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EP0064247A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Apparatus for producing moulded articles with non spherical surfaces

Assignee: Carl Zeiss SMT GmbH
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Filing: 1982-04-24
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Granted: —
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Expires: 2002-04-24
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Abstract

Abstract Translated from German Formteile mit asphärischen Oberflächen aus thermoplastischem Material werden hergestellt mit Formwerkzeugen (5, 6), deren formteilbegrenzende Flächen sphärisch ausgebildet und elastisch verformbar sind. Durch den Druck des thermoplastischen Materials während des Herstellvorganges werden die sphärischen Flächen derart definiert verformt, daß vorausbestimmbare asphärische Flächen entstehen. Nicht rotations-symmetrische asphärische Flächen werden durch zusätzliche, elastisch gelagerte Hilfsstempel (8) erzeugt, die mit einer Hydraulik (8a) verbunden sind. Molded parts with aspherical surfaces made of thermoplastic material are produced using molds (5, 6), the surfaces of which delimit the molded part are spherical and are elastically deformable. Due to the pressure of the thermoplastic material during the manufacturing process, the spherical surfaces are deformed in a defined manner such that predeterminable aspherical surfaces are created. Non-rotationally symmetrical aspherical surfaces are generated by additional, elastically mounted auxiliary stamps (8) which are connected to a hydraulic system (8a).

Inventors

  • 👤 Albert Dipl.-Ing. Kreuttner

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-09 08:15
CPC Classifications
B; B29; B29D; B29D11/00; B29D11/00009; B29D11/00019; B29C; B29C33/00; B29C33/0011; B29C45/00; B29C45/17; B29C45/26; B29C45/37; B29D11/0048; B29D11/00548; B29D11/00557; B29L; B29L2011/00; B29L2011/0016; Y; Y10; Y10S; Y10S425/00; Y10S425/808

Claims Analysis

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References Cited (Backward Citations)

DE2949951A1 Cited

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