outer surface shape and inner surface shape. It is.
［作用］
請求項１に記載の物体の形状測定装置によれば、送り装
置により測定領域に対し相対的に移動せしめられ、該測
定領域に送り込まれる被測定体は、その送り方向に交差
する方向（例えば周方向）の外面各部に外面投光装置の
環状投射光を投光せしめられ、外面撮像装置はその反射
光像を撮像する。この時、被測定体は送り装置により連
続して送り込まれその外面各部は順次測定領域を通過す
る。従って、被測定体が測定領域を通過終了する際には
、上記外面投光装置が前述の送り方向に交差する方向の
外面各部に投光した環状投射光が、送り方向（例えば長
手方向）の外面各部にも及び、換言すれば全外面の各部
に及ぶことになる。又、この時、外面撮像装置は被測定
体の全外面に形成せしめられた反射光像を撮像終了する
ことになる。これにより、データ処理装置は、上記外面
撮像装置の撮像結果を得て自動的に、且つ被測定体が測
定領域を１度通過するたけ即ち能率的に、被測定体各部
の外面形状を求めることかできる。[Function] According to the object shape measuring device according to claim 1, the object to be measured is moved relative to the measurement area by the feeding device and fed into the measurement area in a direction intersecting the feeding direction. The annular projection light of the external surface projecting device is projected onto each part of the external surface (for example, in the circumferential direction), and the external surface imaging device captures an image of the reflected light. At this time, the object to be measured is continuously fed by the feeding device, and each part of its outer surface passes through the measurement area one after another. Therefore, when the object to be measured finishes passing through the measurement area, the annular projection light projected onto each part of the outer surface in the direction intersecting the aforementioned feeding direction by the external surface projector is reflected in the feeding direction (e.g., longitudinal direction). It extends to each part of the outer surface, in other words, it extends to each part of the entire outer surface. Also, at this time, the external surface imaging device finishes capturing the reflected light image formed on the entire external surface of the object to be measured. Thereby, the data processing device obtains the imaging results of the external surface imaging device and automatically calculates the outer surface shape of each part of the object to be measured, as long as the object to be measured passes through the measurement area once, that is, efficiently. I can do it.
請求項２に記載の物体の形状測定装置によれは、上記外
面投光装置及び外面撮像装置の機能に加えて、内面投光
装置及び内面撮像装置が機能する。即ち、送り装置によ
り測定領域に対し相対的に移動せしめられ、該測定領域
に送り込まれる被測定体は、その送り方向に交差する方
向（例えば周方向）の内周面に内面投光装置の環状投射
光を投光せしめられ、内面撮像装置はその反射光像を撮
像する。この時、被測定体は送り装置により連続して送
り込まれその内面各部は順次測定領域を通過する。従っ
て、被測定体か測定領域を通過終了する際には、上記内
面投光装置か前述の送り方向に交差する方向の内周面に
投光した環状投射光か、送り方向（例えば長平方向）の
内面各部にも及び、換言すれば全内面の各部に及ぶこと
になる。又、この時、内面撮像装置は被測定体の全内面
に形成せしめられた反射光像を撮像終了することになる
。これにより、データ処理装置は、上記内面撮像装置の
撮像結果を得て自動的に、且つ被測定体が測定領域を１
度通過するたけ即ち能率的に、被測定体各部の内面形状
を求めることかできる。According to the object shape measuring device according to the second aspect, in addition to the functions of the external light projecting device and the external imaging device, the inner surface projecting device and the inner surface imaging device function. That is, the object to be measured, which is moved relative to the measurement area by the feeding device and fed into the measurement area, has the annular shape of the internal light projector on its inner peripheral surface in a direction (for example, circumferential direction) that intersects the feeding direction. The projection light is projected, and the inner surface imaging device captures an image of the reflected light. At this time, the object to be measured is continuously fed by the feeding device, and each part of its inner surface sequentially passes through the measurement area. Therefore, when the object to be measured finishes passing through the measurement area, either the internal light projector or the annular projection light projected onto the inner circumferential surface in the direction intersecting the feeding direction, or the feeding direction (for example, the long plane direction) In other words, it extends to each part of the entire inner surface. Also, at this time, the inner surface imaging device finishes capturing the reflected light image formed on the entire inner surface of the object to be measured. As a result, the data processing device obtains the imaging results of the inner surface imaging device and automatically and
The inner surface shape of each part of the object to be measured can be determined as efficiently as possible.
又、請求項２に記載の本発明によれば、上述の如くにて
求められる被測定体各部の外面形状のデータ、及び内面
形状のデータを突き合わせることにて、自動的且つ能率
的に、被測定体各部の肉Ｊ５を求めることかできる。Further, according to the present invention as set forth in claim 2, by comparing the data of the outer surface shape and the data of the inner shape of each part of the object to be measured, which are obtained as described above, automatically and efficiently, It is possible to determine the thickness J5 of each part of the object to be measured.
［実施例〕
第１図は本発明が適用された形状測定装置の一例を示す
模式図、第２図は外面投光装置と外面撮像装置とを示す
模式図、第３図は内面投光装置と内面撮像装置とを示す
模式図、第４図は表示装置の入力データ表示状態を示す
模式図、第５図は表示装置の出力データ表示状態を示す
模式図、第６図は本発明か適用された形状測定装置の他
の例を示す模式図である。[Example] Fig. 1 is a schematic diagram showing an example of a shape measuring device to which the present invention is applied, Fig. 2 is a schematic diagram showing an external projecting device and an external imaging device, and Fig. 3 is a schematic diagram showing an internal projecting device. FIG. 4 is a schematic diagram showing the input data display state of the display device, FIG. 5 is a schematic diagram showing the output data display state of the display device, and FIG. 6 is a schematic diagram showing the display device according to the present invention. FIG. 3 is a schematic diagram showing another example of the shape measuring device.
第１図の形状測定装置１ｏは、半割りチューブを披１（
１１定体１とするものであり、送り装置１１、外面形状
検出装置１２、内面形状検出装置１３、及びデータ処理
装置１４を有して構成されている。The shape measuring device 1o in FIG.
11, and includes a feeding device 11, an outer surface shape detection device 12, an inner surface shape detection device 13, and a data processing device 14.
送り装置１１は、被測定体１を送りローラ１５により、
外面形状検出装置１２と内面形状検出装置１３か設置さ
れている測定領域に送り込む。この時、被測定体１は上
記測定領域の中心軸０に同心をなす如くに送り込まれる
。送り装置１１は、送り制御部１６によりローラ駆動モ
ータ１７を制御することにて送り速度、送り長さを制御
できる。The feeding device 11 transports the object 1 to be measured by a feeding roller 15.
It is sent into the measurement area where the outer surface shape detection device 12 and the inner surface shape detection device 13 are installed. At this time, the object to be measured 1 is sent so as to be concentric with the central axis 0 of the measurement area. The feed device 11 can control the feed speed and feed length by controlling the roller drive motor 17 using the feed control section 16.
外面形状検出装置１２は、光切断方式（スボッ１〜光）
により被測定体１の外面形状を検出するものてあり、第
２図に示す如く、外面投光装置１８と、カメラ１９Ａと
カメラ１９Ｂとからなる外面撮像装置１９とを有して構
成されている。The external shape detection device 12 uses a light cutting method (Subot 1 to light)
As shown in FIG. 2, the device detects the external shape of the object 1 to be measured, and as shown in FIG. .
外面投光装置１８は、測定領域の中心軸０の回りに同心
状に配置した複数の光源（半導体レーザ）２０から該中
心軸Ｏに向けて発せられる光スポットを、該測定領域の
上記中心軸Ｏにこれも又同心状に送り込まれる被測定体
１の外面に投光する。この結果、被測定体１の外面には
直線状もしくは略直線状の光スポツト列２１が形成され
る。The external light projector 18 directs a light spot emitted toward the central axis O from a plurality of light sources (semiconductor lasers) 20 arranged concentrically around the central axis 0 of the measurement area. The light is projected onto the outer surface of the object 1 to be measured, which is also sent concentrically to the object 1. As a result, a linear or substantially linear optical spot array 21 is formed on the outer surface of the object 1 to be measured.
外面撮像装置１９のカメラ１９Ａ、１９Ｂは、被測定体
１の管軸に直交する面内に配置され、カメラ１９Ａは被
測定体１の一方の外面の光スポツト列２１を撮像し、カ
メラ１９Ｂは被測定体１の他方の外面の光スポツト列２
１を撮像する。尚、光スポツト列２１は、被測定体１の
外面に凹凸がなければ直線状となるが、被測定体１の外
面に凹凸かあれば該凹凸部分に該凹凸の程度に比例した
歪みを生ずる。従って、カメラ１９Ａ、１９Ｂの出力回
路２２から出力される光スポツト列２１の撮像結果より
被測定体１の外面形状が検出てきる。Cameras 19A and 19B of the external imaging device 19 are arranged in a plane perpendicular to the tube axis of the object to be measured 1, and the camera 19A images the light spot row 21 on one outer surface of the object to be measured 1, and the camera 19B Light spot row 2 on the other outer surface of the object to be measured 1
Take an image of 1. Note that the light spot array 21 will be linear if there is no unevenness on the outer surface of the object to be measured 1, but if there is an unevenness on the outer surface of the object to be measured 1, distortion will occur in the uneven portion in proportion to the degree of the unevenness. . Therefore, the external shape of the object to be measured 1 can be detected from the imaging results of the optical spot array 21 output from the output circuits 22 of the cameras 19A and 19B.
内面形状検出装置１３は、光切断方式により被測定体１
の内面形状を検出するものであり、第３図に示す如く、
ピグ２３の内部に内面投光装置２４と、内面撮像装置２
５と、反射体２６とを有して構成されている。The inner surface shape detection device 13 detects the object to be measured 1 using an optical cutting method.
This is to detect the inner surface shape of the
Inside the pig 23, there is an internal light projecting device 24 and an internal imaging device 2.
5 and a reflector 26.
ピグ２３は測定領域の中心軸Ｏと同心状に配置され、こ
の測定領域に送り込まれる被測定体１の内面にこの被測
定体１とも同心をなす如くに位置する。The pig 23 is arranged concentrically with the central axis O of the measurement area, and is located on the inner surface of the object 1 to be measured, which is sent into the measurement area, so as to be concentric with the object 1 to be measured.
内面投光装置２４は、ピグ２３の中心軸上に順次配列さ
れている発光回路２７、発光素子２８、及び投光レンズ
２９からなり、反射体２６の反射作用を介することによ
り、測定領域に送り込まれる上記被測定体１の内面に環
状投射光を投光する。The internal light projecting device 24 consists of a light emitting circuit 27, a light emitting element 28, and a light projecting lens 29, which are arranged in sequence on the central axis of the pig 23, and the light is sent into the measurement area through the reflection action of the reflector 26. An annular projection light is projected onto the inner surface of the object 1 to be measured.
内面撮像装置２５は、ピグ２３の中心軸上に順次配列さ
れている受光レンズ３０、固体撮像素子等の二次元受光
素子３１、及び出力回路３２からなり、上記内面投光装
置！２４が投光した環状投射光の上記被測定体１の内面
における反射光像を、反射体２６の反射作用を介するこ
とにより撮像する。上記反射光像の歪みの有無、程度を
測定することにより被測定体１の内面形状が検出できる
。The inner surface imaging device 25 includes a light-receiving lens 30, a two-dimensional light-receiving device 31 such as a solid-state image sensor, and an output circuit 32, which are sequentially arranged on the central axis of the pig 23, and includes the above-mentioned inner surface light projecting device! A reflected light image of the annular projection light projected by 24 on the inner surface of the object to be measured 1 is captured through the reflection action of the reflector 26. The inner surface shape of the object to be measured 1 can be detected by measuring the existence and degree of distortion in the reflected light image.
データ処理袋ｆｉ１４は、送り装置１１の送り制御部１
６から転送される送りデータ、外面形状検出装置１２の
出力回路２２から転送されるＩｎ像データ、内面形状検
出装置１３の出力回路３２から転送される撮像データを
得ることにより、被測定体１の各部にて、■外面形状検
出装置１２が撮像した光スポツト列２１に基づく外面形
状、■内面形状検出袋ｆｉ１３が撮像した反射光像に基
づく内面形状、及び■上記■、■に基づく肉厚を求める
。The data processing bag fi14 is the feeding control section 1 of the feeding device 11.
6, In image data transferred from the output circuit 22 of the outer surface shape detection device 12, and imaging data transferred from the output circuit 32 of the inner surface shape detection device 13. At each part, (1) the outer surface shape based on the optical spot array 21 imaged by the outer surface shape detection device 12, (2) the inner surface shape based on the reflected light image captured by the inner surface shape detection bag fi13, and (2) the wall thickness based on the above (2) and (4). demand.
尚、データ処理袋Ｍ１４は、キーボード３３、表示装置
（ＣＲＴ）３４、プリンタ３５、フロッピディスク装置
３６を付帯的に備える。The data processing bag M14 additionally includes a keyboard 33, a display device (CRT) 34, a printer 35, and a floppy disk device 36.
次に、上記形状測定装置１０の測定要領について説明す
る。Next, the measurement procedure of the shape measuring device 10 will be explained.
（１）被測定体１を送り装置１１の測定開始位置にセッ
トする。(1) Set the object to be measured 1 to the measurement start position of the feeding device 11.
（２）データ処理装置１４の表示装置３４に第４図の入
力データ表示画面を表示し、キーボード３３にて、今回
測定対象の被測定体１１の寸法データ、最小肉厚及び最
大凹部深さを求める管長手方向間隔等の必要データを入
力する。(2) Display the input data display screen shown in FIG. 4 on the display device 34 of the data processing device 14, and use the keyboard 33 to enter the dimensional data, minimum wall thickness, and maximum recess depth of the object to be measured 11 to be measured this time. Enter the required data such as the desired longitudinal spacing of the pipes.
（３）被測定体１を測定する。(3) Measure the object to be measured 1.
（４）測定終了後、データ処理を行なう。データ処理結
果は、データ処理装置１４の表示装置３４に第５図例の
如く表示し、必要により、プリンタ３５に印字し、或い
はフロッピディスク装置３６に記録する。データ処理内
容の例としては、最小肉厚、管内面凹部最大深さ、管外
面凹部最大深さ、或いは、ある長さ（管軸方向）間隔毎
の最小肉厚、管内面凹部最大深さ、管外面凹部最大深さ
がある。(4) After the measurement is completed, data processing is performed. The data processing results are displayed on the display device 34 of the data processing device 14 as shown in the example in FIG. 5, and, if necessary, are printed on the printer 35 or recorded on the floppy disk device 36. Examples of data processing contents include the minimum wall thickness, the maximum depth of the recess on the inner surface of the tube, the maximum depth of the recess on the outer surface of the tube, the minimum wall thickness for each interval of a certain length (in the tube axis direction), the maximum depth of the recess on the inner surface of the tube, There is a maximum depth to the recess on the outer surface of the tube.
次に、上記実施例の作用について説明する。Next, the operation of the above embodiment will be explained.
上記形状測定装置１０によれば、送り装′Ｉｔ１１によ
り測定領域に送り込まれる被測定体１は、その送り込み
方向に交差する方向（周方向）の外面各部に外面投光装
置ｔ１８の光スポットを投光せしめられ、外面撮像装置
１９はその光スポツト列を撮像する。この時、被測定体
１は送り装置１１により連続して送り込まれその外面各
部は）・Ｉｎ次測定領域を通過する。従って、被測定体
１が測定領域を通過終了する際には、上記外面投光装置
１８か前述の送り込み方向に交差する方向の外面各部に
投光した光スポットが、送り込み方向（長手方向）の外
面各部にも及び、換言すれば全外面の各部に及ぶことに
なる。又、この時、外面撮像装置１９は被測定体１の全
外面に形成せしめられた光スポツト列２１を損保終了す
ることになる。これにより、データ処理装置１４は、上
記外面撮像装置１１１９の撮像結果を得て自動的に、且
つ被測定体ｌが測定領域を１度通過するだけ即ち能率的
に、被測定体各部の外面形状を求めることができる。According to the shape measuring device 10, the object to be measured 1 that is fed into the measurement area by the feeding device 'It11 projects a light spot of the external surface projector t18 onto each part of the outer surface in a direction (circumferential direction) intersecting the feeding direction. The external imaging device 19 images the row of light spots. At this time, the object to be measured 1 is continuously fed by the feeding device 11, and each part of its outer surface passes through the ).In order measurement area. Therefore, when the object to be measured 1 finishes passing through the measurement area, the light spots projected by the external surface projector 18 onto various parts of the external surface in the direction intersecting the feeding direction are reflected in the feeding direction (longitudinal direction). It extends to each part of the outer surface, in other words, it extends to each part of the entire outer surface. Also, at this time, the external imaging device 19 terminates the optical spot array 21 formed on the entire external surface of the object 1 to be measured. As a result, the data processing device 14 obtains the imaging results of the external surface imaging device 1119 and automatically and efficiently calculates the outer surface shape of each part of the object to be measured as long as the object to be measured l passes through the measurement area once. can be found.
又、上記形状測定装置１０によれば、上記外面投光装置
１８及び外面撮像装置１９の機能に加えて、内面投光装
置２４及び内面撮像装置２５が機能する。即ち、送り装
置１１により測定領域に送り込まれる被測定体１は、そ
の送り込み方向に交差する方向（周方向）の内周面に内
面投光装置２４の環状投射光を投光せしめられ、内面用
像装置２５はその反射光像を撮像する。この時、被測定
体１は送り装置１１により連続して送り込まれその内面
各部は順次測定領域を通過する。従って、被測定体１が
測定領域を通過終了する際には、上記内面撮像装置２５
が前述の送り込み方向に交差する方向の内周面に投光し
た環状投射光か、送り込み方向（長手方向）の内面各部
にも及び、換言すれば全内面の各部に及ぶことになる。Further, according to the shape measuring device 10, in addition to the functions of the external light projecting device 18 and the external imaging device 19, the internal projecting device 24 and the internal imaging device 25 function. That is, the object to be measured 1 sent into the measurement area by the feeding device 11 is illuminated with the annular projection light of the inner surface projecting device 24 on the inner circumferential surface in the direction (circumferential direction) intersecting the feeding direction. The imaging device 25 captures an image of the reflected light. At this time, the object to be measured 1 is continuously fed by the feeding device 11, and each part of its inner surface sequentially passes through the measurement area. Therefore, when the object to be measured 1 finishes passing through the measurement area, the inner surface imaging device 25
The annular projection light projected onto the inner circumferential surface in the direction intersecting the feeding direction mentioned above also extends to each part of the inner surface in the feeding direction (longitudinal direction), in other words, it reaches each part of the entire inner surface.
又、この時、内面撮像装置２５は被測定体１の全内面に
形成せしめられた反射光像を撮像終了することになる。Also, at this time, the inner surface imaging device 25 finishes capturing the reflected light image formed on the entire inner surface of the object 1 to be measured.
これにより、データ処理装置１４は、上記内面撮像装置
２５の撮像結果を得て自動的に、且つ被測定体ｌが測定
領域を１度通過するたけ即ち能率的に、被測定体各部の
内面形状を求めることかできる。Thereby, the data processing device 14 obtains the imaging results of the inner surface imaging device 25 and automatically and efficiently analyzes the inner surface shape of each part of the object to be measured as long as the object to be measured l passes through the measurement area once. You can ask for it.
又、上記形状測定袋２１０によれば、上述の如くにて求
められる被測定体各部の外面形状のデータ、及び内面形
状のデータを突き合わせることにて、自動的且つ能率的
に、被測定体各部の肉厚を求めることができる。Further, according to the shape measuring bag 210, by comparing the data of the outer surface shape of each part of the object to be measured and the data of the inner surface shape obtained as described above, the object to be measured can be automatically and efficiently measured. The wall thickness of each part can be determined.
第６図の形状測定装置４０は、中実丸棒を被測定体１と
するものであり、不図示の送り装置、外面形状検出装置
４１、及び不図示のデータ処理装置を有して構成される
。The shape measuring device 40 in FIG. 6 uses a solid round bar as the object 1 to be measured, and is configured with a feeding device (not shown), an external shape detecting device 41, and a data processing device (not shown). Ru.
外面形状検出装置４１は、前述の形状測定装置１０の外
面形状検出袋Ｔｌ１２と同様に、光切断方式により被測
定体１の外面形状を検出するものであり、外面投光装置
ｔ４２と、外面撮像装置４３とを有して構成されている
。外面投光装置４２は、測定領域の一方側に配置した一
組の光源４４Ａ、投光レンズ４５Ａ、半円状スリット４
６Ａ、他方側に配置した一組の光源４４Ｂ、投光レンズ
４５Ｂ、半円状スリット４６Ｂに挟まれる特定領域の周
辺に配置したＶ字状反射体４７、及び測定領域の周囲に
上記反射体４７と軸方向に１１１隔して配置された集光
レンズ４８にて構成される。即ち、この外面投光装置４
２にあっては、被測定体１における両側部のそれぞれに
おいて、光源４４Ａ、４４Ｂからの光が投光レンズ４５
Ａ、４５Ｂにより平行光束となり、半円状スリット４６
Ａ、４６Ｂを通過する。この結果、半円状の光束が反射
体４７で曲げられ、集光レンズ４８にて被測定体１の中
心軸に向かって集光される。この光は、途中に被測定体
１の外面があるため、この外面の全周に照射される環状
投射光となる。The outer surface shape detection device 41 detects the outer surface shape of the object to be measured 1 using a light cutting method, similar to the outer surface shape detection bag Tl12 of the shape measuring device 10 described above, and includes an outer surface projection device t42 and an outer surface imaging device. device 43. The external light projecting device 42 includes a set of light sources 44A, a light projecting lens 45A, and a semicircular slit 4 arranged on one side of the measurement area.
6A, a set of light sources 44B placed on the other side, a projection lens 45B, a V-shaped reflector 47 placed around a specific area sandwiched between semicircular slits 46B, and the reflector 47 placed around the measurement area. It is composed of a condenser lens 48 arranged 111 points apart in the axial direction. That is, this external projector 4
2, the light from the light sources 44A and 44B is transmitted to the projection lens 45 on each of both sides of the object 1.
A and 45B form a parallel light beam, and a semicircular slit 46
Pass through A and 46B. As a result, the semicircular light beam is bent by the reflector 47 and condensed by the condenser lens 48 toward the central axis of the object to be measured 1 . Since this light has the outer surface of the object to be measured 1 on its way, it becomes an annular projection light that irradiates the entire circumference of this outer surface.
外面撮像装置４３は、測定領域を挟む一対のカメラ４３
Ａ、４３Ｂにて構成され、上記外面投光装置４２が被測
定体１の外面に投光した環状投射光の上記被測定体１の
外面における反射光像４４を撮像する。この反射光像４
４は、前述の光スポツト列２１と同様に、被測定体１の
外面に凹凸がなければ直線状となるか、被測定体１の外
面に凹凸があれば該凹凸部分に該凹凸の程度に比例した
歪みを生ずる。これにより、カメラ４３Ａ、４３Ｂの出
力回路から出力される反射光像の損保結果より被測定体
１の外面形状が検出できる。The external imaging device 43 includes a pair of cameras 43 sandwiching a measurement area.
A and 43B, and captures a reflected light image 44 on the outer surface of the object to be measured 1 of the annular projection light projected onto the outer surface of the object to be measured 1 by the outer surface projection device 42 . This reflected light image 4
Similarly to the above-mentioned optical spot array 21, if there is no unevenness on the outer surface of the object to be measured 1, the line will be linear, or if the outer surface of the object to be measured 1 has unevenness, the uneven portion will have a shape corresponding to the degree of the unevenness. Produces proportional distortion. Thereby, the outer surface shape of the object to be measured 1 can be detected from the insurance results of the reflected light images output from the output circuits of the cameras 43A and 43B.
従って、この形状測定装置４０にあっては、被測定体１
を送り装置により上記測定領域に送り込みなから、カメ
ラ４３Ａ、４３Ｂの撮像データをデータ処理装置により
処理することにより、被測定体１の各部の外面形状を求
めることができる。Therefore, in this shape measuring device 40, the object to be measured 1
The external shape of each part of the object to be measured 1 can be determined by processing the imaging data of the cameras 43A and 43B by the data processing device.
尚、本発明の実施においては、被測定体１を移動させず
、外面形状検出装置１２、及び内面形状検出装置１３の
側を移動し、上述と同様の測定動作を実行するものであ
っても良い。Note that in implementing the present invention, the measurement operation similar to that described above may be performed by moving the outer surface shape detection device 12 and the inner surface shape detection device 13 without moving the object to be measured 1. good.
［発明の効果］
以上のように本発明によれば、管、中実棒等の物体の各
部の外面形状、内面形状、或いは肉厚を、自動的且つ能
率的に測定することができる。[Effects of the Invention] As described above, according to the present invention, the outer surface shape, inner surface shape, or wall thickness of each part of an object such as a pipe or a solid rod can be automatically and efficiently measured.
第１図は本発明が適用された形状測定装置の一例を示す
模式図、第２図は外面投光装置と外面撮像装置とを示す
模式図、第３図は内面投光装置と内面撮像装置とを示す
模式図、第４図は表示装置の入力データ表示状態例を示
す模式図、第５図は表示装置の出力データ表示状態例を
示す模式図、第６図は本発明が適用された形状測定装置
の他の例を示す模式図である。
１０・・・形状測定装置、
１１・・・送り装置、
１２・・・外面形状検出装置、
１３・・・内面形状検出装置、
１４・・・データ処理装置、
１８・・・外面投光装置、
１９・・・外面撮像装置、
２１・・・光スポツト列
２４・・・内面投光装置、
２５・・・内面撮像装置、
４０・・・形状測定装置、
４１・・・外面形状検出装置、
４２・・・外面投光装置、
４３・・・外面撮像装置、
４４・・・反射光像。
（反射光像）Fig. 1 is a schematic diagram showing an example of a shape measuring device to which the present invention is applied, Fig. 2 is a schematic diagram showing an external light projecting device and an external imaging device, and Fig. 3 is a schematic diagram showing an internal projecting device and an internal imaging device. FIG. 4 is a schematic diagram showing an example of the input data display state of the display device, FIG. 5 is a schematic diagram showing an example of the output data display state of the display device, and FIG. 6 is a schematic diagram showing an example of the output data display state of the display device. FIG. 3 is a schematic diagram showing another example of the shape measuring device. DESCRIPTION OF SYMBOLS 10... Shape measuring device, 11... Feeding device, 12... Outer surface shape detection device, 13... Inner surface shape detection device, 14... Data processing device, 18... External surface projection device, 19... External surface imaging device, 21... Light spot row 24... Inner surface projection device, 25... Inner surface imaging device, 40... Shape measuring device, 41... External surface shape detecting device, 42 . . . External light projector, 43 . . . External imaging device, 44 . . . Reflected light image. (Reflected light image)
Claims (2)
装置と、上記測定領域の周囲に配置した光源から、該測
定領域に位置する被測定体の外面に環状投射光を投光す
る外面投光装置と、上記外面投光装置が投光した環状投
射光の上記被測定体の外面における反射光像を撮像する
外面撮像装置と、上記送り装置により上記測定領域に送
り込まれる被測定体の該送り方向の各部にて、上記外面
撮像装置が撮像した反射光像により該被測定体各部の外
面形状を求めるデータ処理装置とを有してなる物体の形
状測定装置。(1) Annular projection light is projected from a feeding device that moves the object to be measured relative to the measurement area and a light source placed around the measurement area onto the outer surface of the object to be measured located in the measurement area. an external light projector; an external image pickup device that captures a reflected light image of the annular projection light projected by the external projector on the outer surface of the object to be measured; and an object to be measured that is sent into the measurement area by the feeding device. and a data processing device for determining the outer surface shape of each part of the object to be measured from reflected light images taken by the outer surface imaging device at each part in the feeding direction.
装置と、上記測定領域の周囲に配置した光源から、該測
定領域に位置する被測定体の外面に環状投射光を投光す
る外面投光装置と、上記外面投光装置が投光した環状投
射光の上記被測定体の外面における反射光像を撮像する
外面撮像装置と、上記測定領域の中心部に配置した光源
から、該測定領域に位置する上記被測定体の内面に環状
投射光を投光する内面投光装置と、上記内面投光装置が
投光した環状投射光の上記被測定体の内面における反射
光像を撮像する内面撮像装置と、上記送り装置により上
記測定領域に送り込まれる被測定体の該送り方向の各部
にて、上記外面撮像装置が撮像した反射光像により該被
測定体各部の外面形状を求めるとともに、上記内面撮像
装置が撮像した反射光像により該被測定体各部の内面形
状を求め、さらにそれら外面形状と内面形状に基づいて
該被測定体各部の肉厚を求めるデータ処理装置とを有し
てなる物体の形状測定装置。(2) Annular projection light is projected from a feeding device that moves the object to be measured relative to the measurement area and a light source placed around the measurement area onto the outer surface of the object to be measured located in the measurement area. an external light projecting device, an external imaging device that captures a reflected light image of the annular projection light projected by the external projecting device on the external surface of the object to be measured, and a light source disposed at the center of the measurement area. an internal light projection device that projects annular projection light onto the inner surface of the object to be measured located in a measurement area; and an image of reflected light on the inner surface of the object to be measured of the annular projection light projected by the internal projection device; The outer surface shape of each part of the object to be measured is determined by the reflected light image taken by the outer surface imager at each part of the object to be measured in the feeding direction that is sent into the measurement area by the inner surface imaging device and the feeding device. , a data processing device that determines the inner surface shape of each part of the object to be measured from the reflected light image taken by the inner surface imaging device, and further calculates the wall thickness of each part of the object to be measured based on the outer surface shape and inner surface shape. A device for measuring the shape of objects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30227688A JPH02176408A (en) | 1988-12-01 | 1988-12-01 | Body-shape measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30227688A JPH02176408A (en) | 1988-12-01 | 1988-12-01 | Body-shape measuring apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02176408A true JPH02176408A (en) | 1990-07-09 |
Family
ID=17907057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30227688A Pending JPH02176408A (en) | 1988-12-01 | 1988-12-01 | Body-shape measuring apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02176408A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007263895A (en) * | 2006-03-29 | 2007-10-11 | Furukawa Electric Co Ltd:The | Method and device for measuring deflection of tubular body |
| JP2011027577A (en) * | 2009-07-27 | 2011-02-10 | Oputouea Kk | Device for inspecting glossy cylindrical surface shape |
| WO2011115257A1 (en) * | 2010-03-18 | 2011-09-22 | 株式会社ブリヂストン | Shape measurement method and shape measurement apparatus for tires |
| JP2013210403A (en) * | 2012-03-30 | 2013-10-10 | Kubota Corp | Inner face photographing device |
-
1988
- 1988-12-01 JP JP30227688A patent/JPH02176408A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007263895A (en) * | 2006-03-29 | 2007-10-11 | Furukawa Electric Co Ltd:The | Method and device for measuring deflection of tubular body |
| JP2011027577A (en) * | 2009-07-27 | 2011-02-10 | Oputouea Kk | Device for inspecting glossy cylindrical surface shape |
| WO2011115257A1 (en) * | 2010-03-18 | 2011-09-22 | 株式会社ブリヂストン | Shape measurement method and shape measurement apparatus for tires |
| JP2011196734A (en) * | 2010-03-18 | 2011-10-06 | Bridgestone Corp | Method and device for measuring shape of tire |
| US9175952B2 (en) | 2010-03-18 | 2015-11-03 | Bridgestone Corporation | Shape measurement method and shape measurement apparatus for tires |
| JP2013210403A (en) * | 2012-03-30 | 2013-10-10 | Kubota Corp | Inner face photographing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3430780B2 (en) | Object surface shape detection method | |
| JPH03267745A (en) | Surface property detecting method | |
| GB2051349A (en) | Automatic defecting inspection apparatus | |
| JP2006189389A (en) | Optical thickness measuring method and device | |
| JPH02176408A (en) | Body-shape measuring apparatus | |
| JPH09264719A (en) | Method for measuring screw dimensions and apparatus therefor | |
| JP4023295B2 (en) | Surface inspection method and surface inspection apparatus | |
| JP3212023B2 (en) | Dimension measurement device and manufacturing system for corrugated long flexible tube | |
| JP2000002664A (en) | Method and apparatus for inspection of defect | |
| JP3340879B2 (en) | Surface defect detection method and apparatus | |
| JPH01227910A (en) | Optical inspection device | |
| JP4031124B2 (en) | Optical hole shape measuring method and measuring apparatus | |
| JPH09304287A (en) | Apparatus for visual examination | |
| JPS62291512A (en) | Distance measuring apparatus | |
| JP2006189390A (en) | Optical displacement measuring method and device | |
| JPH0961117A (en) | Three-dimensional position detector | |
| JP2870908B2 (en) | Method and apparatus for measuring perspective distortion | |
| JPH0452504A (en) | Measuring apparatus of length of linear body | |
| JP2556889B2 (en) | In-pipe inspection device | |
| JP3136216B2 (en) | Non-uniform pitch spring orientation detector | |
| JP2001034743A (en) | Method and device for comparison and checking | |
| JPS63138204A (en) | Shape measuring method | |
| JPS59164910A (en) | Distance measuring apparatus | |
| JPS5811804A (en) | Method and device for measuring screw shape | |
| JP2793942B2 (en) | Surface inspection equipment |