JPS6457994A - Method and device for laser beam processing - Google Patents

Method and device for laser beam processing

Info

Publication number
JPS6457994A
JPS6457994A JP62214862A JP21486287A JPS6457994A JP S6457994 A JPS6457994 A JP S6457994A JP 62214862 A JP62214862 A JP 62214862A JP 21486287 A JP21486287 A JP 21486287A JP S6457994 A JPS6457994 A JP S6457994A
Authority
JP
Japan
Prior art keywords
assist gas
piercing
pressure
work
progression
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
Application number
JP62214862A
Other languages
Japanese (ja)
Other versions
JPH07115222B2 (en
Inventor
Seiichi Hayashi
Masahiro Yamada
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.)
Komatsu Ltd
Original Assignee
Komatsu 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 Komatsu Ltd filed Critical Komatsu Ltd
Priority to JP62214862A priority Critical patent/JPH07115222B2/en
Publication of JPS6457994A publication Critical patent/JPS6457994A/en
Publication of JPH07115222B2 publication Critical patent/JPH07115222B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
    • B23K26/1462—Nozzles; Features related to nozzles
    • B23K26/1464—Supply to, or discharge from, nozzles of media, e.g. gas, powder, wire
    • B23K26/147—Features outside the nozzle for feeding the fluid stream towards the workpiece
    • 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
    • B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor

Landscapes

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

Abstract

PURPOSE:To shorten the time for processing a prepd. hole and to prevent the degradation in product quality by injecting a low-pressure assist gas to a work at the start of piercing and increasing the assist gas gradually on progression of processing, thereby piercing the work. CONSTITUTION:A pressure regulating mechanism 8 which controls the pressure of the assist gas so as to increase the pressure gradually is provided between a nozzle 1 which projects a laser beam to the cutting point of the work 3 while injecting the assist gas toward the work and an assist gas supplying source 4. The assist gas of the low pressure is injected from the nozzle 1 to the work 3 at the start of the piercing and the pressure of the assist gas is gradually increased on progression of the piercing so that the abrupt oxygen melting at the start of the piercing is prevented and the splashing of dross, the damaging of a lens and the operator's danger are eliminated. The pressure of the assist gas is increased on progression of the piercing, by which the piercing time is shortened and the degradation in quality by the formation of the excessively large prepd. hole is prevented.
JP62214862A 1987-08-28 1987-08-28 Laser processing method and laser processing apparatus Expired - Lifetime JPH07115222B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62214862A JPH07115222B2 (en) 1987-08-28 1987-08-28 Laser processing method and laser processing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62214862A JPH07115222B2 (en) 1987-08-28 1987-08-28 Laser processing method and laser processing apparatus

Publications (2)

Publication Number Publication Date
JPS6457994A true JPS6457994A (en) 1989-03-06
JPH07115222B2 JPH07115222B2 (en) 1995-12-13

Family

ID=16662789

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62214862A Expired - Lifetime JPH07115222B2 (en) 1987-08-28 1987-08-28 Laser processing method and laser processing apparatus

Country Status (1)

Country Link
JP (1) JPH07115222B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007136471A (en) * 2005-11-15 2007-06-07 Toyota Motor Corp Drilling method and drilling apparatus
US7294807B2 (en) * 2001-08-08 2007-11-13 Robert Bosch Gmbh Method and device for drilling holes in workpieces by means of laser beams
FR2917313A1 (en) * 2007-06-12 2008-12-19 Snecma Sa Drilling hole on two sides of a metal part e.g. turbine blade using laser beam focused on a zone by a lens, comprises irradiating the zone to be pierced by laser impulsion, and boring the hole on two sides of the part by laser impulsion
US7741579B2 (en) 2005-02-25 2010-06-22 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Flushing lines or cavities of a laser processing machine
US7754999B2 (en) * 2003-05-13 2010-07-13 Hewlett-Packard Development Company, L.P. Laser micromachining and methods of same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60162589A (en) * 1984-01-11 1985-08-24 Mitsubishi Electric Corp Laser cutting device
JPS60203385A (en) * 1984-03-28 1985-10-14 Mitsubishi Electric Corp Laser beam machining machine
JPS61150789A (en) * 1984-12-25 1986-07-09 Komatsu Ltd Laser beam processing method
JPS61289991A (en) * 1985-06-14 1986-12-19 Mitsubishi Electric Corp Laser beam machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60162589A (en) * 1984-01-11 1985-08-24 Mitsubishi Electric Corp Laser cutting device
JPS60203385A (en) * 1984-03-28 1985-10-14 Mitsubishi Electric Corp Laser beam machining machine
JPS61150789A (en) * 1984-12-25 1986-07-09 Komatsu Ltd Laser beam processing method
JPS61289991A (en) * 1985-06-14 1986-12-19 Mitsubishi Electric Corp Laser beam machine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7294807B2 (en) * 2001-08-08 2007-11-13 Robert Bosch Gmbh Method and device for drilling holes in workpieces by means of laser beams
US7754999B2 (en) * 2003-05-13 2010-07-13 Hewlett-Packard Development Company, L.P. Laser micromachining and methods of same
US7741579B2 (en) 2005-02-25 2010-06-22 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Flushing lines or cavities of a laser processing machine
JP2007136471A (en) * 2005-11-15 2007-06-07 Toyota Motor Corp Drilling method and drilling apparatus
FR2917313A1 (en) * 2007-06-12 2008-12-19 Snecma Sa Drilling hole on two sides of a metal part e.g. turbine blade using laser beam focused on a zone by a lens, comprises irradiating the zone to be pierced by laser impulsion, and boring the hole on two sides of the part by laser impulsion

Also Published As

Publication number Publication date
JPH07115222B2 (en) 1995-12-13

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