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1.发明申请公开(公告)号：US20230129572A1
公开(公告)日：2023-04-27
申请号：US18069544
申请日：2022-12-21
IPC分类号： B29C64/153 , B33Y10/00 , B33Y30/00 , B33Y50/02 , B23K26/342 , B23K26/70 , B23K26/03 , B23K26/14 , B23K31/00 , B22F10/28
摘要： A system and method of monitoring a powder-bed additive manufacturing process is provided where a layer of additive powder is fused using an energy source and electromagnetic emission signals are measured by a melt pool monitoring system to monitor the print process. The measured emission signals are analyzed to identify outlier emissions and clusters of outliers are identified by assessing the spatial proximity of the outlier emissions, e.g., using clustering algorithms, spatial control charts, etc. An alert may be provided or a process adjustment may be made when a cluster is identified or when a magnitude of a cluster exceeds a predetermined cluster threshold.
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公开(公告)号：US11559854B2
公开(公告)日：2023-01-24
申请号：US16662621
申请日：2019-10-24
IPC分类号： B23K26/342 , B33Y10/00 , B33Y30/00 , B33Y50/02 , B23K26/70 , B23K26/03 , B23K26/14 , B23K31/00
摘要： A system and method of monitoring a powder-bed additive manufacturing process is provided where a layer of additive powder is fused using an energy source and electromagnetic emission signals are measured by a melt pool monitoring system to monitor the print process. The measured emission signals are analyzed to identify outlier emissions and clusters of outliers are identified by assessing the spatial proximity of the outlier emissions, e.g., using clustering algorithms, spatial control charts, etc. An alert may be provided or a process adjustment may be made when a cluster is identified or when a magnitude of a cluster exceeds a predetermined cluster threshold.
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公开(公告)号：US10943240B2
公开(公告)日：2021-03-09
申请号：US15479399
申请日：2017-04-05
摘要： A system and method for additively manufacturing a component including features for part identification are provided. The method includes selectively depositing a contrast agent on a cross sectional layer to define a component identifier of the component and directing energy from an energy source onto the contrast agent to fuse the contrast agent and the cross sectional layer. The contrast agent may be an x-ray emission contrast agent that is read using an x-ray emission spectroscopy method, an infrared contrast agent that is read using an infrared camera or an infrared scanner, or a radioactive contrast agent that is read using a gamma ray spectrometer.
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公开(公告)号：US10894364B2
公开(公告)日：2021-01-19
申请号：US16219531
申请日：2018-12-13
发明人： Thomas Graham Spears
IPC分类号： B29C64/393 , G06T7/62 , G06T7/73 , B29C64/153 , G06T7/00 , G06T7/40 , B33Y10/00 , B33Y50/02
摘要： A method of controlling an additive manufacturing process in which a directed energy source is used to selectively melt material to form a workpiece, forming a melt pool in the process of melting, the method comprising: using an imaging apparatus to generate an image of the melt pool comprising an array of individual image elements, the image including a measurement of at least one physical property for each of the individual image elements; from the measurements, mapping a melt pool boundary of the melt pool; computing a geometric length of the melt pool boundary; and controlling at least one aspect of the additive manufacturing process with reference to the geometric length.
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公开(公告)号：US10703086B2
公开(公告)日：2020-07-07
申请号：US15479454
申请日：2017-04-05
IPC分类号： B33Y80/00 , B33Y50/02 , G07D7/06 , B29C64/153 , B29C64/20 , G07D7/2033
摘要： A system and method for authenticating an additively manufactured component is provided. The method includes locating an identifying region of the component that includes localized density variations that define a component identifier. The method further includes interrogating the identifying region of the component using a scanning device such as an x-ray computed tomography device to obtain the component identifier. The method further includes obtaining a reference identifier from a database, comparing the component identifier to the reference identifier, and determining that the component is authentic if the component identifier matches the reference identifier.
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公开(公告)号：US20180290395A1
公开(公告)日：2018-10-11
申请号：US15479339
申请日：2017-04-05
摘要： An additively manufactured component and a method for manufacturing the same are provided. The additively manufactured component includes a cross sectional layer having a surface surrounding the cross sectional layer. The cross sectional layer is formed by moving a focal point of an energy source over a bed of additive material. A surface irregularity is formed on the surface by manipulating the energy level of the energy source. The surface may include a datum feature positioned at a predetermined location relative to the surface irregularity and the surface irregularity may be greater than a surface roughness of the surface but less than one millimeter.
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公开(公告)号：US09989495B2
公开(公告)日：2018-06-05
申请号：US14946401
申请日：2015-11-19
CPC分类号： G01N29/02 , B22F3/1055 , B22F2003/1057 , B22F2999/00 , B28B1/001 , B29C64/153 , B29C64/386 , B33Y50/00 , B33Y50/02 , G01N29/2418 , G01N29/2431 , G01N29/4427 , G01N2291/0252 , G01N2291/267 , Y02P10/295 , B22F2202/01 , B22F2203/03
摘要： A method of monitoring an additive manufacturing process in which a directed energy source is used to create a weld pool at an exposed build surface of a mass of powdered material, and selectively fuse the powdered material to form a workpiece, the method including measuring acoustic energy generated by the weld pool to generate a measured acoustic profile.
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公开(公告)号：US11806925B2
公开(公告)日：2023-11-07
申请号：US18069544
申请日：2022-12-21
IPC分类号： B29C64/153 , B33Y10/00 , B33Y30/00 , B33Y50/02 , B23K26/342 , B23K26/70 , B23K26/03 , B23K26/14 , B23K31/00 , B22F10/28 , B22F12/49 , B22F12/60 , B22F12/90 , B22F10/322 , B22F10/368
CPC分类号： B29C64/153 , B22F10/28 , B23K26/032 , B23K26/034 , B23K26/1464 , B23K26/342 , B23K26/702 , B23K31/003 , B33Y10/00 , B33Y30/00 , B33Y50/02 , B22F10/322 , B22F10/368 , B22F12/49 , B22F12/60 , B22F12/90
摘要： A system and method of monitoring a powder-bed additive manufacturing process is provided where a layer of additive powder is fused using an energy source and electromagnetic emission signals are measured by a melt pool monitoring system to monitor the print process. The measured emission signals are analyzed to identify outlier emissions and clusters of outliers are identified by assessing the spatial proximity of the outlier emissions, e.g., using clustering algorithms, spatial control charts, etc. An alert may be provided or a process adjustment may be made when a cluster is identified or when a magnitude of a cluster exceeds a predetermined cluster threshold.
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公开(公告)号：US20210053295A1
公开(公告)日：2021-02-25
申请号：US17092913
申请日：2020-11-09
发明人： Thomas Graham Spears
IPC分类号： B29C64/393 , G06T7/73 , B29C64/153 , G06T7/00 , G06T7/40
摘要： A method of controlling a manufacturing process in which directed energy selectively melts material, forming a melt pool. The method includes: generating an image having an array of individual image elements, the image including measurement, for each image element, of two or more physical properties from the group including: color, emission frequency, and sheen, the measurements collectively indicating presence of: liquid phase, melting, or incipient melting; from the measurements, mapping a boundary of the melt pool, wherein for each of the measurements that indicate liquid phase, melting, or incipient melting, corresponding image elements are defined to be inside the boundary, and wherein for each of the measurements that do not indicate liquid phase, melting, or incipient melting, the corresponding image elements are defined to be outside of the boundary; and controlling at least one aspect of the additive manufacturing process with reference to the boundary.
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公开(公告)号：US10646924B2
公开(公告)日：2020-05-12
申请号：US15438311
申请日：2017-02-21
IPC分类号： B22F3/105 , B29C64/20 , B29C64/153 , B29C64/386 , B33Y10/00 , B33Y30/00 , B33Y50/02 , B29K105/00
摘要： The present invention is related to additive manufacturing methods and systems using a recoater with in-situ exchangeable recoater blades. Being able to switch out recoater blades in situ, i.e. without stopping the build and opening up the build chamber, is advantageous, especially for larger, more complicated, and/or longer builds. For instance, if a recoater blade becomes damaged, a new one can be readily swapped in. Or if a different material for the object(s) is used during the build, it may be advantageous to switch in a new recoater blade that is made of the new, different material.
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