# US 2021/0276097 A1 · 3d printing method for printing components, and corresponding devices > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0276097 A1 - Document ID: US20210276097A1 - Status: Published application - Kind: A1 - Application number: 17/269,175 - Filed: 2019-08-14 - Published: 2021-09-09 - Earliest claimed: 2018-08-17 - Assignees: Denise Bennewitz - Inventors: Michael Karg - Web page: https://patentgrep.com/patent/US20210276097A1 ## CPC - B23K 26/0643: {comprising mirrors} - B22F 10/28: Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM] - B22F 10/36: of energy beam parameters - B22F 10/366: Scanning parameters, e.g. hatch distance or scanning strategy - B22F 12/226: {for rotary motion} - B22F 12/44: characterised by the configuration of the radiation means - B22F 12/49: Scanners - B23K 26/064: by means of optical elements, e.g. lenses, mirrors or prisms - B23K 26/0648: {comprising lenses} - B23K 26/073: Shaping the laser spot - B23K 26/082: Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head - B23K 26/342: Build-up welding - B33Y 10/00: Processes of additive manufacturing - B33Y 30/00: Apparatus for additive manufacturing; Details thereof or accessories therefor - B22F 12/41: characterised by the type, e.g. laser or electron beam - Y02P 10/25: Process efficiency - B23K: SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM - B22F: WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER (making alloys by powder metallurgy C22C); APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER - B33Y: ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS ## Abstract The invention relates to a 3D component printing process wherein a body is built up from starting material that is irradiated trace-by-trace with a beam, and to a 3D printed component produced by this process. The beam has an effective area profile that is not rotationally symmetric, the effective area profile of the beam being oriented in accordance with the track direction. The invention further relates to a beam orienting assembly for a 3D printing machine and a 3D printing machine comprising such a beam orienting assembly. ## Claims ### Claim at position 1 1-16. (canceled) ### Claim 17 A 3D component printing process, wherein a body is built up from starting material which is irradiated track by track with a beam, the beam having an effective area profile, the effective area profile not being rotationally symmetric; wherein the effective area profile of the beam is oriented in accordance with the track direction. ### Claim 18 (depends on 17) The 3D component printing process of claim 17, wherein the effective area profile has a width B1 transverse to the track direction and a width B2 in the track direction, wherein B1≥1.5*B2. ### Claim 19 (depends on 17) The 3D component printing process according to claim 17, wherein the starting material is melted by irradiation and a profile of the starting material melting beam intensity has a profile that is transverse to the track and is at least 1.5 times as wide as in the direction of the track. ### Claim 20 (depends on 17) The 3D component printing process according to claim 17, wherein the beam is guided on a track which is curved at least in some portions, and the effective area profile is oriented in accordance with the curvature. ### Claim 21 (depends on 17) The 3D component printing process according to claim 17, wherein the effective area profile is rotated during the track by track irradiation. ### Claim 22 (depends on 21) The 3D component printing process according to claim 21, wherein the beam has a movement direction in which the profile area of starting material melting intensity is preceded by a preheating area of lower intensity or followed by an area of lower intensity. ### Claim 23 (depends on 22) The 3D component printing process according to claim 22, wherein the beam intensity varies transverse to the beam movement direction over the profile area of the starting material melting beam intensity. ### Claim 24 (depends on 17) The 3D component printing process according to claim 17, wherein the beam comprises an optical beam. ### Claim 25 (depends on 17) The 3D component printing process according to claim 17, wherein the effective area profile is generated by means of at least one beam shaping device. ### Claim 26 (depends on 25) The 3D component printing process according claim 25, wherein the beam shaping device comprises at least one diffractive optical element, at least one liquid crystal display, at least one reflective liquid crystal cell, at least one acousto-optic beam former, or at least one magnet. ### Claim 27 A beam orienting assembly for a 3D printing machine comprising: a starting material configured to be irradiated track-wise with a beam to build up a body therefrom, the beam having an effective area profile which is not rotationally symmetric; wherein the beam orienting assembly is adapted to rotate the effective area profile of the beam in accordance with the track direction. ### Claim 28 (depends on 27) The beam orienting assembly of claim 27, further comprising a liquid crystal matrix configured for beam shaping, diffraction, or rotation. ### Claim 29 (depends on 27) The beam orienting assembly of claim 27, further comprising a controller configured to direct the beam along a track curved in at least in some portions, and orienting the effective area profile in accordance with the track curvature. ### Claim 30 (depends on 29) The beam orienting assembly of claim 29, wherein the 3D printing machine further comprises a beam source which is configured to generate a beam intended for irradiation into the beam orienting assembly, and wherein the beam orienting assembly is configured to output a beam irradiated therein with an oriented effective area profile. ### Claim 31 (depends on 30) The beam orienting assembly of claim 30, wherein the 3D printing machine further comprises a beam shaping device for providing the beam from the beam source with an orientable, not rotationally symmetric, beam profile. ### Claim 32 (depends on 17) A 3D printed component produced by the 3D component printing process of claim 17.