Method for the manufacture of a molding as well as a sensor unit for the application thereof

US7847212B2 · kind B2 · utility

Assignee

• TRUMPF Werkzeugmaschinen GmbH + Co. KG · DE

Inventors

• Bernd Renz · Vöhringen, DE
• Johannes Bauer · Ergoldsbach, DE
• Stefan Braun · Blankenloch, DE
• Nicole Weller · Ditzingen, DE

Key dates

• Filing date: May 31, 2006
• Grant date: Dec 7, 2010
• Expiry date: Oct 1, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P10/25
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The invention relates to a method for the manufacture of a molding through generative processing methods, in particular through selective laser melting, wherein a model of a molding is built from a powder material according to CAD data, wherein an application unit is used to apply a powder layer and the powder layer applied is fixed to a layer arranged there under or a base plate by means of radiation, characterized in that prior to applying a first layer onto a build platform or a base plate, a sensor assembly having a sensor level which is located in relation to the levelling level of a levelling assembly for the applied powder layer is allocated to the build platform or the base plate, the build platform or the base plate is moved in relation to the sensor assembly until the sensor assembly emits a signal for stopping the build platform to a drive in an intermediate position, and starting from the intermediate position, the build platform or the base plate is moved by a distance to adjust the layer thickness of the first powder layer and is positioned in a starting position.