SE9801780D0 - Method and apparatus for monitoring the status of a protective glass in laser machining - Google Patents

Method and apparatus for monitoring the status of a protective glass in laser machining

Info

Publication number
SE9801780D0
SE9801780D0 SE9801780A SE9801780A SE9801780D0 SE 9801780 D0 SE9801780 D0 SE 9801780D0 SE 9801780 A SE9801780 A SE 9801780A SE 9801780 A SE9801780 A SE 9801780A SE 9801780 D0 SE9801780 D0 SE 9801780D0
Authority
SE
Sweden
Prior art keywords
protective glass
glass plate
detector
laser
machining
Prior art date
Application number
SE9801780A
Other languages
Swedish (sv)
Other versions
SE512097C2 (en
SE9801780L (en
Inventor
Sven-Olov Roos
Per-Arne Torstensson
Original Assignee
Permanova Lasersystem Ab
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 Permanova Lasersystem Ab filed Critical Permanova Lasersystem Ab
Priority to SE9801780A priority Critical patent/SE512097C2/en
Publication of SE9801780D0 publication Critical patent/SE9801780D0/en
Priority to JP2000549415A priority patent/JP2002515341A/en
Priority to EP99925508A priority patent/EP1146986A1/en
Priority to PCT/SE1999/000592 priority patent/WO1999059762A1/en
Publication of SE9801780L publication Critical patent/SE9801780L/en
Publication of SE512097C2 publication Critical patent/SE512097C2/en

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
    • B23K26/70—Auxiliary operations or equipment
    • B23K26/702—Auxiliary equipment
    • B23K26/707—Auxiliary equipment for monitoring laser beam transmission optics
    • 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

Landscapes

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

Abstract

The invention relates to a method and an apparatus for checking the condition with respect to dirt contamination in the form of small smoke particles accumulated on a protective glass plate (3) arranged between the workpiece (2) and the laser optics (1) in a laser machining system and through which protective glass plate the machining laser beam (6) is arranged to pass. A thermal detector (10) is arranged, with a good thermal contact with the mechanical part attaching the protective glass plate in a holder (4), for sensing (measuring) the temperature of said mechanical attachment part. Due to an absorption of the laser beam by the small smoke particles an increased temperature is obtained on the protective glass plate and the mechanical parts that are attaching the protective glass in its holder (4). As soon as the detector signal has reached a certain level it can be indicated that it is time to replace the protective glass plate. The thermal detector (10) is preferably combined with an optical detector (8) sensing the radiation scattered by larger dirt particles collected on the protective glass plate during the machining process.
SE9801780A 1998-05-20 1998-05-20 Method and apparatus for monitoring the status of a protective glass in laser machining SE512097C2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
SE9801780A SE512097C2 (en) 1998-05-20 1998-05-20 Method and apparatus for monitoring the status of a protective glass in laser machining
JP2000549415A JP2002515341A (en) 1998-05-20 1999-04-13 Method and apparatus for checking the condition of protective glass in connection with laser machining
EP99925508A EP1146986A1 (en) 1998-05-20 1999-04-13 A method and an apparatus for checking the condition of a protective glass in connection with laser machining
PCT/SE1999/000592 WO1999059762A1 (en) 1998-05-20 1999-04-13 A method and an apparatus for checking the condition of a protective glass in connection with laser machining

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9801780A SE512097C2 (en) 1998-05-20 1998-05-20 Method and apparatus for monitoring the status of a protective glass in laser machining

Publications (3)

Publication Number Publication Date
SE9801780D0 true SE9801780D0 (en) 1998-05-20
SE9801780L SE9801780L (en) 1999-11-21
SE512097C2 SE512097C2 (en) 2000-01-24

Family

ID=20411390

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9801780A SE512097C2 (en) 1998-05-20 1998-05-20 Method and apparatus for monitoring the status of a protective glass in laser machining

Country Status (4)

Country Link
EP (1) EP1146986A1 (en)
JP (1) JP2002515341A (en)
SE (1) SE512097C2 (en)
WO (1) WO1999059762A1 (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20206255U1 (en) * 2002-04-19 2003-08-28 Thyssen Laser Technik Gmbh Carbon dioxide power laser with zinc selenide lens includes rapid response temperature sensor near lens to produce shutdown signal
EP1362662A1 (en) * 2002-05-08 2003-11-19 Lasag Ag Laser welding head and laser welding apparatus
DE10310854B3 (en) * 2003-03-11 2004-09-30 Erlas Erlanger Lasertechnik Gmbh Method, monitoring device and laser processing system with defect monitoring of an optical component
DE50304140D1 (en) * 2003-06-20 2006-08-17 Trumpf Laser Gmbh & Co Kg Method and laser processing head with a device for monitoring an optical element of a machining head of a machine for the thermal processing of a workpiece
EP1643281A1 (en) * 2004-10-02 2006-04-05 Trumpf Werkzeugmaschinen GmbH + Co. KG Optical element of a laser processing machine and support for the optical element
US20090242526A1 (en) * 2008-03-26 2009-10-01 Electro Scientific Industries, Inc. Laser micromachining through a protective member
EP3148016B1 (en) * 2010-11-23 2018-02-28 IPG Photonics Corporation Laser process head
DE102014205907B4 (en) * 2014-03-31 2020-03-26 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Protection device for protection against laser radiation
JP6097796B2 (en) * 2015-07-09 2017-03-15 アイピージー フォトニクス コーポレーション Method and system for monitoring the output of a high power fiber laser system
CN105665951A (en) * 2016-03-29 2016-06-15 同高先进制造科技（太仓）有限公司 Laser head protection glasses monitoring device based on scattered light and temperature detection and working method
CN105772961A (en) * 2016-03-29 2016-07-20 同高先进制造科技（太仓）有限公司 Laser head protection lens pollution monitoring device based on scattered light detection and working method thereof
CN106927257B (en) * 2017-03-29 2023-04-11 中国科学院西安光学精密机械研究所 Automatic protective glass replacing device of laser fusion target field optical diagnosis equipment
JP7340733B2 (en) * 2017-09-21 2023-09-08 パナソニックＩｐマネジメント株式会社 Laser processing head and laser processing system using it
FR3085205B1 (en) * 2018-08-22 2020-07-24 Livbag Sas LASER WELDER PROTECTIVE GLASS CONTROL DEVICE AND METHOD
KR102175421B1 (en) * 2018-10-28 2020-11-06 네모엔지니어링 주식회사 Laser processing apparatus and laser processing system
CN109759723A (en) * 2019-03-05 2019-05-17 奔腾激光(温州)有限公司 A kind of laser cutting head
EP3978179B1 (en) 2019-06-03 2023-10-04 Panasonic Intellectual Property Management Co., Ltd. Laser processing head and laser processing device provided with same
CN115647621A (en) * 2022-10-14 2023-01-31 深圳市创想三维科技股份有限公司 Detection assembly, laser module, light emitting control method of laser module and laser processing equipment

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0716795B2 (en) * 1988-01-19 1995-03-01 ミヤチテクノス株式会社 Laser emission port protection glass plate dirt detection device
JPH04118193A (en) * 1990-09-04 1992-04-20 Hitachi Constr Mach Co Ltd Device for monitoring protective glass of laser beam machine
DE19605018A1 (en) * 1996-01-31 1997-08-07 Inpro Innovations Gmbh Monitoring protective glass of laser welding optics

Also Published As

Publication number Publication date
EP1146986A1 (en) 2001-10-24
SE512097C2 (en) 2000-01-24
SE9801780L (en) 1999-11-21
JP2002515341A (en) 2002-05-28
WO1999059762A1 (en) 1999-11-25

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