[특허]Laser beam welding method

Laser beam welding method 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B23K-026/20
출원번호	UP-0486298 (2002-08-07)
등록번호	US-7790999 (2010-09-27)
우선권정보	DE-101 38 651(2001-08-07)
국제출원번호	PCT/EP2002/008848 (2002-08-07)
§371/§102 date	20040601 (20040601)
국제공개번호	WO03/013779 (2003-02-20)
발명자 / 주소	Olowinsky, Alexander Kramer, Thorsten Gillner, Arnold
출원인 / 주소	Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V.
대리인 / 주소	Greenblum & Bernstein, P.L.C.
인용정보	피인용 횟수 : 0 인용 특허 : 23

초록 ▼

A method of producing a welding seam with a single laser pulse, the laser pulse and the work piece being moved relative to each other at a high velocity. This results in the length of the welding seam formed being primarily the product of pulse duration of the laser pulse and the relative velocity of work piece and laser pulse. The invention also relates to a method in which the work piece moved at high velocity relative to the laser beam is subjected along the welding seam to be formed to repeated applications of a single laser pulse. In that case the length of the welding seam is defined principally of the product of pulse duration of the laser pulse and the relative velocity of the work piece and laser pulse divided by the number of applications.

대표청구항 ▼

What is claimed is: 1. A method of laser beam welding of a work piece, comprising: moving a laser beam and a work piece relative to each other at a velocity v, producing a welding seam by a single laser pulse of pulse duration TH having a length l primarily defined determined by a product of the velocity v and the pulse duration TH, wherein the product of velocity v and pulse duration TH is greater than a width of the welding seam bo on the work piece by at least a factor of 10. 2. The method of claim 1, wherein the welded workpiece comprises components of precision and micro system technology. 3. A method of laser welding of a work piece, comprising: moving a laser beam and a work piece relative to each other by velocity v, forming a welding seam by repeating a number of applications of a single laser pulse of pulse duration TH over a weld seam area, the welding seam having a length l relative to a welding feed direction that is primarily determined by a product of velocity v and pulse duration TH divided by the number of applications, wherein the product of velocity v and pulse duration TH is greater than a width bo of the welding seam on the work piece relative to the welding feed direction by at least by factor of 10 divided by the number of applications. 4. The method of claim 3, wherein the welded workpiece comprises components of precision and micro system technology. 5. The method of claim 3, characterized by the fact that the power of the laser pulse is changed over time. 6. The method of claim 5, characterized by the fact that a detector detects characteristic radiation from the welding site and that during processing the power of the laser is adjusted as a function of the radiation detected by the detector. 7. The method of claim 6, characterized by the fact that several welding seams are provided on a work piece. 8. The method of claim 7, characterized by the fact that the work piece and the laser beam execute a linear movement and/or a rotational movement relative to each other. 9. The method of claim 8, characterized by the fact that the relative movement between the work piece and the laser beam is controlled as a function of a desired position of the laser beam impinging on the work piece detected by an evaluation unit. 10. The method of claim 9, characterized by the fact that the relative movement between work piece and laser beam is controlled as a function of an instant impingement position of the laser beam on the work piece detected by an evaluation unit. 11. The method of claim 9, characterized by the fact that the relative movement between work piece and laser radiation is achieved by movement of the laser radiation. 12. The method of claim 3, characterized by the fact the welding seam is formed in an atmosphere of protective gas. 13. The method of claim 3, characterized by the fact that the workpiece comprises watch components are being welded. 14. The method of claim 3, characterized by the fact that the workpiece comprises components of fuel feed devices for combustion engines or plug connections. 15. The method of claim 3, characterized by the fact that the workpiece comprises foil capacitors.

이 특허에 인용된 특허 (23)

Kautz Allan D. (Naperville IL), Continuous laser beam FTM mounting for CRT.
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Schreiber Christopher M. (Newport Beach CA) Crumly Wiliam R. (Anaheim CA) Hanley Robert B. (Santa Ana CA), Interconnection of opposite sides of a circuit board.
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Islam M. U. (Orleans CAX) McGregor Gavin (Gloucester CAX) Campbell G. (Gloucester CAX), Laser rough and finish machining of hard materials.
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Jones Marshall G. (Scotia NY), Laser welding aluminum to copper.
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Britnell James W.,CAX, Laser welding apparatus employing a tilting mechanism and seam follower.
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Nishio Masahiro (Toyota JPX) Yasumatsu Satoshi (Nagoya JPX) Nakamura Hisanori (Toyota JPX) Kobayashi Hiroaki (Okazaki JPX) Hisano Hirohiko (Toyota JPX), Laser welding method.
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Masaharu Nakamori JP; Katsunori Okubo JP; Tadahisa Masatani JP; Masashi Yokoyama JP; Hiroaki Miyata JP; Yukinori Kaneda JP; Toshiaki Okada JP; Mitsunori Takekawa JP; Shigeo Kimura JP; Manabu, Metal support for exhaust gas purifying catalyst.
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Sharp Charles M. (Mount Arlington NJ), Method and apparatus for pulsed high energy density welding.
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Fuerschbach Phillip W. ; Mahoney A. Roderick ; Milewski John O, Method for laser welding a fin and a tube.
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Thiebaut Bernard (Peyrins FRX) Duthoo Dominique (Romans FRX) Germanaz Jean J. (Romans FRX) Angilbert Bernard (Crepol FRX), Method for manufacturing grids for a nuclear fuel assembly.
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Coyle ; Jr. Richard J. (Lawrenceville NJ) Mracek Jaroslav (Trenton NJ), Method for welding relatively small parts.
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Mombo-Caristan Jean C. (Troy MI), Method of high speed high power welding.
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Morris James R. (Houston TX), Non-reflective surgical instruments.
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Pressley Robert J. (Cupertino CA), Optical beam homogenizer.
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Tomohiro Takase JP, Power supply unit for solid-state laser, solid state laser, and laser beam generator.
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Roychowdhury Suranjan ; Pinchuk Leonard ; Hofmann Eugen,CHX ; Hankh Susanne,CHX ; O'Connor Michael G. ; Raeder-Devens Jennifer E. ; Baden Jeannine B. ; Klima Daniel J., Process for fabricating a prosthesis.
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Heim Helmut (Membach BEX), Process for smoothing the eye of a needle and needle made thereby.
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Alexander Yuri Usenko ; William Ned Carr, Separation process for silicon-on-insulator wafer fabrication.
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Pernicka John C. (Fort Collins CO) Benson David K. (Golden CO) Tracy C. Edwin (Golden CO), Simultaneous laser cutting and welding of metal foil to edge of a plate.
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Jones Stephen M. ; Campbell Arthur A. ; Pennala Jeffrey L., Technique for laser welding dissimilar metals.
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Herchenbach, Wolfgang; Nischwitz, Dieter, Watch strap with a catch, particularly articulated strap.
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Dennis Bulgatz, Weld joint design for an armature/ball assembly for a fuel injector.
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Funk Gunter (Stuttgart DEX), Workpiece processing arrangement.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
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저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

연합인증

Laser beam welding method 원문보기

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Laser beam welding method 원문보기

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