JPS60221188A - Laser beam processing machine - Google Patents

Laser beam processing machine

Info

Publication number
JPS60221188A
JPS60221188A JP59075793A JP7579384A JPS60221188A JP S60221188 A JPS60221188 A JP S60221188A JP 59075793 A JP59075793 A JP 59075793A JP 7579384 A JP7579384 A JP 7579384A JP S60221188 A JPS60221188 A JP S60221188A
Authority
JP
Japan
Prior art keywords
laser output
speed
axis
laser
processing machine
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
Application number
JP59075793A
Other languages
Japanese (ja)
Inventor
Mikio Mori
美喜男 森
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP59075793A priority Critical patent/JPS60221188A/en
Publication of JPS60221188A publication Critical patent/JPS60221188A/en
Pending legal-status Critical Current

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
    • B23K26/08—Devices involving relative movement between laser beam and workpiece
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/416—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by control of velocity, acceleration or deceleration
    • G05B19/4163—Adaptive control of feed or cutting velocity

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Human Computer Interaction (AREA)
  • Manufacturing & Machinery (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Laser Beam Processing (AREA)

Abstract

PURPOSE:To provide a titled processing machine which improves processing accuracy in a rectangular part, etc. in laser beam processing under NC control of laser output and feed speed by changing the laser output to follow up the detected feed speed so as to maintain the specified laser output per unit speed. CONSTITUTION:Laser beam processing is executed by an NC control device 5 of the processing machine which controls automatically the X-Y axis traveling of a laser output device 6 and a machine body 7. The feed speed of the X-Y axis travel is detected by a detector 8 and is controlled to maintain the specified laser output per unit speed by the device 5, by which the processing accuracy in the rectangular part, etc. of the work is improved and the work is made into a satisfactory shape.

Description

【発明の詳細な説明】 〔発明の技術分野〕 本発明は、レーザ出力を加工の送り速度の変化に対応し
て出力制御したレーザ加工機に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a laser processing machine in which laser output is controlled in response to changes in machining feed rate.

〔従来技術〕[Prior art]

第１図は従来のＸＹの２軸回時ＮＣ制御のレーザ加工機
における送シ速度とレーザ出力の関係を示した線図であ
る。図において（１）はＹ軸の送り速度、（２）はＸ軸
の送シ速度、（３）はレーザ出力を示している。このよ
うに従来の加工ではあらかじめレーザ出力と加工速度を
入力情報としてＮＧ制御装置（図示せず）に入力し、そ
の入力情報をＮＣ制御装置中の演算制御部で解析し、レ
ーザ出力装置（図示せず）にレーザ出力が一定値になる
ように出力指令を与えると共に、加工速度をＸ軸、Ｙ軸
の送シ速度に分解して、それぞれの速度指定値をＸ−Ｙ
テーブルのサーボ機構に与える。その場合レーザは一定
出力で照射されるのに対し、Ｙ軸の送り速度は過渡状態
としての加速時間ａ１　を経て定常の送シ速度に達する
。次に直角の切断部に到達するとＹ軸の送りを停止して
からＸ軸を送る。そのためＹ軸の送υ速度が定常速度か
ら零になるまでの減速時間すと、Ｘ軸の定常速度に達す
る一加速時間ａ、の過渡状態が生じる。したがって、レ
ーザで切断する直角部では、レーザ出力が一定でおるか
らレーザ出力過剰となる。FIG. 1 is a diagram showing the relationship between feed speed and laser output in a conventional XY two-axis rotating NC-controlled laser processing machine. In the figure, (1) shows the feed speed on the Y axis, (2) shows the feed speed on the X axis, and (3) shows the laser output. In this way, in conventional machining, the laser output and machining speed are input in advance to the NG control device (not shown) as input information, and the input information is analyzed by the calculation control section in the NC control device. In addition to giving an output command so that the laser output becomes a constant value (not shown), the processing speed is divided into X-axis and Y-axis feed speeds, and each speed specified value is
feed to the servo mechanism of the table. In that case, the laser is irradiated with a constant output, while the Y-axis feed rate reaches the steady feed rate after an acceleration time a1 as a transient state. Next, when the right-angled cutting part is reached, the Y-axis feed is stopped and the X-axis feed is then fed. Therefore, when the Y-axis feed velocity takes a deceleration time from a steady speed to zero, a transient state occurs that takes one acceleration time a to reach the X-axis steady speed. Therefore, at the right angle portion to be cut by the laser, the laser output remains constant, resulting in excessive laser output.

このように直角の切断部は入熱過剰で溶解されて、直角
部等の加工精反が劣るという欠点があった。As described above, the right-angled cut portions are melted due to excessive heat input, resulting in poor machining quality at the right-angled portions.

〔発明の概要］ 本発明はかかる欠点を改善する目的でなされたもので、
送り速度の過渡状態における送シ速度の変化を検出し、
それに応じてレーザ出力を制御するようにしたレーザ加
工機を提供するものである。[Summary of the Invention] The present invention has been made for the purpose of improving such drawbacks.
Detects changes in feed speed during feed speed transient conditions,
The present invention provides a laser processing machine that controls laser output accordingly.

〔発明の実施例〕[Embodiments of the invention]

第２図は本発明の一実施例を示すブロック図であり、（
４）は入力装置、（５）はＮＣ制御装置、（６）はレー
ザ出力装置、（７）はＸ−Ｙテーブル等の機械本体、（
６）は検出器でおる。FIG. 2 is a block diagram showing one embodiment of the present invention, (
4) is an input device, (5) is an NC control device, (6) is a laser output device, (7) is a machine body such as an X-Y table, (
6) is detected by a detector.

上記のように構成したレーザ加工機における加工は次の
動作による。入力情報は入力装置（４）を通じて入力し
、ＮＣ制御装置（５）からＸ−ＹテーブルのＹ軸に起動
指令が出され、Ｙ軸は加速時間を径て定常速度で送られ
る。レーザの照射位置が直角の切断部に到達すると、検
出器（８）で直角部の位置を検出し、ＮＣ制御装置（５
）よシ指令を出してＹ軸の送りを停止させる。これによ
り軸は減速時間を径て送り速度零〇となる。次いで検出
器（８）でＹ軸の停止を確認してＮＣ制御装置（５）か
らＸ軸に起動指令が出され、加速時間を径て定常速度で
送られる。Processing in the laser processing machine configured as described above is performed by the following operations. Input information is input through the input device (4), a start command is issued from the NC control device (5) to the Y axis of the X-Y table, and the Y axis is sent at a steady speed after an acceleration time. When the laser irradiation position reaches the right-angled cutting part, the detector (8) detects the position of the right-angled part, and the NC control device (5) detects the position of the right-angled part.
) Issue the Y-axis command to stop the Y-axis feed. As a result, the shaft reaches a feed rate of zero after deceleration time. Next, the detector (8) confirms that the Y-axis has stopped, and the NC control device (5) issues a start command to the X-axis, which is then sent at a steady speed after an acceleration time.

第３図はこのように動作した場合の時間と送シ速度の関
係を示したもので６　り　、　（９）はＹ軸の送り速度
、α１はＸ軸の送り速度を示したものである。FIG. 3 shows the relationship between time and feed speed when operating in this way, where (9) shows the feed speed of the Y axis and α1 shows the feed speed of the X axis.

またα優はそれぞれの送シ速度を合成した合成速度を示
したものである。一方レーザ出力については、ＮＣ制御
装置（５）が検出器（８）からの情報によシ０埠に示す
ように合成速度の過渡状態に対応してレーザ出力を減増
して変化させるっ なお上記実施例では、Ｙ軸からＸ軸への切換を検出器（
８）の位置確認によって行なったが、あらかじめ過渡時
間を入力情報としてＮＣ制御装置（５）に入力し、過渡
時間によりレーザ出力を変化させても本発明を同様に達
成しうる。Further, α Yu indicates a composite speed that is a combination of the respective feeding speeds. On the other hand, regarding the laser output, the NC control device (5) changes the laser output by decreasing or increasing the laser output according to the transient state of the composite speed as shown in the figure 0, based on the information from the detector (8). In the example, switching from the Y-axis to the X-axis is performed using a detector (
8), the present invention can be similarly achieved by inputting the transient time as input information to the NC control device (5) in advance and changing the laser output depending on the transient time.

また上記実施例では直角部切断について説明したが合成
速度が急激に変化する切断の場合、または６軸以上の送
シにおいても同様に本発明の目的を達成しうる。In addition, although the above embodiment describes cutting at right angles, the object of the present invention can be achieved in the same way in cutting where the composite speed changes rapidly or in feeding with six or more axes.

さらに本発明においては、ＸＹ軸の送りの切換によって
送り速度が零となった点でレーザ出力を零とする等送り
速度の速度単位当シのレーザ出力を厳密に比例して高精
度の切断が可能となる。Furthermore, in the present invention, the laser output is strictly proportional to the speed unit of the equal feed rate, with the laser output being zero at the point where the feed rate becomes zero by switching the XY-axis feed, to achieve high-precision cutting. It becomes possible.

〔発明の効果〕〔Effect of the invention〕

本発明は以上説明したとおり、送り速度の過渡時間に対
応してレーザ出力が制御されるので、直角部等の加工精
度が向上し、優れた加工物が得られる効果がおる。As explained above, in the present invention, since the laser output is controlled in accordance with the transient time of the feed speed, the machining accuracy of right angle portions, etc. is improved, and an excellent workpiece can be obtained.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は従来のレーザ加工機の送υ速度とレーザ出力の
関係を示す線図、第２図は本発明の一実施例を示すブロ
ック図、第６図は本発明の送シ速度とレーザ出力の関係
を示す線図である。 図において（４）は入力装置、（５）はＮＣ制御装置、
（６）はレーザ出力装置、（７）は機械本体、（８）は
検出器、（９）は、Ｘ軸送り速度、ｃｌｌ）はＸ軸送り
速度、αめは合成速度、（２）はレーザ出力である。 なお各図中同一符号または相当部分を示すものとする。 代理人　弁理士　木　村　三　朗 路間 亀２図Fig. 1 is a diagram showing the relationship between feed speed and laser output of a conventional laser processing machine, Fig. 2 is a block diagram showing an embodiment of the present invention, and Fig. 6 is a diagram showing the relationship between feed speed and laser output of a conventional laser processing machine. FIG. 3 is a diagram showing the relationship between outputs. In the figure, (4) is an input device, (5) is an NC control device,
(6) is the laser output device, (7) is the machine body, (8) is the detector, (9) is the X-axis feed speed, cll) is the X-axis feed speed, α is the composite speed, (2) is This is laser output. Note that the same symbols or corresponding parts are indicated in each figure. Agent Patent Attorney Sanro Kimura Roma Turtle 2

Claims (2)

【特許請求の範囲】[Claims] （１）ＮＣ制御のレーザ加工機において、送シ速度の変
化に対応してレーザ出力を制御する手段を有するレーザ
加工機。(1) An NC-controlled laser processing machine having means for controlling laser output in response to changes in feed speed. （２）制御する手段がＸ−Ｙ軸の送シ装置の速度変化に
追従して、単位速度当シのレーザ出力が一定になる゛よ
うにした特許請求の範囲第１項記載のレーザ刀ロエ郭隻
。(2) The laser knife according to claim 1, wherein the controlling means follows the speed change of the X-Y axis feeding device so that the laser output per unit speed is constant. Guo ship.
JP59075793A 1984-04-17 1984-04-17 Laser beam processing machine Pending JPS60221188A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59075793A JPS60221188A (en) 1984-04-17 1984-04-17 Laser beam processing machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59075793A JPS60221188A (en) 1984-04-17 1984-04-17 Laser beam processing machine

Publications (1)

Publication Number Publication Date
JPS60221188A true JPS60221188A (en) 1985-11-05

Family

ID=13586439

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59075793A Pending JPS60221188A (en) 1984-04-17 1984-04-17 Laser beam processing machine

Country Status (1)

Country Link
JP (1) JPS60221188A (en)

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