JPH02104476A - Groove profiling method for narrow groove welding - Google Patents

Groove profiling method for narrow groove welding

Info

Publication number
JPH02104476A
JPH02104476A JP25429288A JP25429288A JPH02104476A JP H02104476 A JPH02104476 A JP H02104476A JP 25429288 A JP25429288 A JP 25429288A JP 25429288 A JP25429288 A JP 25429288A JP H02104476 A JPH02104476 A JP H02104476A
Authority
JP
Japan
Prior art keywords
groove
welding torch
welding
narrow
television camera
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
Application number
JP25429288A
Other languages
Japanese (ja)
Other versions
JPH0632862B2 (en
Inventor
Takanori Nishimura
隆則 西村
Yuji Sugitani
祐司 杉谷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP63254292A priority Critical patent/JPH0632862B2/en
Publication of JPH02104476A publication Critical patent/JPH02104476A/en
Publication of JPH0632862B2 publication Critical patent/JPH0632862B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE:To always accurately position a welding torch in a narrow groove by fitting a telecamera and lighting fixtures for the narrow groove integrally with the welding torch and regulating a computer so that the groove central position in brought in line with the position of the welding torch by the telecamera. CONSTITUTION:In welding equipment to perform profile welding automatically on an I type narrow groove 2 between members 1 and 1 to be welded by the welding torch 3, the telecamera 4 is fixed on the welding torch 3 by a supporting arm 5 and the lighting fixtures 6 and 6' are fitted to the telecamera 4 by supporting arms 7 and 7'. The processing region W to cross orthogonally to the narrow groove 2 and the groove center Pc are inputted from an input mechanism 11 to a microcomputer 10 and stored therein. At the time of welding the narrow groove 2 by the movement of the welding torch 3, the narrow groove 2 is picked up by the telecamera 4 by the lighting fixtures 6 and 6' and stored in an image memory 9. The luminance distribution is obtained from a processing region signal in an image by the telecamera 4 and the groove central position is calculated by differentiating process and the welding torch is moved so as to correct an interval between the groove central position and the position of the welding torch to bring these in line with each other and automatic profile welding is performed.

Description

【発明の詳細な説明】 (産業上の利用分野) この発明は、狭開先溶接時における開先倣い方法に関す
るものである。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a groove tracing method during narrow gap welding.

〔従来の技術〕[Conventional technology]

溶接トーチを開先中心に常に自動的に位置させるための
開先倣い方法として、次の方法が知られている。
The following method is known as a groove tracing method for always automatically positioning the welding torch at the center of the groove.

(a)  アークセンサによる倣い方法溶接トーチをV
開先内において、その幅方向に揺動させつつ溶接を行な
い、このときの溶接トーチの高さ方向の変位に伴なう溶
接電流またはアーク電圧の微小な変化を検出し、検出さ
れた溶接電流またはアーク電圧によって、溶接トーチを
倣わせる。
(a) Tracing method using an arc sensor Welding torch
Welding is performed within the groove while swinging it in the width direction, and the minute changes in the welding current or arc voltage due to the displacement of the welding torch in the height direction are detected, and the detected welding current is measured. Or make the welding torch follow the arc voltage.

(b)  接触代センサによる倣い方法溶接トーチに接
続されたセンサを開先に接触させ、このセンサによって
溶接トーチを倣わせる。
(b) Tracing method using a contact allowance sensor A sensor connected to a welding torch is brought into contact with the groove, and the welding torch is caused to trace by this sensor.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

上記(a)のアークセンサによる倣い方法は、■開先の
ように、開先の幅方向に溶接トーチを揺動させたときに
、トーチの先端と開先面との間の距離に変化が生ずるこ
とが倣いの条件である。従って、溶接トーチの先端と開
先面との間の距離が変化しないI型の狭開先においては
、実施することができない。
The tracing method using the arc sensor in (a) above is as follows: ■ When the welding torch is swung in the width direction of the groove, as in the case of a groove, the distance between the torch tip and the groove surface changes. The condition for imitation is that it occurs. Therefore, it cannot be carried out in an I-shaped narrow groove where the distance between the tip of the welding torch and the groove surface does not change.

上記(b)の接触代センサによる倣い方法は、センサを
開先内に挿入し開先面に接触させることが倣いの条件で
あるが、■型の狭開先の場合には、このようなセンサを
開先内に挿入し開先面に接触させることができない。
In the copying method using the contact gap sensor in (b) above, the condition for copying is to insert the sensor into the groove and bring it into contact with the groove surface, but in the case of a type ■ narrow groove, such It is not possible to insert the sensor into the groove and contact the groove surface.

従って、この発明の目的は、従来のセンサでは倣いが不
可能な!型の狭開先の溶接に当り、溶接トーチを開先中
心に常に自動的に位置させることができる狭開先の倣い
方法を提供することにある。
Therefore, the object of the present invention is to perform tracing that is impossible with conventional sensors! To provide a method for tracing a narrow gap in which a welding torch can always be automatically positioned at the center of the groove when welding a narrow gap in a mold.

〔課題を解決するための手段] この発明は、狭開先を溶接するための溶接トーチに、前
記狭開先の開先線方向に近接させて、前記溶接トーチと
一体的にテレビカメラを設け、且つ、前記テレビカメラ
の左右に、前記狭開先をその両側の斜め上方から照明す
るための照明器を前記テレビカメラと一体的に設け、 前記狭開先の開先線と直交する、開先中心から一定範囲
の領域を処理領域と定め、前記処理領域および開先中心
位置をコンピュータに記憶せしめ、前記溶接トーチおよ
び前記テレビカメラを、前記狭開先の開先中心に位置せ
しめた後、前記溶接トーチおよび前記テレビカメラを前
記狭開先の開先線に沿って移動せしめ、そして、前記溶
接トーチにより溶接を開始し、前記照明器によって、前
記狭開先の開先内と開先肩部との間に明暗差が生ずるよ
うに前記狭開先を照明し、そして、前記テレビカメラに
よって前記狭開先を撮影し、前記テレビカメラによって
撮影された画像中の前記処理領域に相当する領域の画像
信号を積分処理して、前記処理領域に相当する領域の輝
度分布を求め、得られた輝度分布を微分処理し、その最
大微分値に基いて、前記テレビカメラにより撮影された
時点における開先中心位置を算出し、このようにして算
出された前記開先中心位置と、前記テレビカメラでのt
!形影時おける溶接トーチの位置とを、溶接進行方向に
おける両者の隔たりを補正した後に、前記コンピュータ
によって比較し、両者が一致するように前記溶接トーチ
および前記テレビカメラを前記狭開先の開先幅方向に移
動せしめ、かくして、前記溶接トーチの位置を調整する
ことに特徴を有するものである。
[Means for Solving the Problems] The present invention provides a welding torch for welding a narrow gap, and a television camera is provided integrally with the welding torch in close proximity to the groove line direction of the narrow gap. , and illuminators for illuminating the narrow gap from diagonally above on both sides of the television camera are provided integrally with the television camera, and illuminators for illuminating the narrow gap from diagonally above on both sides thereof are provided integrally with the television camera; After defining a certain range of area from the center of the tip as a processing area, storing the processing area and the groove center position in a computer, and positioning the welding torch and the television camera at the groove center of the narrow groove, The welding torch and the television camera are moved along the groove line of the narrow groove, and the welding torch starts welding, and the illuminator illuminates the inside of the groove and the groove shoulder of the narrow groove. illuminating the narrow gap so as to create a difference in brightness between the narrow gap and the narrow gap, and photographing the narrow gap with the television camera, and an area corresponding to the processing area in the image photographed by the television camera; The brightness distribution of the area corresponding to the processing area is obtained by integrating the image signal of The center position of the groove is calculated, and the center position of the groove calculated in this manner and t at the television camera are calculated.
! The computer compares the position of the welding torch with the position of the welding torch at the time of the shape, after correcting the gap between the two in the direction of welding progress, and adjusts the welding torch and the television camera to the groove width of the narrow gap so that the two match. The present invention is characterized in that the position of the welding torch is adjusted by moving the welding torch in the direction of the welding torch.

次に、この発明を、図面を参照しながら説明する。第1
図は、この発明の一実施態様を示す説明図である。■型
の狭開先2が形成された被溶接物1.1′の狭開先2に
、溶接トーチ3が配設されている。溶接トーチ3は、図
示しない駆動機構により、狭開先2を溶接しながらその
開先線に沿って移動し、且つ、トーチ位置制御機構12
により狭開先2の幅方向に移動可能になっている。
Next, the present invention will be explained with reference to the drawings. 1st
The figure is an explanatory diagram showing one embodiment of the present invention. A welding torch 3 is disposed in the narrow gap 2 of the welded object 1.1' in which the narrow gap 2 of type (2) is formed. The welding torch 3 moves along the groove line while welding the narrow gap 2 by a drive mechanism (not shown), and also moves by a torch position control mechanism 12.
This makes it possible to move in the width direction of the narrow groove 2.

溶接トーチ3に、狭開先2の開先線方向に近接させその
移動方向前方に位置して、CCDカメラのような工業用
テレビカメラ4が設けられている。
An industrial television camera 4 such as a CCD camera is provided near the welding torch 3 in the direction of the groove line of the narrow groove 2 and located in front of the welding torch 3 in the direction of movement thereof.

テレビカメラ4は、支持腕5により溶接トーチ3に取付
けられ、狭開先2を接写して、その拡大した画像が得ら
れるようになっている。
A television camera 4 is attached to the welding torch 3 by a support arm 5, and is configured to take a close-up view of the narrow gap 2 and obtain an enlarged image thereof.

テレビカメラ4の左右には、狭開先2をその両側の斜め
上方から照明するための照明器6.6′が、支持腕7.
7′によってテレビカメラ4と一体的に設けられている
。照明器6.6′は、狭開先2の開先内2aと開先肩部
2bとの間に明暗差が生ずるように狭開先2を照明する
On the left and right sides of the television camera 4, illuminators 6.6' for illuminating the narrow gap 2 from diagonally above on both sides are mounted on supporting arms 7.
It is provided integrally with the television camera 4 by 7'. The illuminator 6.6' illuminates the narrow groove 2 so that a difference in brightness is created between the inside 2a of the narrow groove 2 and the groove shoulder 2b.

テレビカメラ4および照明器6.6′は、溶接トーチ3
と共に狭開先2の開先線に沿いまたは開先の幅方向に移
動自在である。
The television camera 4 and the illuminator 6.6' are connected to the welding torch 3.
It is also movable along the groove line of the narrow groove 2 or in the width direction of the groove.

第1図において、8はテレビカメラ4からの画像を処理
するためのA/D変換器、9は画像のメモリ、lOはマ
イクロコンピュータ、11は設定値をマイクロコンピュ
ータ10に人力するための人力機構、12はマイクロコ
ンピュータ10による計算結果を受け、これに基いて溶
接トーチ3の開先幅方向の位置を制御するためのトーチ
位置制御機構、そして、13はモニタテレビである。
In FIG. 1, 8 is an A/D converter for processing images from the television camera 4, 9 is an image memory, 1O is a microcomputer, and 11 is a manual mechanism for manually inputting setting values to the microcomputer 10. , 12 is a torch position control mechanism for receiving calculation results by the microcomputer 10 and controlling the position of the welding torch 3 in the width direction of the groove based on the results, and 13 is a monitor television.

次に、この発明の方法を、第2図に示すブロンク図およ
び第3〜6図に基づいて説明する。先づ、第3図に狭開
先溶接部の平面図で示すように、狭開先2の開先線と直
交する、開先中心PCから一定範囲の領域を処理領域W
と定め、開先中心位置P、および処理領域Wを、電気信
号として、第1図に示す人力機構11からマイクロコン
ピュータ10に入力し、これを記憶せしめる。
Next, the method of the present invention will be explained based on the bronc diagram shown in FIG. 2 and FIGS. 3 to 6. First, as shown in the plan view of the narrow groove welded part in FIG.
The groove center position P and the processing area W are input as electrical signals from the manual mechanism 11 shown in FIG. 1 to the microcomputer 10, and are stored therein.

溶接トーチ3およびテレビカメラ4を、狭開先2の開先
中心に位置せしめた上、狭開先2の開先線に沿って移動
せしめる。そして、溶接トーチ3によって溶接を開始し
、照明器6,6′によって、狭開先2の開先内2aが暗
く、その開先肩部2bが明るくなるように狭開先2を照
明すると共に、この狭開先2をテレビカメラ4によって
撮影し、画像メモリ9に記憶させる。第4図において、
14はこのようにして撮影されそして記憶された画像で
ある。
A welding torch 3 and a television camera 4 are positioned at the center of the narrow groove 2 and moved along the groove line of the narrow groove 2. Then, welding is started with the welding torch 3, and the narrow gap 2 is illuminated with the illuminators 6, 6' so that the inside 2a of the narrow gap 2 is dark and the groove shoulder 2b is bright. , this narrow gap 2 is photographed by a television camera 4 and stored in an image memory 9. In Figure 4,
14 is an image taken and stored in this manner.

次いで、上述のようにして得られた画像14中に、前述
の設定された処理領域Wに相当する領域W′を設定する
。そして、この領域W′を横切る第4図のA −A’線
の上下一定幅の画像信号を縦積分処理し、A−A’線の
平均輝度分布を求める。第5図は、このようにして得ら
れた輝度分布を示すグラフである。第5図の領域W′中
から、開先内の暗部を示す最低輝度位置Pc′を検出す
る。
Next, an area W' corresponding to the previously set processing area W is set in the image 14 obtained as described above. Then, the image signal having a constant width above and below the line A-A' in FIG. 4, which crosses this area W', is subjected to vertical integration processing to obtain the average luminance distribution of the line A-A'. FIG. 5 is a graph showing the luminance distribution obtained in this manner. A lowest brightness position Pc' indicating a dark part within the groove is detected from the area W' in FIG.

次いで、上記により得られた輝度分布を微分処理して輝
度差を抽出する。第6図は微分処理結果を示すグラフで
ある。第6図の領域W′中から、最低輝度位置P、′の
左右における最大微分値PLおよびP、を検出する。最
大微分値PLおよびPヮは、狭開先2における開先肩部
2bの線を示している。
Next, the luminance distribution obtained above is subjected to differential processing to extract the luminance difference. FIG. 6 is a graph showing the results of differential processing. The maximum differential values PL and P on the left and right sides of the lowest luminance position P,' are detected from the area W' in FIG. 6. The maximum differential values PL and Pwa indicate the line of the groove shoulder 2b in the narrow groove 2.

上記により得られた最大微分値PL とPaの和た値P
どは、テレビカメラ4によって撮影された時点での、テ
レビカメラ4に対する開先中心の相対位置を示している
。上記値Pどに対し、絶対基準系における位置への変換
を行ない、これを、マイクロコンピュータIOに記憶さ
せる。このようにして変換されそして記憶された開先中
心位置は、これが記憶された時点でのテレビカメラ4の
溶接進行」二の位置に溶接トーチ3が到達した時点で再
生させる遅延処理が施される。
The sum of the maximum differential value PL obtained above and Pa, P
indicates the relative position of the center of the groove with respect to the television camera 4 at the time when the image was photographed by the television camera 4. The above values P etc. are converted into positions in the absolute reference system and stored in the microcomputer IO. The groove center position converted and stored in this way is subjected to delay processing to be reproduced when the welding torch 3 reaches the second position of the welding progress of the television camera 4 at the time when it is stored. .

遅延処理によって再生された開先中心の絶対位置を示す
値と、トーチ制御機構から得られる溶接トーチの絶対位
置を示す値とを、第1図に示すマイクロコンピュータ1
0によって比較する。そして、両者に差があるときは、
その差をトーチ位置制御機構12に伝達し、トーチ位置
制御機構12によって両者の差が無くなるように、溶接
トーチ3およびテレビカメラ4を、狭開先2の開先幅方
向に移動せしめる。このようにして、溶接トーチ3を、
狭開先2の開先中心P、に位置せしめながら、開先線に
沿って移動させることができる。
The microcomputer 1 shown in FIG.
Compare by 0. And when there is a difference between the two,
The difference is transmitted to the torch position control mechanism 12, and the welding torch 3 and television camera 4 are moved in the groove width direction of the narrow gap 2 so that the difference between the two is eliminated. In this way, the welding torch 3
It can be moved along the groove line while being positioned at the groove center P of the narrow groove 2.

上述したテレビカメラによって撮影され、画像メモリに
記憶された画像14に、処理領域を狭開先2の開先線に
沿って複数設けてもよく、このように複数組設ければ、
開先線上に仮付は部分があっても、適確に倣わせること
ができる。
A plurality of processing areas may be provided along the groove line of the narrow groove 2 in the image 14 taken by the above-mentioned television camera and stored in the image memory, and if a plurality of processing areas are provided in this way,
Even if there is a part of the tack on the groove line, it can be traced accurately.

〔発明の効果〕〔Effect of the invention〕

以上述べたように、この発明によれば、従来のセンサで
は倣いが不可能であったf型の狭開先溶接に当り、溶接
トーチを開先中心位置に迅速適確に倣わせ、これによっ
て、狭開先を自動的に溶接することができる工業上有用
な効果がもたらされる。
As described above, according to the present invention, when performing f-type narrow gap welding, which was impossible to follow with conventional sensors, the welding torch can quickly and accurately follow the groove center position, thereby , an industrially useful effect is brought about in which narrow grooves can be automatically welded.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図はこの発明の一実施態様を示す説明図、第2図は
この発明の倣い工程を示すブロック図、第3図は狭開先
溶接部の平面図、第4図はテレビカメラによって1!A
影された狭開先溶・接部の画像を示す図、第5図は第4
図のA −A’線における輝度分布を示す図、第6図は
その微分処理結果を示す図である。図面において、 1.1’・・・被溶接材、  2・・・狭開先、3・・
・溶接トーチ、    4・・・テレビカメラ、5.7
.7’・・・支持腕、 6.6′・・・照明器、8・・
・A/D変換器、   9・・・メモリ、10・・・コ
ンビエータ、  11・・・入力機構、12・・・トー
チ位置制御機構 13・・・モニタテレビ。
Fig. 1 is an explanatory diagram showing one embodiment of the present invention, Fig. 2 is a block diagram showing the copying process of this invention, Fig. 3 is a plan view of a narrow gap weld, and Fig. 4 is a ! A
Figure 5 shows an image of a shaded narrow gap weld/weld part.
A diagram showing the luminance distribution along the line A-A' in the figure, and FIG. 6 is a diagram showing the result of differential processing. In the drawings, 1.1'...material to be welded, 2...narrow gap, 3...
・Welding torch, 4...TV camera, 5.7
.. 7'...Support arm, 6.6'...Illuminator, 8...
- A/D converter, 9... Memory, 10... Combiator, 11... Input mechanism, 12... Torch position control mechanism 13... Monitor TV.

Claims (1)

【特許請求の範囲】 1 狭開先を溶接するための溶接トーチに、前記狭開先
の開先線方向に近接させて、前記溶接トーチと一体的に
テレビカメラを設け、且つ、前記テレビカメラの左右に
、前記狭開先をその両側の斜め上方から照明するための
照明器を前記テレビカメラと一体的に設け、 前記狭開先の開先線と直交する、開先中心から一定範囲
の領域を処理領域と定め、前記処理領域および開先中心
位置をコンピュータに記憶せしめ、前記溶接トーチおよ
び前記テレビカメラを、前記狭開先の開先中心に位置せ
しめた後、前記溶接トーチおよび前記テレビカメラを前
記狭開先の開先線に沿って移動せしめ、そして、前記溶
接トーチにより溶接を開始し、前記照明器によって、前
記狭開先の開先内と開先肩部との間に明暗差が生ずるよ
うに前記狭開先を照明し、そして、前記テレビカメラに
よって前記狭開先を撮影し、 前記テレビカメラによって撮影された画像中の前記処理
領域に相当する領域の画像信号を積分処理して、前記処
理領域に相当する領域の輝度分布を求め、得られた輝度
分布を微分処理し、その最大微分値に基いて、前記テレ
ビカメラにより撮影された時点における開先中心位置を
算出し、このようにして算出された前記開先中心位置と
、前記テレビカメラでの撮影時における溶接トーチの位
置とを、溶接進行方向における両者の隔たりを補正した
後に、前記コンピュータによって比較し、両者が一致す
るように前記溶接トーチおよび前記テレビカメラを前記
狭開先の開先幅方向に移動せしめ、かくして、前記溶接
トーチの位置を調整することを特徴とする、狭開先溶接
における開先倣い方法。
[Scope of Claims] 1. A welding torch for welding a narrow gap is provided with a television camera integrally with the welding torch in close proximity to the groove line direction of the narrow gap, and the television camera On the left and right sides of the narrow groove, illuminators for illuminating the narrow groove from diagonally above on both sides are provided integrally with the television camera, and a certain range from the center of the groove perpendicular to the groove line of the narrow groove is provided. The area is defined as a processing area, the processing area and the groove center position are stored in a computer, and the welding torch and the television camera are positioned at the groove center of the narrow groove, and then the welding torch and the television The camera is moved along the groove line of the narrow groove, and the welding torch starts welding, and the illuminator is used to illuminate the area between the inside of the groove and the groove shoulder of the narrow groove. illuminating the narrow gap so as to create a difference, photographing the narrow gap with the television camera, and performing integral processing on an image signal of an area corresponding to the processing area in the image photographed by the television camera; Then, calculate the brightness distribution of the area corresponding to the processing area, perform differential processing on the obtained brightness distribution, and calculate the groove center position at the time when the image was photographed by the television camera based on the maximum differential value. The groove center position calculated in this way and the position of the welding torch when photographed by the television camera are compared by the computer after correcting the gap between the two in the welding direction, and the two are compared. A groove tracing method in narrow gap welding, characterized in that the welding torch and the television camera are moved in the groove width direction of the narrow groove so that the welding torch and the television camera match, and thus the position of the welding torch is adjusted. .
JP63254292A 1988-10-08 1988-10-08 Groove copying method in narrow groove welding Expired - Lifetime JPH0632862B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63254292A JPH0632862B2 (en) 1988-10-08 1988-10-08 Groove copying method in narrow groove welding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63254292A JPH0632862B2 (en) 1988-10-08 1988-10-08 Groove copying method in narrow groove welding

Publications (2)

Publication Number Publication Date
JPH02104476A true JPH02104476A (en) 1990-04-17
JPH0632862B2 JPH0632862B2 (en) 1994-05-02

Family

ID=17262943

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63254292A Expired - Lifetime JPH0632862B2 (en) 1988-10-08 1988-10-08 Groove copying method in narrow groove welding

Country Status (1)

Country Link
JP (1) JPH0632862B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090141965A1 (en) * 2007-11-06 2009-06-04 Areva Np Method and Device for Displaying and Monitoring the Profile of a Weld Bead Inside a Groove Provided Between Two Metal Workpieces
JP2010155256A (en) * 2008-12-26 2010-07-15 Toshiba Plant Systems & Services Corp Automatic welding device
JP4755304B1 (en) * 2010-09-22 2011-08-24 株式会社バンダイ Goods sales equipment

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5973183A (en) * 1982-10-18 1984-04-25 Hitachi Zosen Corp Method for controlling copying of weld line
JPS59125272A (en) * 1982-12-29 1984-07-19 Mitsui Eng & Shipbuild Co Ltd Weld line detecting device
JPS62101379A (en) * 1985-10-25 1987-05-11 Hitachi Ltd Weld line profiling detecting device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5973183A (en) * 1982-10-18 1984-04-25 Hitachi Zosen Corp Method for controlling copying of weld line
JPS59125272A (en) * 1982-12-29 1984-07-19 Mitsui Eng & Shipbuild Co Ltd Weld line detecting device
JPS62101379A (en) * 1985-10-25 1987-05-11 Hitachi Ltd Weld line profiling detecting device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090141965A1 (en) * 2007-11-06 2009-06-04 Areva Np Method and Device for Displaying and Monitoring the Profile of a Weld Bead Inside a Groove Provided Between Two Metal Workpieces
US8426769B2 (en) * 2007-11-06 2013-04-23 Areva Np Method and device for displaying and monitoring the profile of a weld bead inside a groove provided between two metal workpieces
JP2010155256A (en) * 2008-12-26 2010-07-15 Toshiba Plant Systems & Services Corp Automatic welding device
JP4755304B1 (en) * 2010-09-22 2011-08-24 株式会社バンダイ Goods sales equipment

Also Published As

Publication number Publication date
JPH0632862B2 (en) 1994-05-02

Similar Documents

Publication Publication Date Title
US5040125A (en) Positional information detecting method in arc welding
JPS6345911B2 (en)
JP2003326362A (en) Automatic beveling copy-welding apparatus and method
JP3241101B2 (en) Automatic welding system and automatic welding method
KR100223981B1 (en) Video positioning apparatus and method for a pouring vessel
JPH02104476A (en) Groove profiling method for narrow groove welding
JP3211681B2 (en) Painting defect inspection equipment
KR920003641Y1 (en) Image processing apparatus for detection of odd product
JPH0468995A (en) Optical axis alignment device for ccd camera
JP2002205166A (en) Display for welding state
JPH0647541A (en) Method for judging status of arc
JPS6149774A (en) Outside surface welding method of weld pipe
JPH06105209B2 (en) Headlight optical axis adjustment method and apparatus
JP2003033874A (en) Automatic-welding-profiling controller
JP3462353B2 (en) Groove tracking control method
JPH06105212B2 (en) Headlight main optical axis inspection method
JPH03161173A (en) Groove profiling control method
JPH01233083A (en) Position correcting device for laser beam machining
JPS57168780A (en) Method and device for detecting error in welding position
JPH0627266Y2 (en) Bevel imaging device
JPH07214322A (en) Method for controlling groove profile in welding member
JPH03118975A (en) Welding equipment
JP2021009052A (en) Inspection device and inspection method
JPH10113770A (en) Device for profile-controlling beveling in electro-gas arc welding and method therefor
JP2003048070A (en) Automatic welding copy control device