EP 3934833 A1 20220112 - CONTROL METHOD, CONTROL DEVICE AND PRODUCTION APPARATUS
Title (en)
CONTROL METHOD, CONTROL DEVICE AND PRODUCTION APPARATUS
Title (de)
STEUERVERFAHREN, STEUERUNGSEINRICHTUNG UND HERSTELLUNGSVORRICHTUNG
Title (fr)
PROCÉDÉ DE COMMANDE, SYSTÈME DE COMMANDE ET DISPOSITIF DE FABRICATION
Publication
Application
Priority
- DE 102019001522 A 20190304
- EP 2020055386 W 20200302
Abstract (en)
[origin: WO2020178216A1] The invention relates to a control method for controlling a multi-beam apparatus having one or more beam sources for producing a plurality of beams of a system for manufacturing a three-dimensional workpiece by means of a generative layer construction method, in which method a material that can be solidified in order to manufacture the three-dimensional workpiece is applied in layers to a surface of a carrier and the material that can be solidified is solidified by the plurality of beams in a respective layer at points of incidence of the plurality of beams on the material that can be solidified, wherein the points of incidence of the beams for solidifying selective regions of the layers of the material that can be solidified in order to manufacture the three-dimensional workpiece are each controlled substantially against a gas flow direction of a gas flow over the surface of the carrier; wherein the control method comprises: (a) dividing the material to be solidified in the respective layer into at least two sections, wherein two of the at least two sections extend in the gas flow direction of the gas flow prevailing over the two of the at least two sections in succession at least in part, (b) dividing at least one of the two of the at least two sections into at least two surface pieces, (c) assigning each of the surface pieces to exactly one specific beam, which solidifies the material to be solidified in the assigned surface piece, (d) controlling the points of incidence of the beams such that, at at least one point in time during an exposure of the material to be solidified, the material to be solidified is solidified in at least two surface pieces, and a network consisting of straight lines extending between each center point of the points of incidence to every other center point of the points of incidence, at no point in time during the exposure, in which all center points of the points of incidence are located outside of a predetermined distance from each other, has a straight line parallel to the gas flow direction of the gas flow prevailing over the two of the at least two sections.
IPC 8 full level
B22F 3/105 (2006.01); B23K 26/06 (2014.01); B23K 26/12 (2014.01); B23K 26/14 (2014.01); B23K 26/142 (2014.01); B23K 26/16 (2006.01); B23K 26/342 (2014.01); B23K 26/70 (2014.01); B29C 64/153 (2017.01); B29C 64/264 (2017.01); B29C 64/268 (2017.01); B29C 64/277 (2017.01); B29C 64/371 (2017.01); B29C 64/393 (2017.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01); B33Y 50/02 (2015.01)
CPC (source: EP US)
B22F 10/28 (2021.01 - EP US); B22F 10/322 (2021.01 - EP US); B22F 10/366 (2021.01 - EP US); B22F 12/45 (2021.01 - EP US); B22F 12/70 (2021.01 - US); B23K 26/0604 (2013.01 - EP); B23K 26/082 (2015.10 - EP US); B23K 26/142 (2015.10 - EP); B23K 26/342 (2015.10 - EP US); B29C 64/153 (2017.08 - EP US); B29C 64/264 (2017.08 - EP); B29C 64/268 (2017.08 - EP US); B29C 64/277 (2017.08 - EP); B29C 64/371 (2017.08 - EP); B29C 64/393 (2017.08 - EP); B33Y 10/00 (2014.12 - EP); B33Y 30/00 (2014.12 - EP US); B33Y 50/02 (2014.12 - EP); B22F 12/41 (2021.01 - EP US); B22F 12/49 (2021.01 - EP US); B22F 12/90 (2021.01 - EP US); Y02P 10/25 (2015.11 - EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2020178216 A1 20200910; CN 113543910 A 20211022; EP 3934833 A1 20220112; JP 2022523412 A 20220422; JP 7407832 B2 20240104; US 2022193769 A1 20220623
DOCDB simple family (application)
EP 2020055386 W 20200302; CN 202080019138 A 20200302; EP 20708079 A 20200302; JP 2021552607 A 20200302; US 202017432216 A 20200302