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.
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:
An additive manufacturing system may include an extruder. The extruder may include a barrel having a bore. Additionally, the extruder may include an extruder screw at least partially received within the bore of the barrel. The additive manufacturing system also may include a gear pump fluidly coupled to the bore of the barrel. The extruder screw may extend at least partially into the gear pump.
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.
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:
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:
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.
Abstract:
An additive manufacturing apparatus includes a first vertically- extending support leg (85), a second vertically-extending support leg (86), and a gantry (26) supported on the first and second support legs (85, 86). The additive manufacturing apparatus also includes a work table (27) movably supported beneath the gantry (26), a print head (43) supported on the gantry (26), and a trim head (90 supported on the gantry (26) with the print head (43).
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).
Abstract:
Embodiments of the present disclosure are drawn to additive manufacturing apparatus and methods. An exemplary apparatus for fabricating components via additive manufacturing may include a programmable CNC machine. The CNC machine may comprise a first worktable extending in a first plane and a second worktable extending in a second plane, wherein the second plane is oriented at an angle relative to the first plane. At least one conveyor belt may be operably coupled to the first worktable. A printing gantry may be displaceable along a first axis of the CNC machine. The CNC machine may also comprise an applicator having a nozzle configured to deposit material on the second worktable.