JPH0359794B2 - - Google Patents
Info
- Publication number
- JPH0359794B2 JPH0359794B2 JP60121151A JP12115185A JPH0359794B2 JP H0359794 B2 JPH0359794 B2 JP H0359794B2 JP 60121151 A JP60121151 A JP 60121151A JP 12115185 A JP12115185 A JP 12115185A JP H0359794 B2 JPH0359794 B2 JP H0359794B2
- Authority
- JP
- Japan
- Prior art keywords
- laser beam
- workpiece
- arc discharge
- welding
- laser
- 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.)
- Expired - Lifetime
Links
- 238000010891 electric arc Methods 0.000 claims description 16
- 238000003754 machining Methods 0.000 claims description 8
- 230000004907 flux Effects 0.000 claims description 7
- 230000003287 optical effect Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 description 31
- 238000010586 diagram Methods 0.000 description 6
- 230000007547 defect Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 230000004886 head movement Effects 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012777 electrically insulating material Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/346—Working by laser beam, e.g. welding, cutting or boring in combination with welding or cutting covered by groups B23K5/00 - B23K25/00, e.g. in combination with resistance welding
- B23K26/348—Working by laser beam, e.g. welding, cutting or boring in combination with welding or cutting covered by groups B23K5/00 - B23K25/00, e.g. in combination with resistance welding in combination with arc heating, e.g. TIG [tungsten inert gas], MIG [metal inert gas] or plasma welding
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明はレーザビーム加工装置、とくにアー
ク放電を付加することによつて高加工能率、高品
質化を図つたレーザビーム加工装置に関するもの
である。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a laser beam processing device, and particularly to a laser beam processing device that achieves high processing efficiency and quality by adding arc discharge. .
従来、この種の装置として第５図及び第６図に
示すものがあつた。第５図は従来のアーク放電を
利用したレーザビーム加工装置を示す縦断面構成
図、第６図はその主要部を示す縦断面図である。
図において、１はレーザ発振器、２はレーザ発振
器１から出射されたレーザビーム、２ａは集光ビ
ーム、３はレーザビーム２を加工部へ導くために
レーザビーム２を折り曲げるベンドミラー、４は
レーザビーム２を加工の目的にあつたエネルギー
密度に集光するための集光光学系である。５は集
光光学系４の下部にもうけられ、集光ビーム２ａ
と同軸で円筒上の電気絶縁材料により構成された
アシストガスノズル、６はアシストガスノズル５
の先端に設けられた集光ビーム２ａと同軸円環状
の電極、７はアシストガス供給口である。また８
は被加工物、９は電極６と被加工物８との間に電
圧を印加するとともにアーク放電を発生させるア
ーク放電電源である。
Conventionally, there have been devices of this type as shown in FIGS. 5 and 6. FIG. 5 is a vertical cross-sectional configuration diagram showing a conventional laser beam machining device using arc discharge, and FIG. 6 is a vertical cross-sectional view showing the main parts thereof.
In the figure, 1 is a laser oscillator, 2 is a laser beam emitted from the laser oscillator 1, 2a is a focused beam, 3 is a bend mirror that bends the laser beam 2 to guide the laser beam 2 to the processing section, 4 is a laser beam This is a condensing optical system that condenses light into an energy density suitable for processing purposes. 5 is provided at the bottom of the condensing optical system 4, and the condensed beam 2a
An assist gas nozzle 6 is made of an electrically insulating material on a cylinder and is coaxial with the assist gas nozzle 5.
7 is an assist gas supply port. 8 again
9 is a workpiece, and 9 is an arc discharge power supply that applies a voltage between the electrode 6 and the workpiece 8 and generates arc discharge.
上記のように構成された従来のレーザビーム加
工装置では、レーザビーム２は、集光光学系４に
より、106〜108W／cm2という高エネルギー密度の
スポツトに集光され、被加工物８の表面に照射さ
れて切断、溶接、熱処理などの加工がおこなわれ
る。一方レーザビーム２が出射すると同時に、電
気絶縁材料により構成されたアシストガスノズル
５の先端に設けられた集光ビーム２ａと同軸円環
状の電極６と被加工物８との間にアーク放電電源
９により電圧が印加される。このためガス供給口
６から導入されたアシストガスの作用とあいまつ
て、電極６と被加工物８の間にアークが発生す
る。アシストガスは、このアークにより高温に加
熱され、アシストガスの一部は解離して集光ビー
ム２ａを取り巻く形で高温のガスプラズマ１０と
なり、被加工物８の表面に集光ビーム２ａと同時
に噴射される。このようにアークを利用したレー
ザビーム加工装置は、高エネルギー密度の集光レ
ーザビーム２ａと、集光レーザビーム２ａ取り巻
くように形成された高温ガスプラズマ１０とを被
加工物８に同時に照射するように構成してあるの
で、切断・溶接・熱処理の加工効率が上昇する。
特に溶接においてはギヤツプ裕度などが大幅に向
上している。第７図はこのようなアーク放電を利
用したレーザビーム加工装置をさらに改良した装
置を示す要部縦断面図であり、電極６の消耗を防
止するために、電極６が設けられたアシストガス
ノズルの外側にシールドノズル１１を設けるな
ど、装置の高信頼化が図られ、実用化されてい
る。なお７ａはシールドガスの供給パイプであ
る。 In the conventional laser beam processing device configured as described above, the laser beam 2 is focused by the focusing optical system 4 onto a spot with a high energy density of 10 6 to 10 8 W/cm 2 , and is focused on the workpiece. The surface of 8 is irradiated to perform processing such as cutting, welding, and heat treatment. On the other hand, at the same time as the laser beam 2 is emitted, an arc discharge power source 9 is connected between the focused beam 2a provided at the tip of the assist gas nozzle 5 made of an electrically insulating material, the coaxial annular electrode 6, and the workpiece 8. A voltage is applied. Therefore, together with the action of the assist gas introduced from the gas supply port 6, an arc is generated between the electrode 6 and the workpiece 8. The assist gas is heated to a high temperature by this arc, and a portion of the assist gas dissociates to become a high-temperature gas plasma 10 surrounding the focused beam 2a, which is injected onto the surface of the workpiece 8 at the same time as the focused beam 2a. be done. In this way, the laser beam processing device using an arc simultaneously irradiates the workpiece 8 with the focused laser beam 2a having high energy density and the high temperature gas plasma 10 formed around the focused laser beam 2a. The processing efficiency of cutting, welding, and heat treatment increases.
Especially in welding, gap tolerance etc. have been significantly improved. FIG. 7 is a longitudinal cross-sectional view of a main part showing a further improved laser beam machining device using such an arc discharge. The reliability of the device has been improved by providing a shield nozzle 11 on the outside, and the device has been put into practical use. Note that 7a is a shield gas supply pipe.
一方、鉄などの磁性材料に電流が流れると、そ
の電流の周囲に磁界が発生する。そしてこの材料
にギヤツプがあると、このギヤツプ部から磁束が
漏洩する。被加工物８とアーク溶接トーチ１５に
設けた電極６との間に大電流のアーク放電を発生
させて行うアーク溶接では、この原理を応用した
第８図に示すような溶接線倣いアーク溶接装置が
考案されている。被加工物８に流れる電流により
加工線をなすギヤツプ部１９からは磁束が漏洩す
る。そこで、洩れ磁気センサ１２をギヤツプ部１
９に直交する方向、即ち、Ｙ方向にセンサ駆動部
１３により移動させつつこの洩れ磁束が最大とな
る位置をセンサ信号処理回路１４および位置読取
器１６で検出し、これを制御装置即ち、自動倣い
プロセツサ１７に取り込み、溶接トーチ１５と洩
れ磁気センサ１２との距離差を演算処理し溶接ト
ーチ１５の位置制御を行い、溶接トーチブロツク
１８により溶接線倣いを行つている。 On the other hand, when a current flows through a magnetic material such as iron, a magnetic field is generated around the current. If there is a gap in this material, magnetic flux will leak from this gap. In arc welding, which is performed by generating a large current arc discharge between the workpiece 8 and the electrode 6 provided on the arc welding torch 15, a welding line tracing arc welding device as shown in Fig. 8 which applies this principle is used. has been devised. Due to the current flowing through the workpiece 8, magnetic flux leaks from the gap portion 19 forming the processed wire. Therefore, the leakage magnetic sensor 12 is connected to the gap part 1.
9, that is, in the Y direction, the sensor signal processing circuit 14 and the position reader 16 detect the position where the leakage magnetic flux is maximum, and this is detected by the control device, that is, the automatic copying The data is input into the processor 17, and the distance difference between the welding torch 15 and the leakage magnetic sensor 12 is processed, the position of the welding torch 15 is controlled, and the welding line is traced by the welding torch block 18.
レーザ溶接は、狭幅な深い溶け込みの溶接がで
きるが、そのような溶接を行うためには、溶接線
とビーム照射位置とを高精度で位置合せすること
が必要である。アーク付加によつて加工能率が向
上するとともに位置合わせに対する裕度はかなり
広くなつた。しかし、薄板などの溶接において
は、被溶接物の前加工精度もあまりよくなく、ま
た、溶接中に変形もおこるため、目はずれや融合
不良など溶接不良が多く発生しており、自動化を
大きく阻害している。
Laser welding allows welding with narrow width and deep penetration, but in order to perform such welding, it is necessary to align the weld line and the beam irradiation position with high precision. By adding an arc, machining efficiency improved and the margin for positioning became considerably wider. However, when welding thin plates, etc., the pre-processing accuracy of the workpiece is not very good, and deformation occurs during welding, resulting in many welding defects such as misalignment and poor fusion, which greatly hinders automation. are doing.
この発明は、上記のような問題点を解消するた
めになされたもので、レーザ溶接の高品質、高信
頼化を図るとともに、複雑な形状の被溶接物に対
しても簡単に適用できる溶接線自動倣い機能を備
えたレーザビーム加工装置を得ることを目的とす
る。 This invention was made to solve the above-mentioned problems, and aims to improve the quality and reliability of laser welding, as well as to create a welding line that can be easily applied to objects with complex shapes. The purpose of this invention is to obtain a laser beam processing device with an automatic tracing function.
この発明に係るレーザビーム加工装置な、レー
ザビームを集光する光学系、レーザビームと同軸
に設けられたアシストガスノズル、このアシスト
ガスノズルの先端に上記レーザビームと同軸に設
けられた電極、この電極と被加工物間に電圧を印
加させるとともにアーク放電を発生させるアーク
放電電源、上記アーク放電による放電電流によ
り、上記被加工物の加工線をなすギヤツプ部に生
じる洩れ磁束を検出する磁気センサ、この磁気セ
ンサの駆動部、上記磁気センサで検出される信号
を処理して上記加工線の位置を求めるセンサ信号
処理手段、及びこのセンサ信号処理手段で得られ
た上記加工線の位置信号に基づいて、上記レーザ
ヘツドの位置制御を行うレーザヘツド駆動部を備
え、上記加工線を自動倣いするようにしたもので
ある。
The laser beam processing device according to the present invention includes an optical system for focusing the laser beam, an assist gas nozzle provided coaxially with the laser beam, an electrode provided coaxially with the laser beam at the tip of the assist gas nozzle, and the electrode and the assist gas nozzle provided coaxially with the laser beam. An arc discharge power supply that applies a voltage between the workpieces and generates an arc discharge, a magnetic sensor that detects leakage magnetic flux generated in the gap part of the machining line of the workpiece due to the discharge current caused by the arc discharge, and this magnetic sensor. A sensor driving unit, a sensor signal processing means for processing the signal detected by the magnetic sensor to determine the position of the processed line, and a position signal of the processed line obtained by the sensor signal processing means, the above-mentioned The machine is equipped with a laser head drive section that controls the position of the laser head, and is configured to automatically trace the processing line.
この発明におけるレーザビーム加工装置は、ア
ーク放電電流によつて発生するギヤツプ部での洩
れ磁束を検出することにより自動的に加工線を特
定し、レーザ溶接の進行方向を制御するようにし
たことによつて、常に加工線とビーム照射位置と
整合が図られ、目はずれなど溶接欠陥のない高品
質な溶接が、完全自動で行なえる。
The laser beam processing device of this invention automatically identifies the processing line by detecting the leakage magnetic flux at the gap portion generated by the arc discharge current, and controls the direction of laser welding. Therefore, the processing line and the beam irradiation position are always aligned, and high-quality welding without welding defects such as misalignment can be performed completely automatically.
第１図はこの発明の一実施例によるレーザビー
ム加工装置は示す縦断面構成図、第２図はその主
要部を一部切欠いて内部を示す斜視図である。図
において、１２はアーク放電による放電電流によ
り、被加工物８の加工線１９をなすギヤツプ部に
生じる洩れ磁束を検出する磁気センサ、１３はこ
の磁気センサをスキヤンするための駆動部、２０
はこれら磁気センサ１２及び駆動部１３よりなる
センサ格納部をレーザビームを中心軸に回転運動
させる駆動部である。
FIG. 1 is a vertical cross-sectional configuration diagram showing a laser beam processing apparatus according to an embodiment of the present invention, and FIG. 2 is a perspective view showing the inside with a part of the main part thereof cut away. In the figure, 12 is a magnetic sensor that detects the leakage magnetic flux generated in the gap part forming the machining line 19 of the workpiece 8 due to discharge current caused by arc discharge, 13 is a drive unit for scanning this magnetic sensor, and 20
is a drive unit that rotates the sensor storage unit made up of the magnetic sensor 12 and the drive unit 13 about the laser beam as a central axis.
第３図はこの発明の一実施例によるレーザビー
ム加工装置を示すブロツク図、第４図はその動作
を示すフローチヤートである。 FIG. 3 is a block diagram showing a laser beam processing apparatus according to an embodiment of the present invention, and FIG. 4 is a flowchart showing its operation.
電極６を介して、被溶接物８の厚さ方向の電流
が流れると、被加工物８内に磁気ループが作られ
る。被溶接物８が鋼材のような場合、加工線間の
空気との比磁率の違いによつて、加工線１９上の
洩れ磁気が誘起される。磁気センサ１２は、２個
の磁気検出素子により構成されている。この２個
の磁気センサ１２からの出力は、比較器２１で比
較され、２個のセンサ１２の出力信号が等しくな
るまで、センサ移動用モータの駆動回路２２、セ
ンサ移動用モータ２３、センサ移動用治具等より
なる駆動部１３，２０により磁気センサ１２をス
キヤンする。そして、その位置をリニヤポテンシ
ヨンメータ２５で読み取り、Ａ／Ｄ変換器２６に
よりデイジタル信号に変換してこの出力信号を入
力回路２７、CPU２８、メモリ２９、及び出力
回路３０により処理して加工線の位置を求める。
この位置信号に基づいてレーザヘツドを、ヘツド
移動用モータの駆動回路３１、ヘツド移動用モー
タ、及びヘツド移動用治具３３よりなるレーザヘ
ツド駆動部３４により位置制御する。 When a current flows through the electrode 6 in the thickness direction of the workpiece 8, a magnetic loop is created within the workpiece 8. When the object to be welded 8 is made of steel, leakage magnetism on the processed wire 19 is induced due to the difference in relative magnetic coefficient between the processed wire and the air. The magnetic sensor 12 is composed of two magnetic detection elements. The outputs from these two magnetic sensors 12 are compared by a comparator 21, and until the output signals of the two sensors 12 become equal, the sensor moving motor drive circuit 22, the sensor moving motor 23, the sensor moving motor The magnetic sensor 12 is scanned by drive units 13 and 20 made up of jigs and the like. Then, the position is read by the linear potentiometer 25, converted into a digital signal by the A/D converter 26, and this output signal is processed by the input circuit 27, CPU 28, memory 29, and output circuit 30, and the processed wire is processed. Find the location.
Based on this position signal, the position of the laser head is controlled by a laser head drive section 34 comprising a drive circuit 31 for a head movement motor, a head movement motor, and a head movement jig 33.
駆動部１３，２０は複雑な形状に追従できるよ
うに、センサ格納部全体が、レーザヘツドを中心
軸として回転駆動するようになつており、例え
ば、円形状の溶接をも完全自動で行なえるように
なつている。 The drive units 13 and 20 are designed to rotate the entire sensor storage unit around the laser head as a central axis so that it can follow complex shapes.For example, it is possible to completely automatically weld circular shapes. It's summery.
第４図は、溶接加工線検出の手順を示すフロー
チヤートであり、検出が開始されるとまずセンサ
格納部が回転し（ステツプ（34））、大まかな溶接
加工線検出が行なわれる。そして信号が検出され
ると（ステツプ（35））、磁気センサをスキヤンニ
ングし（ステツプ（36））、２つの磁気センサ信号
が等しくなる点をエンコーダにより検出する（ス
テツプ（36））。そして溶接加工線の計算を行い
（ステツプ（38））、レーザヘツドを駆動する（ス
テツプ（39））。曲線が急激な変化した場合は再び
センサ回転から始める。このようにして、常に溶
接加工線とビーム照射位置との整合が図られ、目
はずれなどの溶接欠陥のない高品質な溶接が完全
自動で行なえる。 FIG. 4 is a flowchart showing the procedure for detecting a welding line. When detection is started, the sensor storage section first rotates (step (34)), and a rough welding line is detected. When the signal is detected (step (35)), the magnetic sensor is scanned (step (36)), and the encoder detects the point where the two magnetic sensor signals are equal (step (36)). Then, the welding line is calculated (step (38)), and the laser head is driven (step (39)). If the curve suddenly changes, start rotating the sensor again. In this way, the welding line and the beam irradiation position are always aligned, and high-quality welding without welding defects such as misalignment can be performed completely automatically.
なお、上記実施例ではセンサ駆動部を駆動部１
３と駆動部２０の２段階としたが駆動部１３の機
能を駆動部２０に含ませてもよい。 Note that in the above embodiment, the sensor drive section is the drive section 1.
3 and the drive unit 20, the function of the drive unit 13 may be included in the drive unit 20.
以上のように、この発明によれば、高温ガスプ
ラズマを併用したレーザ溶接に対し、溶接線自動
倣い機能を付加する構成をしたので、精度の高い
加工及び、完全自動化が実施できる。
As described above, according to the present invention, an automatic welding line tracing function is added to laser welding using high-temperature gas plasma, so highly accurate processing and complete automation can be performed.
第１図はこの発明の一実施例によるレーザビー
ム加工装置を示す縦断面構成図、第２図はその主
要部の一部切欠いて内部を示す斜視図、第３図は
この発明の一実施例によるレーザビーム加工装置
を示すブロツク図、第４図はその動作を示すフロ
ーチヤート、第５図は従来のレーザビーム加工装
置を示す縦断面構成図、第６図はその主要部を示
す縦断面図、第７図は改良された従来のレーザビ
ーム加工装置の主要部を示す縦断面図、及び第８
図は従来の自動倣いアーク溶接装置を示すブロツ
ク構成図である。
図において、２はレーザビーム、４は集光光学
系、５はアシストガスノズル、６は電極、８は被
加工物、９はアーク放電電源、１２は磁気セン
サ、１３，２０はセンサ駆動部、２１は比較器、
２５はリニアポテンシヨメータ、２８はCPU、
２９はメモリ、３４はレーザヘツド駆動部であ
る。なお、図中、同一符号は同一又は相当部分を
示す。
FIG. 1 is a longitudinal cross-sectional configuration diagram showing a laser beam processing device according to an embodiment of the present invention, FIG. 2 is a partially cutaway perspective view of the main part of the device, and FIG. 3 is an embodiment of the present invention. FIG. 4 is a flowchart showing its operation, FIG. 5 is a vertical cross-sectional configuration diagram showing a conventional laser beam processing device, and FIG. 6 is a vertical cross-sectional view showing its main parts. , FIG. 7 is a vertical sectional view showing the main parts of an improved conventional laser beam processing device, and FIG.
The figure is a block diagram showing a conventional automatic tracing arc welding device. In the figure, 2 is a laser beam, 4 is a focusing optical system, 5 is an assist gas nozzle, 6 is an electrode, 8 is a workpiece, 9 is an arc discharge power source, 12 is a magnetic sensor, 13 and 20 are sensor drive units, and 21 is a comparator,
25 is a linear potentiometer, 28 is a CPU,
29 is a memory, and 34 is a laser head drive section. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.
Claims (1)
のレーザビームを用いて、被加工物の加工を行う
レーザビーム加工装置において、上記レーザビー
ムを集光する光学系、上記レーザビームと同軸に
設けられたアシストガスノズル、このアシストガ
スノズルの先端に上記レーザビームと同軸に設け
られた電極、この電極と上記被加工物間に電圧を
印加させるとともにアーク放電を発生させるアー
ク放電電源、上記アーク放電による放電電流によ
り、上記被加工物の加工線をなすギヤツプ部に生
じる洩れ磁束を検出する磁気センサ、この磁気セ
ンサの駆動部、上記磁気センサで検出される信号
を処理して上記加工線の位置を求めるセンサ信号
処理手段、及びこのセンサ信号処理手段で得られ
た上記加工線の位置信号に基づいて上記レーザヘ
ツドの位置制御を行うレーザヘツド駆動部を備
え、上記加工線を自動倣いすることを特徴とする
レーザビーム加工装置。1. A laser beam processing device that processes a workpiece using a high-energy-density laser beam emitted from a laser head, an optical system that focuses the laser beam, an assist gas nozzle provided coaxially with the laser beam, An electrode is provided at the tip of the assist gas nozzle coaxially with the laser beam, an arc discharge power source applies a voltage between the electrode and the workpiece, and generates an arc discharge, and a discharge current generated by the arc discharge is used to generate the workpiece. a magnetic sensor for detecting leakage magnetic flux generated in a gap forming a processing line of a workpiece; a drive unit for the magnetic sensor; a sensor signal processing means for processing signals detected by the magnetic sensor to determine the position of the processing line; A laser beam machining device comprising: a laser head driving section that controls the position of the laser head based on a position signal of the machining line obtained by the sensor signal processing means, and automatically tracing the machining line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60121151A JPS61279390A (en) | 1985-06-04 | 1985-06-04 | Laser beam machining equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60121151A JPS61279390A (en) | 1985-06-04 | 1985-06-04 | Laser beam machining equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61279390A JPS61279390A (en) | 1986-12-10 |
| JPH0359794B2 true JPH0359794B2 (en) | 1991-09-11 |
Family
ID=14804107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60121151A Granted JPS61279390A (en) | 1985-06-04 | 1985-06-04 | Laser beam machining equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61279390A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT410067B (en) * | 2000-11-16 | 2003-01-27 | Fronius Schweissmasch Prod | DEVICE FOR A LASER HYBRID WELDING PROCESS |
-
1985
- 1985-06-04 JP JP60121151A patent/JPS61279390A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61279390A (en) | 1986-12-10 |
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