US 11,986,995 B2
Methods for the additive manufacture of components in layers, and corresponding computer program products
Uwe Huber, Ingersheim (DE); Johannes Bauer, Illingen (DE); Michael Thielmann, Vaihingen an der Enz (DE); Joachim Wagner, Stuttgart (DE); Jürgen Ortmann, Attendorn (DE); Matthias Allenberg-Rabe, Stuttgart (DE); Detlef Breitling, Leonberg (DE); Damien Buchbinder, Berlin (DE); and Florian Krist, Stuttgart (DE)
Assigned to TRUMPF Laser- und Systemtechnik GmbH, Ditzingen (DE)
Filed by TRUMPF Laser- und Systemtechnik GmbH, Ditzingen (DE)
Filed on May 9, 2019, as Appl. No. 16/407,389.
Application 16/407,389 is a continuation of application No. PCT/EP2017/078118, filed on Nov. 3, 2017.
Claims priority of application No. 102016222261.9 (DE), filed on Nov. 14, 2016.
Prior Publication US 2019/0263065 A1, Aug. 29, 2019
Int. Cl. B29C 64/153 (2017.01); B22F 10/28 (2021.01); B22F 10/36 (2021.01); B22F 10/366 (2021.01); B22F 12/45 (2021.01); B28B 1/00 (2006.01); B28B 17/00 (2006.01); B29C 64/268 (2017.01); B29C 64/277 (2017.01); B29C 64/393 (2017.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01); B33Y 50/02 (2015.01); B22F 12/49 (2021.01)
CPC B29C 64/153 (2017.08) [B22F 10/28 (2021.01); B22F 10/36 (2021.01); B22F 10/366 (2021.01); B22F 12/45 (2021.01); B28B 1/001 (2013.01); B28B 17/0081 (2013.01); B29C 64/268 (2017.08); B29C 64/277 (2017.08); B29C 64/393 (2017.08); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 50/02 (2014.12); B22F 12/49 (2021.01); Y02P 10/25 (2015.11)] 15 Claims
OG exemplary drawing
 
1. A method for the additive manufacture of a component to be produced in layers in a powder bed, the method comprising:
directing at least two laser beams by at least two respective laser scanners to a region of the powder bed to impinge from above onto a top surface of the powder bed, wherein the at least two laser beams are each deflected two-dimensionally over the powder bed region and wherein a laser spot of each laser beam is projected onto the powder bed below the corresponding scanner, and the at least two laser spots on the top surface of the powder each have the same or almost the same spot diameter of less than or equal to 300 μm so that all of the at least two laser beams are equally suitable to produce the component with a same surface roughness; and
manufacturing the component in the powder bed with the at least two laser beams, wherein a surface contour of the component can be manufactured by either one of the at least two laser beams with the same surface roughness, wherein all surface contours of an outer surface of the component are manufactured solely by a first of the at least two laser beams, and wherein an internal region of the component is manufactured by a second of the at least two laser beams.