JPH09229653A - Pipe roundness measuring device - Google Patents
Pipe roundness measuring deviceInfo
- Publication number
- JPH09229653A JPH09229653A JP4122196A JP4122196A JPH09229653A JP H09229653 A JPH09229653 A JP H09229653A JP 4122196 A JP4122196 A JP 4122196A JP 4122196 A JP4122196 A JP 4122196A JP H09229653 A JPH09229653 A JP H09229653A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- measured
- roundness
- measuring device
- measurement
- 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]
【発明の属する技術分野】この発明は、鋼管，銅管ある
いは塩化ビニール管などの管の真円度測定装置に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roundness measuring device for a pipe such as a steel pipe, a copper pipe or a vinyl chloride pipe.
【０００２】[0002]
【従来の技術と発明が解決しようとする課題】管の真円
度測定装置は、従来から種々の測定方式によるものが提
案されており、例えば次に示す装置があるが、それぞれ
問題点を有している。2. Description of the Related Art As a roundness measuring device for a pipe, various measuring methods have been proposed in the past. For example, the following devices are available, but each has a problem. doing.
【０００３】(1) 円筒真円度計測器（実開昭６０−１２
０３１５号公報） 図７（ａ）に示すように、鋼管等の円筒Ｐを左右一対の
支持ローラ５０で支持し、円筒Ｐの上部および下部にそ
れぞれ接触式の上部センサー５１，下部センサー５２を
配置し、支持ローラ５０で円筒Ｐを回転させて回転量を
ポテンショメータ５３で検出し、センサー５１・５２の
変位から真円度を全周にわたって求めている。(1) Cylindrical roundness measuring instrument (Shokai Sho-60-12)
As shown in FIG. 7A, a cylinder P such as a steel pipe is supported by a pair of left and right support rollers 50, and a contact type upper sensor 51 and a lower sensor 52 are arranged on the upper and lower parts of the cylinder P, respectively. Then, the cylinder P is rotated by the support roller 50, the rotation amount is detected by the potentiometer 53, and the roundness is obtained from the displacement of the sensors 51 and 52 over the entire circumference.
【０００４】しかし、この測定装置は、円筒Ｐの管端部
などの一箇所を全周にわたって測定する構成であり、円
筒長さ方向の真円度を連続測定することができず、長さ
方向の真円度プロフィールを検出することができない。
長さ方向に円筒Ｐをインチング移動させて所定のピッチ
で測定することも考えられるが、円筒Ｐに支持ローラ５
０およびセンサー５１・５２が接触しているため、円筒
Ｐを移動させることに支障がある。また、全周にわたっ
て変位を検出しているため、長さ方向に測定する場合、
解析が複雑となる。However, this measuring device is constructed so as to measure at one location such as the tube end of the cylinder P over the entire circumference, and it is not possible to continuously measure the roundness in the cylinder length direction, so that the length direction Can not detect the roundness profile of.
It is conceivable that the cylinder P is inching-moved in the length direction and measurement is performed at a predetermined pitch.
Since 0 and the sensors 51 and 52 are in contact with each other, it is difficult to move the cylinder P. Also, because the displacement is detected over the entire circumference, when measuring in the length direction,
Analysis becomes complicated.
【０００５】(2) 管の真円度測定装置（特開昭５７−１
２４２０１号公報） 図７（ｂ）に示すように、被測定管Ｐ内に挿入されるパ
イプ６０の先端部に変形可能な第１アーム６１と第２ア
ーム６２を取付け、これらアームの軸着先端部に被測定
管Ｐの内面を円周方向に転動し得る車輪６３を設け、被
測定管Ｐの内面変形に応じて移動する第２アーム６２の
基部６２ａの軸方向移動をパイプ６０に内蔵した変位計
６４で検出し、演算装置６５で内半径を算出している。
円周方向の位置はパイプ６０に設けた回転角検出器６６
で検出し、円周方向の内半径の測定データにより真円度
を判定している。(2) Tube roundness measuring device (Japanese Patent Laid-Open No. 57-1
As shown in FIG. 7B, a deformable first arm 61 and a second arm 62 are attached to the tip end portion of the pipe 60 inserted into the pipe to be measured P, and the tip ends of the shafts of these arms are attached. Is provided with a wheel 63 capable of rolling on the inner surface of the pipe to be measured P in the circumferential direction, and the pipe 60 is provided with the axial movement of the base portion 62a of the second arm 62 that moves according to the deformation of the inner surface of the pipe to be measured P. The displacement gauge 64 detects the displacement, and the arithmetic unit 65 calculates the inner radius.
The position in the circumferential direction is the rotation angle detector 66 provided on the pipe 60.
The roundness is determined by the measurement data of the inner radius in the circumferential direction.
【０００６】しかし、この測定装置も一箇所を全周にわ
たって測定する構成であり、長さ方向の真円度プロフィ
ールを検出することは困難であり、また装置の構造が複
雑となる問題点がある。パイプ６０を長くし被測定管内
を移動可能に改造すれば、長さ方向にわたって測定する
こともできるが、機構が複雑でパイプの支持固定方法が
難しく、実機としては精度維持が困難となる。However, this measuring device also has a structure in which one position is measured over the entire circumference, and it is difficult to detect the roundness profile in the length direction, and the structure of the device becomes complicated. . If the pipe 60 is lengthened and the pipe to be measured is modified so as to be movable, it is possible to measure in the length direction, but the mechanism is complicated and the method of supporting and fixing the pipe is difficult, and it becomes difficult to maintain accuracy as an actual machine.
【０００７】(3) 長尺物体の内径・外径・真円度の検出
装置（特開昭５２−１５１０４７号公報） 図７（ｃ）に示すように、長尺円筒体Ｐの両端部にレー
ザ投光部７０とレーザ受光部７１を上下方向に移動可能
に設け、これらレーザ投光部７０・レーザ受光部７１を
上下方向に走査し、長尺円筒体Ｐの端部によるレーザ光
の透過・遮断により内径・外径の位置を検出し、この時
のレーザ投光部７０・レーザ受光部７１の上下位置を位
置表示目盛板７２の目盛値から求めることにより内径・
外径を得ている。長尺円筒体Ｐを回転させて内径・外径
をサンプリングすることにより真円度を知ることができ
る。(3) Device for detecting inner diameter / outer diameter / roundness of a long object (Japanese Patent Laid-Open No. 52-151047) As shown in FIG. The laser projecting unit 70 and the laser receiving unit 71 are provided so as to be movable in the vertical direction, the laser projecting unit 70 and the laser receiving unit 71 are scanned in the vertical direction, and the laser light is transmitted by the end of the elongated cylindrical body P. By detecting the positions of the inner and outer diameters by shutting off and determining the vertical positions of the laser projecting unit 70 and the laser receiving unit 71 at this time from the scale values of the position display scale plate 72,
Has an outer diameter. The circularity can be known by rotating the long cylindrical body P and sampling the inner diameter and the outer diameter.
【０００８】レーザ光を使用するため、非接触で計測す
ることができるが、構造上、得られるデータとしては全
長のうち一番特徴のある（内径であれば最小値、外径で
あれば最大値）一点代表値となる。従って、円周方向の
データは得られるが、管の長さ方向のどの場所かの対応
ができない。Since laser light is used, it can be measured in a non-contact manner, but the structurally obtained data is the most characteristic of the entire length (minimum value for inner diameter, maximum for outer diameter). Value) One-point representative value. Therefore, although data in the circumferential direction can be obtained, it is not possible to correspond to any position in the length direction of the pipe.
【０００９】この発明は、前述のような問題点を解消す
べくなされたもので、その目的は、比較的簡易な構造の
測定装置により、種々の大きさの被測定体の真円度を簡
単に測定することができると共に、被測定体の長さ方向
の真円度プロフィールを容易に得ることのできる管の真
円度測定装置を提供することにある。The present invention has been made to solve the above-mentioned problems, and an object thereof is to easily measure the circularity of an object to be measured of various sizes by using a measuring device having a relatively simple structure. It is an object of the present invention to provide a pipe roundness measuring device capable of performing the above-mentioned measurement and easily obtaining the roundness profile in the longitudinal direction of the measured object.
【００１０】[0010]
【課題を解決するための手段】この発明は、円形断面の
被測定体の真円度を被測定体の長さ方向にわたって測定
する管の真円度測定装置であって、前記被測定体が挿通
可能な計測架台と、この計測架台に取付けられ、被測定
体の上端・下端および左端・右端の位置を非接触で検出
する位置検出センサー（例えばレーザ外径計など）と、
被測定体の長さ方向の移動量を検出する移動量検出セン
サー（例えばパルスジェネレータなど）と、被測定体の
端部を検出する端部検出センサー（例えば光電スイッチ
など）と、前記各センサーの検出信号を用いて、被測定
体の基準外径に対する被測定体の縦径および横径の偏差
を算出し、被測定体の長さ方向の真円度分布を求める演
算処理手段を備えていることを特徴とする。SUMMARY OF THE INVENTION The present invention is a pipe circularity measuring device for measuring the circularity of a measured object having a circular cross section in the longitudinal direction of the measured object. A measurement base that can be inserted, and a position detection sensor (for example, a laser outer diameter meter) that is attached to this measurement base and that detects the positions of the upper and lower ends and the left and right ends of the object to be measured without contact,
A movement amount detection sensor (for example, a pulse generator) that detects the movement amount of the measured object in the longitudinal direction, an end detection sensor (for example, a photoelectric switch) that detects the end of the measured object, and each of the sensors. The detection signal is used to calculate deviations of the vertical and horizontal diameters of the measured object with respect to the reference outer diameter of the measured object, and arithmetic processing means for obtaining a circularity distribution in the longitudinal direction of the measured object is provided. It is characterized by
【００１１】計測架台は走行台車とレールなどにより被
測定体の左右方向に移動可能とする。また、計測架台は
走行台車などの上に設置し、スクリューロッド等により
上下方向に移動可能に支持する。あるいは、計測架台を
支持架台に対して上下移動可能に設け、この計測架台に
被測定体上を転動し得るローラを設ける。The measuring platform can be moved in the left-right direction of the object to be measured by a traveling carriage and rails. Further, the measurement stand is installed on a traveling carriage, etc., and supported by a screw rod or the like so as to be movable in the vertical direction. Alternatively, the measurement stand is provided so as to be movable up and down with respect to the support stand, and this measurement stand is provided with a roller that can roll on the object to be measured.
【００１２】以上のような構成において、計測架台を被
測定体の移動路を遮るように設置し、被測定体を連続移
動あるいはインチング移動させることにより計測架台内
を通過させて計測を行う。位置検出センサーの検出信号
から求めた被測定体の縦径および横径と基準外径との偏
差から真円度が得られ、端部検出センサーと移動量検出
センサーにより得られた被測定体の長さ方向位置により
被測定体長さ方向の真円度プロフィールが得られる。In the above structure, the measurement stand is installed so as to block the moving path of the object to be measured, and the object to be measured is continuously moved or inching moved to pass through the inside of the measuring stand to perform measurement. The roundness is obtained from the deviation between the vertical and horizontal diameters of the measured object and the reference outer diameter obtained from the detection signal of the position detection sensor, and the circularity of the measured object obtained by the end detection sensor and the movement amount detection sensor. The circularity profile in the longitudinal direction of the measured object can be obtained by the position in the longitudinal direction.
【００１３】計測架台に対して移動する被測定体の縦径
と横径を検出して真円度を求めるため、比較的簡易な構
造の測定装置とすることができ、さらに真円度を簡単に
計測できると共に、被測定体の長さ方向の真円度プロフ
ィールを容易に得ることができる。非接触式の位置検出
センサーで被測定体の縦径と横径を検出するため、位置
検出センサーの計測架台への取付け位置を変更すること
により、広範囲にわたる種々の寸法の被測定体の真円度
を計測することができる。平面的な構造の簡易な測定装
置により被測定体の長さ方向の真円度プロフィールを計
測することができ、ラインに容易に組み込むことができ
る。また、位置検出センサーは非接触で所定の幅の検出
範囲を有しているため、被測定体に多少の曲がり等があ
っても、支障なく計測を行うことができる。これより大
きな曲がり等に対しては、計測架台を左右方向あるいは
上下方向に移動させることにより、対応することができ
る。Since the circularity is obtained by detecting the longitudinal and lateral diameters of the object to be measured which moves with respect to the measuring stand, it is possible to provide a measuring device having a relatively simple structure, and to further improve the circularity. The roundness profile of the measured object in the length direction can be easily obtained. Since the non-contact type position detection sensor detects the vertical and horizontal diameters of the object to be measured, by changing the mounting position of the position detection sensor on the measuring frame, the perfect circle of the object to be measured with various dimensions over a wide range. You can measure the degree. The roundness profile in the length direction of the measured object can be measured by a simple measuring device having a planar structure, and it can be easily incorporated in a line. In addition, since the position detection sensor has a non-contact and has a detection range of a predetermined width, even if the object to be measured is slightly bent, the measurement can be performed without any trouble. Larger bends and the like can be dealt with by moving the measurement gantry horizontally or vertically.
【００１４】[0014]
【発明の実施の形態】以下、この発明を図示する実施例
に基づいて詳細に説明する。これは、２４〜３０ｉｎｃ
ｈ（６０９．６〜７６２ｍｍ）の比較的大径の鋼管の製
造ラインにおける真円度測定に適用した例であり、図１
〜図３にこの発明に係る簡易型真円度測定装置の１実施
例を示し、図４，図５に他の実施例を示す。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to illustrated embodiments. This is 24-30 inc
1 is an example applied to roundness measurement in a production line of a steel pipe having a relatively large diameter of h (609.6 to 762 mm), and FIG.
~ Fig. 3 shows one embodiment of the simple roundness measuring device according to the present invention, and Fig. 4 and Fig. 5 show other embodiments.
【００１５】図１〜図３において、この発明に係る簡易
型真円度測定装置１は、主として被測定体としての鋼管
Ｐが挿通可能な計測架台２と、鋼管Ｐの上端・下端およ
び左端・右端の位置を検出する透過型のレーザ外径計３
と、鋼管Ｐの長手方向の移動量を検出する移動量検出エ
ンコーダ４と、鋼管Ｐの管端を検出する光電センサー５
と、各検出器からの信号を処理する演算処理装置６から
構成されている。1 to 3, a simplified roundness measuring device 1 according to the present invention mainly comprises a measuring stand 2 into which a steel pipe P as a measured object can be inserted, an upper end, a lower end and a left end of the steel pipe P. Transmission type laser odometer 3 for detecting the right end position
A movement amount detection encoder 4 for detecting the movement amount of the steel pipe P in the longitudinal direction, and a photoelectric sensor 5 for detecting the pipe end of the steel pipe P.
And an arithmetic processing unit 6 for processing the signals from the respective detectors.
【００１６】計測架台２は、図２に示すように、製造ラ
インを横切るように設置される四角枠体２ａと、この表
裏面に取付けられるカバー２ｂからなり、このカバー２
ｂには製造ラインの搬送コンベヤ等により移動する最大
径の鋼管Ｐを余裕をもって通過させることのできる大き
さの挿通孔２ｃが形成されている。また、この計測架台
２はラインと直交する方向に横移動可能とされ、オンラ
イン位置（測定位置）Ａとオフライン位置（保守位置）
Ｂに位置することができ、また鋼管Ｐの左右方向の大き
な曲がりに対応できるようにされている。さらに、搬送
コンベヤ等で移動する鋼管Ｐの下面位置は、鋼管Ｐの寸
法が種々変わっても一定であるが、鋼管Ｐの下面位置が
変わった場合や上下方向の曲がりに対応できるように計
測架台２は上下方向に高さ調整可能とされている。As shown in FIG. 2, the measuring pedestal 2 comprises a rectangular frame 2a installed across the manufacturing line and a cover 2b attached to the front and back sides of the quadrangular frame 2a.
In b, there is formed an insertion hole 2c having a size that allows the steel pipe P having the maximum diameter, which is moved by a conveyor or the like of the manufacturing line, to pass through with a margin. Further, this measuring base 2 is capable of lateral movement in a direction orthogonal to the line, and has an online position (measurement position) A and an offline position (maintenance position).
It can be located at B, and can cope with a large bend in the horizontal direction of the steel pipe P. Furthermore, the lower surface position of the steel pipe P that moves on the transport conveyor or the like is constant even if the dimensions of the steel pipe P are changed, but the measurement stand is designed so as to be able to cope with a change in the lower surface position of the steel pipe P or bending in the vertical direction. The height of 2 is adjustable in the vertical direction.
【００１７】従って、基礎の上には一対のレール１０を
ラインと直交する方向に敷設し、このレール１０上に車
輪１２付きの走行台車１１を設け、この走行台車１１上
に計測架台２を設置する。走行台車１１は手押しで移動
させる。レール１０側にはクランプ板１３を設置し、走
行台車１１にはクランプレバー１４を設け、クランプ板
１３の係合溝にクランプレバー１４の軸を係合して回転
させることにより、走行台車１１を固定可能としている
（図２，図３参照）。また、クランプ板１３はオンライ
ン位置Ａやオフライン位置Ｂなどに複数配設し、あるい
は移動固定可能に設置し、計測架台２を任意の位置に固
定設置可能とする。なお、これに限らず、走行台車１１
をモータ・スクリューロッド方式などで自動的に移動さ
せるようにしてもよい。Therefore, a pair of rails 10 are laid on the foundation in a direction orthogonal to the line, a traveling carriage 11 with wheels 12 is provided on the rail 10, and the measurement platform 2 is installed on the traveling carriage 11. To do. The traveling carriage 11 is manually moved. The clamp plate 13 is installed on the rail 10 side, the clamp lever 14 is provided on the traveling carriage 11, and the shaft of the clamp lever 14 is engaged with the engaging groove of the clamp plate 13 to rotate the traveling carriage 11. It can be fixed (see Figures 2 and 3). Further, a plurality of clamp plates 13 are arranged at the online position A, the offline position B, or the like, or installed so as to be movable and fixed, so that the measurement base 2 can be fixedly installed at any position. Note that the traveling carriage 11 is not limited to this.
May be automatically moved by a motor / screw rod system or the like.
【００１８】また、計測架台２の左右の縦枠外面にはリ
ニアベアリング１５を取付け、走行台車１１にはリニア
ベアリング１５に挿通されるガイドロッド１６を一対で
立設し、計測架台２を上下方向に移動可能に案内支持す
る。高さ調整は、計測架台２の下面中央に垂設したスク
リューロッド１７と、走行台車の上面中央に設置したハ
ンドル１８付のナット部材１９により行う。この実施例
では高さ調整ストロークは９０ｍｍ程度とされている。
この場合もモータなどで自動的に上下移動させるように
してもよい。Further, linear bearings 15 are attached to the outer surfaces of the left and right vertical frames of the measurement pedestal 2, and a pair of guide rods 16 inserted into the linear bearings 15 are erected on the traveling carriage 11 so that the measurement pedestal 2 can be vertically moved. The guide is supported so that it can move. The height adjustment is performed by a screw rod 17 vertically provided at the center of the lower surface of the measurement base 2 and a nut member 19 with a handle 18 installed at the center of the upper surface of the traveling carriage. In this embodiment, the height adjustment stroke is about 90 mm.
Also in this case, a motor or the like may be used to automatically move up and down.
【００１９】レーザ外径計３は、レーザ光をポリゴンミ
ラーやコリメータレンズ等の光学系で所定範囲の平行光
として照射する投光器３ａと、位置検出素子としてＣＣ
Ｄイメージセンサー等を有する受光器３ｂからなり、イ
メージセンサーのオンオフ信号により鋼管Ｐの外周位置
を検出することができる。このレーザ外径計３を、図１
（ａ），（ｂ）に示すように、計測架台２に合計４組配
設し、上下に配設したレーザ外径計３−１により鋼管Ｐ
の上端と下端を検出すれば、設置間隔Ｌ1 と検出位置か
ら鋼管Ｐの縦径Ｄ1 を得ることができる。同様に、左右
に配設したレーザ外径計３−２により鋼管Ｐの左端と右
端を検出すれば、設置間隔Ｌ2 と検出位置から鋼管Ｐの
横径Ｄ2 を得ることができる。なお、投光器３ａはレー
ザ発振器と走査光学系に限ることなく、ＬＥＤ・コリメ
ータレンズ方式などでもよい。The laser outer diameter meter 3 includes a projector 3a for irradiating laser light as parallel light within a predetermined range by an optical system such as a polygon mirror or a collimator lens, and a CC as a position detecting element.
The light receiving device 3b includes a D image sensor and the like, and the outer peripheral position of the steel pipe P can be detected by an ON / OFF signal of the image sensor. This laser outer diameter meter 3 is shown in FIG.
As shown in (a) and (b), a total of four sets are arranged on the measurement stand 2 and the steel pipe P is arranged by the laser outer diameter meter 3-1 arranged above and below.
If the upper and lower ends of the steel pipe P are detected, the longitudinal diameter D 1 of the steel pipe P can be obtained from the installation interval L 1 and the detection position. Similarly, if the left and right ends of the steel pipe P are detected by the laser outer diameter gauges 3-2 arranged on the left and right, the lateral diameter D 2 of the steel pipe P can be obtained from the installation interval L 2 and the detection position. The projector 3a is not limited to the laser oscillator and the scanning optical system, and may be an LED / collimator lens system or the like.
【００２０】レーザ外径計３の投光器３ａおよび受光器
３ｂは、図１（ｃ）に示すように、ベース板２０の両端
に取付け、ベース板２０の中間部には切欠２０ａを設け
てここに鋼管Ｐの外周部が位置できるようにする。縦径
Ｄ1 用の一対のレーザ外径計３−１のベース板２０−１
は、計測架台２の表面に設置し（図１（ａ）参照）、横
径Ｄ2 用の一対のレーザ外径計３−２のベース板２０−
２は裏面に設置する（図１（ｂ）参照）。また、最大径
から最小径の鋼管Ｐに対応できるように、縦径Ｄ1 用の
ベース板２０−１は上部のもののみを上下位置調整可能
とし、横径Ｄ2用のベース板２０−２は左右両方を左右
位置調整可能とする。上部のベース板２０−１に対して
は計測架台２の縦枠に２インチピッチの取付孔を、左右
両方のベース板２０−２に対しては計測架台２の上下枠
に１インチピッチの取付孔を設け、位置変更後にボルト
で固定する。The light transmitter 3a and the light receiver 3b of the laser outer diameter meter 3 are attached to both ends of the base plate 20 as shown in FIG. 1 (c), and notches 20a are provided in the middle of the base plate 20. The outer peripheral portion of the steel pipe P can be positioned. Base plate 20-1 of a pair of laser diametric meters 3-1 for longitudinal diameter D 1
Is installed on the surface of the measurement pedestal 2 (see FIG. 1A), and the base plate 20-of the pair of laser outer diameter meters 3-2 for the lateral diameter D 2 is provided .
2 is installed on the back surface (see FIG. 1 (b)). Further, in order to correspond to the steel pipe P having the maximum diameter to the minimum diameter, only the upper portion of the base plate 20-1 for the vertical diameter D 1 can be vertically adjusted, and the base plate 20-2 for the horizontal diameter D 2 can be adjusted. The left and right positions can be adjusted. The upper base plate 20-1 has mounting holes of 2 inch pitch in the vertical frame of the measuring pedestal 2, and the left and right base plates 20-2 have mounting holes of 1 inch pitch in the upper and lower frames of the measuring pedestal 2. Make holes and fix them with bolts after changing the position.
【００２１】移動量検出エンコーダ４は、図３に示すよ
うに、鋼管Ｐの下面に当接して転動するタイヤ２１に取
付けたパルスジェネレータ２２であり、計測架台２の下
面中央に設けた支持板２３にレバー２４を介して取付け
る。レバー２４は折曲可能な２つのリンクから構成し、
ばねにより鋼管下面に常時押圧されるようにする。光電
センサー５は投光器と受光器からなる透過型あるいは反
射型の光電スイッチであり、図２に示すように、計測架
台２に鋼管Ｐの中心を指向するように配設し、この検出
信号により各機器を動作状態とするインターロック用に
用いる。As shown in FIG. 3, the moving amount detecting encoder 4 is a pulse generator 22 attached to a tire 21 that rolls in contact with the lower surface of the steel pipe P, and a support plate provided at the center of the lower surface of the measurement pedestal 2. 23 is attached via a lever 24. The lever 24 is composed of two bendable links,
Always be pressed against the lower surface of the steel pipe by a spring. The photoelectric sensor 5 is a transmissive or reflective photoelectric switch composed of a light projector and a light receiver, and is arranged on the measurement stand 2 so as to point the center of the steel pipe P as shown in FIG. It is used for interlock that keeps the equipment in operation.
【００２２】演算処理装置６は、図１（ｄ）に示すよう
に、例えばノート型パソコン３０に拡張ボード３１・プ
リンター３２を接続して構成し、各レーザ外径計３の検
出信号をＣＯＭボード３３を介して、エンコーダ４の検
出信号をカウンタボード３４を介して、光電センサー５
の検出信号をＤｉｏボード３５を介して入力する。パソ
コン３０には、データ処理プログラムが収納されてお
り、光電センサー５の検出信号で計測を開始し、レーザ
外径計３の検出信号から縦径Ｄ1 ・横径Ｄ2 を算出し、
基準外径Ｄ* に対する偏差ΔＤ1 ・ΔＤ2 から真円度を
得る。また、エンコーダ４からの鋼管Ｐの長さ方向測定
値と合わせて鋼管Ｐの長さ方向に連続した真円度を得
る。これら計測値および演算結果は、パソコン画面に表
示し、必要なデータをプリンターにより出力する。さら
に、製管ラインの場合には必要に応じて結果を拡管機の
各種セット値に補正量としてフィードバックさせる。As shown in FIG. 1D, the arithmetic processing unit 6 is constituted by connecting an expansion board 31 and a printer 32 to a notebook personal computer 30, for example, and a detection signal of each laser outer diameter meter 3 is detected by a COM board. 33, the detection signal of the encoder 4 via the counter board 34, the photoelectric sensor 5
Detection signal is input via the Dio board 35. A data processing program is stored in the personal computer 30, the measurement is started by the detection signal of the photoelectric sensor 5, and the vertical diameter D 1 and the horizontal diameter D 2 are calculated from the detection signal of the laser outer diameter meter 3,
The roundness is obtained from the deviations ΔD 1 and ΔD 2 from the reference outer diameter D * . Further, the roundness which is continuous in the length direction of the steel pipe P is obtained by combining with the measurement value in the length direction of the steel pipe P from the encoder 4. These measured values and calculation results are displayed on a personal computer screen and the necessary data is output by a printer. Further, in the case of a pipe manufacturing line, the result is fed back to various set values of the tube expander as a correction amount as needed.
【００２３】以上のような構成において、次のように真
円度の測定を行う。これはＵＯＥ製管ラインの拡管工程
（メカニカルエキスパンダ）に簡易型真円度測定装置を
組み込んでオンライン測定する場合である。With the above structure, the roundness is measured as follows. This is a case where a simple roundness measuring device is incorporated into the pipe expanding process (mechanical expander) of the UOE pipe line to perform online measurement.
【００２４】(1) オフライン位置Ｂにおいて鋼管Ｐの外
径に応じて簡易型真円度測定装置１のレーザ外径計３の
取付位置を変更し、終了後に簡易型真円度測定装置１を
オフライン位置Ｂからオンライン位置Ａにセットする。(1) At the offline position B, the mounting position of the laser outer diameter meter 3 of the simple roundness measuring device 1 is changed according to the outer diameter of the steel pipe P, and after completion, the simple roundness measuring device 1 is Set from offline position B to online position A.
【００２５】(2) 拡管された鋼管Ｐが所定の速度で計測
架台２内を通過していくが、光電センサー５が管先端を
検出すると、計測が開始され、真円度が鋼管Ｐの長さ方
向に所定のピッチで測定される。(2) The expanded steel pipe P passes through the measuring pedestal 2 at a predetermined speed, but when the photoelectric sensor 5 detects the pipe tip, measurement is started and the roundness is the length of the steel pipe P. It is measured at a predetermined pitch in the depth direction.
【００２６】(3) 鋼管Ｐに多少の曲がりや反りがあって
もレーザ外径計の検出範囲内であれば、そのまま鋼管Ｐ
を移動させて測定することができるが、これより大きな
曲がり等に対しては、鋼管Ｐの移動を停止させ、上下方
向には高さ調整機構で計測架台２を昇降調整することに
より、左右方向へは走行台車１１を移動させて固定する
ことにより、対処することができる。(3) Even if the steel pipe P is slightly bent or warped, if it is within the detection range of the laser outer diameter meter, the steel pipe P is as it is.
Can be moved for measurement, but for a bend larger than this, the movement of the steel pipe P is stopped, and the height adjustment mechanism vertically adjusts the measurement pedestal 2 to move up and down. It can be dealt with by moving the traveling carriage 11 and fixing it.
【００２７】(4) 鋼管Ｐの長さ方向の真円度プロフィー
ルが得られ、この傾向を拡管機の各種セット値に補正量
としてフィードバックする。これにより、成品の寸法精
度を向上させ、更には工場歩留りを向上させることがで
きる。(4) A roundness profile in the length direction of the steel pipe P is obtained, and this tendency is fed back to various set values of the pipe expanding machine as a correction amount. As a result, the dimensional accuracy of the product can be improved and the factory yield can be improved.
【００２８】図６に示すのは、鋼管長さ方向真円度の測
定結果例である。この図６は、縦軸に鋼管長さ方向距離
を、横軸に縦径・横径の基準径に対する差（直径変異と
称する）をとったグラフであり、縦・横２方向の真円度
の長さ方向プロフィールを容易に把握することができ
る。なお、測定精度は３σ縦径・横径とも±１．５ｍｍ
程度であり、精度は良いほうではないが、長さ方向プロ
フィールは正確に把握することができる。長さ方向の最
小測定ピッチは１５０ｍｍ以下とするのがよく、管端部
は５０ｍｍ以内を必ず測定するようにする。FIG. 6 shows an example of measurement results of roundness in the length direction of the steel pipe. This FIG. 6 is a graph in which the vertical axis represents the distance in the length direction of the steel pipe and the horizontal axis represents the difference between the vertical diameter and the horizontal diameter with respect to the reference diameter (referred to as diameter variation). The longitudinal profile of the can be easily grasped. The measurement accuracy is ± 1.5 mm for both 3σ vertical and horizontal diameters.
The length profile can be grasped accurately, though the accuracy is not so good. The minimum measurement pitch in the length direction is preferably 150 mm or less, and the pipe end is always measured within 50 mm.
【００２９】次に、図４，図５の実施例は、鋼管Ｐに大
きな曲がりがあっても鋼管Ｐを停止させることなく、測
定できるようにしたものである。前述の測定装置の構造
であれば、基準外径の±２０ｍｍ程度の偏差範囲内の鋼
管Ｐの測定が可能であるが、長さ方向の曲がりの異常に
大きな鋼管Ｐがくると、上部のセンサーや計測架台の上
部枠に接触し、ひどい場合には破壊する恐れがある。こ
れを防止するために、センサーおよび計測架台を鋼管Ｐ
に追従して上昇可能としている。Next, in the embodiments shown in FIGS. 4 and 5, even if the steel pipe P has a large bend, measurement can be performed without stopping the steel pipe P. With the structure of the measuring device described above, it is possible to measure the steel pipe P within a deviation range of about ± 20 mm of the reference outer diameter. However, when a steel pipe P with an abnormally large bend in the length direction comes, the upper sensor It may come into contact with the upper frame of the measuring stand or may be destroyed in severe cases. In order to prevent this, install the sensor and measuring stand on the steel pipe P.
It is possible to rise by following.
【００３０】即ち、計測架台２を定置の計測架台２Ａと
これに対して上下移動可能な可動計測架台２Ｂから構成
し、可動計測架台２Ｂの上部に縦径センサーの上部ベー
ス板２０−１を介してハンマーキャスター４０を設け、
これを常に鋼管Ｐの上面に接触させ、異常曲がりの時に
は可動計測架台２Ｂを持ち上げてセンサー等を保護する
ようにしている。計測架台２Ａと２Ｂの縦枠間にはスラ
イド部材４１を介在させて可動計測架台２Ｂを上下移動
可能に支持し、計測架台２Ａと２Ｂの上部同士をフレー
ム調整ボルト４２と引っ張りバネ４３により連結してい
る。フレーム調整ボルト４２により可動計測架台２Ｂの
下限位置が設定され、引っ張りバネ４３により上下方向
に自由に昇降可能とされている。That is, the measurement pedestal 2 is composed of a stationary measurement pedestal 2A and a movable measurement pedestal 2B which can move vertically with respect to the stationary measurement pedestal 2A, and an upper base plate 20-1 of a longitudinal sensor is provided on the movable measurement pedestal 2B. Hammer caster 40,
This is always brought into contact with the upper surface of the steel pipe P, and when there is an abnormal bend, the movable measuring base 2B is lifted to protect the sensors and the like. A slide member 41 is interposed between the vertical frames of the measurement pedestals 2A and 2B to support the movable measurement pedestal 2B so as to be vertically movable, and the upper portions of the measurement pedestals 2A and 2B are connected by a frame adjustment bolt 42 and a tension spring 43. ing. The lower limit position of the movable measuring base 2B is set by the frame adjusting bolt 42, and the tension spring 43 allows it to freely move up and down.
【００３１】ハンマーキャスター４０は上部のベース板
２０−１に取付け、このベース板２０−１を可動計測架
台２Ｂに取付けるが、このベース板２０−１は種々の外
径の鋼管Ｐに応じて位置調整できるように可動計測架台
２Ｂに取付けなければならないため、形状を正面視ハン
ガー状とし、可動計測架台２Ｂの上枠中央に取付突起４
４を、左右縦枠にスライド部材４５を設けて上下移動可
能とし、段取替え用ロックピン４６によりベース板２０
−１の上部を取付突起４４に固定する。The hammer caster 40 is attached to the upper base plate 20-1, and the base plate 20-1 is attached to the movable measuring stand 2B. The base plate 20-1 is positioned depending on the steel pipe P having various outer diameters. Since it has to be attached to the movable measurement pedestal 2B so that it can be adjusted, the shape is made to be a hanger shape when viewed from the front, and the attachment protrusion 4 is provided at the center of the upper frame of the movable measurement pedestal 2B.
4 is provided with a slide member 45 on the left and right vertical frames so that it can be moved up and down.
The upper part of -1 is fixed to the mounting protrusion 44.
【００３２】以上のような構成において、鋼管Ｐの外径
に応じて上部のセンサーのベース板２０−１の上下位置
を調整してロックピン４６により固定する。ハンマーキ
ャスター４０により可動計測架台２Ｂが鋼管Ｐと共に上
下移動して計測が行われ、鋼管Ｐに異常に大きな曲がり
があっても可動計測架台２Ｂが鋼管Ｐと共に移動するこ
とにより測定装置機構部の破壊などのトラブルなく計測
を行うことができる。In the above structure, the upper and lower positions of the base plate 20-1 of the upper sensor are adjusted according to the outer diameter of the steel pipe P and fixed by the lock pin 46. The hammer caster 40 moves the movable measuring pedestal 2B up and down together with the steel pipe P to perform measurement, and even if the steel pipe P has an abnormally large bend, the movable measuring pedestal 2B moves together with the steel pipe P to destroy the mechanical unit of the measuring device. It is possible to measure without trouble.
【００３３】また、移動量計測値を用いて補正すれば精
度もダウンさせることはない。なお、定位置の計測架台
２Ａも同様に左右方向に追従移動できるようにしてもよ
い。Further, if the correction is made by using the movement amount measurement value, the accuracy is not lowered. Note that the fixed-position measurement pedestal 2A may be configured to be able to follow and move in the left-right direction as well.
【００３４】[0034]
【発明の効果】前述の通り、本発明は、合計４組の非接
触式位置検出センサーで被測定体の縦径・横径を計測
し、この縦径・横径と基準径との偏差から真円度を求
め、被測定体を移動させることにより真円度の被測定体
長さ方向の真円度プロフィールを得るように構成したた
め、次のような効果を奏する。As described above, according to the present invention, the vertical and horizontal diameters of the object to be measured are measured by a total of four sets of non-contact position detection sensors, and the deviation between the vertical and horizontal diameters and the reference diameter is calculated. Since the roundness is obtained and the object to be measured is moved to obtain the circularity profile in the length direction of the object to be measured, the following effects are achieved.
【００３５】(1) 計測架台に対して移動する被測定体の
縦径と横径を検出して真円度を求めるため、比較的簡単
な構造の測定装置とすることができ、さらに種々の大き
さの被測定体の真円度を簡単に測定することができると
共に、被測定体の長さ方向の真円度プロフィールを容易
に把握することができる。(1) Since the circularity is obtained by detecting the longitudinal and lateral diameters of the object to be measured which moves with respect to the measuring stand, a measuring device having a relatively simple structure can be provided, and further various measuring devices can be used. It is possible to easily measure the roundness of the object to be measured having a size, and it is possible to easily grasp the circularity profile in the length direction of the object to be measured.
【００３６】(2) 非接触式の位置検出センサーで被測定
体の縦径と横径を検出するため、位置検出センサーの計
測架台への取付け位置を変更することにより、広範囲に
わたる種々の寸法の被測定体の真円度を計測することが
できる。(2) Since the non-contact type position detection sensor detects the vertical and horizontal diameters of the object to be measured, by changing the mounting position of the position detection sensor on the measurement frame, a wide range of various sizes can be obtained. The roundness of the measured object can be measured.
【００３７】(3) 測定装置を平面的な簡易な構造とする
ことができ、製管ラインの拡管工程等のオンライン位置
に簡単に組み込むことができる。これにより、製造ライ
ンの拡管工程等へ計測値をフィードバックすることがで
きるため、鋼管寸法精度の向上を図り、歩留りを向上さ
せることができる。(3) The measuring device can have a simple and flat structure, and can be easily incorporated in an on-line position such as a pipe expanding process of a pipe manufacturing line. As a result, the measured value can be fed back to the pipe expanding process of the production line, etc., so that the dimensional accuracy of the steel pipe can be improved and the yield can be improved.
【００３８】(4) 位置検出センサーは非接触で所定の幅
の検出範囲を有しているため、被測定体に多少の曲がり
等があっても、支障なく計測を行うことができ、さらに
計測架台を移動可能とすることにより、鋼管に大きな曲
がり等があっても、測定装置機構部を壊すことなく、ま
た移動量計測値にて補正すれば精度もダウンさせること
なく、真円度の計測が可能となる。(4) Since the position detection sensor has a non-contact and has a detection range of a predetermined width, even if the object to be measured has a slight bend, the measurement can be performed without any trouble, and further measurement is possible. By making the gantry movable, even if there is a large bend in the steel pipe, the roundness can be measured without damaging the mechanism of the measuring device and without compromising the accuracy by compensating for the movement measurement value. Is possible.
【図１】この発明に係る真円度測定装置であり、（ａ）
は測定部の表側を示す正面図、（ｂ）は同様の裏側を示
す裏面図、（ｃ）はセンサー部を示す正面図、（ｄ）は
システム構成図である。FIG. 1 is a circularity measuring device according to the present invention.
Is a front view showing the front side of the measurement unit, (b) is a back view showing the same back side, (c) is a front view showing the sensor unit, and (d) is a system configuration diagram.
【図２】この発明に係る真円度測定装置の一実施例を示
す正面図である。FIG. 2 is a front view showing an embodiment of a roundness measuring device according to the present invention.
【図３】図１の真円度測定装置の側面図である。3 is a side view of the roundness measuring device of FIG. 1. FIG.
【図４】この発明に係る真円度測定装置の他の実施例で
あり、（ａ）は正面図、（ｂ）は側面図である。FIG. 4 is another embodiment of the roundness measuring device according to the present invention, in which (a) is a front view and (b) is a side view.
【図５】（ａ）は図４のＡ−Ａ線視図、（ｂ）は図４の
Ｂ−Ｂ線断面図である。5A is a view taken along the line AA of FIG. 4, and FIG. 5B is a cross-sectional view taken along the line BB of FIG.
【図６】この発明に係る真円度測定装置による測定結果
を示すグラフである。FIG. 6 is a graph showing measurement results by the roundness measuring device according to the present invention.
【図７】従来の種々の測定方式による真円度測定装置を
示す概略図である。FIG. 7 is a schematic view showing a roundness measuring device according to various conventional measuring methods.
Ｐ…鋼管（被測定体） １…簡易型真円度測定装置 ２…計測架台 ３…レーザ外径計（位置検出センサー） ３ａ…投光器 ３ｂ…受光器 ４…移動量検出エンコーダ（移動量検出センサー） ５…光電センサー（端部検出センサー） ６…演算処理装置 １０…レール １１…走行台車 １２…車輪 １３…クランプ板 １４…クランプレバー １５…リニアベアリング １６…ガイドロッド １７…スクリューロッド １８…ハンドル １９…ナット部材 ２０…ベース板 ２１…タイヤ ２２…パルスジェネレータ ２３…支持板 ２４…レバー ３０…ノート型パソコン ３１…拡張ボード ３２…プリンター P ... Steel pipe (measurement object) 1 ... Simplified roundness measuring device 2 ... Measuring pedestal 3 ... Laser outer diameter meter (position detection sensor) 3a ... Emitter 3b ... Light receiver 4 ... Movement amount detection encoder (movement amount detection sensor) ) 5 ... Photoelectric sensor (end detection sensor) 6 ... Arithmetic processing device 10 ... Rail 11 ... Traveling vehicle 12 ... Wheel 13 ... Clamp plate 14 ... Clamp lever 15 ... Linear bearing 16 ... Guide rod 17 ... Screw rod 18 ... Handle 19 ... Nut member 20 ... Base plate 21 ... Tire 22 ... Pulse generator 23 ... Support plate 24 ... Lever 30 ... Laptop computer 31 ... Expansion board 32 ... Printer
Claims (4)
の長さ方向にわたって測定する管の真円度測定装置であ
って、 前記被測定体が挿通可能な計測架台と、この計測架台に
取付けられ、被測定体の上端・下端および左端・右端の
位置を非接触で検出する位置検出センサーと、被測定体
の長さ方向の移動量を検出する移動量検出センサーと、
被測定体の端部を検出する端部検出センサーと、前記各
センサーの検出信号を用いて、被測定体の基準外径に対
する被測定体の縦径および横径の偏差を算出し、被測定
体の長さ方向の真円度分布を求める演算処理手段を備え
ていることを特徴とする管の真円度測定装置。1. A circularity measuring device for a pipe, which measures the circularity of an object to be measured having a circular cross section in the longitudinal direction of the object to be measured, and a measuring stand through which the object to be measured can be inserted. A position detection sensor that is attached to the measurement stand and detects the positions of the upper and lower ends and the left and right ends of the measured object without contact, and a movement amount detection sensor that detects the amount of movement of the measured object in the longitudinal direction,
An end detection sensor that detects the end of the object to be measured, and using the detection signals of each sensor, calculate the deviation of the longitudinal and lateral diameters of the object to be measured from the reference outer diameter of the object to be measured, A circularity measuring device for a pipe, comprising arithmetic processing means for obtaining a circularity distribution in a length direction of a body.
おいて、計測架台は被測定体の左右方向に移動可能であ
ることを特徴とする管の真円度測定装置。2. The roundness measuring device for a pipe according to claim 1, wherein the measuring stand is movable in the left-right direction of the object to be measured.
円度測定装置において、計測架台は上下方向に移動可能
に支持されていることを特徴とする管の真円度測定装
置。3. The roundness measuring device for a pipe according to claim 1 or 2, wherein the measuring pedestal is supported so as to be vertically movable.
円度測定装置において、計測架台を上下移動可能に支持
し、この計測架台に被測定体上を転動し得るローラを設
けたことを特徴とする管の真円度測定装置。4. The pipe roundness measuring device according to claim 1 or 2, wherein a measuring platform is supported so as to be vertically movable, and the measuring platform is provided with a roller capable of rolling on the object to be measured. A roundness measuring device for pipes characterized by the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8041221A JP3028058B2 (en) | 1996-02-28 | 1996-02-28 | Pipe roundness measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8041221A JP3028058B2 (en) | 1996-02-28 | 1996-02-28 | Pipe roundness measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09229653A true JPH09229653A (en) | 1997-09-05 |
| JP3028058B2 JP3028058B2 (en) | 2000-04-04 |
Family
ID=12602350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8041221A Expired - Fee Related JP3028058B2 (en) | 1996-02-28 | 1996-02-28 | Pipe roundness measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3028058B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100415446C (en) * | 2006-07-21 | 2008-09-03 | 上海大学 | Tracking method of on-line measuring roundness error and machine tool main axle error |
| JP2010151503A (en) * | 2008-12-24 | 2010-07-08 | Toto Sekisui Kk | Device for measuring outer diameter |
| CN105157600A (en) * | 2015-05-30 | 2015-12-16 | 深圳赤湾胜宝旺工程有限公司 | Steel pipe contour online measurement method |
| CN109282756A (en) * | 2018-11-16 | 2019-01-29 | 南京仁恒轴承滚动体有限公司 | A kind of needle roller circularity detection device |
| CN109696135A (en) * | 2018-12-20 | 2019-04-30 | 安徽工程大学 | A kind of cast tube sockets circularity non-contact automatic detection method |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010071778A (en) * | 2008-09-18 | 2010-04-02 | Sumitomo Metal Ind Ltd | Apparatus for measuring outer diameter of large diameter tube |
| US11692805B2 (en) | 2021-08-25 | 2023-07-04 | Saudi Arabian Oil Company | Identification system for tubulars |
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1996
- 1996-02-28 JP JP8041221A patent/JP3028058B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100415446C (en) * | 2006-07-21 | 2008-09-03 | 上海大学 | Tracking method of on-line measuring roundness error and machine tool main axle error |
| JP2010151503A (en) * | 2008-12-24 | 2010-07-08 | Toto Sekisui Kk | Device for measuring outer diameter |
| CN105157600A (en) * | 2015-05-30 | 2015-12-16 | 深圳赤湾胜宝旺工程有限公司 | Steel pipe contour online measurement method |
| CN109282756A (en) * | 2018-11-16 | 2019-01-29 | 南京仁恒轴承滚动体有限公司 | A kind of needle roller circularity detection device |
| CN109696135A (en) * | 2018-12-20 | 2019-04-30 | 安徽工程大学 | A kind of cast tube sockets circularity non-contact automatic detection method |
| CN109696135B (en) * | 2018-12-20 | 2020-11-27 | 安徽工程大学 | Non-contact automatic detection method for roundness of bell mouth of cast tube |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3028058B2 (en) | 2000-04-04 |
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