JPS5850407A - Device for measuring bending of tube body end part - Google Patents
Device for measuring bending of tube body end partInfo
- Publication number
- JPS5850407A JPS5850407A JP14896281A JP14896281A JPS5850407A JP S5850407 A JPS5850407 A JP S5850407A JP 14896281 A JP14896281 A JP 14896281A JP 14896281 A JP14896281 A JP 14896281A JP S5850407 A JPS5850407 A JP S5850407A
- Authority
- JP
- Japan
- Prior art keywords
- tube
- tube body
- distance
- measurement
- sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/28—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring contours or curvatures
- G01B7/281—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring contours or curvatures for measuring contour or curvature along an axis, e.g. axial curvature of a pipeline or along a series of feeder rollers
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は管体端部の曲シを測定する装置の改良に関する
。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a device for measuring the bending of a tube end.
従来、例えば中径管製造工場では、第１図のような製造
工程にしたがって中径管を製造している。即ち、加熱炉
から取り出した溶融金属体を造管工程で造管した後、こ
の造管工程から取り出した管体を冷却し矯正を行なう。Conventionally, for example, in a medium-diameter pipe manufacturing factory, medium-diameter pipes are manufactured according to a manufacturing process as shown in FIG. That is, after a molten metal body taken out of a heating furnace is formed into a pipe in a pipe-making process, the pipe body taken out from this pipe-making process is cooled and straightened.
この矯正後の管体は自動磁気探１％（Ａｓｓ）に付さバ
、特に管体端部の曲シの大きいものはＡ８Ｓ疵取台で曲
りを測定し切断位置をマーキングし、そのマーキングに
したがって切断し面取りを行なう。この切断・面取りは
切断・面取機で行ない、ここで切断・面取シされた管体
はネジ切り機でネジ加工を行ない、そのネジ加工の検査
を行なった後、精整工程を経て出荷する。After this straightening, the tube body is placed on an automatic magnetic probe 1% (Ass).In particular, for tubes with large bends at the ends, the bends are measured with an A8S flaw removal stand, and the cutting position is marked. Therefore, cut and chamfer. This cutting and chamfering is performed using a cutting and chamfering machine, and the pipe body that has been cut and chamfered here is threaded using a threading machine.After inspecting the threading, it is shipped through a finishing process. do.
ところで、従来、管体端部の曲シ測定は２通夛の方法で
行なっている。その１つは第２図に示すストレートエツ
ジ＋スキミｒ−ジ法であり、他の１つは第３図に示すス
トレートエラ・ノ＋ダイヤルｒ−ジ法である。先ず、前
者の測定法は中径管製造工場で用いられている一般的な
方法 “である。これはターニングローラｌに測
定すべき管体２番乗せて静止状態とした後、ストレート
エツジ３を管体表面に当て、スキオｒ−ジ４で端部の曲
り値を測定するものである。この場合、曲）の最大値を
求めるために、管体２をターニングローラ１により適宜
回転し位置を変えて測定している。By the way, conventionally, the bending of the end of the tube has been measured using two methods. One of them is the straight edge + skimming radius method shown in FIG. 2, and the other is the straight edge + dial radius method shown in FIG. 3. First, the former measurement method is a general method used in medium-diameter pipe manufacturing factories.In this method, the pipe body No. 2 to be measured is placed on the turning roller L, and the straight edge No. 3 is placed in a stationary state. The tube body 2 is applied to the surface of the tube body and the bending value of the end is measured using a ski roller 4. In this case, in order to find the maximum value of the curve, the tube body 2 is appropriately rotated using a turning roller 1 to determine the position. I'm changing it and measuring it.
一方、後者の測定法は、前者の測定法に用いたスキミゲ
ージ４の代シにダイヤルケ゛−ジ５を用いて曲り値を直
読するものである。On the other hand, the latter measuring method uses a dial cage 5 instead of the skim gauge 4 used in the former measuring method to directly read the bending value.
しかし、上述する従来の２つの測定法は、接触式であシ
、かつ手動操作であるため次のような問題点がある。However, since the two conventional measuring methods described above are contact-type and manually operated, they have the following problems.
■ 測定時間が長く、オンラインへ設備化することが難
しい。■ Measurement time is long and it is difficult to bring the equipment online.
■ 測定精度が劣る。つまり、片手でセットしたストレ
ートエツジ３を押え、他方の手でスキマを測定するため
、測定精度および再現性が劣る。■ Poor measurement accuracy. That is, since the set straight edge 3 is held down with one hand and the gap is measured with the other hand, measurement accuracy and reproducibility are poor.
■ 測定値の記録ができない。■ Measured values cannot be recorded.
■ 切断位置へのマーキングの吹付は精度が悪い。■ Spraying markings at cutting locations has poor accuracy.
■ ｒ−ゾの破損およびエツジの摩耗などの発生が多い
等々の欠点がある。(2) There are disadvantages such as frequent occurrence of r-zo damage and edge wear.
本発明は上記実情にかんがみてなされたもので、管体端
部の曲シを自動的に測定し、最適な管端切断位置を決め
ることにより、ネジ加工不良の発生を防止し歩留りの向
上を図る管体の端部曲り測定装置を提供することを目的
とする。The present invention was developed in view of the above circumstances, and by automatically measuring the bending of the tube end and determining the optimal tube end cutting position, it is possible to prevent thread processing defects and improve yield. It is an object of the present invention to provide a device for measuring the end bending of a pipe body.
以下、本発明の一実施例を説明するに際し、先ず、第４
図にて曲り測定の原理を説明する。Hereinafter, when explaining one embodiment of the present invention, first, the fourth embodiment will be explained.
The principle of bending measurement will be explained with reference to the figure.
同図におりで１１は管体、１２．１３は管体１１までの
距離を測定する距離測定用センサ、１４は曲り測定演算
部であってこれはブリッジ回路、正帰還回路などその回
路形態は問わないが、距離測定範囲の広い正帰還回路が
有利である。この測定原理は、距離測定用センサ１２で
直管部の距離Δｄ′、距離測定用センサ１３で管体端部
の曲り部の距離Δｄ／／ｌ、測定し、これらの両距離信
号を曲り測定演算部１４により、Δｄ“（ｋ）−Δｄ’
（ｋ）なる演算を行なって曲りΔｄを求めるものである
。上式においてｋは捕正値である。In the figure, 11 is a tube body, 12 and 13 are distance measurement sensors that measure the distance to the tube body 11, and 14 is a bending measurement calculating section, which has a circuit form such as a bridge circuit or a positive feedback circuit. Although it does not matter, a positive feedback circuit with a wide distance measurement range is advantageous. The principle of this measurement is that the distance measuring sensor 12 measures the distance Δd' of the straight pipe part, and the distance measuring sensor 13 measures the distance Δd//l of the bent part of the pipe end, and these two distance signals are used to measure the bending. The calculation unit 14 calculates Δd"(k)-Δd'
The calculation (k) is performed to obtain the bending Δd. In the above equation, k is a correction value.
次に、第５図は上述した測定原理に基づいて具体化した
一実施例の装置の構成を示す図である。この装置にあっ
ては、測定すべき管体１１を例えばシリンダーによる昇
降型のターニングローラ２１．２１上に乗せて静止し、
基準線Ａ上にあってかつ管体１１のＭ管部と管体端部と
の外壁に向けてそれぞれ距離測定用センサ１２゜１３を
配置する。距離測定用センサ１２は測定台車２２の先端
に装備された直管部測定ヘラｒ２３に取着され、また距
離測定用センサ１３け横送り装置２４の駆動で回転する
スクリュ２５に吊下せる曲シ部測定ヘッド２６に取着さ
れている。２７は切断位置指示用マーキング装置である
。Next, FIG. 5 is a diagram showing the configuration of an apparatus according to an embodiment based on the above-mentioned measurement principle. In this device, the tube body 11 to be measured is placed on, for example, an elevating turning roller 21, 21 using a cylinder, and is kept stationary.
Distance measuring sensors 12 and 13 are placed on the reference line A and toward the outer walls of the M tube portion and the tube end portion of the tube body 11, respectively. The distance measuring sensor 12 is attached to a straight pipe part measuring spatula r23 equipped at the tip of the measuring cart 22, and also has a curved part that can be suspended from a screw 25 which is rotated by the drive of a transverse feeder 24. It is attached to the measurement head 26. 27 is a marking device for indicating the cutting position.
次に、第５図に示す装置の作用を説明する。Next, the operation of the apparatus shown in FIG. 5 will be explained.
先ず、作業開始時のキャリブレーションは、測定台車２
２をオンラインの位置とし、測定すべき管体１１と同じ
外径の較正試験片を設定し、測定ヘッド２３．１６によ
り距離測定用センサ１２．１３の高さを調整し、次に電
気的な感度の較正を行なう。First, the calibration at the start of work is carried out using the measurement cart 2.
2 in the on-line position, a calibration test piece with the same outer diameter as the tube 11 to be measured is set, the height of the distance measurement sensor 12.13 is adjusted by the measuring head 23.16, and then the electrical Calibrate the sensitivity.
キャリプレジョン終了後、測定台車２２をオンラインの
定められた位置に固定する。この状態において管体１１
は前工程のアライメントロール（図示せず）により管体
端部が揃ってター５−
エングロール２１上に送られてくる。ターニングロール
２ノは、昇降機能を持っており、管体１ノを検出すると
上昇動作を行なう。管体１ノがターニングロール２ノの
上昇端に達すると、同ロール２ノは回転し、かつ距離測
定用センサ１２．１３は管体１１までの距離を測定する
。After the calipresion is completed, the measurement cart 22 is fixed online at a predetermined position. In this state, the pipe body 11
The tube ends are aligned and sent onto the tar 5-engraving roll 21 by an alignment roll (not shown) in the previous step. The turning roll 2 has an elevating function and performs an elevating operation when it detects the tube body 1. When the tube 1 reaches the rising end of the turning roll 2, the roll 2 rotates and the distance measuring sensors 12, 13 measure the distance to the tube 11.
この場合、曲９部距離測宇用センサ１３は切断位置を求
めるために管体１１と平行ＫＡ行する。In this case, the distance measuring sensor 13 at the 9th part of the track moves in parallel with the tubular body 11 in a KA direction in order to find the cutting position.
そして、距離測定用センサ１３で測定した距離測定値は
予め設定した基準値と比較し、管体１１の切断位値を求
める。ここで、切断位値が求まると、この切断位置にし
たがってマーキング装置２７が動作し管体１ノにマーキ
ングを行なう。測定が完了すると管体１１は下降し、曲
シ部測定へ、ド２６は測定用始点まで後退する。The distance measurement value measured by the distance measurement sensor 13 is then compared with a preset reference value to determine the cutting position of the tubular body 11. Here, once the cutting position value is determined, the marking device 27 operates according to this cutting position to mark the tube body 1. When the measurement is completed, the tube 11 is lowered to measure the curved portion, and the dome 26 is retreated to the starting point for measurement.
ターニングローラ２１の下降点において管体１１は次工
程へ送られ、新しい管体１１の供給を待つ。このようＫ
して一工程が完了する。At the descending point of the turning roller 21, the tubular body 11 is sent to the next process and waits for a new tubular body 11 to be supplied. K like this
One step is completed.
次に、第６図は装置の測定回路系について示す図である
。先ず、発信器３１から出力された６−
交流信号を増幅器Ｊ ２ 、 、？ Ｊで増幅した後、
それぞれの距離測定用センサ１２．１３に供給する。こ
こで、両センサ１２，１３は増幅器３２゜３３の信号で
励磁されて磁界を生じ、これによって管体１１に渦電流
が発生する。そこで、この渦電流の変化を距離測定用セ
ンサ１２，１３でコイルインダクタンスの変化として検
出し、位相検波によシ増幅器Ｊ ２ 、３３より距離測
定信号を出力する。そして、直管部での測定信号と曲９
部での測定信号は演算回路３４に入り１ここで両信号の
差から曲り値を求める。また、この演算回路３４は、マ
ーキング制御の用に供するセンサ３５からの管体長手方
向の位置信号とセンサ３６からの管体回転方向の位置信
号とから上記測定信号を得たときの管体部位を求める。Next, FIG. 6 is a diagram showing the measurement circuit system of the apparatus. First, the 6-AC signal output from the transmitter 31 is input to the amplifier J 2 , , ? After amplifying with J,
It is supplied to each distance measuring sensor 12,13. Here, both sensors 12 and 13 are excited by the signals from the amplifiers 32 and 33 to generate a magnetic field, which generates an eddy current in the tube body 11. Therefore, the distance measurement sensors 12 and 13 detect this change in eddy current as a change in coil inductance, and the phase detection amplifiers J 2 and 33 output a distance measurement signal. Then, the measurement signal at the straight pipe section and track 9
The measurement signal at the section enters the arithmetic circuit 34, where the bending value is determined from the difference between the two signals. Further, this arithmetic circuit 34 calculates the position of the tube body when the measurement signal is obtained from the position signal in the longitudinal direction of the tube body from the sensor 35 used for marking control and the position signal in the tube rotation direction from the sensor 36. seek.
さらに、演算回路３４は管体の回転によって逐次求めら
れる前記的り値と予め定めた曲り設定値とを比較し両値
の一１致をもってマーキングのための信号を出力する。Further, the arithmetic circuit 34 compares the hit value successively obtained by rotating the tube with a predetermined bending setting value, and outputs a signal for marking when the two values match.
このようにして演算回路３４で求めたそれぞれの信号は
シリセット回路３７を介してダート回路３８に供給され
るが、このダート回路３８は例えば管体一回転ごとに測
定信号を得るものであればターニングローラ２１の回転
始めと回転終了とを用いてダートを開は上記それぞれの
信号を出力する。また、管体１１のある距離までを複数
回転させて所望の信号を得る場合には、管回転方向の位
置信号やプリセット回路３７に予め設定する例えば測定
タイミング信号および管体外径情報等を用いてｒ−ト開
の時間を決定する。このようにしてｒ−）回路３８から
出力された曲り値と部位の信号は記録表示部３９に表示
され、またマーキングのための信号はシフトレジスタ４
θを介してマーキング回路４ノに導入され管体切断位置
のための信号を出力するものである。The respective signals obtained by the arithmetic circuit 34 in this way are supplied to the dart circuit 38 via the series reset circuit 37, but if the dart circuit 38 is to obtain a measurement signal for each rotation of the tube, for example, When the dart is opened using the start and end of rotation of the roller 21, the above-mentioned respective signals are output. In addition, when obtaining a desired signal by rotating the tube 11 several times up to a certain distance, a position signal in the tube rotation direction, a measurement timing signal preset in the preset circuit 37, and information on the outer diameter of the tube, etc., are used. Determine the time of r-t opening. The bending value and position signals outputted from the r-) circuit 38 in this way are displayed on the recording display section 39, and the signal for marking is outputted from the shift register 38.
It is introduced into the marking circuit 4 via θ and outputs a signal for determining the tube cutting position.
なお、本発明は上記実施例に限定されるものではない。Note that the present invention is not limited to the above embodiments.
例えば直管部に配置する距離測定用センサ１２は１個に
限らないことは言うまでもない。For example, it goes without saying that the number of distance measurement sensors 12 disposed in the straight pipe section is not limited to one.
以上詳記したように本発明によれば、管体端部の切断は
大部分一定長さであるが、適切な切断位置を指示するこ
とにより、製品の歩留りを上げることができる。また、
管体端部の形状が保証されれば、ネジ加工不良（主に黒
皮不良）の発生を減少できる。また、測定台の記録がで
き、しかも非接触で測定できるため従来のようなｒ−ゾ
の破損やエツジの磨耗等の不具合も解消できる管体の端
部的り測定装置を提供できる。As described in detail above, according to the present invention, although most of the ends of the tube are cut to a constant length, the yield of the product can be increased by indicating an appropriate cutting position. Also,
If the shape of the tube end is guaranteed, the occurrence of thread processing defects (mainly black spots) can be reduced. In addition, it is possible to provide a tube end mark measuring device that can record the measuring stand and perform non-contact measurement, thereby eliminating problems such as damage to the r-zo and edge abrasion, which are conventional.
第１図は中径管製造に於ける従来の一般的製造工程を示
す図、第２図および第３図はそれぞれ従来の曲り測定法
を説明する図、第４図ないし第６図は本発明に係る管体
の端部的り測定装置を説明する図であって、第４図は測
定原理を示す図、第５図は装置全体の構成図、第６図は
曲り測定系の回路構成図である。
１１・・・管体、１２．１３・・・距離測定用センサ、
２ノ・・・ターニングローラ、２２・・・測定台車、２
３・・・直管部測定ヘッド、２６・・・曲り部測定へ、
ト、２ｆ／・・・マーキング装置、３ノ・・・発信器、
９−
３２．３３・・・増幅器、３４・・・演算回路、３７・
・・プリセット回路、３８・・・ダート回路、３９・・
・記録表示部、４０・・・シフトレジスタ、４１・・・
マーキング回路。
出願人代理人 弁理士 鈴 江 武 彦１０−Fig. 1 is a diagram showing a conventional general manufacturing process in manufacturing medium diameter pipes, Figs. 2 and 3 are diagrams each explaining a conventional bending measurement method, and Figs. 4 to 6 are diagrams showing the present invention. FIG. 4 is a diagram illustrating the measurement principle, FIG. 5 is a configuration diagram of the entire device, and FIG. 6 is a circuit configuration diagram of a bend measurement system. It is. 11... Pipe body, 12.13... Distance measurement sensor,
2... Turning roller, 22... Measuring trolley, 2
3... Straight pipe section measurement head, 26... Bent section measurement,
G, 2f/... marking device, 3... transmitter,
9- 32.33...Amplifier, 34...Arithmetic circuit, 37.
...Preset circuit, 38...Dirt circuit, 39...
・Record display section, 40...Shift register, 41...
marking circuit. Applicant's agent Patent attorney Takehiko Suzue 10-
Claims (1)
する複数の距離測定用センサと、これらのセンサによっ
て得た距離測定信号を用いて梼管体の曲り値を求め、ま
た管体長手方向の位置信号と管体回転方向の位Ｉｋ信号
から上記曲シ値の管体部位を求める測定演算部とを備え
念ことを特徴とする管体の端部曲り測定装置。A plurality of distance measurement sensors are used to measure the distance from the reference line to the straight pipe part and the end of the pipe body, and the distance measurement signals obtained by these sensors are used to determine the bending value of the pipe body. An apparatus for measuring the bending of an end of a tube, characterized in that it is equipped with a measurement calculation unit that determines the portion of the tube having the bending value from a position signal in the longitudinal direction of the tube and a position Ik signal in the rotational direction of the tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14896281A JPS5850407A (en) | 1981-09-21 | 1981-09-21 | Device for measuring bending of tube body end part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14896281A JPS5850407A (en) | 1981-09-21 | 1981-09-21 | Device for measuring bending of tube body end part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5850407A true JPS5850407A (en) | 1983-03-24 |
Family
ID=15464546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14896281A Pending JPS5850407A (en) | 1981-09-21 | 1981-09-21 | Device for measuring bending of tube body end part |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5850407A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60185102A (en) * | 1984-03-05 | 1985-09-20 | Nippon Kokan Kk <Nkk> | Curvature measuring device for steel pipe |
| JPS63246607A (en) * | 1987-03-31 | 1988-10-13 | Sumitomo Metal Ind Ltd | Method and apparatus for measuring bending of pipe or rod material |
| JP2008221267A (en) * | 2007-03-12 | 2008-09-25 | Jfe Steel Kk | Plug bar center detecting apparatus for seamless steel tube |
| CN106077153A (en) * | 2016-08-12 | 2016-11-09 | 太原泰立机电新技术有限公司 | A kind of test device of bending machine upper sectional material bending force |
-
1981
- 1981-09-21 JP JP14896281A patent/JPS5850407A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60185102A (en) * | 1984-03-05 | 1985-09-20 | Nippon Kokan Kk <Nkk> | Curvature measuring device for steel pipe |
| JPS63246607A (en) * | 1987-03-31 | 1988-10-13 | Sumitomo Metal Ind Ltd | Method and apparatus for measuring bending of pipe or rod material |
| JP2008221267A (en) * | 2007-03-12 | 2008-09-25 | Jfe Steel Kk | Plug bar center detecting apparatus for seamless steel tube |
| CN106077153A (en) * | 2016-08-12 | 2016-11-09 | 太原泰立机电新技术有限公司 | A kind of test device of bending machine upper sectional material bending force |
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