METHODS AND APPARATUS FOR COMPENSATING FOR THERMAL EXPANSION DURING ADDITIVE MANUFACTURING

    公开(公告)号:WO2019005413A1

    公开(公告)日:2019-01-03

    申请号:PCT/US2018/035330

    申请日:2018-05-31

    Abstract: Embodiments of the present disclosure are drawn to additive manufacturing apparatus and methods. An exemplary additive manufacturing method may include forming a part using additive manufacturing. The method may also include bringing the part to a first temperature, measuring the part along at least three axes at the first temperature, bringing the part to a second temperature, different than the first temperature, and measuring the part along the at least three axes at the second temperature. The method may further include comparing the size of the part at the first and second temperatures to calculate a coefficient of thermal expansion, generating a tool path that compensates for the coefficient of thermal expansion, bringing the part to the first temperature, and trimming the part while the part is at the first temperature using the tool path.

    METHODS OF SECURING AN INITIAL LAYER DURING ADDITIVE MANUFACTURING OF THERMOPLASTIC MATERIAL
    2.
    发明申请
    METHODS OF SECURING AN INITIAL LAYER DURING ADDITIVE MANUFACTURING OF THERMOPLASTIC MATERIAL 审中-公开
    在热塑性材料的添加剂制造期间保护初始层的方法

    公开(公告)号:WO2017176427A1

    公开(公告)日:2017-10-12

    申请号:PCT/US2017/022050

    申请日:2017-03-13

    Abstract: In one embodiment, an additive manufacturing method including the steps of positioning a removable surface on a worktable; applying an adhesive material to the removable surface; depositing a plurality of pellets into the adhesive material, wherein at least a portion of each pellet of the plurality of pellets remains exposed; depositing a first plurality of layers of a flowable material on at least some of the plurality of pellets; and depositing a second plurality of layers of the flowable material on the first plurality of layers.

    Abstract translation: 在一个实施例中,增材制造方法包括以下步骤:将可移除表面定位在工作台上; 将粘合剂材料施加到可移除表面上; 将多个小球沉积到所述粘合材料中,其中所述多个小球中的每个小球的至少一部分保持暴露; 在所述多个球粒中的至少一些上沉积第一多层可流动材料; 以及在第一多个层上沉积第二多层可流动材料。

    APPARATUS AND METHOD FOR PRINTING LARGE THERMOPLASTIC PARTS DURING ADDITIVE MANUFACTURING

    公开(公告)号:WO2019055107A1

    公开(公告)日:2019-03-21

    申请号:PCT/US2018/041208

    申请日:2018-07-09

    Abstract: Embodiments of the present disclosure are drawn to additive manufacturing apparatus and methods. An exemplary additive manufacturing system may include an extruder (61), the extruder having an opening (40) dimensioned to receive a material. The apparatus may also include an extruder output in fluid communication with the extruder, wherein the extruder output extends away from the extruder along a longitudinal axis. One or more heaters (41) positioned along at least a portion of the extruder output may also be included, and, as the material passes through the extruder output, the one or more heaters may at least partially melt the material. The system may also include a gear pump (74) in fluid communication with the extruder output for receiving the at least partially melted material, and a nozzle (51) in fluid communication with the gear pump for depositing the at least partially melted material.

    MACHINE AND METHOD FOR FORMING ARTICLES
    5.
    发明申请
    MACHINE AND METHOD FOR FORMING ARTICLES 审中-公开
    机器和形成物品的方法

    公开(公告)号:WO2017116507A1

    公开(公告)日:2017-07-06

    申请号:PCT/US2016/044159

    申请日:2016-07-27

    Abstract: A machine and method of forming an article generally comprising extruding a molten bead of thermoplastic material along x, y and z axes in forming an article consisting of a strata of such material, and passing a roller over each applied portion of such molten bead to compress such bead portion, enhancing the fusion of engaging plies of such extruded material.

    Abstract translation: 一种形成物品的机器和方法,通常包括沿着x,y和z轴线挤压热塑性材料的熔融珠粒,以形成由这种材料的层构成的物品,并且在每个 这种熔融珠粒的涂覆部分压缩这种珠粒部分,增强了这种挤出材料的啮合层片的熔合

    ADDITIVE MANUFACTURING MACHINE FOR FORMING THERMOPLASTIC ARTICLES AND DEVICE UTILIZED IN THE PRODUCTION THEREOF
    6.
    发明申请
    ADDITIVE MANUFACTURING MACHINE FOR FORMING THERMOPLASTIC ARTICLES AND DEVICE UTILIZED IN THE PRODUCTION THEREOF 审中-公开
    用于形成热塑性物品的添加剂制造机及其生产中使用的装置

    公开(公告)号:WO2016161317A1

    公开(公告)日:2016-10-06

    申请号:PCT/US2016/025615

    申请日:2016-04-01

    Abstract: An assembly mountable on a machine including a gantry displaceable along a y axis, a tool carrier mounted on such gantry displaceable along a z-axis, a tool holder mounted on such tool carrier displaceable about a z-axis, a tool support shaft provided with an axis disposed in an x-y plane journalled in such tool holder and displaceable about the axis thereof, a dispersion conduit mounted on such shaft, perpendicular to such shaft axis, means on such dispenser conduit for ejection a molten beam of thermoplastic material and a flexible hose with a first end supported on such carrier forming a rotary with such extension conduit, and a second end communicating with an inlet of such dispenser conduit.

    Abstract translation: 一种可安装在机器上的组件,包括可沿着ay轴线移位的台架,安装在沿z轴移动的台架上的工具架,安装在可围绕z轴移动的工具架上的工具架;工具支撑轴, 轴设置在xy平面中,轴颈安装在这样的工具夹具中并可围绕其轴线移动;分散导管,安装在这样的轴上,垂直于该轴的轴线;在这种分配管道上的装置,用于喷射热塑性材料的熔融束和柔性软管, 支撑在这样的载体上的第一端形成具有这种延伸导管的旋转体,以及与这种分配器导管的入口连通的第二端。

    METHODS AND SYSTEMS FOR PRODUCING BOAT MOLDS BY ADDITIVE MANUFACTURING

    公开(公告)号:WO2021167929A1

    公开(公告)日:2021-08-26

    申请号:PCT/US2021/018294

    申请日:2021-02-17

    Abstract: An additive manufacturing method includes providing material to an extruder (61) of an additive manufacturing apparatus, heating the material to form a flowable material, and depositing a first layer of the flowable material from a nozzle (51) of the additive manufacturing apparatus to form part of a hull portion (81) of a plug for a marine article. The method also includes depositing a second layer of the flowable material from the nozzle (51) of the additive manufacturing apparatus to form part of a deck portion (82) of the plug for the marine article.

    APPARATUS AND METHODS FOR ADDITIVE MANUFACTURING AT AMBIENT TEMPERATURE

    公开(公告)号:WO2019094069A1

    公开(公告)日:2019-05-16

    申请号:PCT/US2018/041236

    申请日:2018-07-09

    Inventor: VAAL, Scott, G.

    Abstract: An exemplary additive manufacturing system may include an extruder (61) having an opening dimensioned to receive a material. The extruder also may have a barrel (42) and a screw (80) within the barrel. The screw may have a diameter ranging between about 20 mm and about 150 mm and the barrel extends along a longitudinal axis. The system may include one or more heaters (41) positioned along at least a portion of the barrel. As the material passes through the barrel, the one or more heaters may at least partially melt the material. The system may further include a gear pump (74) in fluid communication with the barrel for receiving the at least partially melted material. Additionally, the system may include a nozzle (51) in fluid communication with the gear pump for depositing the at least partially melted material. The system also may include a vertical worktable (37).

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