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公开(公告)号：US20200331061A1
公开(公告)日：2020-10-22
申请号：US16761675
申请日：2018-11-02
Applicant: General Electric Company
Inventor： MacKenzie Ryan Redding , Justin Mamrak , Donald Dana Lowe , David Scott Simmermon
Abstract: An additive manufacturing machine (900) including a build unit (904) that is supported by an overhead gantry (912) and a method for positioning the build unit (904) are provided. A positioning system (930) includes one or more position sensors (932) that are separate from the build unit (904) and are configured for obtaining positional data of the build unit (904). The positioning system (930) may continuously track the position and orientation of the build unit (904) and the additive manufacturing machine (900) may adjust the position of the build unit (904) toward a target position.
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公开(公告)号：US20200269499A1
公开(公告)日：2020-08-27
申请号：US16761595
申请日：2018-11-02
Applicant: General Electric Company
Inventor： Justin Mamrak
IPC: B29C64/153 , B29C64/364 , B29C64/245 , B29C64/232
Abstract: Methods are generally provided for making an object(s) from powder. In one embodiment, the method includes: (a) applying a layer of powder on a build platform; (b) irradiating at least part of a layer of powder to form a build wall defining at least one internal cavity therein; (c) moving at least one of the build platform downward or the build unit upward in a direction substantially normal to the layer of powder; and (d) repeating at least steps (a) through (c) to form the build wall. The build wall defines at least one passageway therein, and wherein the at least one passageway has an inlet and an outlet defined in the layer of powder.
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公开(公告)号：US10478893B1
公开(公告)日：2019-11-19
申请号：US15406461
申请日：2017-01-13
Applicant: GENERAL ELECTRIC COMPANY
Inventor： MacKenzie Ryan Redding , Zachary David Fieldman , Justin Mamrak
IPC: B22F3/10 , B22F3/105 , B33Y10/00 , B33Y30/00 , B33Y50/02 , B33Y40/00 , B23K15/00 , B23K26/342 , B23K26/14 , B23K26/08 , B23K37/02
Abstract: The present disclosure generally relates to additive manufacturing systems and methods on a large-scale format. One aspect involves a build unit that can be moved around in three dimensions by a positioning system, building separate portions of a large object. The build unit has an energy directing device that directs, e.g., laser or e-beam irradiation onto a powder layer. In the case of laser irradiation, the build volume may have a gasflow device that provides laminar gas flow to a laminar flow zone above the layer of powder. This allows for efficient removal of the smoke, condensates, and other impurities produced by irradiating the powder (the “gas plume”) without excessively disturbing the powder layer. The build unit may also have a recoater that allows it to selectively deposit particular quantities of powder in specific locations over a work surface to build large, high quality, high precision objects.
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公开(公告)号：US11422725B2
公开(公告)日：2022-08-23
申请号：US15659136
申请日：2017-07-25
Applicant: General Electric Company
Inventor： Justin Mamrak
Abstract: A method of storing a set of data representing a point cloud, comprising: creating an array in a digital memory having cells addressable by reference to at least one index, wherein each of the at least one indices has a predetermined correspondence to a geometric location within the point cloud; and storing a value of the data set in each of the cells.
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公开(公告)号：US11370031B2
公开(公告)日：2022-06-28
申请号：US17072163
申请日：2020-10-16
Applicant: General Electric Company
Inventor： MacKenzie Ryan Redding , Zachary David Fieldman , Justin Mamrak
IPC: B22F3/105 , B33Y10/00 , B33Y30/00 , B33Y50/02 , B23K26/342 , B23K26/14 , B23K15/00 , B29C64/153 , B33Y40/00 , B29C64/371 , B23K26/08 , B22F12/00 , B22F10/00 , B22F10/10
Abstract: The present disclosure generally relates to additive manufacturing systems and methods on a large-scale format. One aspect involves a build unit that can be moved around in three dimensions by a positioning system, building separate portions of a large object. The build unit has an energy directing device that directs, e.g., laser or e-beam irradiation onto a powder layer. In the case of laser irradiation, the build volume may have a gasflow device that provides laminar gas flow to a laminar flow zone above the layer of powder. This allows for efficient removal of the smoke, condensates, and other impurities produced by irradiating the powder (the “gas plume”) without excessively disturbing the powder layer. The build unit may also have a recoater that allows it to selectively deposit particular quantities of powder in specific locations over a work surface to build large, high quality, high precision objects.
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Patent Agency Ranking
公开(公告)号：US11318535B2
公开(公告)日：2022-05-03
申请号：US15390133
申请日：2016-12-23
Applicant: General Electric Company
Inventor： Justin Mamrak , Andrew J. Martin , Mackenzie Ryan Redding
IPC: B22F3/105 , B33Y10/00 , B33Y50/02 , B23K26/342 , B23K26/14 , B23K26/70 , B22F10/20 , B23K26/144 , B29C64/371 , B29C64/393 , B29C64/153 , B22F10/30
Abstract: A method is provided for controlling an additive manufacturing process in which one or more energy beams are used to selectively fuse a powder contained in an additive manufacturing machine having a gas flow therein in order to form a workpiece, in the presence of one or more plumes generated by interaction of the one or more energy beams with the powder, wherein the process is controlled by an electronic controller. The method includes: performing a build process to form a workpiece using a set of initial process parameters; sensing a condition of the finished workpiece; using the electronic controller, comparing the condition of the finished workpiece to a predetermined standard; using the electronic controller, changing one or more of the initial process parameters to define a set of revised process parameters; and performing a subsequent build process using the revised process parameters.
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公开(公告)号：US20210370394A1
公开(公告)日：2021-12-02
申请号：US16761717
申请日：2018-11-02
Applicant: General Electric Company
Inventor： MacKenzie Ryan Redding , Andrew David Simpson , Justin Mamrak
Abstract: Additive manufacturing apparatus, along with methods of forming an object therewith, are provided. The additive manufacturing apparatus may include at least one build unit; a build platform (such as a rotating build platform); and a pair of collectors positioned on the apparatus such that a first collector contacts an outer surface of an object as it is formed on the build platform and a second collector contacts an inner surface of the object as it is formed on the build platform.
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公开(公告)号：US20210178675A1
公开(公告)日：2021-06-17
申请号：US16761623
申请日：2018-11-02
Applicant: General Electric Company
Inventor： Justin Mamrak , MacKenzie Ryan Redding
IPC: B29C64/209 , B29C64/268 , B29C64/364 , B29C64/165 , B29C64/214 , B33Y30/00 , F16F15/08
Abstract: An additive manufacturing machine (900) includes a build unit (904) that is supported by an overhead gantry (918). The build unit (904) includes a powder dispenser (906) including a vibration mechanism (922) and a scan unit (908) including a powder fusing device (910) for fusing or binding portions of a layer of additive powder. A vibration isolation device (932), such as a passive rubber damper (940) or an active vibration canceling mechanism (960), is positioned between the powder dispenser (906) and the scan unit (908) to prevent vibrations in the powder dispenser (906) from causing operational issues with the scan unit (908) and inaccuracies in the additive manufacturing process.
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公开(公告)号：US10981232B2
公开(公告)日：2021-04-20
申请号：US15968795
申请日：2018-05-02
Applicant: GENERAL ELECTRIC COMPANY
Inventor： MacKenzie Ryan Redding , Zachary David Fieldman , Justin Mamrak
IPC: B22F3/105 , B23K37/02 , B23K26/08 , B23K15/00 , B23K26/342 , B33Y10/00 , B23K26/14 , B33Y50/02 , B33Y40/00 , B33Y30/00 , B22F12/00 , B22F10/10
Abstract: The present disclosure generally relates to additive manufacturing systems and methods on a large-scale format. One aspect involves a build unit that can be moved around in three dimensions by a positioning system, building separate portions of a large object. The build unit has an energy directing device that directs, e.g., laser or e-beam irradiation onto a powder layer. In the case of laser irradiation, the build volume may have a gasflow device that provides laminar gas flow to a laminar flow zone above the layer of powder. This allows for efficient removal of the smoke, condensates, and other impurities produced by irradiating the powder (the “gas plume”) without excessively disturbing the powder layer. The build unit may also have a recoater that allows it to selectively deposit particular quantities of powder in specific locations over a work surface to build large, high quality, high precision objects.
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公开(公告)号：US10919218B2
公开(公告)日：2021-02-16
申请号：US15807439
申请日：2017-11-08
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Justin Mamrak , Zachary Fieldman
IPC: B29C64/153 , B29C64/393 , B33Y50/02 , B33Y30/00 , B22F3/105 , B33Y10/00 , H01S5/06
Abstract: A method, apparatus, and program for calibrating an additive manufacturing apparatus. In one aspect, a method is disclosed for calibrating an additive manufacturing apparatus. The method includes forming a first solidified portion within a first scan region, wherein the solidified portion within the first scan region is formed by irradiating a build material while a build unit is in a first location. The method further includes forming a second solidified portion within a second scan region, wherein the second solidified portion within the second scan region is formed by irradiating a build material while a build unit is in a second location different from said first location. An alignment of the additive manufacturing apparatus determined based on the detected alignment of the first solidified portion and the second solidified portion.
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