JPS58112661A - Arc welding method - Google Patents
Arc welding methodInfo
- Publication number
- JPS58112661A JPS58112661A JP20957981A JP20957981A JPS58112661A JP S58112661 A JPS58112661 A JP S58112661A JP 20957981 A JP20957981 A JP 20957981A JP 20957981 A JP20957981 A JP 20957981A JP S58112661 A JPS58112661 A JP S58112661A
- Authority
- JP
- Japan
- Prior art keywords
- welding
- torch
- current
- arc
- electrode
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/02—Seam welding; Backing means; Inserts
- B23K9/0216—Seam profiling, e.g. weaving, multilayer
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は、溶接電極を開先幅方向に揺動させながら片
寄りビードを形成し、かつ溶接像〜・を行なわせるアー
ク溶接方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an arc welding method in which a biased bead is formed while a welding electrode is oscillated in the width direction of the groove, and welding images are performed.
消耗電極または非消耗電極の如き溶接電極を開先幅方向
に揺動させながら多層盛り溶接を行なうウィービング溶
接方法は知られているが、開先幅がウィービング機構の
限度を超えて広い場合は、第1図に多層盛りビードの断
面図で示す如く、1層目のビ〒ド1を一方の被溶接材3
側の右片寄りに、2層目のビード2を他方の被溶接材3
′側の左片寄りに行なう多層盛溶接を行なう必要がある
。A weaving welding method is known in which multi-layer welding is performed by swinging a welding electrode such as a consumable electrode or a non-consumable electrode in the direction of the groove width, but when the groove width is wider than the limit of the weaving mechanism, As shown in the cross-sectional view of a multilayer bead in Figure 1, the first layer bead 1 is connected to one of the welded materials 3
Place the second layer bead 2 on the right side of the other workpiece 3.
It is necessary to perform multi-layer welding to the left on the '' side.
しかしながら、このような多層盛溶接における溶接電極
の開先倣い技術は、未だ確立されていない。However, a technique for tracing the groove of a welding electrode in such multilayer welding has not yet been established.
この発明は、上述のような観点から、多層盛溶接に必要
な片寄りビードの形成と、溶接線方向の倣い制御とを同
時に行なうことができるアーク溶接方法を提供するもの
で、
定電圧または定電流特性の電源を用いて、溶接電極を開
先幅方向に揺動させながら溶接を行なうアーク溶接方法
において、前記溶接電極の揺動半周期毎に得られる、溶
接電流、アーク電圧またはトーチ高さの移動変位の、い
づれ1つの波形面積の値の差が、常に一定の値となるよ
うに溶接電極を揺動させながら溶接を行ない、多層盛溶
接の基本となる片寄りビードを形成させながら、電極の
揺動中心を常に開先幅方向の所定位置に置きつつ溶接を
行なうことに特徴を有するものである。From the above-mentioned viewpoints, the present invention provides an arc welding method that can simultaneously perform the formation of a biased bead necessary for multilayer welding and the tracing control in the weld line direction. In an arc welding method in which welding is performed while swinging the welding electrode in the width direction of the groove using a power source with current characteristics, welding current, arc voltage, or torch height obtained every half cycle of swinging of the welding electrode. The welding is performed while the welding electrode is oscillated so that the difference in the waveform area of each waveform area of the displacement is always a constant value, and while forming the offset bead that is the basis of multilayer welding, This method is characterized in that welding is performed while the center of swing of the electrode is always placed at a predetermined position in the width direction of the groove.
次に、この発明を、溶接電極として、一定速度で送給さ
れる消耗電極を使用した場合の例により、図面と共に説
明する。第2図はこの発明の原理を示す正面図、第3図
はこの発明に用いられる電流の波形、第4図は同じく電
圧の波形、第5図はトーチ高さの移動変位波形を示す図
である。Next, the present invention will be explained with reference to the drawings, using an example in which a consumable electrode fed at a constant speed is used as a welding electrode. Fig. 2 is a front view showing the principle of this invention, Fig. 3 is a current waveform used in this invention, Fig. 4 is a voltage waveform, and Fig. 5 is a diagram showing a displacement waveform of the torch height. be.
第2図〜第5図において、トーチ4を被溶接材3.3′
の開先幅方向に揺動させた場合、定電圧特性の溶接電源
を用いた溶接においては、消耗電極であるワイヤの送給
速度を一定とすると、第3図に示す如く、アーク電流は
右端部Rで犬となり、左端部りでは右端部Rより小さな
値となる。In Figures 2 to 5, the torch 4 is connected to the workpiece 3.3'
In welding using a welding power source with constant voltage characteristics, if the feeding speed of the wire, which is a consumable electrode, is kept constant, the arc current will be oscillated in the groove width direction as shown in Figure 3. It becomes a dog at the R part, and the value is smaller at the left end R than at the right end R.
またそのときのアーク電圧は、右端部Rで低く、左端部
りでは右端部Rよりも高くなる。更に、前述の電流また
は電圧の変化を0とする如く、トーチ4を被溶接材3の
開先5に倣わせると、トーチ4の高さ方向の変位値Yが
第5図に示す形で表わされる。Further, the arc voltage at that time is lower at the right end R, and higher at the left end than at the right end R. Furthermore, when the torch 4 is made to follow the groove 5 of the workpiece 3 so that the change in the current or voltage described above is 0, the displacement value Y of the torch 4 in the height direction becomes as shown in FIG. expressed.
従って、第3〜第5図に示す半周期毎(C,C)の波形
を積分すると、断面積AおよびBで表わされるので、断
面積AfJ″−Bより犬の一定の関係、即ちA−B=△
凡の関係になる如くトーチ4の揺動を制御してやれば、
トーチ4は片寄りビード1を形成しながら常に開先5内
を溶接線方向に倣わせることができるわけである。Therefore, when the waveforms of each half period (C, C) shown in FIGS. 3 to 5 are integrated, they are expressed by cross-sectional areas A and B, so the cross-sectional area AfJ''-B shows a certain relationship of dog, that is, A- B=△
If you control the swing of the torch 4 so that the relationship is normal,
The torch 4 can always follow the inside of the groove 5 in the direction of the welding line while forming the offset bead 1.
第6図は、前述の第5図に示すトーチ4の高さ方向の変
位値Yを用いてこの発明を実施する場合のブロック図で
、1はこの発明によりもたらされるビード、3,3′は
被溶接材、4はトーチ、5は開先を示す。FIG. 6 is a block diagram when the present invention is implemented using the displacement value Y in the height direction of the torch 4 shown in FIG. The material to be welded, 4 is a torch, and 5 is a groove.
トーチ4は、ワイヤ6が一定速度で送給され、開先幅方
向の駆動モータ(以下X軸モータという)7およびネジ
軸8により開先幅方向に揺動される。A wire 6 is fed to the torch 4 at a constant speed, and the torch 4 is swung in the groove width direction by a groove width direction drive motor (hereinafter referred to as an X-axis motor) 7 and a screw shaft 8 .
更に、前記X軸モータ7およびネジ軸8を支持するX軸
支持ブロック9は、高さ方向(Y軸)の支持ブロック1
0のネジ軸11に支持され、ネジ軸11は高さ方向の駆
動モータ(以下Y・軸モータと℃・う)12により駆動
される。13は前記X軸支持ブロック9がY軸モータ1
2により駆動されるときのY軸方向の変位量を検出する
ポテンショメータである。Further, the X-axis support block 9 that supports the X-axis motor 7 and the screw shaft 8 is connected to the support block 1 in the height direction (Y-axis).
0, and the screw shaft 11 is driven by a height direction drive motor (hereinafter referred to as Y-axis motor) 12. 13, the X-axis support block 9 is connected to the Y-axis motor 1.
This is a potentiometer that detects the amount of displacement in the Y-axis direction when driven by 2.
ワイヤ6が一定の速度で送給されて、アークを出しなが
らトーチ4が開先幅方向に揺動すると、電圧検出器14
によりアーク電圧が検出される。When the wire 6 is fed at a constant speed and the torch 4 swings in the groove width direction while emitting an arc, the voltage detector 14
The arc voltage is detected by
検出されたアーク電圧は、基準電圧発生器15の基準値
と比較器16で比較され、その偏差がOとなる如く、Y
軸モータ制御器17が作用し、Y軸モータ12に制御信
号が送られる。The detected arc voltage is compared with the reference value of the reference voltage generator 15 by the comparator 16, and Y is set such that the deviation is O.
The axis motor controller 17 operates and sends a control signal to the Y-axis motor 12.
従って、トーチ4は一定のアーク電圧を保ちながら、開
先底面形状を倣う。このとき、X軸支持ブロック9は、
高さ方向に移動されるので、第5図の如き波形が検出さ
れ、その変移量がポテンショメータ13により検出され
、切換器18により半周期(C,C)ごとにメモリ付積
分器19 、19’で前述の断面積AおよびBが算出さ
れる。算出された断面積AおよびBは、減算器20でA
−Bが計算され、その値△Soがメモリ21に記憶され
、次のトーチ4の1往復時の△S1と比較器22で比較
される。Therefore, the torch 4 follows the groove bottom shape while maintaining a constant arc voltage. At this time, the X-axis support block 9 is
Since it is moved in the height direction, a waveform as shown in FIG. The above-mentioned cross-sectional areas A and B are calculated. The calculated cross-sectional areas A and B are calculated by a subtracter 20.
-B is calculated, and its value ΔSo is stored in the memory 21 and compared with ΔS1 during the next reciprocation of the torch 4 by the comparator 22.
従って、△Soと△S1・・・△Snが偏差Oであれば
、開先内をトーチ4が常に溶接線に沿って倣っており、
ビード1も図示の片寄りビードが形成されていることに
なる。もし、ΔSoと△S、との間に偏差が生じると、
その偏差信号がX軸モータ制御器23に作用し、トーチ
40反転切換位置が制御される。Therefore, if the deviation between △So and △S1...△Sn is O, the torch 4 always follows the welding line inside the groove.
The bead 1 is also formed with a biased bead as shown. If a deviation occurs between ΔSo and ΔS,
The deviation signal acts on the X-axis motor controller 23, and the reverse switching position of the torch 40 is controlled.
な″お、24はメモリ21に替えて、△Soを基準信号
として与えるための基準値発生器であり、その値は実験
的に予め知ることができる。更に25はX軸モータを一
定速度で制御するための基準信号発生器である。In addition, 24 is a reference value generator for providing ΔSo as a reference signal in place of the memory 21, and its value can be known in advance experimentally.Furthermore, 25 is a reference value generator for supplying ΔSo as a reference signal. It is a reference signal generator for control.
また、この発明において、第4図に示したアーク電圧の
変化を制御に用いる場合は、前述の第6図のアーク電圧
検出器14の出力を切換器18に入力すれば良く、また
第3図に示すアーク電流の変化を制御に用いる場合は、
アーク電流値を公知の検出器で検出し、切換器18に入
力すればよい。In addition, in this invention, when the change in arc voltage shown in FIG. 4 is used for control, the output of the arc voltage detector 14 shown in FIG. When using the change in arc current shown in for control,
The arc current value may be detected by a known detector and input to the switch 18.
前述の方法により、第1図のビード1による溶接が終了
したら、次に、B)A即ちB−A=ΔS。After welding by the bead 1 shown in FIG. 1 is completed by the method described above, next, B) A, that is, B-A=ΔS.
となる如く制御することにより、ビード2の溶接が行な
われる。Welding of the bead 2 is performed by controlling it so that
更にこの発明は、第7図に示すような異形開先の重ね溶
接にも適用できる。Furthermore, the present invention can also be applied to lap welding of irregularly shaped grooves as shown in FIG.
以上説明したように、この発明によれば、トーチの揺動
半周期の値に予め差をもたせて、その差が一定となる如
くトーチの揺動を利用し、もって溶接線方向が制御され
るので、多層溶接に必要な片寄りビードの形成と、溶接
線方向の倣い制御とを同時に行なうことができ、工業上
極めて優れた効果がもたらされる。As explained above, according to the present invention, the direction of the welding line is controlled by providing a difference in the value of the half-cycle of the torch oscillation in advance and using the oscillation of the torch so that the difference remains constant. Therefore, the formation of a biased bead necessary for multilayer welding and the tracing control in the welding line direction can be performed at the same time, resulting in extremely excellent industrial effects.
第1図は多層盛ビードを示す断面図、第2図はこの発明
の原理を示す正面図、第3図はこの発明に用いられる電
流の波形図、第4図は同じく電圧の波形図、第5図はト
ーチ高さ方向変位の波形図、第6図はこの発明の一実施
例を示す制御ブロック図、第7図はこの発明が適用され
る他の溶接継手の例を示す断面図である。
図面において、
1.2・・・片寄りビード、 3,3′・・・被溶接
材、4・・・トーチ、 5・・・開先、6
・・・ワイヤ、 7・・・X軸モータ、8
.11・・・ネジ軸、 9・・・X軸支持ブロ
ック、10・・・X軸支持ブロック、 12・・・
Y軸モータ、13・・・ポテンショメータ 14
・・・アーク電圧検出器、15・・・基準電圧発生器、
16・・・比較器、17・・・Y軸モータ制
御器、 18・・・切換器、19 、19’・・
・メモリ付積分器、 2o・・・減算器、21・・・メ
モリ、 22・・・比較器、23・・・X軸
モータ制御器、 24・・・基準信号発生器、2
5・・・X軸モータ用基準信号発生器。
出願人 日本鋼管株式会社
代理人 堤 敬太部 外1名Fig. 1 is a sectional view showing a multilayer bead, Fig. 2 is a front view showing the principle of the invention, Fig. 3 is a current waveform diagram used in this invention, Fig. 4 is a voltage waveform diagram, and Fig. 4 is a voltage waveform diagram. FIG. 5 is a waveform diagram of displacement in the torch height direction, FIG. 6 is a control block diagram showing an embodiment of the present invention, and FIG. 7 is a sectional view showing another example of a welded joint to which the present invention is applied. . In the drawings, 1.2... Offset bead, 3, 3'... Material to be welded, 4... Torch, 5... Bevel, 6
...Wire, 7...X-axis motor, 8
.. 11... Screw shaft, 9... X-axis support block, 10... X-axis support block, 12...
Y-axis motor, 13...potentiometer 14
... arc voltage detector, 15 ... reference voltage generator,
16... Comparator, 17... Y-axis motor controller, 18... Switching device, 19, 19'...
- Integrator with memory, 2o... Subtractor, 21... Memory, 22... Comparator, 23... X-axis motor controller, 24... Reference signal generator, 2
5...X-axis motor reference signal generator. Applicant Nippon Kokan Co., Ltd. Agent Keitabe Tsutsumi and 1 other person
Claims (1)
を開先幅方向に揺動させながら溶接を行なうアーク溶接
方法において、 前記溶接電極の揺動半周期毎に得られる、溶接電流、ア
ーク電圧またはトーチ高さの移動変位の、いずれか1つ
の波形面積の値の差が、常に一定の値となるように溶接
電極を揺動させながら溶接を行なうことを特徴とするア
ーク溶接方法。[Claims] In an arc welding method in which welding is performed while a welding electrode is oscillated in the groove width direction using a power source with constant voltage or constant current characteristics, every half period of oscillation of the welding electrode Welding is performed while the welding electrode is oscillated so that the difference in the waveform area of any one of the welding current, arc voltage, or torch height displacement obtained during the welding process is always a constant value. Characteristic arc welding method.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20957981A JPS58112661A (en) | 1981-12-26 | 1981-12-26 | Arc welding method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20957981A JPS58112661A (en) | 1981-12-26 | 1981-12-26 | Arc welding method |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS58112661A true JPS58112661A (en) | 1983-07-05 |
Family
ID=16575164
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20957981A Pending JPS58112661A (en) | 1981-12-26 | 1981-12-26 | Arc welding method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58112661A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1986002030A1 (en) * | 1984-10-05 | 1986-04-10 | Fanuc Ltd | System for correcting a path of an automatic welding machine |
JPS63309375A (en) * | 1987-06-08 | 1988-12-16 | Fanuc Ltd | Arc sensor welding method for forming weld bead shape asymmetrically |
JP2011140071A (en) * | 2009-02-25 | 2011-07-21 | Panasonic Corp | Welding method |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5418447A (en) * | 1977-07-12 | 1979-02-10 | Nippon Kokan Kk <Nkk> | Arc welding method |
JPS5426261A (en) * | 1977-08-01 | 1979-02-27 | Nippon Kokan Kk <Nkk> | Arc welding method |
JPS5627347A (en) * | 1979-08-13 | 1981-03-17 | Seisan Nipponsha Kk | Duplex layer film or sheet manufactured by cooextrusion |
-
1981
- 1981-12-26 JP JP20957981A patent/JPS58112661A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5418447A (en) * | 1977-07-12 | 1979-02-10 | Nippon Kokan Kk <Nkk> | Arc welding method |
JPS5426261A (en) * | 1977-08-01 | 1979-02-27 | Nippon Kokan Kk <Nkk> | Arc welding method |
JPS5627347A (en) * | 1979-08-13 | 1981-03-17 | Seisan Nipponsha Kk | Duplex layer film or sheet manufactured by cooextrusion |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1986002030A1 (en) * | 1984-10-05 | 1986-04-10 | Fanuc Ltd | System for correcting a path of an automatic welding machine |
US4785155A (en) * | 1984-10-05 | 1988-11-15 | Fanuc Ltd. | Automatic welding machine path correction system |
JPS63309375A (en) * | 1987-06-08 | 1988-12-16 | Fanuc Ltd | Arc sensor welding method for forming weld bead shape asymmetrically |
JP2011140071A (en) * | 2009-02-25 | 2011-07-21 | Panasonic Corp | Welding method |
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