| CPC B29C 64/153 (2017.08) [B22F 10/28 (2021.01); B22F 10/362 (2021.01); B22F 10/364 (2021.01); B22F 12/13 (2021.01); B22F 12/45 (2021.01); B23K 26/082 (2015.10); B29C 64/277 (2017.08); B29C 64/364 (2017.08); B29C 64/393 (2017.08); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B22F 10/36 (2021.01); B22F 12/49 (2021.01); B22F 12/90 (2021.01); B22F 2203/11 (2013.01); B33Y 50/02 (2014.12)] | 11 Claims |
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1. A method of additively manufacturing a three-dimensional object, the method comprising:
emitting a first energy beam from a first irradiation device along a first trajectory, the first energy beam configured to selectively solidify a respective one of a plurality of sequential layers of a construction material, the first irradiation device including an energy beam deflection device;
emitting one or more second energy beams from one or more of a plurality of second irradiation devices, the one or more second energy beams configured to provide a designated thermal pre-treatment and/or a designated thermal post-treatment of the respective one of the plurality of sequential layers of the construction material, each of the plurality of second irradiation devices including a respective energy beam deflection device;
controlling the first irradiation device and the one or more of the plurality of second irradiation devices via a control device, the control device configured to generate control information based on the designated thermal pre-treatment and/or the designated thermal post-treatment, the control information defining at least one of a local distance offset of the one or more second energy beams relative to a position of the first energy beam and/or defining a temporal offset of at least one of the one or more second energy beams relative to the first energy beam; and
controlling, via the control device, an energy input of the designated thermal pre-treatment and/or the designated thermal post-treatment to the respective one of the plurality of sequential layers of the construction material based at least in part on the defined local distance offset and/or the defined temporal offset,
wherein the designated thermal pre-treatment and/or the designated thermal post-treatment is based on at least one specified thermal condition for the respective one of the plurality of sequential layers of the construction material, the at least one specified thermal condition including at least one of a heating condition, a cooling condition, a melting condition, and/or a solidification condition of the construction material,
wherein the control information is further configured to control the one or more of the plurality of second irradiation devices independently from the first irradiation device based on which at least one of the one or more second energy beams generated by respective second irradiation devices is guided to lead or tail the first energy beam generated by the first irradiation device, according to local lead or tailing based on the defined local distance offset and/or a defined temporal lead or tailing based on the defined temporal offset, along a same trajectory as the first trajectory over the respective one of the plurality of sequential layers of the construction material that is to be selectively solidified or is selectively solidified, and
wherein the control device controls the energy input into the respective one of the plurality of sequential layers of the construction material by the one or more second energy beams generated by the respective second irradiation devices according to the defined local lead or trailing and/or the defined temporal lead or tailing of the respective one or more second energy beams relative to the first energy beam generated by the first irradiation device.
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