WO1990010962A1 - Laser a commande numerique - Google Patents

Laser a commande numerique Download PDF

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Publication number
WO1990010962A1
WO1990010962A1 PCT/JP1990/000307 JP9000307W WO9010962A1 WO 1990010962 A1 WO1990010962 A1 WO 1990010962A1 JP 9000307 W JP9000307 W JP 9000307W WO 9010962 A1 WO9010962 A1 WO 9010962A1
Authority
WO
WIPO (PCT)
Prior art keywords
laser
laser output
output
power
output efficiency
Prior art date
Application number
PCT/JP1990/000307
Other languages
English (en)
Japanese (ja)
Inventor
Kazuhiro Suzuki
Nobuaki Iehisa
Original Assignee
Fanuc Ltd
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 Fanuc Ltd filed Critical Fanuc Ltd
Publication of WO1990010962A1 publication Critical patent/WO1990010962A1/fr

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Classifications

    • 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
    • G05B19/406—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 monitoring or safety
    • G05B19/4063—Monitoring general control system
    • 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
    • B23K26/70—Auxiliary operations or equipment
    • B23K26/702—Auxiliary equipment
    • B23K26/705—Beam measuring device

Definitions

  • the present invention relates to an NC laser device in which a numerical control device (CNC) and a laser oscillator are combined, and more particularly to an NC laser device having a maintenance display function for optical components.
  • NC laser device which numerical control (CNC) device and combines the laser oscillator performing laser machining such as metal, Ru gas laser oscillator of C ⁇ 2 gas laser or the like capable of obtaining high output is used with high efficiency.
  • a gas laser oscillator performs laser oscillation and constantly circulates a high-temperature laser gas through a cooler by a blower such as a root port.
  • the lubricating oil component mixes into the laser gas and contaminates the optical components such as the rear mirror, output mirror and folding mirror, and the output decreases over time. Bring. Therefore, conventionally, the operator measures the operation time and cleans the optical components at regular intervals.
  • the degree of pollution changes depending on the operating conditions, that is, the value of the oscillation output and the oscillation time, and is not determined solely by the operation time alone. For this reason, this is not done when cleaning should really be done, resulting in reduced laser output. -Deterioration of the processing mode and the processing performance may be reduced. Also, if you keep using the dirty optical components as they are, the dirt absorbs the laser beam and heats up, and the optical components themselves may be damaged and cannot be recovered by cleaning.
  • the present invention has been made in view of such a point, and an object of the present invention is to provide an NC laser device having a maintenance display function of an optical component.
  • an injection power measuring unit for measuring an injection power to the laser oscillator, an output measuring unit for measuring a laser output, and the injection power.
  • Efficiency calculating means for calculating laser output efficiency from the laser output; andwarning means for displaying an optical component cleaning instruction on a display screen when the laser output efficiency is reduced beyond a predetermined allowable fluctuation range.
  • FIG. 1 shows the configuration of an NC laser device according to an embodiment of the present invention. Block diagram
  • FIG. 2 is a flowchart illustrating a process of displaying an optical component according to an embodiment of the present invention.
  • FIG. 1 is a block diagram showing the configuration of an NC laser device according to one embodiment of the present invention.
  • a processor 1 controls the operation of the entire NC laser apparatus based on a machining program (not shown).
  • the output control circuit 2 has a built-in DZA converter and converts the output command value output from the processor 1 into a current command value and outputs it.
  • the laser power supply 3 After rectifying the commercial power supply, the laser power supply 3 performs a switching operation to generate a high-frequency voltage, and supplies a high-frequency current corresponding to the current command value to the discharge tube 4.
  • a laser gas 19 is circulated inside the discharge tube 4, and when a high-frequency current is supplied from the laser power supply 3, a discharge occurs to excite the laser gas 19.
  • the rear mirror 5 is a mirror made of germanium (Ge) with a reflectivity of 99.5%
  • the output mirror 6 is a mirror made of zinc selenium (ZnSe) with a reflectivity of 65%.
  • a Fabry-Bore-type resonator is formed, amplifies 10.6 / m light emitted from the excited laser gas molecules, and outputs a part of the light from the output mirror 6 as laser light 7 and outputs it to the outside .
  • the output laser beam 7 changes its direction with a bender mirror 8 when a shutter 23 a, which will be described later, is open, and is condensed to a spot of 0.2 mm or less by a condenser lens 9 to work 17 The surface is irradiated.
  • the memory 10 is a RAM for storing data to be used temporarily, such as a laser output efficiency described later.
  • non-volatile memory for storing machining programs and various parameters, and R ⁇ ⁇ M for storing system programs, but these are omitted in this figure.
  • the position control circuit 11 controls the rotation of the servomotor 13 via the servo pump 12 in accordance with the command of the processor 1, and the position of the table 16 is controlled by the ball screw 14 and the nut 15. Control the movement and control the position of work 17. Note that only one axis is shown in the figure, and the other axes are omitted.
  • the display device 18 a CRT or a liquid crystal display device or the like is used.
  • a root port ⁇ is used for the blower 20 to circulate the laser gas 19 through the coolers 21 a and 21 b.
  • the cooler 21a is a cooler for cooling the laser gas 19, which has been heated to a high temperature by performing laser oscillation
  • the cooler 21b is a cooler for removing compression heat generated by the blower 20. It is.
  • the shutter control circuit 22 opens and closes the shutter 23 a based on a command from the processor 1.
  • the shutter 23a is made of a copper plate or an aluminum plate with a gold-plated surface, and when closed, reflects the laser beam output from the output mirror 6 and absorbs it into the beam absorber 23b. Let it.
  • the shutter 23 a is opened, the work 17 is irradiated with the laser beam 7.
  • the power sensor 24 is composed of a thermoelectric or photoelectric conversion element or the like, inputs the laser light output through a part of the rear mirror 5, and measures the output power of the laser light 7.
  • 0 converter 2 5 Converts the output of the power sensor 24 into a digital value and inputs it to the processor 1 as the laser output monitor value Fa.
  • the power measuring device 26 measures the output current and the output voltage of the laser power supply 3 to obtain an injection power monitor value P i, and inputs it to the processor 1.

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)
  • Lasers (AREA)
  • Laser Beam Processing (AREA)

Abstract

Laser à commande numérique pour l'usinage de pièces métalliques, présentant une fonction d'indication d'informations de maintenance des partie optiques, et composé d'un appareil de commande numérique (CNC) et d'un oscillateur laser combinés. Un instrument de mesure (26) de puissance électrique mesure la puissance électrique (Pi) fournie aux oscillateurs laser (4, 5, 6). En outre, un capteur de puissance (24) mesure la puissance d'émission laser (Pa). On calcule le rendement de l'émission laser à partir de la puissance électrique fournie (Pi) et de la puissance d'émission laser (Pa). Lorsque la valeur du rendement de l'émission laser devient inférieure à une plage de variations tolérables de consigne, une instruction requérant le nettoyage des parties optiques est visualisée sur un écran d'affichage. Lorsque la valeur du rendement de l'émission laser devient inférieure à une plage de variations tolérables de consigne, on considère que les parties optiques ont subi une contamination critique et on indique ce fait à l'opérateur par l'intermédiaire du dispositif d'affichage.
PCT/JP1990/000307 1989-03-15 1990-03-08 Laser a commande numerique WO1990010962A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1062795A JPH02241071A (ja) 1989-03-15 1989-03-15 Ｎｃレーザ装置
JP1/62795 1989-03-15

Publications (1)

Publication Number Publication Date
WO1990010962A1 true WO1990010962A1 (fr) 1990-09-20

Family

ID=13210642

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1990/000307 WO1990010962A1 (fr) 1989-03-15 1990-03-08 Laser a commande numerique

Country Status (2)

Country Link
JP (1) JPH02241071A (fr)
WO (1) WO1990010962A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0789431A3 (fr) * 1996-02-12 1998-05-20 Cymer, Inc. Système de contrÔle de la stratégie de maintenance pour lasers à décharge de gaz
EP0997224A1 (fr) * 1998-10-29 2000-05-03 Miyachi Technos Corporation Dispositif d'usinage laser
EP1150401A3 (fr) * 2000-04-25 2005-07-13 Gigaphoton Inc. Système de gestion d'un dispositif laser
CN108746999A (zh) * 2018-05-21 2018-11-06 广汽本田汽车有限公司 一种激光头聚焦透镜保护镜片表面洁净度的监测方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61133681A (ja) * 1984-12-04 1986-06-20 Amada Co Ltd 気体レ−ザ光出力制御装置のモニタ−装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55146993A (en) * 1979-05-02 1980-11-15 Mitsubishi Electric Corp Laser device
JPH02143577A (ja) * 1988-11-25 1990-06-01 Mitsubishi Electric Corp レーザ発振器の監視装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61133681A (ja) * 1984-12-04 1986-06-20 Amada Co Ltd 気体レ−ザ光出力制御装置のモニタ−装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0789431A3 (fr) * 1996-02-12 1998-05-20 Cymer, Inc. Système de contrÔle de la stratégie de maintenance pour lasers à décharge de gaz
EP0997224A1 (fr) * 1998-10-29 2000-05-03 Miyachi Technos Corporation Dispositif d'usinage laser
EP1150401A3 (fr) * 2000-04-25 2005-07-13 Gigaphoton Inc. Système de gestion d'un dispositif laser
CN108746999A (zh) * 2018-05-21 2018-11-06 广汽本田汽车有限公司 一种激光头聚焦透镜保护镜片表面洁净度的监测方法

Also Published As

Publication number Publication date
JPH02241071A (ja) 1990-09-25

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