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DE2052512A1 - Material processing laser - Google Patents

Material processing laser

Info

Publication number
DE2052512A1
DE2052512A1 DE19702052512 DE2052512A DE2052512A1 DE 2052512 A1 DE2052512 A1 DE 2052512A1 DE 19702052512 DE19702052512 DE 19702052512 DE 2052512 A DE2052512 A DE 2052512A DE 2052512 A1 DE2052512 A1 DE 2052512A1
Authority
DE
Germany
Prior art keywords
material processing
processing laser
suction devices
laser according
workpiece
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.)
Pending
Application number
DE19702052512
Other languages
German (de)
Inventor
Viktor 8022 Grünwald Baumgartner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens Corp
Original Assignee
Siemens Corp
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 Siemens Corp filed Critical Siemens Corp
Priority to DE19702052512 priority Critical patent/DE2052512A1/en
Publication of DE2052512A1 publication Critical patent/DE2052512A1/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/36Removing material
    • B23K26/38Removing material by boring or cutting
    • B23K26/382Removing material by boring or cutting by boring
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/14Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
    • B23K26/142Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor for the removal of by-products
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/14Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
    • B23K26/1462Nozzles; Features related to nozzles

Landscapes

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

Description

Materialbearbeitungslaser Die Erfindung bezieht sich auf einen Materialbearbeitungslaser zum Herstellen aufwurffreier im wesentlichen zylindrischer Löcher.Material processing laser The invention relates to a material processing laser for making throw-up-free, substantially cylindrical holes.

Laserstrahlen sind bekanntlich kohärente Lichtstrahlen hoher Intensität. Es ist bekannt, daß man mit Hilfe von Laserstrahlen Material bearbeiten, z.B. Löcher herstellen kann. Dabei wird der Laserstrahl auf die Stelle gerichtet, an der das Loch entstehen soll.As is well known, laser beams are coherent light beams of high intensity. It is known that laser beams are used to machine materials such as holes can produce. The laser beam is aimed at the point where the Hole should arise.

Die Erfahrung zeigt jedoch, daß die so hergestellten Löcher meist unrund sind und sowohl an der Eingangsseite als auch an der Durchbruchsseite Aufwürfe aufweisen. Durch einen anfänglichen Aufheizprozeß wird das Material auf Schmelztemperatur gebracht und bei weiterer Absorption von Photonen entstehen in diesem lokal begrenzten Bereich sehr hohe Dampfdrücke und steile Temperaturgradienten; die Schmelze wird an der Wandung nach oben gedrückt, bleibt am Rande liegen oder fließt wieder in den erzeugten Krater zurück. Dadurch entstehen unerwünschte Aufwürfe, unrunde Löcher und mithin auch große Anlaßbereiche.Experience shows, however, that the holes made in this way are mostly are out of round and raised both on the input side and on the breakthrough side exhibit. The material is brought to the melting temperature through an initial heating process brought and with further absorption of photons arise in this locally limited Area of very high vapor pressures and steep temperature gradients; the melt will pressed up on the wall, remains at the edge or flows back into back the created crater. This creates unwanted bulges and non-round holes and therefore also large event areas.

Der Erfindung liegt die Aufgabe zugrunde, mit Hilfe von Lasern Löcher zu erzeugen, die eine möglichst zylindrische Form haben und die an der Eingangsseite und der Iurchbruchsseite das Werkstück plan belassen.The invention is based on the object of making holes with the aid of lasers to produce, which have as cylindrical a shape as possible and which on the input side and leave the workpiece flat on the breakthrough side.

Die Aufgabe wird erfindungsmäßig dadurch gelöst, daß in der Nahe der Bearbeitungsstelle Absaugvorrichtungen vorgesehen sind, die die bei der Bearbeitung entstehenden flüssigen und gasförmigen Produkte abführen.The object is achieved according to the invention in that in the vicinity of the Processing point suction devices are provided, which are used during processing Remove resulting liquid and gaseous products.

Insbesondere muß das Werkstück von unten mit dem Laserstrahl bearbeitet werden, so daß der entstehende heiße Dampf und die entstehende heiße Flüssigkeit des Werkstückmaterials sich in Richtung der Schwerkraft bewegen kann. Auf diese Weise kann vermieden werden, daß das Werkstückmaterial in das Loch hineinläuft und sich an den Wänden absetzt.In particular, the workpiece must be processed from below with the laser beam so that the resulting hot steam and the resulting hot liquid of the workpiece material can move in the direction of gravity. To this Way can be avoided that the workpiece material runs into the hole and settles on the walls.

Vorteilhafterweise sind an der Eingangsseite und an der Durchbruchsseite Absaugvorrichtungen für die flüssigen und gasförmigen Werkstoffbestandteile angebracht. Auf diese Weise können an den beiden Lochenden die sonst entstehenden Aufwürfe vermieden werden.Advantageously, there are on the inlet side and on the breakthrough side Suction devices for the liquid and gaseous material components attached. In this way, the bulges that would otherwise arise at the two hole ends can be avoided will.

Vorzugsweise ist in der Absauganordnung für die aufgeschmolzenen Randbereiche eine Kühlvorrichtung vorgesehen. Auf diese Weise wird vermieden, daß in der Wand neben dem Loch zu viel Material geschmolzen wird.There is preferably in the suction arrangement for the melted edge areas a cooling device is provided. This way it is avoided that in the wall Too much material is being melted next to the hole.

Ein Ausführungsbeispiel der Erfindung ist in der Figur dargestellt und wird im folgenden näher beschrieben.An embodiment of the invention is shown in the figure and is described in more detail below.

Die Figur zeigt einen Laser 1, dessen kohärente Strahlung 2 durch eine besondere Optik 3 auf ein Werkstück 4 fokussiert wird. Durch die intensive Strahlung wird das Werkstück an der betreffenden Stelle geschmolzen. Infolge der Erdanz#ehungskraft läuft flüssiges und gasförmiges Material des Werkstückes 4 nach unten und wird von den Absaugvorrichtungen 5 beseitigt. Im weiteren Verlauf der Bearbeitung des Werkstückes 4 stößt der kegelförmige Strahl immer tiefer in das Werkstück 4 hinein und durchbohrt es schließlich. Auf der anderen Seite der oberen Seite des Werkstückes 4 befinden sich Absaugvorrichtungen 6, die wiederum das gasförmige Material abführen können.The figure shows a laser 1, the coherent radiation 2 through a special optic 3 is focused on a workpiece 4. Because of the intense Radiation melts the workpiece at the relevant point. As a result of Earth's gravitational force is followed by liquid and gaseous material of the workpiece 4 below and is eliminated by the suction devices 5. In the further course of the Machining the workpiece 4, the conical beam pushes deeper and deeper into the Workpiece 4 in and finally pierced it. On the other side of the top On the side of the workpiece 4 there are suction devices 6, which in turn are gaseous Can discharge material.

Auf diese Weise kann schnell ein Loch hergestellt werden, das in seiner Form der Bohrung gleicht, die mit einem Bohrer hergestellt worden ist.In this way, a hole can be quickly made that can be found in his Shape resembles the hole that has been made with a drill.

1 Figur 5 Patentansprüche1 Figure 5 claims

Claims (5)

Patentansprüche 3 Materialbearbeitungslaser zum Herstellen aufwurffreier im wesentlichen zylindrischer Löcher, dadurch g e -k e n n z e i c h n e t , daß in der Nähe der Bearbeitungastelle Absaugvorrichtungen vorgesehen sind, die die bei der Bearbeitung entstehenden flüssigen und gasförmigen Prodt e abführen. Claims 3 material processing laser for producing throw-up free essentially cylindrical holes, characterized in that suction devices are provided in the vicinity of the machining site, which the Discharge liquid and gaseous products generated during processing. 2. Materialbearbeitungslaser nach Anspruch 1, dadurch g e k e n n z e i c h n e t , daß Absaugvorrichtungen an der Eitlgangsseite angeordnet sind. 2. Material processing laser according to claim 1, characterized in that g e k e n n notices that suction devices are located on the canal side. 3. Materialbearbeitungslaser nach Anspruch 1 und 2, dadurch g ek e n n z e i c h n e t * daß weitere Absaugvorrichtungen an der Durchbrucheseite angeordnet sind. 3. Material processing laser according to claim 1 and 2, characterized g ek e n n z e i c h n e t * that further suction devices on the opening side are arranged. 4. Materialbearbeitungslaser nach einem oder mehreren der Ansprüche 1 bis 3, dadurch g e k e n n z e i c h n e t daß der Laserstrahl in vertikaler Richtung entgegengesetzt zr Richtung der Schwerkraft auf das Werkstück gerichtet ist. 4. Material processing laser according to one or more of the claims 1 to 3, characterized in that the laser beam goes in the vertical direction is directed opposite to the direction of gravity on the workpiece. 5. Materialbearbeitungslaser nach einem oder mehreren der Ansprüche 1 bis 4, dadurch g e k e n n z e i c h ne t daß eine Lühlvorrichtung vorgesehen ist, die die Randzone der Bearbeitungsstelle kühlt. 5. Material processing laser according to one or more of the claims 1 to 4, characterized in that a cooling device is provided is that cools the edge zone of the processing point. LeerseiteBlank page
DE19702052512 1970-10-26 1970-10-26 Material processing laser Pending DE2052512A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19702052512 DE2052512A1 (en) 1970-10-26 1970-10-26 Material processing laser

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702052512 DE2052512A1 (en) 1970-10-26 1970-10-26 Material processing laser

Publications (1)

Publication Number Publication Date
DE2052512A1 true DE2052512A1 (en) 1972-04-27

Family

ID=5786192

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19702052512 Pending DE2052512A1 (en) 1970-10-26 1970-10-26 Material processing laser

Country Status (1)

Country Link
DE (1) DE2052512A1 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3411126A1 (en) * 1984-03-26 1985-10-03 BIAS Forschungs- und Entwicklungs-Labor für angewandte Strahltechnik GmbH, 2820 Bremen DEVICE FOR PROCESSING WORKPIECES THROUGH AN ENERGY RAY WITH A HIGH PERFORMANCE DENSITY, IN PARTICULAR A LASER RAY OF A CO (ARROW DOWN) 2 (ARROW DOWN) LASER
FR2709801A1 (en) * 1993-09-08 1995-03-17 Bosch Gmbh Robert Valve with electromagnetic control.
DE10016534A1 (en) * 2000-04-03 2001-10-04 Plm Ab Dust protection for working laser unit, induces longitudinal gas flow towards workpiece and exerts ambient pressure in working region
US6455806B1 (en) 2000-01-14 2002-09-24 Rexam Ab Arrangement for shaping and marking a target
US6476349B1 (en) 1998-04-28 2002-11-05 Rexam Ab Strip guiding device
US6479787B1 (en) 1999-10-05 2002-11-12 Rexam Ab Laser unit and method for engraving articles to be included in cans
US6576871B1 (en) 2000-04-03 2003-06-10 Rexam Ab Method and device for dust protection in a laser processing apparatus
US6872913B1 (en) 2000-01-14 2005-03-29 Rexam Ab Marking of articles to be included in cans
US6926456B1 (en) 2000-01-20 2005-08-09 Rexam Ab Guiding device for a marking arrangement

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3411126A1 (en) * 1984-03-26 1985-10-03 BIAS Forschungs- und Entwicklungs-Labor für angewandte Strahltechnik GmbH, 2820 Bremen DEVICE FOR PROCESSING WORKPIECES THROUGH AN ENERGY RAY WITH A HIGH PERFORMANCE DENSITY, IN PARTICULAR A LASER RAY OF A CO (ARROW DOWN) 2 (ARROW DOWN) LASER
FR2709801A1 (en) * 1993-09-08 1995-03-17 Bosch Gmbh Robert Valve with electromagnetic control.
US6476349B1 (en) 1998-04-28 2002-11-05 Rexam Ab Strip guiding device
US6926487B1 (en) 1998-04-28 2005-08-09 Rexam Ab Method and apparatus for manufacturing marked articles to be included in cans
US6479787B1 (en) 1999-10-05 2002-11-12 Rexam Ab Laser unit and method for engraving articles to be included in cans
US6455806B1 (en) 2000-01-14 2002-09-24 Rexam Ab Arrangement for shaping and marking a target
US6872913B1 (en) 2000-01-14 2005-03-29 Rexam Ab Marking of articles to be included in cans
US6926456B1 (en) 2000-01-20 2005-08-09 Rexam Ab Guiding device for a marking arrangement
DE10016534A1 (en) * 2000-04-03 2001-10-04 Plm Ab Dust protection for working laser unit, induces longitudinal gas flow towards workpiece and exerts ambient pressure in working region
DE10016534C2 (en) * 2000-04-03 2002-11-21 Rexam Ab Malmoe Method and device for dust protection in a laser processing device
US6576871B1 (en) 2000-04-03 2003-06-10 Rexam Ab Method and device for dust protection in a laser processing apparatus

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