Patent · US Active

Positioning of a building platform in a powder bed device for additive manufacturing

US11084213B2 · kind B2 · utility

2Cited by

0References

19Claims

0Family size

Assignee

TRUMPF LASER- UND SYSTEMTECHNIK GMBH · DE

Inventors

Markus Pieger · Stuttgart, DE
Damien Buchbinder · Gerlingen, DE
Frederik Schaal · Fellbach, DE

Key dates

Filing date	May 8, 2019
Grant date	Aug 10, 2021
Priority date	—
Expiry date	Feb 4, 2040

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P10/25
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A method for producing a control signal for positioning a holder of a solid freeform fabrication device that is height-adjustable relative to a working surface, comprising arranging a structural platform on the holder; capturing a plurality of images of the working surface in the region of the holder, an image-specific height of the holder being adjusted before the detection of one of the plurality of images, and depending on the change of direction in the height, a powder layer is applied or removed; determining a powder boundary line between a powder-free region and a powder-covered region of the structural platform for at least two of the plurality of images, captured for differently adjusted image-specific heights of the holder, and producing a control signal for positioning the holder on the basis of the at least two powder boundary lines. The holder can be aligned according to the control signal.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.