JPH10249563A - Heat cutting method - Google Patents
Heat cutting methodInfo
- Publication number
- JPH10249563A JPH10249563A JP9051661A JP5166197A JPH10249563A JP H10249563 A JPH10249563 A JP H10249563A JP 9051661 A JP9051661 A JP 9051661A JP 5166197 A JP5166197 A JP 5166197A JP H10249563 A JPH10249563 A JP H10249563A
- Authority
- JP
- Japan
- Prior art keywords
- laser beam
- route
- path
- closed curve
- thermal cutting
- 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.)
- Withdrawn
Links
- 238000005520 cutting process Methods 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims description 16
- 238000003754 machining Methods 0.000 claims abstract description 15
- 238000001816 cooling Methods 0.000 abstract description 5
- 238000003672 processing method Methods 0.000 description 4
- 238000013459 approach Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Laser Beam Processing (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、レーザ加工，プラ
ズマ加工等によりコーナ部を熱切断する際の熱切断加工
方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thermal cutting method for thermally cutting a corner portion by laser processing, plasma processing or the like.
【０００２】[0002]
【従来の技術】従来、レーザ加工もしくはプラズマ加工
等の熱切断加工において、コーナ部の頂点（エッジ部）
の加工を行う際に、このエッジ部においてガス冷却を行
うとともに、溶け落ち防止のためにレーザ等の出力もし
くは加工速度を低下させるようにし、これによって加工
品質の向上を図るようにしたものが知られている。2. Description of the Related Art Conventionally, in thermal cutting such as laser processing or plasma processing, a vertex (edge) of a corner portion.
At the time of machining, gas cooling is performed at this edge portion, and the output of a laser or the like or the machining speed is reduced to prevent burn-through, thereby improving machining quality. Have been.
【０００３】また、例えば特開平５−２１６５２３号公
報においては、エッジ部において２本の稜線を指定量だ
け延長し、この延長によりできた端点間を直線稜線もし
くは円弧稜線で結合することにより全体としてループ状
の加工経路を生成するようにしたものが提案されてい
る。[0003] For example, in Japanese Patent Application Laid-Open No. Hei 5-216523, two ridge lines are extended by a specified amount at an edge portion, and end points formed by this extension are connected by a straight ridge line or an arc ridge line as a whole. A device that generates a loop-shaped machining path has been proposed.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、エッジ
部の品質向上のためにガス冷却を行ったり加工速度を低
下させたりする方法では、高速加工が行えないという問
題点がある。これに対して、前記公報に記載の方法のよ
うにエッジ部の外方にループ状の加工経路を生成すれ
ば、この高速加工という課題に対してはある程度対処す
ることが可能である。ところが、この公報のものでは、
付加されたループ状の経路部分においても加工が実行さ
れるために、被加工材を余分に加工することとなってそ
の分スクラップが増えるという問題点があるほか、穴形
状を有する加工品の加工には適用できないという問題点
がある。However, there is a problem that high-speed machining cannot be performed by the method of performing gas cooling or decreasing the machining speed in order to improve the quality of the edge portion. On the other hand, if a loop-shaped machining path is generated outside the edge portion as in the method described in the above publication, the problem of high-speed machining can be dealt with to some extent. However, in this publication,
Since the processing is also performed in the added loop-shaped path portion, there is a problem that the work material is processed excessively, thereby increasing the amount of scrap, and the processing of a processed product having a hole shape. Has the problem that it cannot be applied.
【０００５】本発明は、このような問題点を解消するた
めになされたもので、スクラップを最小限にするととも
に穴形状の加工品にも適用することができ、しかもエッ
ジ部の品質向上が図れて高速加工も可能な熱切断加工方
法を提供することを目的とするものである。SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and can be applied to a hole-shaped workpiece while minimizing scrap and improving the quality of an edge portion. It is an object of the present invention to provide a thermal cutting method capable of high-speed processing.
【０００６】[0006]
【課題を解決するための手段および作用・効果】前述さ
れた目的を達成するために、本発明による熱切断加工方
法は、少なくとも９０°以下のコーナ部を熱切断する際
の熱切断加工方法であって、前記コーナ部の頂点を通り
そのコーナ部を形成する２辺に連続する閉曲線経路を加
工経路に付加するとともに、この閉曲線経路において熱
切断加工を中断することを特徴とするものである。Means for Solving the Problems and Functions / Effects In order to achieve the above-mentioned object, a thermal cutting method according to the present invention is a thermal cutting method for thermally cutting at least a corner of 90 ° or less. In addition, a closed curved path that passes through the vertex of the corner portion and continues to two sides forming the corner portion is added to the machining path, and the thermal cutting is interrupted in the closed curved path.
【０００７】本発明においてコーナ部の加工に際して、
このコーナ部を形成する１辺の加工がエッジ部に到達し
た後、その１辺に連続するとともにコーナ部の他の１辺
に繋がる閉曲線経路に沿う加工経路が採られ、この閉曲
線経路において熱切断加工が中断される。そして、加工
経路が再度エッジ部近傍に到達した後は熱切断加工が再
開されて前記他の１辺に沿う加工が実行される。本発明
によれば、エッジ部の外方にコーナ部の各辺に連続する
閉曲線経路が設けられているので、ガス冷却を行ったり
加工速度を低下させたりする必要がなくなり、加工品の
品質向上を図ることができ、かつ高速加工を行うことが
可能となる。また、この閉曲線経路においては熱切断加
工が中断されるので、被加工材を余分に加工することも
なくスクラップを最小限にすることができるとともに、
穴形状を有する加工品の加工にも適用することができ
る。In the present invention, when processing a corner portion,
After the processing of one side forming the corner reaches the edge, a processing path is taken along a closed curve path which is continuous to the one side and is connected to the other side of the corner, and heat cutting is performed on the closed curve path. Processing is interrupted. Then, after the processing path reaches the vicinity of the edge portion again, the thermal cutting is restarted, and the processing along the other side is executed. According to the present invention, since a closed curve path that is continuous to each side of the corner portion is provided outside the edge portion, there is no need to perform gas cooling or reduce the processing speed, thereby improving the quality of the processed product. And high-speed processing can be performed. In addition, since the thermal cutting is interrupted in the closed curve path, scrap can be minimized without excessively processing the workpiece,
The present invention can be applied to processing of a processed product having a hole shape.
【０００８】本発明において、前記閉曲線経路は、前記
コーナ部を形成する２辺の各延長線に内接する曲線経路
であるのが好ましい。こうすることで、コーナ部を形成
する１辺から閉曲線経路を介して他の１辺への移行を滑
らかな曲線に沿ってより円滑に行うことができる。In the present invention, it is preferable that the closed curved path is a curved path inscribed in each extended line of the two sides forming the corner portion. In this way, the transition from one side forming the corner portion to the other side via the closed curve path can be performed more smoothly along a smooth curve.
【０００９】前記熱切断加工はレーザ加工であり、この
熱切断加工の中断がレーザ光照射の中断であり得る。ま
た、熱切断加工がプラズマ加工である場合には、この熱
切断加工の中断はプラズマ電源の中断（オフ作動）であ
り得る。[0009] The thermal cutting is laser processing, and the interruption of the thermal cutting may be interruption of laser beam irradiation. When the thermal cutting is plasma processing, the interruption of the thermal cutting may be an interruption (off operation) of the plasma power supply.
【００１０】[0010]
【発明の実施の形態】次に、本発明による熱切断加工方
法の具体的な実施の形態につき、図面を参照しつつ説明
する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, specific embodiments of the thermal cutting method according to the present invention will be described with reference to the drawings.
【００１１】図１には、本発明の一実施例に係る加工方
法の説明図が示されている。本実施例は、被加工材Ｗに
レーザ加工により矩形穴Ｈを切断する場合に適用したも
のである。FIG. 1 is an explanatory view of a processing method according to an embodiment of the present invention. This embodiment is applied to a case where a rectangular hole H is cut in a workpiece W by laser processing.
【００１２】本実施例においては、次のような手順にし
たがってレーザ加工が実行される。まず、レーザ加工の
始点Ｐ1 までの進入経路においては、レーザ光をＯＦＦ
にして、レーザ加工ヘッドを被加工材Ｗに対して相対的
に移動させる。次に、始点Ｐ 1 に達すると、レーザ光を
オンにして切削送りを実行しながら曲線経路Ｐ2 に沿っ
てピアシング加工を実行する。ここで、この曲線経路Ｐ
2 は切削部の端面を形成する直線経路Ｐ3 に内接する円
弧もしくはそれに近い形状とするのが、この曲線経路Ｐ
2 から直線経路Ｐ3 への移行をスムーズに行う上で好ま
しい。In this embodiment, the following procedure is used.
Accordingly, laser processing is performed. First, laser processing
Start point P1Turn off laser light on approach route to
And the laser processing head is moved relative to the workpiece W.
Move to Next, the starting point P 1When the laser reaches
Turn on and execute cutting feed while curve path PTwoAlong
To perform piercing. Here, this curved path P
TwoIs the straight line path P that forms the end face of the cutting partThreeCircle inscribed in
An arc or a shape close to it is the curved path P
TwoStraight path P fromThreeFor a smooth transition to
New
【００１３】続いて、レーザ加工ヘッドがコーナ部の頂
点（エッジ部）Ｐ4 に達すると、レーザ光をＯＦＦにす
るとともに、このレーザ加工ヘッドを、直線経路Ｐ3 に
連続する円弧状の閉曲線経路Ｐ5 に沿うように、かつ再
度エッジ部Ｐ4 に達するまで被加工材Ｗに対して相対移
動させる。次いで、この閉曲線経路Ｐ5 の移動の後にエ
ッジ部Ｐ4 近傍に達すると、レーザ光を再びＯＮにする
とともに、コーナ部を形成する他の辺である直線経路Ｐ
6 に沿って移動させる。ここで、前記閉曲線経路Ｐ
5 は、コーナ部を形成する２辺の各延長線に内接する曲
線経路とするのが好ましい。また、この閉曲線経路Ｐ5
を構成する円弧の半径は、大きすぎると加工時間の無駄
を生じ、小さすぎると高速でのスムーズな動きができな
いことから、２ｍｍ〜４ｍｍ程度とするのが好適であ
る。なお、図１において、破線で示される曲線がレーザ
光がＯＦＦの状態でのレーザ加工ヘッドの相対移動軌跡
である。Subsequently, when the laser processing head reaches the vertex (edge portion) P 4 of the corner portion, the laser beam is turned off, and the laser processing head is connected to an arc-shaped closed curve path that is continuous with the linear path P 3. along the P 5, and moved relative workpiece W until again reaching the edge portion P 4. Then, when the edge portion P 4 near after movement of the closed curve path P 5 is reached, while turns ON the laser beam again, straight path P which is another side forming a corner portion
Move along 6 . Here, the closed curve path P
5 is preferably a curved path inscribed in each extension line of the two sides forming the corner portion. In addition, the closed curve path P 5
If the radius of the arc that constitutes is too large, processing time is wasted, and if it is too small, smooth movement at high speed is not possible. Therefore, the radius of the arc is preferably about 2 mm to 4 mm. In FIG. 1, a curve shown by a broken line is a relative movement trajectory of the laser processing head when the laser light is off.
【００１４】このようにして１つのコーナ部の加工が終
了すると、他のコーナ部についても同様の手法によって
図１の矢印にて示されるように順次加工が実行され、レ
ーザ加工ヘッドが曲線経路Ｐ2 と直線経路Ｐ3 との交点
に達したときに矩形穴Ｈの加工が終了する。When the machining of one corner is completed in this way, the other corners are sequentially machined by the same method as shown by the arrow in FIG. processing of the rectangular hole H is completed when it reaches the intersection of the 2 and straight path P 3.
【００１５】本実施例の加工方法によれば、エッジ部の
外方の閉曲線経路（ループ状経路）に沿ってレーザ加工
ヘッドを相対移動させるように構成されているので、ガ
ス冷却を行ったり加工速度を低下させたりする必要がな
くなり、加工品の品質向上とともに高速加工を行うこと
が可能となる。また、この閉曲線経路においてはレーザ
光がＯＦＦにされるので、被加工材Ｗを余分に加工する
こともなくスクラップを最小限にすることができる。According to the processing method of this embodiment, the laser processing head is relatively moved along a closed curved path (loop-shaped path) outside the edge portion, so that gas cooling or processing can be performed. There is no need to reduce the speed, and it is possible to improve the quality of the processed product and perform high-speed processing. In addition, since the laser beam is turned off in this closed curve path, scrap can be minimized without processing the workpiece W excessively.
【００１６】本実施例においては、矩形穴の切断加工に
適用したものを説明したが、本発明は、矩形形状に限ら
ず、また穴形状に限らずいろいろな形状の製品もしくは
穴の切断加工に適用することができる。図２には、三角
形の１つの頂点が内側に円弧状にくびれた形の製品を切
断加工する場合の適用例が示されている。この例の場
合、被加工材に対するレーザ加工ヘッドの相対移動は点
Ｑ1 を始点として図の矢印で示されるように順次行われ
る。ここで、破線で示される経路ではレーザ光がＯＦＦ
状態にされる。この例に示されるように、エッジ部の角
度に応じて外側に形成される閉曲線経路の形状が異なる
こととなる。すなわち、エッジ部の角度が鋭角になるほ
ど閉曲線経路が細長い形状となり、エッジ部の角度が９
０°に近づくほど閉曲線経路が円形に近い形状となる。In this embodiment, an example in which the present invention is applied to the cutting of a rectangular hole has been described. However, the present invention is not limited to the rectangular shape and is not limited to the hole shape. Can be applied. FIG. 2 shows an application example in the case of cutting a product in which one vertex of a triangle is inwardly constricted in an arc shape. In this example, the relative movement of the laser processing head relative to the workpiece is sequentially performed as illustrated in FIG arrows as a starting point the point Q 1. Here, the laser light is turned off in the path indicated by the broken line.
State. As shown in this example, the shape of the closed curve path formed outside varies depending on the angle of the edge portion. That is, as the angle of the edge becomes acute, the closed curve path becomes elongated, and the angle of the edge becomes nine.
As the angle approaches 0 °, the closed curve path has a shape closer to a circle.
【００１７】なお、図１に示される実施例においては、
穴形状の加工を行うために、ピアシング加工を切断経路
の内側部分（スクラップとなる部分）で行うものとした
が、穴加工ではなく種々の形状の製品を切断加工により
得る場合には、図２に示されるようにピアシング加工を
切断経路の外側部分で行うのは言うまでもない。In the embodiment shown in FIG. 1,
In order to perform the hole shape processing, the piercing processing is performed on the inner part of the cutting path (the part to be scrapped). However, when products of various shapes are obtained by the cutting processing instead of the hole processing, FIG. Needless to say, the piercing is performed on the outer portion of the cutting path as shown in FIG.
【００１８】本実施例においては、レーザ加工に適用し
たものを説明したが、本発明は、例えばプラズマ加工等
の他の熱切断加工に対しても適用することができる。な
お、プラズマ加工の場合、閉曲線経路においてプラズマ
電源をＯＦＦ作動することとなる。In this embodiment, the description has been given of the case where the present invention is applied to laser processing. However, the present invention can be applied to other thermal cutting processing such as plasma processing. In the case of plasma processing, the plasma power supply is turned off in a closed curve path.
【図１】図１は、本発明の一実施例に係るレーザ加工方
法の説明図である。FIG. 1 is an explanatory diagram of a laser processing method according to one embodiment of the present invention.
【図２】図２は、レーザ加工方法の他の例を示す説明図
である。FIG. 2 is an explanatory diagram showing another example of the laser processing method.
Ｗ 被加工材 Ｈ 矩形穴 Ｐ1 ，Ｑ1 始点 Ｐ2 曲線経路 Ｐ3 直線経路 Ｐ4 エッジ部 Ｐ5 閉曲線経路W workpiece H rectangular hole P 1, Q 1 starting P 2 curved path P 3 straight path P 4 edge portion P 5 closed curve path
Claims (4)
断する際の熱切断加工方法であって、前記コーナ部の頂
点を通りそのコーナ部を形成する２辺に連続する閉曲線
経路を加工経路に付加するとともに、この閉曲線経路に
おいて熱切断加工を中断することを特徴とする熱切断加
工方法。1. A hot cutting method for thermally cutting a corner portion of at least 90 ° or less, wherein a closed curved path passing through a vertex of the corner part and continuing to two sides forming the corner part is defined as a machining path. In addition to the above, a thermal cutting method is characterized in that the thermal cutting is interrupted in the closed curve path.
する２辺の各延長線に内接する曲線経路である請求項１
に記載の熱切断加工方法。2. The closed curved path is a curved path inscribed in each extension line of two sides forming the corner portion.
2. The thermal cutting method according to 1.
の熱切断加工の中断がレーザ光照射の中断である請求項
１または２に記載の熱切断加工方法。3. The thermal cutting method according to claim 1, wherein the thermal cutting is laser processing, and the interruption of the thermal cutting is interruption of laser beam irradiation.
この熱切断加工の中断がプラズマ電源の中断である請求
項１または２に記載の熱切断加工方法。4. The thermal cutting process is a plasma process,
3. The thermal cutting method according to claim 1, wherein the interruption of the thermal cutting is an interruption of a plasma power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9051661A JPH10249563A (en) | 1997-03-06 | 1997-03-06 | Heat cutting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9051661A JPH10249563A (en) | 1997-03-06 | 1997-03-06 | Heat cutting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10249563A true JPH10249563A (en) | 1998-09-22 |
Family
ID=12893069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9051661A Withdrawn JPH10249563A (en) | 1997-03-06 | 1997-03-06 | Heat cutting method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10249563A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006239763A (en) * | 2005-03-07 | 2006-09-14 | Honda Motor Co Ltd | Laser beam processing method for interior material |
| JP2008186046A (en) * | 2007-01-26 | 2008-08-14 | Mitsubishi Heavy Ind Ltd | Cutting path producing method, program, and apparatus |
| JP2008200712A (en) * | 2007-02-20 | 2008-09-04 | Fanuc Ltd | Method and apparatus for laser beam machining |
| JP2010123110A (en) * | 2008-10-21 | 2010-06-03 | Matsuura Machinery Corp | Cutting method for forming acute angle |
| DE102011000529B3 (en) * | 2011-02-07 | 2012-04-05 | Lpkf Laser & Electronics Ag | Introducing through hole in substrate by electromagnetic radiation, comprises predetermining cutting line for cutting polygonal surface along through hole, which is introduced by corner points of connected side lines in substrate |
| CN102873429A (en) * | 2012-09-15 | 2013-01-16 | 山西晋城无烟煤矿业集团有限责任公司 | Continuous cutting process suitable for small workpieces |
| JP2015139778A (en) * | 2014-01-27 | 2015-08-03 | 株式会社アマダホールディングス | Laser processing device and laser processing method |
| JP2015157303A (en) * | 2014-02-25 | 2015-09-03 | 株式会社アマダホールディングス | Laser processing method and laser processing device |
| CN110369884A (en) * | 2019-08-21 | 2019-10-25 | 奔腾楚天激光（武汉）有限公司 | A kind of turning pulse cutting process of processing thick carbon steel plate right angle processing |
| CN114535792A (en) * | 2022-03-24 | 2022-05-27 | 大族激光科技产业集团股份有限公司 | Construction method for machining track corner transition arc, machining equipment and storage medium |
| WO2023037915A1 (en) | 2021-09-09 | 2023-03-16 | 株式会社アマダ | Laser processing method and laser processing device |
-
1997
- 1997-03-06 JP JP9051661A patent/JPH10249563A/en not_active Withdrawn
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006239763A (en) * | 2005-03-07 | 2006-09-14 | Honda Motor Co Ltd | Laser beam processing method for interior material |
| JP2008186046A (en) * | 2007-01-26 | 2008-08-14 | Mitsubishi Heavy Ind Ltd | Cutting path producing method, program, and apparatus |
| JP2008200712A (en) * | 2007-02-20 | 2008-09-04 | Fanuc Ltd | Method and apparatus for laser beam machining |
| JP2010123110A (en) * | 2008-10-21 | 2010-06-03 | Matsuura Machinery Corp | Cutting method for forming acute angle |
| TWI464030B (en) * | 2011-02-07 | 2014-12-11 | Lpkf Laser & Electronics Ag | Verfahren zum einbringen einer durchbrechung in ein substrat |
| DE102011000529B3 (en) * | 2011-02-07 | 2012-04-05 | Lpkf Laser & Electronics Ag | Introducing through hole in substrate by electromagnetic radiation, comprises predetermining cutting line for cutting polygonal surface along through hole, which is introduced by corner points of connected side lines in substrate |
| JP2012161843A (en) * | 2011-02-07 | 2012-08-30 | Lpkf Laser & Electronics Ag | Method for forming opening on substrate |
| CN102873429A (en) * | 2012-09-15 | 2013-01-16 | 山西晋城无烟煤矿业集团有限责任公司 | Continuous cutting process suitable for small workpieces |
| CN102873429B (en) * | 2012-09-15 | 2015-01-28 | 山西晋城无烟煤矿业集团有限责任公司 | Continuous cutting process suitable for small workpieces |
| JP2015139778A (en) * | 2014-01-27 | 2015-08-03 | 株式会社アマダホールディングス | Laser processing device and laser processing method |
| JP2015157303A (en) * | 2014-02-25 | 2015-09-03 | 株式会社アマダホールディングス | Laser processing method and laser processing device |
| CN110369884A (en) * | 2019-08-21 | 2019-10-25 | 奔腾楚天激光（武汉）有限公司 | A kind of turning pulse cutting process of processing thick carbon steel plate right angle processing |
| WO2023037915A1 (en) | 2021-09-09 | 2023-03-16 | 株式会社アマダ | Laser processing method and laser processing device |
| CN114535792A (en) * | 2022-03-24 | 2022-05-27 | 大族激光科技产业集团股份有限公司 | Construction method for machining track corner transition arc, machining equipment and storage medium |
| CN114535792B (en) * | 2022-03-24 | 2023-11-07 | 大族激光科技产业集团股份有限公司 | Construction method of processing track corner transition arc, processing equipment and storage medium |
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