JPS57159286A - Laser working device - Google Patents

Laser working device

Info

Publication number
JPS57159286A
JPS57159286A JP56044810A JP4481081A JPS57159286A JP S57159286 A JPS57159286 A JP S57159286A JP 56044810 A JP56044810 A JP 56044810A JP 4481081 A JP4481081 A JP 4481081A JP S57159286 A JPS57159286 A JP S57159286A
Authority
JP
Japan
Prior art keywords
brightness
working head
condenser
work
plasma
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
JP56044810A
Other languages
Japanese (ja)
Inventor
Susumu Hoshinouchi
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 JP56044810A priority Critical patent/JPS57159286A/en
Publication of JPS57159286A publication Critical patent/JPS57159286A/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
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/04—Automatically aligning, aiming or focusing the laser beam, e.g. using the back-scattered light
    • 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
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/04—Automatically aligning, aiming or focusing the laser beam, e.g. using the back-scattered light
    • B23K26/046—Automatically focusing the laser beam

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Laser Beam Processing (AREA)

Abstract

PURPOSE:To automate focusing of a laser beam and to improve its accuracy in a laser working device by measuring the brightness of plasma generated on the surface of a material to be worked. CONSTITUTION:A laser beam 2 is converged by a condenser 4 and irradiated on the surface of a work 6 and generates plasma that has brightness proportionate to output density of the beam. When the brightness of plasma is measured by a photo-sensor 12 and a brightness measuring device 11 while moving a working head 5 along Z-axis by a working head driving mechanism 9, the brightness becomes a maximum when the distance between the lens and the work becomes equal to the focal length of the condenser 4. Detecting signals from the brightness measuring device 11 and a position reading device 10 of the working head 5 are inputted to a control device 13, and inputted to a working head driving mechanism 9 after operating the position of the working head 3 on the Z-axis. The position of the condenser 4 housed in the working head 5 is set automatically to make the distance between the lens and the work equal to the focal length of the condenser 4.
JP56044810A 1981-03-27 1981-03-27 Laser working device Pending JPS57159286A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56044810A JPS57159286A (en) 1981-03-27 1981-03-27 Laser working device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56044810A JPS57159286A (en) 1981-03-27 1981-03-27 Laser working device

Publications (1)

Publication Number Publication Date
JPS57159286A true JPS57159286A (en) 1982-10-01

Family

ID=12701777

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56044810A Pending JPS57159286A (en) 1981-03-27 1981-03-27 Laser working device

Country Status (1)

Country Link
JP (1) JPS57159286A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2560696A1 (en) * 1984-03-02 1985-09-06 Fiat Ricerche METHOD AND DEVICE FOR CONTROLLING WELDING OPERATIONS BY ANALYZING THE INTENSITY OF LIGHT PRODUCED DURING WELDING
JPS611494A (en) * 1984-05-22 1986-01-07 プリマ　インダストリ　エス・ピ−・エ− Focus converging head for cutter by laser-beam
JP2013141683A (en) * 2012-01-10 2013-07-22 Disco Corp Condensing spot position detecting method of laser beam machining apparatus
CN108723585A (en) * 2018-07-03 2018-11-02 中机数控科技（福建）有限公司 A kind of focus adjustment method of laser cutting machine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5274197A (en) * 1975-12-17 1977-06-21 Hitachi Ltd Laser working machine
JPS53121295A (en) * 1977-03-30 1978-10-23 Hitachi Ltd Laser machining equipment

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5274197A (en) * 1975-12-17 1977-06-21 Hitachi Ltd Laser working machine
JPS53121295A (en) * 1977-03-30 1978-10-23 Hitachi Ltd Laser machining equipment

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2560696A1 (en) * 1984-03-02 1985-09-06 Fiat Ricerche METHOD AND DEVICE FOR CONTROLLING WELDING OPERATIONS BY ANALYZING THE INTENSITY OF LIGHT PRODUCED DURING WELDING
JPS611494A (en) * 1984-05-22 1986-01-07 プリマ　インダストリ　エス・ピ−・エ− Focus converging head for cutter by laser-beam
JP2013141683A (en) * 2012-01-10 2013-07-22 Disco Corp Condensing spot position detecting method of laser beam machining apparatus
CN108723585A (en) * 2018-07-03 2018-11-02 中机数控科技（福建）有限公司 A kind of focus adjustment method of laser cutting machine

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