DE102011005775B4 - Detector and method for detecting alignment of a laser beam in a laser processing machine and laser processing machine - Google Patents
Detector and method for detecting alignment of a laser beam in a laser processing machine and laser processing machine Download PDFInfo
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- DE102011005775B4 DE102011005775B4 DE102011005775A DE102011005775A DE102011005775B4 DE 102011005775 B4 DE102011005775 B4 DE 102011005775B4 DE 102011005775 A DE102011005775 A DE 102011005775A DE 102011005775 A DE102011005775 A DE 102011005775A DE 102011005775 B4 DE102011005775 B4 DE 102011005775B4
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- detector
- laser beam
- laser
- processing machine
- axis
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- 238000012545 processing Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims description 10
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- 238000010521 absorption reaction Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 238000003698 laser cutting Methods 0.000 description 4
- 238000003754 machining Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
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- 238000007664 blowing Methods 0.000 description 1
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- 230000000694 effects Effects 0.000 description 1
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- 230000006870 function Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
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- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 235000013980 iron oxide Nutrition 0.000 description 1
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- 238000012360 testing method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B11/27—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
- G01B11/272—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes using photoelectric detection means
-
- 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
-
- 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
- B23K26/705—Beam measuring device
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- General Physics & Mathematics (AREA)
- Laser Beam Processing (AREA)
Abstract
Ein Detektor (10) zum Erfassen einer Ausrichtung eines Laserstrahls (5) in einer Laserbearbeitungsmaschine (1) weist eine Mehrzahl von Detektorelementen (11, 12, 13, 14) auf, um die Ausrichtung des Laserstrahls (5) zu erfassen. Die Detektorelemente (11, 12, 13, 14) bilden eine Öffnung (16) des Detektors (10), durch die der Laserstrahl (5) durchtritt, um den Laserstrahl (5) zu formen.A detector (10) for detecting an alignment of a laser beam (5) in a laser processing machine (1) has a plurality of detector elements (11, 12, 13, 14) for detecting the alignment of the laser beam (5). The detector elements (11, 12, 13, 14) form an opening (16) of the detector (10) through which the laser beam (5) passes to form the laser beam (5).
Description
Die Erfindung betrifft einen Detektor und ein Verfahren zum Erfassen einer Ausrichtung eines Laserstrahls in einer Laserbearbeitungsmaschine und insbesondere einen Detektor zum Erfassen einer Ausrichtung des Laserstrahls, der den Laserstrahl formt, und ein Verfahren zum Erfassen der Ausrichtung des Laserstrahls, wobei der Laserstrahl geformt wird.The invention relates to a detector and a method for detecting an alignment of a laser beam in a laser processing machine, and more particularly to a detector for detecting an orientation of the laser beam forming the laser beam and a method for detecting the alignment of the laser beam, wherein the laser beam is formed.
Um einen Bearbeitungsprozess in einer Laserbearbeitungsmaschine optimal auszuführen, muss der Laserstrahl bezüglich einer Fokussieroptik auf einem vorbestimmten Strahlweg abgestrahlt werden.In order to perform a machining process in a laser processing machine optimally, the laser beam must be emitted with respect to a focusing optics on a predetermined beam path.
Es ist bekannt, die Ausrichtung eines Laserstrahls in einer 2D-Laserschneidmaschine so zu ermitteln, dass sogenannte „Tapeshots” durchgeführt werden, in denen der Bediener den Laserstrahl kurz zündet, wobei auf einem Teststreifen, der nach der Fokussieroptik angeordnet ist, ein Einbrand erzeugt wird. Anhand der Lage des Einbrands wird dann auf die Ausrichtung des Laserstrahls geschlossen. Die Ausrichtung wird dann manuell korrigiert, und zwar entweder innerhalb der Strahlführung durch Verkippen von Umlenkspiegeln oder extern durch Verstellen der Düsenposition. Dieses Verfahren ist sehr aufwändig und während eines Bearbeitungsvorgangs der Laserbearbeitungsmaschine nicht möglich.It is known to determine the alignment of a laser beam in a 2D laser cutting machine so that so-called "tape shots" are performed, in which the operator ignites the laser beam briefly, wherein on a test strip, which is arranged after the focusing optics, a burn-in is generated , On the basis of the position of the Einbrands is then closed to the orientation of the laser beam. The alignment is then corrected manually, either within the beam guide by tilting deflecting mirrors or externally by adjusting the nozzle position. This method is very complex and not possible during a machining operation of the laser processing machine.
Aus der
In der
In der
Dokument
Diese Vorrichtungen weisen den Nachteil auf, dass zwar eine Abweichung erfasst wird, jedoch die Bearbeitung durch den Laserstrahl nicht optimal erfolgt, solange die Abweichung besteht.These devices have the disadvantage that, although a deviation is detected, but the processing by the laser beam is not optimal, as long as the deviation exists.
Daraus ergibt sich die Aufgabe, eine permanente Überwachung der Ausrichtung des Laserstrahls durchzuführen, ohne dass sich die Bearbeitungsbedingungen bei einer Abweichung des Laserstrahls von dem Sollweg verschlechtern.This results in the task of performing a permanent monitoring of the alignment of the laser beam, without the processing conditions deteriorate in a deviation of the laser beam from the desired path.
Die Aufgabe wird durch eine Vorrichtung gemäß Anspruch 1 und ein Verfahren gemäß Anspruch 11 gelöst. Eine Laserbearbeitungsmaschine mit einer erfindungsgemäßen Vorrichtung ist in Anspruch 7 beansprucht.The object is achieved by a device according to claim 1 and a method according to
Der erfindungsgemäße Detektor ergibt neben einer Erfassung einer Ausrichtung eines Laserstrahls den vorteilhaften Effekt, dass ein Laserstrahl, der nicht optimal ausgerichtet ist, durch die strahlformende Eigenschaft des Detektors so beschnitten wird, dass er optimal auf eine Fokussieroptik auftreffen kann. Weiterhin ist es nicht erforderlich, zusätzlich Bauteile als Blende vorzusehen, da die Detektorelemente als Blende wirken.The detector according to the invention, in addition to detecting an alignment of a laser beam, has the advantageous effect that a laser beam which is not optimally aligned is trimmed by the beam-forming property of the detector in such a way that it can optimally impinge on a focusing optics. Furthermore, it is not necessary to additionally provide components as a diaphragm, since the detector elements act as a diaphragm.
Die Erfindung wird anhand von Ausführungsbeispielen unter Bezugnahme auf die beigefügten Figuren beschrieben.The invention will be described by means of embodiments with reference to the accompanying figures.
Insbesondere zeigt:In particular:
Im Betrieb muss üblicherweise vor dem tatsächlichen Schneidvorgang des Werkstücks
Beim Schneiden des Werkstücks
In dem Laserbearbeitungskopf
Die Öffnung
In
Die Detektorelemente
Die Vertiefungen
Die Detektorelemente
In
Am Detektor
Außerdem sind am Detektor
Eine thermische Isolierung der Detektorelemente
Im Betrieb ist der Detektor
Wie oben bereits ausgeführt, wirken die Detektorelemente
Eine Veränderung der Ausrichtung des Laserstrahls
Bei einer Abweichung von dem vorbestimmten Strahlweg des Laserstrahls
Durch die ständige Erfassung der Temperaturänderungen und damit der Ausrichtung des Laserstrahls
Optional ist der Detektor
Als eine weitere Option ist der Detektor
In einer alternativen Ausführungsform erfolgt die Bestimmung der Temperatur der Detektorelemente
Claims (13)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011005775A DE102011005775B4 (en) | 2011-03-18 | 2011-03-18 | Detector and method for detecting alignment of a laser beam in a laser processing machine and laser processing machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011005775A DE102011005775B4 (en) | 2011-03-18 | 2011-03-18 | Detector and method for detecting alignment of a laser beam in a laser processing machine and laser processing machine |
Publications (2)
Publication Number | Publication Date |
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DE102011005775A1 DE102011005775A1 (en) | 2012-09-20 |
DE102011005775B4 true DE102011005775B4 (en) | 2012-11-15 |
Family
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DE102011005775A Expired - Fee Related DE102011005775B4 (en) | 2011-03-18 | 2011-03-18 | Detector and method for detecting alignment of a laser beam in a laser processing machine and laser processing machine |
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DE (1) | DE102011005775B4 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015172816A1 (en) | 2014-05-13 | 2015-11-19 | Trumpf Laser- Und Systemtechnik Gmbh | Device for monitoring the orientation of a laser beam and euv radiation-generating device comprising same |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN114543986A (en) * | 2022-03-07 | 2022-05-27 | 英特尔产品(成都)有限公司 | Light barrier device |
CN116393857B (en) * | 2023-06-09 | 2023-08-15 | 常州特尔玛科技股份有限公司 | Device and method for detecting focus centering of handheld laser welding gun |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6170776A (en) * | 1984-09-13 | 1986-04-11 | Mitsubishi Electric Corp | Laser device |
US4675501A (en) * | 1983-10-29 | 1987-06-23 | Trumpf Gmbh & Co. | Laser apparatus with novel beam aligning means and method of laser processing of workpieces using same |
EP0304664B1 (en) * | 1987-08-28 | 1991-11-27 | Westinghouse Electric Corporation | Detector for aligning high power lasers |
EP0863390A1 (en) * | 1997-03-07 | 1998-09-09 | CISE S.p.A. | "Device for the detection of optical parameters of a laser beam". |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62218912A (en) | 1986-03-20 | 1987-09-26 | Toyoda Mach Works Ltd | Device for detecting drift of laser beam axis |
DE3840278A1 (en) | 1988-11-30 | 1990-05-31 | Diehl Gmbh & Co | DEVICE FOR DETECTING A LASER BEAM |
-
2011
- 2011-03-18 DE DE102011005775A patent/DE102011005775B4/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4675501A (en) * | 1983-10-29 | 1987-06-23 | Trumpf Gmbh & Co. | Laser apparatus with novel beam aligning means and method of laser processing of workpieces using same |
JPS6170776A (en) * | 1984-09-13 | 1986-04-11 | Mitsubishi Electric Corp | Laser device |
EP0304664B1 (en) * | 1987-08-28 | 1991-11-27 | Westinghouse Electric Corporation | Detector for aligning high power lasers |
EP0863390A1 (en) * | 1997-03-07 | 1998-09-09 | CISE S.p.A. | "Device for the detection of optical parameters of a laser beam". |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015172816A1 (en) | 2014-05-13 | 2015-11-19 | Trumpf Laser- Und Systemtechnik Gmbh | Device for monitoring the orientation of a laser beam and euv radiation-generating device comprising same |
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DE102011005775A1 (en) | 2012-09-20 |
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Effective date: 20130216 |
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