DE102015206004A1 - Apparatus and method for forming a long pulse laser and method for making a shaped hole - Google Patents
Apparatus and method for forming a long pulse laser and method for making a shaped hole Download PDFInfo
- Publication number
- DE102015206004A1 DE102015206004A1 DE102015206004.7A DE102015206004A DE102015206004A1 DE 102015206004 A1 DE102015206004 A1 DE 102015206004A1 DE 102015206004 A DE102015206004 A DE 102015206004A DE 102015206004 A1 DE102015206004 A1 DE 102015206004A1
- Authority
- DE
- Germany
- Prior art keywords
- diaphragm
- laser beam
- laser
- hole
- shape
- 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.)
- Withdrawn
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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
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
- B23K26/066—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms by using masks
-
- 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
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/062—Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam
- B23K26/0622—Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam by shaping pulses
-
- 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
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
- B23K26/382—Removing material by boring or cutting by boring
- B23K26/384—Removing material by boring or cutting by boring of specially shaped holes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/005—Optical devices external to the laser cavity, specially adapted for lasers, e.g. for homogenisation of the beam or for manipulating laser pulses, e.g. pulse shaping
Abstract
Durch die Beeinflussung eines Laserstrahls (9) in eine gewünschte Form eines herzustellenden Lochs wird die Laserbearbeitung von Bauteilen erheblich vereinfacht.By influencing a laser beam (9) into a desired shape of a hole to be produced, the laser processing of components is considerably simplified.
Description
Die Erfindung betrifft eine Vorrichtung, mit der ein Langpulslaser beeinflusst wird und ein entsprechendes Verfahren, um geformte Bohrungen herzustellen. The invention relates to a device with which a long-pulse laser is influenced and a corresponding method for producing shaped bores.
Turbinenschaufeln erhalten aufwändige mehrlagige Beschichtungssystemen aus Korrosionsschutzschichten und Wärmedämmschichten. Die Wärmedämmschicht besteht zumeist aus Keramik, die über atmosphärisches Plasmaspritzen aufgetragen wird. Durch das gesamte Beschichtungssystem wird zusätzlich eine Vielzahl von Kühlluftbohrungen mittels Lasertechnologie eingebracht. Diese Kühlluftbohren müssen, um eine möglichst effiziente Filmkühlung zu erzielen, speziell geformt sein. Turbine blades receive complex multi-layer coating systems consisting of anticorrosive coatings and thermal barrier coatings. The thermal barrier coating is usually made of ceramic, which is applied by atmospheric plasma spraying. The entire coating system additionally introduces a large number of cooling air holes using laser technology. These cooling air drills must be specially shaped to achieve the most efficient film cooling possible.
Zurzeit werden die Formbohrungen über einen zweistufigen Prozess erzeugt. In einem ersten Schritt wird ein zylindrischer Anteil mit einem Pulslaser und Pulsdauern im ms-Bereich hergestellt. Die Austrittsöffnung auf dem Zylinder wird in einem zweiten Schritt mit einem Kurzpulslaser mit Pulsdauern im ns-Bereich über eine Abtragsprozedur erzeugt. At present, the forming holes are produced by a two-stage process. In a first step, a cylindrical portion is produced with a pulse laser and pulse durations in the ms range. The outlet opening on the cylinder is generated in a second step with a short pulse laser with pulse durations in the ns range via a Abtragsprozedur.
Aufgabe der Erfindung ist es, oben genanntes Problem zu lösen. The object of the invention is to solve the above-mentioned problem.
In dieser Erfindung wird ein Verfahren vorgestellt, mit dem die Formung der Austrittsöffnungen mit dem Laser einfacher erzeugt werden können. In this invention, a method is presented, with which the formation of the outlet openings can be generated with the laser easier.
Die Aufgabe wird gelöst durch eine Vorrichtung gemäß Anspruch 1 und ein Verfahren gemäß Anspruch 2. The object is achieved by a device according to claim 1 and a method according to claim 2.
In den jeweiligen Unteransprüchen sind weitere vorteilhafte Maßnahmen aufgelistet, die beliebig miteinander kombiniert werden können, um weitere Vorteile zu erzielen. In the respective subclaims further advantageous measures are listed, which can be combined with each other in order to achieve further advantages.
Die Figuren und die Beschreibung stellen nur Ausführungsbeispiele der Erfindung dar. The figures and the description represent only embodiments of the invention.
Es zeigt It shows
Ein Laserstrahl eines Langpulslasers im ms-Bereich wird durch eine geeignete Blende im Strahlengang geformt. Um ein Abbild der Blende auf ein Werkstück fokussieren zu können, muss eine Blende in einer Strahltaille eines ausgeweiteten Laserstrahles positioniert werden. Eine solche Strahltaille befindet sich bei den derzeit eingesetzten Lasersystemen auf einem Auskoppelspiegel eines Lasers. Da im ausgeweiteten Laserstrahl die Rayleihlänge lang ist, ist es ausreichend, die Blende nahe am Auskoppelspiegel zu positionieren. Die auf dieser Blende vorliegende Intensitätsverteilung wird dann bei der Fokussierung, insbesondere mittels Teleskopabbildung, auf das Werkstück abgebildet und erzeugt dort einen Abtrag in Form der Blende. A laser beam of a long-pulse laser in the ms range is formed by a suitable aperture in the beam path. In order to focus an image of the diaphragm on a workpiece, a diaphragm must be positioned in a beam waist of an expanded laser beam. Such a beam waist is located in the currently used laser systems on a Auskoppelspiegel a laser. Since the Rayleihlänge is long in the expanded laser beam, it is sufficient to position the aperture close to the Auskoppelspiegel. The intensity distribution present on this diaphragm is then imaged on the workpiece during focusing, in particular by means of telescopic imaging, where it produces a removal in the form of the diaphragm.
Vorzugsweise ist hinter dem Auskoppelspiegel
Über eine optionale Umlenkungsvorrichtung wie ein Spiegel
Hier ist der Querschnitt
Dieser Querschnitt kann trapenzförmig
Ein weiterer Querschnitt
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015206004.7A DE102015206004A1 (en) | 2015-04-02 | 2015-04-02 | Apparatus and method for forming a long pulse laser and method for making a shaped hole |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015206004.7A DE102015206004A1 (en) | 2015-04-02 | 2015-04-02 | Apparatus and method for forming a long pulse laser and method for making a shaped hole |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102015206004A1 true DE102015206004A1 (en) | 2016-10-06 |
Family
ID=56937359
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102015206004.7A Withdrawn DE102015206004A1 (en) | 2015-04-02 | 2015-04-02 | Apparatus and method for forming a long pulse laser and method for making a shaped hole |
Country Status (1)
Country | Link |
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DE (1) | DE102015206004A1 (en) |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3440388A (en) * | 1966-04-04 | 1969-04-22 | Monsanto Co | Method for machining with laser beam |
JPS5639190A (en) * | 1979-09-07 | 1981-04-14 | Matsushita Electric Ind Co Ltd | Laser processing machine |
DE3431230A1 (en) * | 1983-12-29 | 1985-07-11 | Toshiba Ceramics Co., Ltd., Tokio/Tokyo | METHOD AND DEVICE FOR PROCESSING A CERAMIC ELEMENT |
DE29609788U1 (en) * | 1996-06-03 | 1996-08-14 | Baasel Carl Lasertech | Laser material processing device for processing, e.g. Welding, a workpiece surface |
US5683600A (en) * | 1993-03-17 | 1997-11-04 | General Electric Company | Gas turbine engine component with compound cooling holes and method for making the same |
US5739502A (en) * | 1983-12-27 | 1998-04-14 | General Electric Company | Laser intensity redistribution |
US6329632B1 (en) * | 1998-07-30 | 2001-12-11 | Societe Nationale d'Etude et de Construction de Moteurs d'Aviation “SNECMA” | Method and device for machining holes or shapes of varying profile using an excimer laser |
DE69133266T2 (en) * | 1990-10-11 | 2003-11-27 | Winston Harry Sa | Process for producing an extrusion die insert |
DE102011000144A1 (en) * | 2010-01-29 | 2011-08-04 | General Electric Company, N.Y. | Process and system for creating shaped air holes |
-
2015
- 2015-04-02 DE DE102015206004.7A patent/DE102015206004A1/en not_active Withdrawn
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3440388A (en) * | 1966-04-04 | 1969-04-22 | Monsanto Co | Method for machining with laser beam |
JPS5639190A (en) * | 1979-09-07 | 1981-04-14 | Matsushita Electric Ind Co Ltd | Laser processing machine |
US5739502A (en) * | 1983-12-27 | 1998-04-14 | General Electric Company | Laser intensity redistribution |
DE3431230A1 (en) * | 1983-12-29 | 1985-07-11 | Toshiba Ceramics Co., Ltd., Tokio/Tokyo | METHOD AND DEVICE FOR PROCESSING A CERAMIC ELEMENT |
DE69133266T2 (en) * | 1990-10-11 | 2003-11-27 | Winston Harry Sa | Process for producing an extrusion die insert |
US5683600A (en) * | 1993-03-17 | 1997-11-04 | General Electric Company | Gas turbine engine component with compound cooling holes and method for making the same |
DE29609788U1 (en) * | 1996-06-03 | 1996-08-14 | Baasel Carl Lasertech | Laser material processing device for processing, e.g. Welding, a workpiece surface |
US6329632B1 (en) * | 1998-07-30 | 2001-12-11 | Societe Nationale d'Etude et de Construction de Moteurs d'Aviation “SNECMA” | Method and device for machining holes or shapes of varying profile using an excimer laser |
DE102011000144A1 (en) * | 2010-01-29 | 2011-08-04 | General Electric Company, N.Y. | Process and system for creating shaped air holes |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R163 | Identified publications notified | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |