Adaptive closed-loop control of additive manufacturing for producing a workpiece

US11975481B2 · kind B2 · utility

Assignee

• Carl Zeiss Industrielle Messtechnik GmbH · DE

Inventors

• Marcin B. Bauza · Charlotte, US
• Diana SPENGLER · Aalen, DE
• Christoph Graf Vom Hagen · Oakland, US
• Claus Hermannstaedter · Göppingen, DE
• Michael Totzeck · Schwäbisch Gmünd, DE
• Robert Zarnetta · Jena, DE
• Markus Birkhold · Aalen, DE

Key dates

• Filing date: Oct 23, 2020
• Grant date: May 7, 2024
• Expiry date: May 7, 2041

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B33Y40/20
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A method and an arrangement for producing a workpiece using additive manufacturing techniques involve pre-process, in-process and post-process measurement in order to determine individual characteristics of one or more workpiece layers. In particular, dimensional and/or geometrical characteristics of a workpiece layer are measured before the next workpiece layer is produced. Advantageously, production parameters are controlled in response to individual material characteristics determined prior to the production process. Also advantageously, measurement results are fed back into a production process in order to increase accuracy, reliability, repeatability and precision of the production process.