JPS60137585A - Laser cutting method - Google Patents
Laser cutting methodInfo
- Publication number
- JPS60137585A JPS60137585A JP58250517A JP25051783A JPS60137585A JP S60137585 A JPS60137585 A JP S60137585A JP 58250517 A JP58250517 A JP 58250517A JP 25051783 A JP25051783 A JP 25051783A JP S60137585 A JPS60137585 A JP S60137585A
- Authority
- JP
- Japan
- Prior art keywords
- cutting
- start point
- pulses
- time
- laser beam
- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
Description
【発明の詳細な説明】
賄業上の利用分野
本発明はレーザビームにより加［部句を切ｔ（ｄ−＋す
るレーザ切１９丁加工方法に関する。DETAILED DESCRIPTION OF THE INVENTION FIELD OF APPLICATION IN THE MATERIAL WORKS The present invention relates to a laser cutting method for cutting parts by using a laser beam.
従来り１１の構成とその問題点
レーザビームによる切断加工でｔま従来より加工開始点
付近における部材の自己燻焼か発生するため部（オの肉
加工後使用しない部分に加工開始点金膜けていた。第１
図（ａ）はその例を示す０ずなわぢ第１図（ａ）の矢印
は切断動作の１ｌｕｔ跡を示し一第１図（、ｂ）は実際
に使用する部しの形状を示す。このように従来の方法で
は不必要な部分の切断を行う必要 、があり−その分加
工時間を必要とする欠点があった０
発明の目的
本発明のレーザ切断加工方法は従来の欠点を除去し、加
工開始点での加工部材の自己燃焼全低減するレーザの切
断加工方法を提供することを目的とするものである。Conventional configuration 11 and its problems When cutting with a laser beam, self-smoking of the part occurs near the processing start point. 1st
Figure (a) shows an example of this.The arrow in Figure 1 (a) shows the 1lut mark of the cutting operation, and Figure 1 (,b) shows the shape of the part actually used. In this way, the conventional method has the disadvantage that it is necessary to cut unnecessary parts - which requires processing time.Objective of the InventionThe laser cutting method of the present invention eliminates the disadvantages of the conventional method. The object of the present invention is to provide a laser cutting method that completely reduces self-combustion of a workpiece at the starting point of the workpiece.
発明の構成
本発明のレーザ切断加工方法は切断開始点において、レ
ーザビームと部材の相対位置を固定したまま、所定時間
レーザビームの照射を行い、しかもこの間のレーザビー
ムをパルスとし、その平均強度を１ｔｌｉｌ＋増するこ
とにある。Structure of the Invention The laser cutting method of the present invention irradiates the laser beam for a predetermined period of time with the relative position of the laser beam and the member fixed at the cutting start point, and pulses the laser beam during this period, and calculates the average intensity of the laser beam. It is to increase by 1tlil+.
実施例の説明
本発明のレーザ切断加工方法を図面の第２図および第３
図に沿って説明する。所定の時間Ｔ１の間、ビームと部
材の相対位置を固定しておシ、こノ間ハルスビームとし
ている時間Ｔ１の間ビーム出力全漸増している。ビーム
出力の漸増はパルスピークの増大およびパル７０８時間
の増大、もしくはパルスＯＦＦ時間の減少によって実施
する。DESCRIPTION OF EMBODIMENTS The laser cutting method of the present invention is illustrated in FIGS. 2 and 3 of the drawings.
This will be explained according to the diagram. During a predetermined time T1, the relative positions of the beam and the member are fixed, and during this time the beam output is gradually increased as a Hals beam. Gradual increases in beam power are accomplished by increasing the pulse peak and increasing the pulse 708 time or decreasing the pulse OFF time.
所定の時間経過後はパルス出力のピークと同一のレーザ
強度で一連続したビームで加工を作っていいＯ
なおレーザ切断の場合、第３図に示すようにレーザビー
ム１の照射裏面より加熱された切断粉材２が落下してゆ
く。このため過剰な熱が加工部材３に残されずに熱影響
の少ない切ｉ＋；ｌｉ加工ができる。After a predetermined period of time has elapsed, processing can be performed with one continuous beam at the same laser intensity as the peak of the pulse output.In the case of laser cutting, as shown in Figure 3, the laser beam 1 is heated from the back side irradiated. The cutting powder material 2 is falling. Therefore, excessive heat is not left in the workpiece 3, and cutting i+;li processing can be performed with less thermal influence.
一方、切ｋ「開始点では切断粉材２が除去されるこされ
ると部材自身が酸化燃焼するが、レーザビーム１のパル
スの平均出力を漸増することにより切１仇開始点の切断
幅を小さくできる。さらにパルスの平均出力を増加する
効果を説明する。加工開始直後のパルス出力が弱いため
第４図（ａ）に示すように、加工する部材３の表面に窪
み４が形成される。On the other hand, when the cutting powder material 2 is removed at the starting point of the cut, the part itself oxidizes and burns, but by gradually increasing the average output of the pulses of the laser beam 1, the cutting width at the starting point of the cutting 1 can be increased. Furthermore, the effect of increasing the average pulse output will be explained.Since the pulse output is weak immediately after the start of machining, a depression 4 is formed on the surface of the member 3 to be machined, as shown in FIG. 4(a).
このため第４図（ｂ）に示すように窪み４の内壁面４ａ
でレーザビーム１が反射され、これが窪み４の底部４ｂ
に集中される′。このため、第３図（Ｃ）のようにレー
ザビーム１の入熱が窪み４の中心部に集中され１周辺に
分散されず切断幅を小さくできるものである。Therefore, as shown in FIG. 4(b), the inner wall surface 4a of the recess 4
The laser beam 1 is reflected at the bottom 4b of the recess 4.
concentrated on′. Therefore, as shown in FIG. 3(C), the heat input of the laser beam 1 is concentrated in the center of the depression 4 and is not dispersed around the depression 4, making it possible to reduce the cutting width.
発明の効果
本発明のレーザ切断加工方法は切断開始点におとなく加
工ができる。すなわち、レーザパルスの焼を防止できる
。Effects of the Invention The laser cutting method of the present invention allows processing to be performed at the starting point of cutting. That is, burning of the laser pulse can be prevented.
さらに−パルスの平均出力を漸増することにより開始点
の切断巾を小さくでき、切断開始点を必要部材の切断形
状の動跡上に置くことができる。Furthermore, by gradually increasing the average power of the pulses, the cutting width at the starting point can be reduced, and the cutting starting point can be placed on the trajectory of the cut shape of the required part.
また、パルス出力を漸増することにより、入熱の集中化
に加えて加工時間が短縮され部材への残留熱量を小さく
できる。これにより、加工開始点での切断巾を最小に留
めることができ、不必要な切断１ｌ１１１跡を設けなく
ても良好な力υ工を実現でき一加工開始時間を短縮でき
る優れた効果を奏するものである。Further, by gradually increasing the pulse output, in addition to concentrating the heat input, the machining time can be shortened and the amount of residual heat in the member can be reduced. As a result, the cutting width at the starting point of machining can be kept to a minimum, and good force machining can be achieved without creating unnecessary cutting marks, which has the excellent effect of shortening the machining start time. It is.
第１図（ａ） 、 （ｂ）はそれぞれ従来列における加
工動跡の説明図および切断部拘の説明図−第２図は本発
明のレーザ切断加工方法を実施し／ζレーザビームの波
形図、第３図は切断の状態を示す説明図。
第４図（ａ） 、 ＜ｂ）、 ｉｃ）はそれぞれ切断開
始点の切１！ｉｌｒ幅を示す断面図である。
°ｒ１ ・・・・・・所定の時間−１・・・・・・レー
ザビーム、２・・・切１ｖＴ粉材、３・・・・・・加工
部材、４・・・・・・窪み一４ａ・・・・・内壁面、４
ｂ・・・・・・底部。
代理人の氏名 弁理士 中 尾 敏 男 ほか１化第
１ 区
（αン （４トノ
第２図
し
くｌス・ン （４ン （Ｃ）Figures 1 (a) and (b) are explanatory diagrams of the machining trajectory and cutting part constraints in the conventional row, respectively - Figure 2 is a waveform diagram of the ζ laser beam when the laser cutting method of the present invention is implemented. , FIG. 3 is an explanatory diagram showing the state of cutting. Figure 4 (a), <b), and ic) are respectively cut 1! of the cutting start point! FIG. 3 is a cross-sectional view showing the ilr width. °r1...Predetermined time -1...Laser beam, 2...Cut 1vT powder material, 3...Working member, 4...Indentation 1 4a...Inner wall surface, 4
b...Bottom. Name of agent: Patent attorney Toshio Nakao et al.
1 ward (αn (4th figure 2)
Claims (1)
の時間加工部材とレーザビームの相対位置全固定し、こ
の間のレーザビームをパルストシーその平均強度を漸増
するレーザ切Ｉ０ｒ加工方法。A laser cutting I0r processing method in which the relative position of the workpiece and the laser beam is completely fixed for a predetermined period of time at the cutting start point, and the average intensity of the laser beam is gradually increased during this period.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58250517A JPS60137585A (en) | 1983-12-26 | 1983-12-26 | Laser cutting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58250517A JPS60137585A (en) | 1983-12-26 | 1983-12-26 | Laser cutting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60137585A true JPS60137585A (en) | 1985-07-22 |
Family
ID=17209063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58250517A Pending JPS60137585A (en) | 1983-12-26 | 1983-12-26 | Laser cutting method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60137585A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994000271A1 (en) * | 1992-06-24 | 1994-01-06 | Fanuc Ltd | Laser machining apparatus |
| US5585018A (en) * | 1994-02-24 | 1996-12-17 | Mitsubishi Denki Kabushiki Kaisha | Laser cutting method eliminating defects in regions where cutting conditions are changed |
-
1983
- 1983-12-26 JP JP58250517A patent/JPS60137585A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994000271A1 (en) * | 1992-06-24 | 1994-01-06 | Fanuc Ltd | Laser machining apparatus |
| US5444211A (en) * | 1992-06-24 | 1995-08-22 | Fanuc, Ltd. | Laser beam machine for cutting a workpiece using multiple machine conditions |
| US5585018A (en) * | 1994-02-24 | 1996-12-17 | Mitsubishi Denki Kabushiki Kaisha | Laser cutting method eliminating defects in regions where cutting conditions are changed |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2204254A3 (en) | Laser processing apparatus and method with focusing adjustments achieved with low laser power output | |
| JPH10113815A (en) | Laser-assisted milling method | |
| KR102140458B1 (en) | Laser systems for drilling holes in medical devices | |
| JPS60137585A (en) | Laser cutting method | |
| JPS60137586A (en) | Laser cutting method | |
| JP3487404B2 (en) | Semiconductor laser pumped Q-switched solid-state laser device | |
| JPS60216987A (en) | Laser welding method | |
| JPS5739088A (en) | Laser working device | |
| JPS60240393A (en) | Cutting method by laser cutting machine | |
| JPS57181787A (en) | Laser working method | |
| JPH09155602A (en) | Laser heating cutting method | |
| JPS55114490A (en) | Laser welding method | |
| JPH0327752Y2 (en) | ||
| JPH0357579A (en) | Laser beam machining method | |
| ATE233892T1 (en) | DEBURRING PROCESS | |
| JPS63104791A (en) | Laser beam machining method | |
| RU96123653A (en) | METHOD FOR THERMAL PROCESSING OF DRIVES FOR HOT CUTS OF RENT | |
| JPH04309480A (en) | Laser beam machining method | |
| JPS6234691A (en) | Laser beam marking device | |
| JPH046475B2 (en) | ||
| JPS5839728A (en) | Laser hardening method | |
| JPS5395847A (en) | Laser welding method | |
| JPS589782A (en) | Cutting method by laser | |
| JPS5699091A (en) | Laser beam cutting method | |
| Lau et al. | Pulsed Nd: YAG laser cutting of SiC/Al-Li metal matrix composite |