JP2011067845A5 - - Google Patents
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- JP2011067845A5 JP2011067845A5 JP2009221864A JP2009221864A JP2011067845A5 JP 2011067845 A5 JP2011067845 A5 JP 2011067845A5 JP 2009221864 A JP2009221864 A JP 2009221864A JP 2009221864 A JP2009221864 A JP 2009221864A JP 2011067845 A5 JP2011067845 A5 JP 2011067845A5
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- keyhole
- circuit
- voltage
- welding
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同図（ａ）は電圧検出信号Ｖｄの時間変化を示し、（ｂ）は電圧絶対値信号Ｖａの時間変化を示し、（ｃ）は成形電圧信号Ｖｆの時間変化を示し、（ｄ）キーホール形成開始信号Ｃｍ１の時間変化を示し、（ｅ）はキーホール貫通信号Ｃｍ２の時間変化を示し、（ｆ）は溶接トーチ１１の被溶接物Ｗの面内方向に沿う溶接速度Ｖｐの時間変化を示す。 The same figure (a) shows the time change of voltage detection signal Vd, (b) shows the time change of voltage absolute value signal Va, (c) shows the time change of shaping voltage signal Vf, (d) keyhole The time change of formation start signal Cm1 is shown, (e) shows the time change of keyhole penetration signal Cm2, and (f) the time change of welding speed Vp along the in-plane direction of the object to be welded W of welding torch 11 Show.
具体例として同図に示す、アーク電流Ｉｗの電流値が２００Ａ、プラズマガスＰＧがＡｒ、プラズマガスＰＧの流量が２．０Ｌ／ｍｉｎ、被溶接物Ｗがアルミニウム、被溶接物Ｗの厚さが６ｍｍである場合について述べる。この場合にキーホール形成時間ΔＴがたとえば１３ｓｅｃであれば、演算回路ＯＣは、溶接条件データベースＤＢ１により、最適な溶接速度Ｖｐは、２５ｃｍ／ｍｉｎであると算出する。同様に、キーホール形成時間ΔＴがたとえば２０ｓｅｃであれば、演算回路ＯＣは、最適な溶接速度Ｖｐは、２０ｃｍ／ｍｉｎであると算出する。 As shown in the figure as a specific example, the current value of the arc current Iw is 200 A, the plasma gas PG is Ar, the flow rate of the plasma gas PG is 2.0 L / min, the workpiece W is aluminum, the thickness of the workpiece W is The case of 6 mm will be described. If this case keyhole formation time ΔT for example a 13sec, the arithmetic circuit OC is the welding condition data base DB1, optimum welding speed Vp is calculated to be 25 cm / min. Similarly, if the keyhole formation time ΔT is, for example, 20 seconds, the arithmetic circuit OC calculates that the optimum welding speed Vp is 20 cm / min.
具体例として図７に示す、初期電流値ｉｗ１の値が２００Ａ、プラズマガスＰＧがＡｒ、プラズマガスＰＧの流量が２．０Ｌ／ｍｉｎ、被溶接物Ｗがアルミニウム、被溶接物Ｗの厚さが６ｍｍ、溶接速度Ｖｐが２５ｃｍ／ｍｉｎである場合について述べる。この場合にキーホール形成時間ΔＴがたとえば１３ｓｅｃであれば、演算回路ＯＣは、溶接条件データベースＤＢ２により、最適な定常電流値ｉｗ２は、２００Ａであると算出する。同様に、キーホール形成時間ΔＴがたとえば１７ｓｅｃであれば、演算回路ＯＣは、最適な定常電流値ｉｗ２は、２２０Ａであると算出する。 As shown in FIG. 7 as a specific example, the value of the initial current value iw1 is 200 A, the plasma gas PG is Ar, the flow rate of the plasma gas PG is 2.0 L / min, the workpiece W is aluminum, the thickness of the workpiece W is The case where the welding speed Vp is 25 cm / min will be described. If keyhole forming time ΔT in this case for example 13Sec, arithmetic circuit OC is the welding condition data base DB2, the optimal steady-state current value iw2 is calculated to be 200A. Similarly, if the keyhole formation time ΔT is, for example, 17 seconds, the arithmetic circuit OC calculates that the optimal steady state current value iw2 is 220A.
Ａ１，Ａ２，Ａ３，Ａ４ プラズマキーホール溶接装置
１１ 溶接トーチ
１１１ ノズル
１１２ プラズマ電極
１２ マニピュレータ
２ 溶接電源
２１ 出力制御回路（電流制御手段）
２２ アーク電圧検出回路（アーク電圧検出手段）
２３ 時間計測回路（時間計測手段）
２３１ 絶対値演算回路
２３２ ローパスフィルタ
２３３ 電圧変動検出回路（電圧変動検出手段）
２３４ キーホール形成時間算出回路
３ ロボット制御装置
３１ 動作制御回路（動作制御手段）
ＢＶ 微分回路
Ｂｖ 電圧微分信号
Ｂｔｈ１ （第１の）基準値
Ｂｔｈ２ （第２の）基準値
ＣＭ１ 比較回路
Ｃｍ１ キーホール形成開始信号
ＣＭ２ 比較回路（キーホール貫通判断手段）
Ｃｍ２ キーホール貫通信号
ＤＢ１，ＤＢ２ 溶接条件データベース
Ｉｗ アーク電流
Ｉｓ 電流設定信号
ｉｗ１ 初期電流値
ｉｗ２ 定常電流値
ｉｓ 電流信号
ＫＨ キーホール
ＫＴ キーホール形成時間信号
Ｍｃ 動作制御信号
Ｏｎ 出力開始信号
ＯＣ 演算回路（演算手段）
ＰＡ プラズマアーク
ＰＧ プラズマガス
Ｓｔ トーチ移動開始信号
ＴＰ ティーチペンダント
Ｖｐ 溶接速度（定常速度）
ＶＳ キーホール形成開始基準電圧設定回路
Ｖｓ キーホール形成開始基準電圧信号
Ｖｗ アーク電圧
Ｖａ 電圧絶対値信号
Ｖｄ 電圧検出信号
Ｖｆ 成形電圧信号
ｖｐ 速度信号
Ｗ 被溶接物
ΔＴ キーホール形成時間
A1, A2, A3, A4 plasma keyhole welding apparatus 11 welding torch 111 nozzle 112 plasma electrode 12 manipulator 2 welding power source 21 output control circuit (current control means)
22 Arc voltage detection circuit (arc voltage detection means)
23 time measuring circuit (time measuring means)
231 Absolute value calculation circuit 232 Low pass filter 233 Voltage fluctuation detection circuit (voltage fluctuation detection means)
234 Keyhole formation time calculation circuit 3 Robot control device 31 Operation control circuit (operation control means)
BV differentiation circuit Bv voltage differentiation signal Bth1 (first) reference value Bth2 (second) reference value CM1 comparison circuit Cm1 keyhole formation start signal CM2 comparison circuit (keyhole penetration judging means)
Cm2 Keyhole penetration signal DB1, DB2 Welding condition database Iw Arc current Is Current setting signal iw1 Initial current value iw2 Steady current value is Current signal KH Keyhole KT Keyhole formation time signal Mc Operation control signal On Output start signal OC Calculation circuit ( Calculation means)
PA plasma arc PG plasma gas St torch movement start signal TP teach pendant Vp welding speed (steady speed)
VS Keyhole formation start reference voltage setting circuit Vs keyhole formation start reference voltage signal Vw Arc voltage Va Voltage absolute value signal Vd Voltage detection signal Vf Forming voltage signal vp Speed signal W Weldment ΔT Keyhole formation time
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009221864A JP5475381B2 (en) | 2009-09-28 | 2009-09-28 | Plasma keyhole welding apparatus and plasma keyhole welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009221864A JP5475381B2 (en) | 2009-09-28 | 2009-09-28 | Plasma keyhole welding apparatus and plasma keyhole welding method |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2011067845A JP2011067845A (en) | 2011-04-07 |
| JP2011067845A5 true JP2011067845A5 (en) | 2012-09-13 |
| JP5475381B2 JP5475381B2 (en) | 2014-04-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2009221864A Active JP5475381B2 (en) | 2009-09-28 | 2009-09-28 | Plasma keyhole welding apparatus and plasma keyhole welding method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP5475381B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103028827B (en) * | 2011-09-29 | 2016-03-16 | 株式会社大亨 | Keyhole plasma arc welding system and keyhole plasma arc welding method |
| JP5937323B2 (en) * | 2011-09-29 | 2016-06-22 | 株式会社ダイヘン | Plasma keyhole welding method and plasma keyhole welding system |
| JP6356990B2 (en) * | 2014-02-05 | 2018-07-11 | 株式会社ダイヘン | Industrial product manufacturing method, spot welding system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5858975A (en) * | 1981-10-02 | 1983-04-07 | Mitsubishi Heavy Ind Ltd | Starting method for plasma keyhole welding |
| JPH02182379A (en) * | 1989-01-06 | 1990-07-17 | Hitachi Ltd | Plasma automatic welding equipment |
| JPH07266055A (en) * | 1994-03-30 | 1995-10-17 | Komatsu Ltd | Plasma arc welding method |
| JP2003088958A (en) * | 2001-09-18 | 2003-03-25 | Daihen Corp | Output control method for ac pulsed arc welding |
| JP4875390B2 (en) * | 2006-03-27 | 2012-02-15 | 株式会社ダイヘン | Constriction detection control method for consumable electrode arc welding |
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2009
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