JPH0788667A - Laser beam machine - Google Patents
Laser beam machineInfo
- Publication number
- JPH0788667A JPH0788667A JP5236927A JP23692793A JPH0788667A JP H0788667 A JPH0788667 A JP H0788667A JP 5236927 A JP5236927 A JP 5236927A JP 23692793 A JP23692793 A JP 23692793A JP H0788667 A JPH0788667 A JP H0788667A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- assist gas
- processing head
- supply
- regulator
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、例えば、金属板等の加
工対象物を所定の形状に切断するのに好適なレーザ加工
機に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laser beam machine suitable for cutting a workpiece such as a metal plate into a predetermined shape.
【０００２】[0002]
【従来の技術】一般に、レーザ加工機を用いて金属板等
の加工対象物を切断するときには、この加工対象物にレ
ーザビームを照射するとともに、酸素ガス，窒素ガス等
をいわゆるアシストガスとして噴出し、レーザビームで
溶融した加工対象物を吹き飛ばすようにして切断加工を
行っている。2. Description of the Related Art Generally, when cutting a workpiece such as a metal plate with a laser beam machine, the workpiece is irradiated with a laser beam and oxygen gas, nitrogen gas, etc. are jetted as so-called assist gas. The cutting process is performed by blowing away the processing object melted by the laser beam.
【０００３】従来、このような切断加工を行うレーザ加
工機では、通常、噴出するアシストガスの圧力を以下に
示すような構造により調整できるようになっている。従
来のレーザ加工機においては、アシストガスが充填され
たガス容器と加工ヘッドとがアシストガス供給配管で接
続されている。このアシストガス供給経路には、アシス
トガスの圧力を調整するための、いわゆるレギュレータ
（圧力調整器）が備えられ、加工ヘッドへのアシストガ
スの供給を、常時所望の圧力で行なうようになってい
る。Conventionally, in a laser processing machine for performing such cutting processing, the pressure of the assist gas ejected can usually be adjusted by the following structure. In a conventional laser processing machine, a gas container filled with assist gas and a processing head are connected by an assist gas supply pipe. The assist gas supply path is provided with a so-called regulator (pressure regulator) for adjusting the pressure of the assist gas, and the assist gas is constantly supplied to the processing head at a desired pressure. .
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上述し
たような従来のレーザ加工機においては、アシストガス
の圧力設定値を変更するためには、レギュレータの圧力
計等を目視しながら調整ダイヤルにより手動で調整しな
ければならないので、作業を中断しなければならず圧力
設定値の変更に手間がかかるうえ、その設定精度も良く
ないという問題がある。特に、加工ヘッドを加工対象物
に近接した際には、加工ヘッドが加工対象物から離間し
た状態に比して、加工ヘッド内の圧力が急激に上昇す
る。また、加工対象材料の材質や板厚等により、ノズル
径を変えた場合も圧力が変わる。したがって、圧力の上
昇を予め見込んでレギュレータの圧力設定を行なう必要
があり、設定作業が複雑なものとなっていた。本発明
は、以上のような点を考慮してなされたもので、アシス
トガスの圧力設定値の変更を自動的に行い作業効率を向
上させるとともに、その設定精度を向上させることので
きるレーザ加工機を提供することを目的とする。However, in the conventional laser processing machine as described above, in order to change the pressure setting value of the assist gas, the pressure dial of the regulator is visually checked and manually adjusted by the adjustment dial. Since it has to be adjusted, there is a problem in that the work must be interrupted, it takes time to change the pressure set value, and the setting accuracy is not good. In particular, when the processing head approaches the object to be processed, the pressure in the processing head rises sharply as compared with the state where the processing head is separated from the object to be processed. Further, the pressure also changes when the nozzle diameter is changed, depending on the material and plate thickness of the material to be processed. Therefore, it is necessary to set the pressure of the regulator in anticipation of an increase in pressure in advance, which complicates the setting work. The present invention has been made in consideration of the above points, and a laser processing machine capable of automatically changing the pressure setting value of the assist gas to improve work efficiency and improve the setting accuracy thereof. The purpose is to provide.
【０００５】[0005]
【課題を解決するための手段】本発明は、加工ヘッドか
らレーザビームを照射するとともにアシストガスを噴出
して加工対象物を切断するレーザ加工機であって、該レ
ーザ加工機のアシストガス供給源から加工ヘッドにアシ
ストガスを供給するアシストガス供給経路と、該アシス
トガス供給経路に設けられアシストガスの供給圧を調整
する圧力調整器と、加工ヘッド内のアシストガス圧を検
出する圧力センサとを具備し、圧力調整器は、圧力セン
サで検出したアシストガス圧に応じて、アシストガスの
供給圧を、加工ヘッドのアシストガスを所望の圧力に保
持するように調整する構成であることを特徴としてい
る。SUMMARY OF THE INVENTION The present invention is a laser processing machine for irradiating a laser beam from a processing head and ejecting an assist gas to cut an object to be processed, and an assist gas supply source for the laser processing machine. An assist gas supply path for supplying the assist gas to the processing head from the above, a pressure regulator provided in the assist gas supply path for adjusting the supply pressure of the assist gas, and a pressure sensor for detecting the assist gas pressure in the processing head. The pressure regulator is characterized in that it is configured to adjust the supply pressure of the assist gas so as to maintain the assist gas of the processing head at a desired pressure in accordance with the assist gas pressure detected by the pressure sensor. There is.
【０００６】[0006]
【作用】本発明のレーザ加工機では、圧力調整器と圧力
センサとが、アシストガスの設定供給圧を保持するフィ
ードバック回路を形成し、圧力センサの検出した加工ヘ
ッド内のアシストガス圧に応じて圧力調整器がアシスト
ガスの供給圧を変動し、加工ヘッド内を所望のガス圧に
保持する。In the laser beam machine of the present invention, the pressure regulator and the pressure sensor form a feedback circuit for holding the set supply pressure of the assist gas, and the pressure regulator and the pressure sensor respond to the assist gas pressure in the processing head detected by the pressure sensor. The pressure regulator fluctuates the supply pressure of the assist gas to keep the inside of the processing head at a desired gas pressure.
【０００７】[0007]
【実施例】以下、本発明を図面に示す一実施例を参照し
て説明する。図１は、本発明に係るレーザ加工機を示す
ものであって、図中、符号１は加工ヘッド、２はアシス
トガスボンベ（アシストガス供給源）、３はアシストガ
ス供給管（アシストガス供給経路）、４は可変レギュレ
ータ（圧力調整器）、５は圧力センサ、６は圧力指示
部、７は電磁弁、８は増幅器である。レーザ加工機は、
加工ヘッド１と、該加工ヘッド１にアシストガスボンベ
２内のアシストガスを導くアシストガス供給管３と、該
アシストガス供給管３に設けられ、加工ヘッド１へのア
シストガスの供給圧を調整する可変レギュレータ４と、
加工ヘッド１内のアシストガス圧を検出する圧力センサ
５とを具備して構成されている。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an embodiment shown in the drawings. FIG. 1 shows a laser processing machine according to the present invention. In the figure, reference numeral 1 is a processing head, 2 is an assist gas cylinder (assist gas supply source), and 3 is an assist gas supply pipe (assist gas supply path). 4 is a variable regulator (pressure regulator), 5 is a pressure sensor, 6 is a pressure indicator, 7 is a solenoid valve, and 8 is an amplifier. Laser machine
A machining head 1, an assist gas supply pipe 3 for guiding the assist gas in the assist gas cylinder 2 to the machining head 1, and a variable for adjusting the supply pressure of the assist gas to the machining head 1 provided in the assist gas supply pipe 3. Regulator 4,
The pressure sensor 5 detects the assist gas pressure in the processing head 1.
【０００８】加工ヘッド１は、前記圧力センサ５まで、
内部のアシストガスが配管を通して導かれ、圧力センサ
５でガス圧が正確に計測できるようになっている。ま
た、加工ヘッド１は、電磁弁７が取り付けられ、加工ヘ
ッド１内のアシストガスが、予め設定した以上の圧力に
なった際に、該電磁弁７からアシストガスが排気され
て、加工ヘッド１の内圧を低下させるようになってい
る。The processing head 1 includes the pressure sensor 5 and the like.
The assist gas inside is guided through a pipe, and the gas pressure can be accurately measured by the pressure sensor 5. An electromagnetic valve 7 is attached to the processing head 1, and when the assist gas in the processing head 1 reaches a pressure higher than a preset pressure, the assist gas is exhausted from the electromagnetic valve 7 and the processing head 1 It is designed to reduce the internal pressure of.
【０００９】可変レギュレータ４は、電気制御により、
圧力を数Ｋｇｆ／ｃｍ２の幅で連続的にコントロールで
きる装置であって、アシストガスの供給圧を設定する圧
力指示部６が増幅器８を介して接続され、アシストガス
ボンベ２内のアシストガスを該圧力指示部６で設定され
た圧力で加工ヘッド１に供給するようになっている。ま
た、可変レギュレータ４は、増幅器８を介して圧力セン
サ５と電気的に接続され、圧力センサ５で検出した加工
ヘッド１内のガス圧が、前記圧力指示部６で設定したガ
ス圧と異なる場合、加工ヘッド１へのアシストガスの供
給圧を昇降するようになっている。The variable regulator 4 is electrically controlled to
It is a device capable of continuously controlling the pressure within a width of several Kgf / cm2, and a pressure indicator 6 for setting the supply pressure of the assist gas is connected via an amplifier 8 so that the assist gas in the assist gas cylinder 2 can be controlled by the pressure. The pressure is set by the instruction unit 6 and supplied to the processing head 1. In addition, the variable regulator 4 is electrically connected to the pressure sensor 5 via the amplifier 8, and the gas pressure in the processing head 1 detected by the pressure sensor 5 is different from the gas pressure set by the pressure indicator 6. The supply pressure of the assist gas to the processing head 1 is raised or lowered.
【００１０】以下、本発明のレーザ加工機の作用および
効果を説明する。レーザ加工機は、加工ヘッド１に供給
すべきアシストガスの供給圧を圧力指示部６で設定する
ことにより、可変レギュレータ４がアシストガスボンベ
２内のアシストガスを前記設定した供給圧でアシストガ
ス供給管３に放出し、実際の加工ヘッド１内のガス圧を
圧力センサ５で検出する。そして、圧力センサ５での検
出圧力が圧力指示部６で設定した供給圧と異なる際に
は、可変レギュレータ４がアシストガスの供給圧を調整
して、圧力センサ５での検出圧力を圧力指示部６で設定
した供給圧と一致させる。The operation and effect of the laser processing machine of the present invention will be described below. In the laser processing machine, the pressure regulator 6 sets the supply pressure of the assist gas to be supplied to the processing head 1, so that the variable regulator 4 causes the assist gas in the assist gas cylinder 2 to be supplied at the set supply pressure. 3 and the actual gas pressure in the processing head 1 is detected by the pressure sensor 5. When the pressure detected by the pressure sensor 5 is different from the supply pressure set by the pressure indicator 6, the variable regulator 4 adjusts the supply pressure of the assist gas so that the pressure detected by the pressure sensor 5 is the pressure indicator. Match the supply pressure set in 6.
【００１１】したがって、本発明のレーザ加工機は、可
変レギュレータ４と圧力センサ５とが、圧力指示部６で
設定したアシストガスの供給圧力を保持するフィードバ
ック回路を形成しているので、加工ヘッド１内のアシス
トガス圧力の変化に対応して、可変レギュレータ４がリ
アルタイムにアシストガスの供給圧の調整を行なって、
加工ヘッド１内のアシストガス圧力を常時一定に保持す
ることができる。その結果、切断加工の精度が向上する
ことは勿論、可変レギュレータ４における供給圧力の再
設定の必要がないので、アシストガスの供給圧力の設定
作業の能率が大幅に上昇する。Therefore, in the laser beam machine according to the present invention, the variable regulator 4 and the pressure sensor 5 form a feedback circuit for holding the supply pressure of the assist gas set by the pressure instructing section 6, so that the processing head 1 is processed. The variable regulator 4 adjusts the supply pressure of the assist gas in real time in response to the change of the assist gas pressure in the inside.
The assist gas pressure in the processing head 1 can be constantly kept constant. As a result, the cutting accuracy is improved, and the supply pressure of the variable regulator 4 need not be reset, so that the efficiency of the work for setting the assist gas supply pressure is significantly increased.
【００１２】[0012]
【発明の効果】以上説明したように、本発明のレーザ加
工機によれば、加工ヘッドからレーザビームを照射する
とともにアシストガスを噴出して加工対象物を切断する
レーザ加工機であって、該レーザ加工機のアシストガス
供給源から加工ヘッドにアシストガスを供給するアシス
トガス供給経路と、該アシストガス供給経路に設けられ
アシストガスの供給圧を調整する圧力調整器と、加工ヘ
ッド内のアシストガス圧を検出する圧力センサとを具備
し、圧力調整器は、圧力センサで検出したアシストガス
圧に応じて、アシストガスの供給圧を、加工ヘッドのア
シストガスを所望の圧力に保持するように調整する構成
であることを特徴とするから、圧力調整器と圧力センサ
とが、予め設定したアシストガスの供給圧力を保持する
フィードバック回路を形成しているので、加工ヘッド内
のアシストガス圧力の変化に対応して、圧力調整器がリ
アルタイムにアシストガスの供給圧の調整を行なって、
加工ヘッド内のアシストガス圧力を常時一定に保持する
ことができ、切断加工の精度が向上することは勿論、圧
力調整器における供給圧力の再設定の必要がないので、
アシストガスの供給圧力の設定作業の能率が大幅に上昇
するといった優れた効果を奏する。As described above, according to the laser processing machine of the present invention, the laser beam is emitted from the processing head and the assist gas is ejected to cut the object to be processed. An assist gas supply path for supplying the assist gas from the assist gas supply source of the laser processing machine to the processing head, a pressure regulator provided in the assist gas supply path for adjusting the supply pressure of the assist gas, and an assist gas in the processing head. The pressure regulator is equipped with a pressure sensor that detects the pressure, and the pressure regulator adjusts the assist gas supply pressure so that the assist gas of the machining head is maintained at a desired pressure in accordance with the assist gas pressure detected by the pressure sensor. Therefore, the pressure regulator and the pressure sensor have a feedback circuit that maintains a preset assist gas supply pressure. Since the form, in response to changes in the assist gas pressure in the processing head, the pressure regulator after the adjustment of the supply pressure of the assist gas in real time,
Since the assist gas pressure in the processing head can be kept constant at all times, and the accuracy of cutting processing is improved, it is not necessary to reset the supply pressure in the pressure regulator.
This has an excellent effect that the efficiency of the work of setting the supply pressure of the assist gas is significantly increased.
【図１】本発明に係るレーザ加工機の一例を示す概略構
成図である。FIG. 1 is a schematic configuration diagram showing an example of a laser processing machine according to the present invention.
１ 加工ヘッド ２ アシストガス供給源（アシストガスボンベ） ３ アシストガス供給経路（アシストガス供給管） ４ 圧力調整器（レギュレータ） ５ 圧力センサ 1 Processing head 2 Assist gas supply source (assist gas cylinder) 3 Assist gas supply path (assist gas supply pipe) 4 Pressure regulator (regulator) 5 Pressure sensor
Claims (1)
とともにアシストガスを噴出して加工対象物を切断する
レーザ加工機であって、該レーザ加工機のアシストガス
供給源から加工ヘッドにアシストガスを供給するアシス
トガス供給経路と、該アシストガス供給経路に設けられ
アシストガスの供給圧を調整する圧力調整器と、加工ヘ
ッド内のアシストガス圧を検出する圧力センサとを具備
し、圧力調整器は、圧力センサで検出したアシストガス
圧に応じて、アシストガスの供給圧を、加工ヘッドのア
シストガスを所望の圧力に保持するように調整する構成
であることを特徴とするレーザ加工機。1. A laser processing machine for irradiating a laser beam from a processing head and ejecting an assist gas to cut an object to be processed, the assist gas being supplied from an assist gas supply source of the laser processing machine to the processing head. An assist gas supply path, a pressure adjuster provided in the assist gas supply path for adjusting the supply pressure of the assist gas, and a pressure sensor for detecting the assist gas pressure in the processing head. A laser processing machine having a configuration in which the supply pressure of the assist gas is adjusted so as to maintain the assist gas of the processing head at a desired pressure according to the assist gas pressure detected by the pressure sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23692793A JP3268085B2 (en) | 1993-09-22 | 1993-09-22 | Laser processing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23692793A JP3268085B2 (en) | 1993-09-22 | 1993-09-22 | Laser processing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0788667A true JPH0788667A (en) | 1995-04-04 |
| JP3268085B2 JP3268085B2 (en) | 2002-03-25 |
Family
ID=17007820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23692793A Expired - Lifetime JP3268085B2 (en) | 1993-09-22 | 1993-09-22 | Laser processing machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3268085B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009154189A (en) * | 2007-12-27 | 2009-07-16 | Amada Co Ltd | Method and device for evaluating cutting performance of laser beam machining nozzle, and laser beam cutting machine having device for evaluating cutting performance of laser beam machining nozzle |
| CN102861989A (en) * | 2011-07-07 | 2013-01-09 | 大阳日酸株式会社 | Nitrogen supply apparatus for laser machine |
| CN109702361A (en) * | 2019-03-27 | 2019-05-03 | 佛山市宏石激光技术有限公司 | A kind of laser bevel cutting method and laser cutting machine |
-
1993
- 1993-09-22 JP JP23692793A patent/JP3268085B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009154189A (en) * | 2007-12-27 | 2009-07-16 | Amada Co Ltd | Method and device for evaluating cutting performance of laser beam machining nozzle, and laser beam cutting machine having device for evaluating cutting performance of laser beam machining nozzle |
| CN102861989A (en) * | 2011-07-07 | 2013-01-09 | 大阳日酸株式会社 | Nitrogen supply apparatus for laser machine |
| CN109702361A (en) * | 2019-03-27 | 2019-05-03 | 佛山市宏石激光技术有限公司 | A kind of laser bevel cutting method and laser cutting machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3268085B2 (en) | 2002-03-25 |
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