JPH02147185A - Laser beam machining method and machine - Google Patents
Laser beam machining method and machineInfo
- Publication number
- JPH02147185A JPH02147185A JP63300514A JP30051488A JPH02147185A JP H02147185 A JPH02147185 A JP H02147185A JP 63300514 A JP63300514 A JP 63300514A JP 30051488 A JP30051488 A JP 30051488A JP H02147185 A JPH02147185 A JP H02147185A
- Authority
- JP
- Japan
- Prior art keywords
- laser beam
- welding
- laser
- hollow
- arc
- 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
- 238000003754 machining Methods 0.000 title abstract 3
- 238000000034 method Methods 0.000 title description 5
- 238000003466 welding Methods 0.000 claims abstract description 25
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 11
- 229910052721 tungsten Inorganic materials 0.000 claims description 11
- 239000010937 tungsten Substances 0.000 claims description 11
- 230000031700 light absorption Effects 0.000 claims description 6
- 238000003672 processing method Methods 0.000 claims description 4
- 230000001678 irradiating effect Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 6
- 238000005520 cutting process Methods 0.000 abstract description 4
- 238000002844 melting Methods 0.000 abstract description 4
- 230000008018 melting Effects 0.000 abstract description 4
- 238000010521 absorption reaction Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 229910000838 Al alloy Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000002203 pretreatment Methods 0.000 description 2
- 238000003698 laser cutting Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 238000004381 surface treatment Methods 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
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はレーザ加工技術に係り、特にアルミ合金等のレ
ーザ光の反射率の大きな材料なレーザにより切断、・溶
接等を行なうのに好適なレーザ加工方法及び装置に関す
るものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to laser processing technology, and is particularly suitable for cutting, welding, etc. with a laser on materials with a high reflectance of laser light, such as aluminum alloys. The present invention relates to a laser processing method and apparatus.
従来のレーザ加工方法は、反射率の大きな材料を切断す
る場合には、ワーク２面に表面処理を行ない、レーザの
吸収率を高める方法が採用されていた。なお、この種の
！！ｌとして関連するものには例えば特開和６２−２１
２０８７号が挙げられる。In the conventional laser processing method, when cutting a material with a high reflectance, a method was adopted in which two surfaces of the workpiece were subjected to surface treatment to increase the laser absorption rate. In addition, this kind of! ! For example, Japanese Patent Application Laid-open No. 62-21
No. 2087 is mentioned.
上記従来技術はレーザ加工の実用化の面で配慮がされて
おらず、材料全体の表面の前処理が必要となり、このよ
うな前処理がコストアップの原因になり、実用化の面で
不具合があった。The above conventional technology does not take into account the practical application of laser processing, and requires pre-treatment of the entire surface of the material. Such pre-treatment increases costs and causes problems in practical application. there were.
本発明の目的は、このような旧処理を不要とし、アルミ
合金等の光吸収率の悪い材料を効率的に加工することが
できるレーザ加工方法及び装置を提供することにある。An object of the present invention is to provide a laser processing method and apparatus that can eliminate the need for such old processing and efficiently process materials with poor light absorption such as aluminum alloys.
上記目的は、ティグ溶接によりワークを加熱させ、金属
表面温度を上昇させることでワーク表面のレーザ光吸収
率を高めることを利用し、レーザ加工機を併用したティ
グ溶接によりレーザビームのすく゛近傍を加熱し、レー
ザ光を照射させることにより、達成される。The above purpose uses TIG welding to heat the workpiece and increase the metal surface temperature, thereby increasing the laser light absorption rate on the workpiece surface. TIG welding using a laser processing machine also heats the vicinity of the laser beam. This is achieved by irradiating laser light.
中空タングステンｘｉを持つティグ溶接のトーチ部とレ
ーザ加工機のレーザ先端部は一対に組み込まれ、レーザ
ビームはタングステン電極の中空部から照射される。従
って、ティグ溶接の中空タングステン電極の周囲部とワ
ークとの間にアークを発生し、ワーク表面を溶融もしく
は溶融寸前まで加熱する。レーザビームは前記中空タン
グステン電極のアークによりスポット的に加熱されたワ
ーク表面の中央部に照射されるため、レーザ光吸収率が
高くなったワークを効率良く切断し、溶接等のレーザ加
工が行なえる。A TIG welding torch section having a hollow tungsten xi and a laser tip section of a laser processing machine are assembled as a pair, and the laser beam is irradiated from the hollow section of the tungsten electrode. Therefore, an arc is generated between the circumference of the hollow tungsten electrode for TIG welding and the workpiece, and the surface of the workpiece is heated to melt or almost melt. Since the laser beam is irradiated onto the center of the workpiece surface that is spot-heated by the arc of the hollow tungsten electrode, workpieces with high laser light absorption can be efficiently cut and laser processing such as welding can be performed. .
〔実 施 例〕
以下、本発明の一実施例を第１図、第２図により説明す
る。第１図は本発明の概略説明図、第２図はレーザ光の
吸収率の特性図を示す。[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. FIG. 1 is a schematic explanatory diagram of the present invention, and FIG. 2 is a characteristic diagram of the absorption rate of laser light.
第２図において、横軸を温度、縦軸なレーザ光吸収率と
するとＣＯ２レーザ５（波長１０．６μＷＬ）は、常温
では非常に吸収率（チ）は低く、アルミ合金での反射率
は９６．９ ｆｙにもなるといわれる。−方、ＹＡＧレ
ーザ（波長１．０６μｍ）５はＣＯ２レーザ５よりも吸
収率が良いが、この場合でも照射したレーザ光の大部分
が反射されてしまう。ここで金属表面の温度が上昇し、
溶融温度３に達すれば、急激にレーザ光吸収率が高くな
るという現象が確かめられている。従って、第２図に示
すこの現象を利用し、効率ｊ！＜レーザ加工をするため
に、レーザ光を照射する部分を他の熱源により加熱し、
金属表面を溶融の状態にすれば良いことになる。In Figure 2, if the horizontal axis is temperature and the vertical axis is laser light absorption rate, CO2 laser 5 (wavelength 10.6 μWL) has a very low absorption rate (ch) at room temperature, and the reflectance of aluminum alloy is 96. It is said that it can reach up to .9 fy. On the other hand, the YAG laser (wavelength: 1.06 μm) 5 has a better absorption rate than the CO2 laser 5, but even in this case, most of the irradiated laser light is reflected. Here the temperature of the metal surface increases,
It has been confirmed that when the melting temperature reaches 3, the laser light absorption rate suddenly increases. Therefore, by utilizing this phenomenon shown in FIG. 2, the efficiency j! <In order to perform laser processing, the part to be irradiated with the laser beam is heated by another heat source,
All you have to do is bring the metal surface into a molten state.
第１図は餌記原理を利用し、ティグ溶接によるアーク熱
とレーザ加工を併用し、効率良くレーザ加工を行なう方
法及び＊ｉ構成の概略図を示す。FIG. 1 shows a method and a schematic diagram of an *i configuration that efficiently performs laser processing by using arc heat by TIG welding and laser processing together using the bait principle.
第１図において、レーザビーム１０はレーザ光発生源７
により発生され、ミラー８により方向な変えられ、集束
レンズ９により集束し、集束レーザビーム１１として照
射される。In FIG. 1, a laser beam 10 is a laser beam source 7.
is generated, its direction is changed by a mirror 8, focused by a focusing lens 9, and irradiated as a focused laser beam 11.
ここで、集束レーザビーム１１がワーク１７に照射され
る部分に、ティグ溶接における溶接トーチ部を組み込み
、ティグ溶接によるアーク１６を発生するものである。Here, a welding torch for TIG welding is incorporated in a portion where the workpiece 17 is irradiated with the focused laser beam 11, and an arc 16 is generated by TIG welding.
該アーク１６は中空タングステン電極稔とその周囲のノ
ズル１３との間にアーク１６のシールドガス１５を流し
、溶接型＃１４によりワーク１７との間に発生する。The arc 16 is generated between the hollow tungsten electrode tip and the surrounding nozzle 13 by flowing the shielding gas 15 of the arc 16 and the workpiece 17 by the welding die #14.
この発生したアーク１６部に中空タングステン電極戎の
内部から、集束レーザビーム１１を照射すれば、ワーク
１７は溶融温度（状態）３まで加熱されており、レーザ
光の吸収率は大幅に増大し、レーザ切断又は溶接等の加
工が効率的に行なえる。またティグ溶接のシールドガス
１５はレーザ加工におけるアシストガスの役目も果たし
、−層の効果が得られる。When the generated arc 16 is irradiated with the focused laser beam 11 from inside the hollow tungsten electrode, the workpiece 17 is heated to melting temperature (state) 3, and the absorption rate of the laser beam increases significantly. Processing such as laser cutting or welding can be performed efficiently. Further, the shielding gas 15 for TIG welding also serves as an assist gas in laser processing, and a negative layer effect can be obtained.
本発明によれば、中空タングステン電極を持つティグ溶
接とレーザ加工機とを併用して構成することにより、レ
ーザ加工の特徴を生かしたま末、アルミ合金等の反射率
の高い材料のレーザ切断、又は溶接等の加工が効率よく
行なえる効果がある。According to the present invention, by combining TIG welding with a hollow tungsten electrode and a laser processing machine, it is possible to take advantage of the features of laser processing, and to laser cut materials with high reflectivity such as aluminum alloys. This has the effect of allowing processes such as welding to be carried out efficiently.
第１図は本発明の一実施例のレーザ加工装置の概略説明
図、第２図はレーザ光の吸収率を示す特性図である。
３・・−・・溶融温度、４・・・・・・Ｘ発温度、５・
・・・・・Ｃ０２レーザ、６・・・・・・ＹＡＧレーザ
、１０・・曲し−ゲビーム、 １１・・・・・・集束レ
ーザビーム、ｎ曲・・中空タングステン電極、１３・・
曲ノズル、ｂ・・・・・・シールドガス、１６・・・・
・・アーク、１７・・・・・・ワークｌ３−一一ノスー
ル
オ
図
第２
図FIG. 1 is a schematic explanatory diagram of a laser processing apparatus according to an embodiment of the present invention, and FIG. 2 is a characteristic diagram showing the absorption rate of laser light. 3...Melting temperature, 4...X temperature, 5.
... C02 laser, 6 ... YAG laser, 10 ... curved beam, 11 ... focused laser beam, n-curve ... hollow tungsten electrode, 13 ...
Curved nozzle, b... Shield gas, 16...
...Arc, 17...Work 13-11 Nosurou Figure 2
Claims (1)
工機とを組み合わせるものであって、ティグ溶接により
ワークを加熱し、ワーク表面のレーザ光吸収率を高め、
中空タングステン電極の中央部から、レーザビームを照
射し、ワークの切断、溶接を行なうことを特徴とするレ
ーザ加工方法。 ２、中空タングステン電極をもつティグ溶接と、該ティ
グ溶接の中空部からレーザビームを照射するレーザ加工
機とを備え、ティグ溶接によりワークを加熱すると共に
レーザを照射するように構成したことを特徴とするレー
ザ加工装置。[Claims] 1. A combination of TIG welding with a hollow tungsten electrode and a laser processing machine, which heats the workpiece by TIG welding to increase the laser light absorption rate of the workpiece surface,
A laser processing method characterized by irradiating a laser beam from the center of a hollow tungsten electrode to cut and weld a workpiece. 2. It is equipped with a TIG welder having a hollow tungsten electrode and a laser processing machine that irradiates a laser beam from the hollow part of the TIG welder, and is configured to heat the workpiece by TIG welding and irradiate the laser beam. Laser processing equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63300514A JPH02147185A (en) | 1988-11-30 | 1988-11-30 | Laser beam machining method and machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63300514A JPH02147185A (en) | 1988-11-30 | 1988-11-30 | Laser beam machining method and machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02147185A true JPH02147185A (en) | 1990-06-06 |
Family
ID=17885736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63300514A Pending JPH02147185A (en) | 1988-11-30 | 1988-11-30 | Laser beam machining method and machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02147185A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003504213A (en) * | 1999-07-15 | 2003-02-04 | プラズマ レーザー テクノロジーズ リミテッド | Composite laser and plasma arc machining torch and method |
| JP2011152570A (en) * | 2010-01-27 | 2011-08-11 | Jfe Engineering Corp | Hollow electrode arc-laser coaxial combination welding method |
| DE102010053721A1 (en) * | 2010-11-30 | 2012-05-31 | Kjellberg Stiftung - Rechtsfähige Stiftung des bürgerlichen Rechts | Torch for tungsten inert gas welding and electrode for use in such a burner |
| WO2015155257A1 (en) * | 2014-04-08 | 2015-10-15 | Brandenburgische Technische Universität Cottbus-Senftenberg | Welding device, method for producing a component using a welding process, and use of an electrode made of a welding filler |
-
1988
- 1988-11-30 JP JP63300514A patent/JPH02147185A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003504213A (en) * | 1999-07-15 | 2003-02-04 | プラズマ レーザー テクノロジーズ リミテッド | Composite laser and plasma arc machining torch and method |
| JP4695317B2 (en) * | 1999-07-15 | 2011-06-08 | プラズマ レーザー テクノロジーズ リミテッド | Combined laser and plasma arc machining torch and method |
| JP2011152570A (en) * | 2010-01-27 | 2011-08-11 | Jfe Engineering Corp | Hollow electrode arc-laser coaxial combination welding method |
| DE102010053721A1 (en) * | 2010-11-30 | 2012-05-31 | Kjellberg Stiftung - Rechtsfähige Stiftung des bürgerlichen Rechts | Torch for tungsten inert gas welding and electrode for use in such a burner |
| DE102010053721B4 (en) * | 2010-11-30 | 2014-05-15 | Kjellberg Stiftung - Rechtsfähige Stiftung des bürgerlichen Rechts | Torch for tungsten inert gas welding and electrode for use in such a burner |
| WO2015155257A1 (en) * | 2014-04-08 | 2015-10-15 | Brandenburgische Technische Universität Cottbus-Senftenberg | Welding device, method for producing a component using a welding process, and use of an electrode made of a welding filler |
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