DE102013225108A1 - Measuring method and processing device - Google Patents
Measuring method and processing device Download PDFInfo
- Publication number
- DE102013225108A1 DE102013225108A1 DE102013225108.4A DE102013225108A DE102013225108A1 DE 102013225108 A1 DE102013225108 A1 DE 102013225108A1 DE 102013225108 A DE102013225108 A DE 102013225108A DE 102013225108 A1 DE102013225108 A1 DE 102013225108A1
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- Germany
- Prior art keywords
- processing
- measuring
- workpiece
- unit
- machining
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- 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.)
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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
- B23K26/0665—Shaping the laser beam, e.g. by masks or multi-focusing by beam condensation on the workpiece, e.g. for focusing
-
- 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
- B23K26/03—Observing, e.g. monitoring, the workpiece
- B23K26/032—Observing, e.g. monitoring, the workpiece using optical 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
- B23K26/02—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
- B23K26/0643—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms comprising mirrors
-
- 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
-
- 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
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
-
- 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
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
- G01B11/2441—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures using interferometry
Abstract
Die Erfindung betrifft Messverfahren, bei dem ein Messstrahl (24) während einer mittels eines Bearbeitungsstrahls (16) erfolgenden Bearbeitung eines Werkstücks (17) emittiert, zu einem Bearbeitungsort (32) geleitet und anschließend mittels Interferometrie ausgewertet wird. Der Messstrahl (24) wird dabei durch eine Fokussieroptik (18) geleitet, durch die hindurch auch der Bearbeitungsstrahl (16) zum Bearbeitungsort (32) zur Bearbeitung des Werkstücks (17) geleitet wird.The invention relates to measuring methods in which a measuring beam (24) is emitted during processing of a workpiece (17) by means of a machining beam (16), conducted to a processing location (32) and subsequently evaluated by means of interferometry. The measuring beam (24) is guided by focusing optics (18), through which the processing beam (16) is also directed to the processing location (32) for processing the workpiece (17).
Description
Die vorliegende Erfindung betrifft ein Messverfahren zur in situ Überwachung einer mit einer Bearbeitungsvorrichtung mittels eines Bearbeitungsstrahls vorgenommenen Bearbeitung eines Werkstücks sowie die Bearbeitungsvorrichtung selbst. The present invention relates to a measuring method for in situ monitoring of a processing of a workpiece by means of a machining beam, as well as the processing device itself.
Im Stand der Stand der Technik ist es bekannt, Bearbeitungsergebnisse, insbesondere beim Laserstrahlbohren, über eine Voreinstellung der Verfahrensparameter, wie beispielsweise Pulsdauer, Pulsfrequenz, Pulsenergie, Prozessgasart und Prozessdruck, einzustellen. In the state of the art, it is known to set machining results, in particular in laser drilling, by presetting the process parameters, such as pulse duration, pulse frequency, pulse energy, process gas type and process pressure.
Eine Bestimmung des Bearbeitungsstatus während einer Laser-Bearbeitung geht aus der
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein verbessertes Messverfahren zur in situ Überwachung einer Bearbeitung und eine dazu geeignete Bearbeitungsvorrichtung bereitzustellen. The object of the present invention is to provide an improved measuring method for in situ monitoring of a machining and a machining device suitable for this purpose.
Gelöst wird diese Aufgabe mit einem Messverfahren nach Anspruch 1 sowie einer Bearbeitungsvorrichtung nach Anspruch 6. Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen angegeben und in der Beschreibung beschrieben. This object is achieved with a measuring method according to claim 1 and a processing apparatus according to claim 6. Advantageous developments of the invention are specified in the subclaims and described in the description.
Bei dem erfindungsgemäßen Messverfahren wird ein Messstrahl während einer mittels eines Bearbeitungsstrahls erfolgenden Bearbeitung eines Werkstücks emittiert, zu einem Bearbeitungsort geleitet und anschließend mittels Interferometrie ausgewertet. Der Messstrahl wird erfindungsgemäß durch eine Fokussieroptik geleitet, durch die hindurch auch der Bearbeitungsstrahl zum Bearbeitungsort zur Bearbeitung des Werkstücks geleitet wird. In the measuring method according to the invention, a measuring beam is emitted during machining of a workpiece taking place by means of a machining beam, conducted to a processing location and subsequently evaluated by means of interferometry. According to the invention, the measuring beam is passed through a focusing optics, through which the processing beam is also directed to the processing location for processing the workpiece.
Mit dem erfindungsgemäßen Messverfahren kann der Bearbeitungsstatus in situ ermittelt werden. Der Bearbeitungsfortschritt kann somit bestimmt und die Bearbeitung daran angepasst werden. So kann der Bearbeitungslaser beispielsweise rechtzeitig abgeschaltet werden, wenn eine gewünschte Bohrtiefe erreicht ist. With the measuring method according to the invention, the processing status can be determined in situ. The processing progress can thus be determined and the processing adapted to it. For example, the processing laser can be switched off in good time when a desired drilling depth has been reached.
In einer vorteilhaften Ausführung des erfindungsgemäßen Messverfahrens wird der Messstrahl mittels einer Ablenkeinheit abgelenkt und zu der Fokussieroptik geleitet. In an advantageous embodiment of the measuring method according to the invention, the measuring beam is deflected by means of a deflection unit and directed to the focusing optics.
Dadurch kann der Strahlengang des Messstrahls der Position von Messstrahlquelle und Bearbeitungsort angepasst werden. As a result, the beam path of the measuring beam can be adapted to the position of measuring beam source and processing location.
In einer weiteren vorteilhaften Ausführung des erfindungsgemäßen Messverfahrens wird ein Abscannen des Werkstücks dadurch vorgenommen, dass die Ablenkeinheit in einem Ablenkverstellen verstellt wird, wodurch die Ablenkung des Messstrahls variiert wird. In a further advantageous embodiment of the measuring method according to the invention, a scanning of the workpiece is performed by adjusting the deflection unit in a deflection adjustment, whereby the deflection of the measuring beam is varied.
Damit wird der Bearbeitungsort abgescannt. Es ist möglich sowohl die Tiefe als auch die Breite und Länge der Bearbeitung zu ermitteln. Die Geometrie der Bearbeitung und damit der Bearbeitungsstand und Bearbeitungsfortschritt in allen drei Dimensionen können erfasst werden. This scans the processing location. It is possible to determine both the depth and the width and length of the machining. The geometry of the machining and thus the processing status and machining progress in all three dimensions can be recorded.
In einer weiteren vorteilhaften Ausführung des erfindungsgemäßen Messverfahrens wird der Bearbeitungsstrahl in Bearbeitungspulsen emittiert und das Messverfahren in einer Pulspause zwischen zwei der Bearbeitungspulse durchgeführt. In a further advantageous embodiment of the measuring method according to the invention, the processing beam is emitted in processing pulses and the measuring method is carried out in a pulse pause between two of the processing pulses.
Damit wird vermieden, dass Prozessemissionen von der Bearbeitung des Werkstücks die Messung nicht verfälscht oder die Signalauswertung stört. This avoids that process emissions from the machining of the workpiece do not falsify the measurement or disturb the signal evaluation.
In einer weiteren vorteilhaften Ausführung des erfindungsgemäßen Messverfahrens ist die Bearbeitung ein Bohren. In a further advantageous embodiment of the measuring method according to the invention, the machining is a drilling.
Damit kann die Bohrgeometrie in jedem Bearbeitungsstatus überwacht werden, was insbesondere bei sehr schmalen Bohrungen aufwendige Nacharbeiten verhindern kann. Thus, the drilling geometry can be monitored in any processing status, which can prevent costly rework especially for very narrow holes.
Die erfindungsgemäße Bearbeitungsvorrichtung zur Bearbeitung eines Werkstücks mittels eines Bearbeitungsstrahls umfasst eine den Bearbeitungsstrahl zu emittieren ausgebildete Bearbeitungsstrahlquelle sowie einen den Bearbeitungsstrahl umzulenken vermögenden Spiegel sowie eine den Bearbeitungsstrahl zu bündeln ausgebildete Fokussieroptik sowie eine Messeinheit zur Messung der Bearbeitung mittels eines Messstrahls sowie eine mit der Bearbeitungsstrahlquelle und der Messeinheit signalleitend verbundene Kontrolleinheit. Die Messeinheit weist dabei eine den Messstrahl zu emittieren ausgebildete Messstrahlquelle und einen den vom Werkstück reflektierten Messstrahl zu empfangen ausgebildeten Detektor auf. Der Spiegel ist dabei ein dichroitischer Spiegel, der den Bearbeitungsstrahl reflektiert und den Messstrahl transmittiert. Der Messstrahl ist durch den dichroitischen Spiegel und die Fokussieroptik geführt. The processing apparatus according to the invention for processing a workpiece by means of a processing beam comprises a processing beam source designed to emit the processing beam and a wealthy mirror deflecting the processing beam and a focusing optics formed to focus the processing beam and a measuring unit for measuring the processing by means of a measuring beam and one with the processing beam source and the Measuring unit signal-conducting connected control unit. The measuring unit has a measuring beam source designed to emit the measuring beam and a detector designed to receive the measuring beam reflected by the workpiece. The mirror is a dichroic mirror which reflects the processing beam and transmits the measuring beam. The measuring beam is guided by the dichroic mirror and the focusing optics.
Mit dieser Anordnung ist es vorteilhaft ermöglicht das erfindungsgemäße Messverfahren auszuführen und den Bearbeitungsstatus der Bearbeitung in situ zu bestimmen. With this arrangement, it is advantageously possible to carry out the measuring method according to the invention and to determine the processing status of the processing in situ.
In einer vorteilhaften Ausgestaltung der erfindungsgemäßen Bearbeitungsvorrichtung weist die Messeinheit eine Ablenkeinheit zum Ablenken des Messstrahls auf. In an advantageous embodiment of the processing device according to the invention, the Measuring unit on a deflection unit for deflecting the measuring beam.
Damit braucht die Messstrahlquelle nicht direkt auf die Fokussieroptik zielend angeordnet sein. Mehr Gestaltungsfreiheiten sind damit gegeben. Thus, the measuring beam source does not need to be aimed directly at the focusing optics. More design freedom is given.
In einer weiteren vorteilhaften Ausgestaltung der erfindungsgemäßen Bearbeitungsvorrichtung ist die Ablenkeinheit verstellbar. In a further advantageous embodiment of the processing device according to the invention, the deflection unit is adjustable.
Damit ist ein Abscannen des Werkstücks ermöglicht. This allows a scanning of the workpiece.
In einer weiteren vorteilhaften Ausgestaltung der erfindungsgemäßen Bearbeitungsvorrichtung weist die Kontrolleinheit ein Steuerungsmodul, welches ausgebildet ist, den Bearbeitungsstrahl in Bearbeitungspulsen von der Bearbeitungsstrahlquelle emittieren zulassen, und ein Synchronisationsmodul, welches ausgebildet ist, den Messstrahl in einer Pulspause zwischen zwei Bearbeitungspulsen von der Messstrahlquelle emittieren zu lassen, auf. In a further advantageous embodiment of the processing device according to the invention, the control unit has a control module, which is designed to allow the processing beam to emit in processing pulses from the processing beam source, and a synchronization module, which is designed to emit the measuring beam in a pulse pause between two processing pulses from the measuring beam source , on.
Damit ist es ermöglicht, die Messung in Pulspausen durchzuführen. This makes it possible to perform the measurement in pulse pauses.
Ausführungsbeispiele der Erfindung werden anhand der Zeichnung und der nachfolgenden Beschreibung näher erläutert. Die Figur zeigt eine erfindungsgemäße Bearbeitungsvorrichtung während der Ausführung eines erfindungsgemäßen Messverfahrens. Embodiments of the invention will be explained in more detail with reference to the drawing and the description below. The figure shows a processing device according to the invention during the execution of a measuring method according to the invention.
In der Figur ist eine erfindungsgemäße Bearbeitungsvorrichtung
Die Bearbeitungsvorrichtung
Die Bearbeitungsvorrichtung
In der gezeigten Ausgestaltung weist die Bearbeitungsvorrichtung
Der Strahlengang des Bearbeitungsstrahls
Die Messeinheit
Die Messeinheit
Die Bearbeitungsvorrichtung
Die gezeigte Kontrolleinheit
Das Steuerungsmodul
Mittels des Synchronisationsmoduls
Die Bearbeitungsvorrichtung
Bei dem gezeigten Messverfahren wird ein Messstrahl
Der Messstrahl
Der Messstrahl
In der Figur sind der Bearbeitungsstrahl
Obwohl die Erfindung im Detail durch das bevorzugte Ausführungsbeispiel näher illustriert und beschrieben wurde, so ist die Erfindung nicht durch die offenbarten Beispiele eingeschränkt und andere Variationen können vom Fachmann hieraus abgeleitet werden, ohne den Schutzumfang der Erfindung zu verlassen. Although the invention has been further illustrated and described in detail by the preferred embodiment, the invention is not limited by the disclosed examples, and other variations can be derived therefrom by those skilled in the art without departing from the scope of the invention.
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- EP 2479533 A1 [0003, 0003] EP 2479533 A1 [0003, 0003]
Claims (9)
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DE102013225108.4A DE102013225108A1 (en) | 2013-12-06 | 2013-12-06 | Measuring method and processing device |
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DE102013225108.4A DE102013225108A1 (en) | 2013-12-06 | 2013-12-06 | Measuring method and processing device |
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DE102013225108A1 true DE102013225108A1 (en) | 2015-06-11 |
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Cited By (3)
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DE102017114033A1 (en) | 2017-06-23 | 2018-12-27 | Precitec Gmbh & Co. Kg | Device and method for distance measurement for a laser processing system, and laser processing system |
EP3536485A1 (en) * | 2018-03-09 | 2019-09-11 | CL Schutzrechtsverwaltungs GmbH | Apparatus for additively manufacturing three-dimensional objects |
WO2020104101A1 (en) * | 2018-11-22 | 2020-05-28 | Precitec Gmbh & Co. Kg | Method for laser processing, and laser machining system for carrying out the method |
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DE4207169A1 (en) * | 1992-03-06 | 1993-09-09 | Siemens Solar Gmbh | Laser operations on a workpiece with uneven surface - where distances between workpiece and laser are measured during intervals between working pulses |
US20030016353A1 (en) * | 2001-07-17 | 2003-01-23 | Vincent Detalle | Method and apparatus for depth profile analysis by laser induced plasma spectros copy |
EP1977850A1 (en) * | 2007-04-05 | 2008-10-08 | Precitec Optronik GmbH | Processing device and method for material processing |
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DE102010016862A1 (en) * | 2010-05-10 | 2011-11-10 | Precitec Optronik Gmbh | Material processing device with in-situ measurement of the machining distance |
EP2479533A1 (en) | 2011-01-24 | 2012-07-25 | Universita' Degli Studi di Bari | Laser system for ablation monitoring |
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2013
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DE4207169A1 (en) * | 1992-03-06 | 1993-09-09 | Siemens Solar Gmbh | Laser operations on a workpiece with uneven surface - where distances between workpiece and laser are measured during intervals between working pulses |
US20030016353A1 (en) * | 2001-07-17 | 2003-01-23 | Vincent Detalle | Method and apparatus for depth profile analysis by laser induced plasma spectros copy |
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Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102017114033A1 (en) | 2017-06-23 | 2018-12-27 | Precitec Gmbh & Co. Kg | Device and method for distance measurement for a laser processing system, and laser processing system |
WO2018234500A1 (en) | 2017-06-23 | 2018-12-27 | Precitec Gmbh & Co. Kg | Device and method for distance measurement for a laser processing system and laser processing system |
US10422632B2 (en) | 2017-06-23 | 2019-09-24 | Precitec Gmbh & Co. Kg | Device and method for distance measurement for a laser processing system, and a laser processing system |
DE102017114033B4 (en) | 2017-06-23 | 2021-11-25 | Precitec Gmbh & Co. Kg | Device and method for distance measurement for a laser processing system, and laser processing system |
EP3536485A1 (en) * | 2018-03-09 | 2019-09-11 | CL Schutzrechtsverwaltungs GmbH | Apparatus for additively manufacturing three-dimensional objects |
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JP2019155913A (en) * | 2018-03-09 | 2019-09-19 | ツェーエル・シュッツレヒツフェアヴァルトゥングス・ゲゼルシャフト・ミト・べシュレンクテル・ハフツング | Additive manufacturing apparatus of three-dimensional object |
US11072113B2 (en) | 2018-03-09 | 2021-07-27 | Concept Laser Gmbh | Apparatus for additively manufacturing three-dimensional objects |
WO2020104101A1 (en) * | 2018-11-22 | 2020-05-28 | Precitec Gmbh & Co. Kg | Method for laser processing, and laser machining system for carrying out the method |
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