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公开(公告)号：US11951566B2
公开(公告)日：2024-04-09
申请号：US16527432
申请日：2019-07-31
IPC分类号： B23K26/342 , B23K26/06 , B23K26/062 , B33Y10/00 , B33Y30/00 , B33Y50/02
CPC分类号： B23K26/342 , B23K26/0608 , B23K26/062 , B33Y10/00 , B33Y30/00 , B33Y50/02
摘要： A method, medium, and system to obtain an assignment of one of a plurality of different additive manufacturing (AM) print parameter sets to each of a plurality of 3D volume elements forming a representation of the model of the part; define a plurality of groupings based on margin parameter values associated with the model of the part; assign a print parameter set to each grouping; automatically assign each of the plurality of print parameter sets to a laser of a multi-laser AM device; save a record of the determined print parameter sets to laser assignments; and transmit the record of the determined print parameter sets to laser assignments to an AM controller to control the multi-laser AM device to generate the part based on the model of the part and the determined print parameter sets to laser assignments, the generated part to be built in a single build.
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公开(公告)号：US11079739B2
公开(公告)日：2021-08-03
申请号：US16284409
申请日：2019-02-25
IPC分类号： G05B19/4099 , B33Y50/00 , B29C64/386 , B29C64/153 , B22F10/20 , B22F10/30
摘要： According to some embodiments, system and methods are provided comprising receiving, via a communication interface of a part parameter dictionary module comprising a processor, geometry data for a plurality of geometric structures forming a plurality of parts, wherein the parts are manufactured with an additive manufacturing machine; determining, using the processor of the part parameter dictionary module, a feature set for each geometric structure; generating, using the processor of the part parameter dictionary module, one of a coupon and a coupon set for the feature set; generating an optimized parameter set for each coupon, using the processor of the part parameter dictionary module, via execution of an iterative learning control process for each coupon; mapping, using the processor of the part parameter dictionary module, one or more parameters of the optimized parameter set to one or more features of the feature set; and generating a dictionary of optimized scan parameter sets to fabricate geometric structures with a material used in additive manufacturing. Numerous other aspects are provided.
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公开(公告)号：US11027535B2
公开(公告)日：2021-06-08
申请号：US15638913
申请日：2017-06-30
发明人： Rogier Sebastiaan Blom , John Freer , Dean Michael Robinson , Subhrajit Roychowdhury , Harry Kirk Mathews, Jr.
IPC分类号： B33Y30/00 , G05B19/4099 , B33Y50/02 , B33Y70/00 , B22F3/105 , C25D21/12 , B22F3/00 , C25D3/44 , C25D17/12
摘要： A manufacturing computer device for dynamically adapting additive manufacturing of a part is configured to store a model of the part including a plurality of build parameters. The manufacturing computer device is also configured to receive current sensor information of at least one current sensor reading of a melt pool from a build of the part in progress. The computer device is further configured to determine one or more attributes of the melt pool based on the current sensor information. Moreover, the computer device is configured to calculate at least one unseen attribute of the melt pool. In addition, the computer device is configured to determine an adjusted build parameter based on the at least one unseen attribute, the one or more attributes, and the plurality of build parameters. The computer device is also configured to transmit the adjusted build parameter to a machine currently manufacturing the part.
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公开(公告)号：US10698386B2
公开(公告)日：2020-06-30
申请号：US15787189
申请日：2017-10-18
发明人： Subhrajit Roychowdhury , Brian McCarthy , Michael Tucker , David C Bogdan, Jr. , Michael Evans Graham , William Carter
摘要： Some embodiments facilitate creation of an industrial asset item via a rotary additive manufacturing process. For example, a build plate may rotate about a vertical axis and move, relative to a print arm, along the vertical axis during printing. An industrial asset item definition data store may contain at least one electronic record defining the industrial asset item. A frame creation computer processor may slice the data defining the industrial asset item to create a series of two-dimensional, locally linear frames helically arranged as a spiral staircase of steps (and each step may be oriented normal to the vertical axis. Indications of the series of two-dimensional frames may then be output to be provided to a rotary three-dimensional printer.
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公开(公告)号：US10286484B1
公开(公告)日：2019-05-14
申请号：US15869760
申请日：2018-01-12
发明人： Brian Scott McCarthy , Subhrajit Roychowdhury , Mohammed Shalaby , Victor Petrovich Ostroverkhov , Michael Evans Graham , William Thomas Carter
IPC分类号： B33Y10/00 , B33Y30/00 , B33Y50/02 , B23K26/042 , B29C64/393 , B29C64/245 , G05B19/401 , B22F3/105 , B29C64/268 , B29C64/153 , B33Y40/00
摘要： An additive manufacturing system including a consolidation device, a build platform, an optical detector, and a controller is provided. The consolidation device is configured to form a build layer of a component. The build platform is configured to rotate about a build platform rotation axis extending along a first direction. The optical detector is configured to detect locations of at least two alignment marks. The controller is configured to receive locations of the at least two alignment marks from the optical detector. The controller is also configured to determine the locations of the build platform rotation axis and a build platform rotation center point based on a comparison between the at least two alignment marks, wherein the build platform rotation center point lies along the build platform rotation axis. The controller is further configured to control the consolidation device to consolidate a plurality of particles on the build platform.
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6.发明授权公开(公告)号：US11468164B2
公开(公告)日：2022-10-11
申请号：US16710051
申请日：2019-12-11
摘要： An industrial asset may have monitoring nodes (e.g., sensor or actuator nodes) that generate current monitoring node values. An abnormality detection and localization computer may receive the series of current monitoring node values and output an indication of at least one abnormal monitoring node that is currently being attacked or experiencing a fault. An actor-critic platform may tune a dynamic, resilient state estimator for a sensor node and output tuning parameters for a controller that improve operation of the industrial asset during the current attack or fault. The actor-critic platform may include, for example, a dynamic, resilient state estimator, an actor model, and a critic model. According to some embodiments, a value function of the critic model is updated for each action of the actor model and each action of the actor model is evaluated by the critic model to update a policy of the actor-critic platform.
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公开(公告)号：US11141818B2
公开(公告)日：2021-10-12
申请号：US15888727
申请日：2018-02-05
发明人： William Thomas Carter , Todd Jay Rockstroh , Brian Scott McCarthy , Subhrajit Roychowdhury , Younkoo Jeong , David Charles Bogdan, Jr.
IPC分类号： B33Y30/00 , B23K26/342 , B33Y10/00 , B23K26/16 , B23K26/08 , B23K26/06 , B23K26/144 , B23K26/082
摘要： A direct metal laser melting (DMLM) system includes a rotatable base, and a build plate mounted on and supported by the rotatable base, where the build plate includes a build surface. The DMLM system also includes a first actuator assembly, a first powder dispenser disposed proximate the build plate and configured to deposit a weldable powder on the build surface of the build plate. In addition, the DMLM system includes a first powder spreader disposed proximate the build plate and configured to spread the weldable powder deposited on the build surface of the build plate, and a first laser scanner supported by the first actuator assembly in a position relative to the build plate, such that at least a portion of the build surface is within a field of view of the first laser scanner. The first laser scanner is configured to selectively weld the weldable powder. The first laser scanner is further configured to translate axially relative to the build surface on the first actuator assembly.
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公开(公告)号：US20210126943A1
公开(公告)日：2021-04-29
申请号：US16666807
申请日：2019-10-29
摘要： An industrial asset may have monitoring nodes that generate current monitoring node values. A dynamic, resilient estimator may split a temporal monitoring node space into normal and one or more abnormal subspaces associated with different kinds of attack vectors. According to some embodiments, a neutralization model is constructed and trained for each attack vector using supervised learning and the associated abnormal subspace. In other embodiments, a single model is created using out-of-range values for abnormal monitoring nodes. Responsive to an indication of a particular abnormal monitoring node or nodes, the system may automatically invoke the appropriate neutralization model to determine estimated values of the particular abnormal monitoring node or nodes (e.g., by selecting the correct model or using out-of-range values). The series of current monitoring node values from the abnormal monitoring node or nodes may then be replaced with the estimated values.
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公开(公告)号：US10983505B2
公开(公告)日：2021-04-20
申请号：US15824206
申请日：2017-11-28
发明人： Subhrajit Roychowdhury , Brian McCarthy , Michael Tucker , David C Bogdan, Jr. , Michael Evans Graham , William Carter , Victor Ostroverkhov
IPC分类号： G05B19/4099 , B33Y50/02
摘要： Some embodiments facilitate creation of an industrial asset item via an additive manufacturing process wherein motion is provided between a build plate and a print arm. A correction engine may receive, from an industrial asset item definition data store containing at least one electronic record defining the industrial asset item, the data defining the industrial asset item. A correction engine computer processor may then correct the motion provided between the build plate and the print arm such that the motion deviates from a path indicated by the data defining the industrial asset item. The three-dimension printer may be a rotary printer such that the build plate rotates about a vertical axis and moves along the vertical axis during printing. In these cases, a pre-compensation algorithm may be applied to correct the motion provided between the build plate and the print arm before transmitting data to the three-dimensional additive manufacturing printer.
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公开(公告)号：US10884394B2
公开(公告)日：2021-01-05
申请号：US16127545
申请日：2018-09-11
IPC分类号： G05B19/4099 , B33Y50/00
摘要： A method of calibrating an additive manufacturing machine includes obtaining a model for the additive manufacturing machine, obtaining a baseline sensor data set for a particular additive manufacturing machine, creating a machine-specific nominal fingerprint for the particular additive manufacturing machine with controllable variation for one or more process inputs, producing on the particular additive manufacturing machine a test-page based object, obtaining a current sensor data set of the test-page based object on the particular additive manufacturing machine, estimating a scaling factor or a bias for each of the one or more process inputs from the current data set, and updating a calibration file for the particular additive machine if the estimated scaling error or bias are greater than a respective predetermined tolerance. A system for implementing the method and a non-transitory computer-readable medium are also disclosed.
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