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Hannover Messe 2003: Gepresste Gläser mit höchster Präzision

02.04.2003


Das Fraunhofer-Institut für Produktionstechnologie IPT stellt auf der HANNOVER MESSE 2003 vom 7. bis 12. April 2003 ein neues Verfahren zum Präzisionsblankpressen optischer Komponenten aus anorganischen Gläsern vor. Auf einem Gemeinschaftsstand mit der IVAM NRW e. V. (Interessengemeinschaft zur Verbreitung von Anwendungen der Mikrostrukturtechniken) zeigt das Fraunhofer IPT in Halle 6, Stand C22, verschiedene strukturierte Glasoptiken, die mit der Abformtechnologie am Institut hergestellt wurden.



Während die klassische Fertigungskette zur direkten Herstellung hochpräziser optischer Komponenten stets die beiden Arbeitsschritte des Schleifens und des Polierens verlangte, lassen sich solche Optiken mittels Präzisionsblankpressen in einem Arbeitsgang anfertigen. Das am Fraunhofer IPT eingesetzte Verfahren verwendet dazu wiedererwärmte Glasrohlinge, die im zähplastischen Zustand unter Druck umgeformt werden.

Bereits heute fertigt das Aachener Institut auf diese Weise komplexe Geometrien (Freiformflächen) und hochwertige strukturierte Optiken mit Strukturgrößen im Mikrometerbereich. Künftige Einsatzfelder solcher Präzisionsoptiken sind beispielsweise die Mikrooptik oder die Mikrofluidik.


Das Präzisionsblankpressen mit nur einem einzigen Werkzeug spart aufwändige Nacharbeiten sowie umweltschädigende Zusatzstoffe wie Poliersuspensionen und Kühlschmiermittel. Die kostengünstige Produktion auch kleiner und mittlerer Stückzahlen macht das Verfahren somit besonders für den europäischen Markt interessant.

Ihr Ansprechpartner
Herr Dipl.-Ing. Guido Pongs
Fraunhofer-Institut für
Produktionstechnologie IPT
Steinbachstraße 17
52074 Aachen
Telefon: 02 41/89 04-4 02
Fax: 02 41/89 04-1 98
E-Mail: g.pongs@ipt.fraunhofer.de

Susanne Krause | alfa
Further information:
http://www.ipt.fraunhofer.de/cms.php?id=963

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