US 12,434,441 B2
Method for additive manufacturing of a three-dimensional object
Philip Obst, Munich (DE); and Paul Victor Osswald, Munich (DE)
Assigned to Bayerische Motoren Werke Aktiengesellschaft, Munich (DE)
Appl. No. 18/261,423
Filed by Bayerische Motoren Werke Aktiengesellschaft, Munich (DE)
PCT Filed Dec. 2, 2021, PCT No. PCT/EP2021/083904
§ 371(c)(1), (2) Date Jul. 13, 2023,
PCT Pub. No. WO2022/152459, PCT Pub. Date Jul. 21, 2022.
Claims priority of application No. 10 2021 100 620.1 (DE), filed on Jan. 14, 2021.
Prior Publication US 2024/0059021 A1, Feb. 22, 2024
Int. Cl. B29C 64/124 (2017.01); B29C 64/165 (2017.01); B29C 64/264 (2017.01); B29C 64/393 (2017.01); B33Y 10/00 (2015.01); B33Y 50/02 (2015.01); B29L 31/30 (2006.01); B33Y 80/00 (2015.01)
CPC B29C 64/393 (2017.08) [B29C 64/165 (2017.08); B29C 64/264 (2017.08); B33Y 10/00 (2014.12); B33Y 50/02 (2014.12); B29L 2031/30 (2013.01); B33Y 80/00 (2014.12)] 14 Claims
OG exemplary drawing
 
1. A method for additive manufacturing of a three-dimensional object, comprising the steps of:
successively exposing a construction material comprising at least one UV-curable component by UV radiation to form a green body; and
subjecting the green body to thermal energy, wherein at least one component of the construction material thermally cures to form the three-dimensional object upon exceeding of a curing temperature;
wherein the successively exposing by the UV radiation to form the green body is controlled such that at least in sections the curing temperature of the at least one component is not significantly exceeded, wherein, during the successively exposing, a structural member connected to the green body is constructed and wherein the structural member experiences at least in sections a thermal energy introduction which is higher, due to an effect of the UV radiation in a defined manner, than the green body, wherein the structural member includes a stability section and a shielding section, wherein the stability section experiences a higher thermal energy introduction during the successively exposing than the shielding section, and wherein the shielding section is formed as an area externally enclosing the stability section at least in sections.
 
13. A three-dimensional object manufactured by the method according to claim 1.