Method and device for improving the component quality of objects manufactured by an additive manufacturing process

US11584087B2 · kind B2 · utility

Assignee

• EOS GmbH Electro Optical Systems · DE

Inventors

• Joerg Hamann
• Peter Holfelder · Neufahrn bei Freising, DE
• Ludger Huemmeler · Gauting, DE
• Manuel Walter · Lochau, AT

Key dates

• Filing date: Apr 11, 2019
• Grant date: Feb 21, 2023
• Expiry date: Oct 20, 2039

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P10/25
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

Disclosed is a method of providing control data for an additive manufacturing device. The method includes accessing computer-based model data of at least a portion of the object to be manufactured, generating at least one data model of a region of a building material layer to be selectively solidified for manufacturing the at least one object portion. The data model specifies solidification of the building material, and the end point of the at least one solidification path a set of energy introduction parameter values is specified which generates a reference value for the radiation power per unit area in the radiation impact area of the beam bundle on the building material which is lower than the reference value for the radiation power per unit area at other locations of the solidification path, and providing control data corresponding to the generated at least one data model for generating a control data set for the additive manufacturing device.