Additive lathe that prints in cylindrical coordinates

    公开(公告)号:US10906243B2

    公开(公告)日:2021-02-02

    申请号:US15952606

    申请日:2018-04-13

    Abstract: An additive lathe integrates the advantages of additive manufacturing (also called 3d printing) with the cylindrical motion of a lathe to reduce material waste, print times, and increase creative potential. A post-processing system allows for an improved surface finishing on parts. The additive lathe no longer prints in cartesian (X, Y, Z) coordinates as other 3D printers and instead prints using cylindrical (R, Theta, Z) coordinates. The traditional bed or build plate is replaced with a horizontal cylindrical starter bar, on which 3D printed material is deposited along and around the bar. Essentially, the additive lathe works like a conventional lathe, but in reverse. Instead of taking a cylinder and slowly removing material as the part spins, the additive lathe adds material along and around the bar iteratively building up the part. The finishing mechanism allows for the creation of a smooth outer finish on printed parts while still in the printer.

    Article and method of forming an article

    公开(公告)号:US10449713B2

    公开(公告)日:2019-10-22

    申请号:US15005436

    申请日:2016-01-25

    Abstract: An article and a method of forming an article are provided. The article includes a thermoplastic build material and a polymeric support material. The polymeric support material is selectively removable from the thermoplastic build material through immersion in a solvent. The method of forming an article includes forming a part through additive manufacturing with a thermoplastic build material and a polymeric support material, immersing the part in a solvent, selectively softening the polymeric support material with the solvent, removing the part from the solvent, and separating the polymeric support material from the thermoplastic build material. Another method of forming an article includes forming a part through additive manufacturing with a thermoplastic build material and a polymeric support material, immersing the part in a solvent, selectively dissolving the polymeric support material with the solvent, and removing the thermoplastic build material from the solvent.

    Method for manufacturing a propeller blade

    公开(公告)号:US10406761B2

    公开(公告)日:2019-09-10

    申请号:US15009458

    申请日:2016-01-28

    Applicant: SNECMA

    Abstract: The invention relates to a method for manufacturing a blade made of composite material extending in a main elongation direction, the composite material of said blade comprising a fiber reinforcement densified by a matrix, the method comprising the following steps: a step of weaving warp yarns and weft yarns to produce a fiber preform, the fiber preform comprising at least one warp yarn adapted to form in the matrix at least one first portion of a channel, said portion of length of the warp yarn being directed according to the main elongation direction of the blade and opening at the root of the blade, the first channel portion formed in the matrix by said portion of length of warp yarn constituting at least one first portion of the internal airflow channel; a step of forming the fiber preform so as to produce a blade preform and densifying said blade preform; characterized in that the weaving step comprises placing at least one second portion of yarn adapted to form in the matrix a second portion of a channel, said second portion of yarn being transversally directed relative to said main elongation direction and opening at the trailing edge of the blade, the second channel portion formed in the matrix by said second portion of yarn constituting also at least one second portion of the internal airflow channel.

    Fused Porogen Process for Acoustic Septa Fabrication

    公开(公告)号:US20190270507A1

    公开(公告)日:2019-09-05

    申请号:US16415366

    申请日:2019-05-17

    Abstract: An example method for manufacturing a multicellular structure for acoustic damping is described that includes applying a porogen material to a solid support, inserting a multicellular frame into the solid support and through the porogen material so as to fill cells of the multicellular frame with the porogen material, fusing the porogen material, removing the multicellular frame from the solid support, and the multicellular frame contains a suspended fused porogen network attached to walls of the cells of the multicellular frame. The method also includes applying a solution to the suspended fused porogen network in the cells of the multicellular frame to percolate the suspended fused porogen network, curing the solution, and removing the suspended fused porogen network from the multicellular frame resulting in porous septum membranes of the cured solution in cells of the multicellular frame.

    Manufacturing impact absorbing structures for an athletic helmet

    公开(公告)号:US10342283B2

    公开(公告)日:2019-07-09

    申请号:US15399044

    申请日:2017-01-05

    Applicant: VICIS, Inc.

    Abstract: A garment worn by a wearer has an exterior shell and an interior shell with various impact absorbing material between the exterior shell and the interior shell. The impact absorbing material includes multiple structures, such as rods or filaments, capable of deforming when force is applied then returning to its state prior to application of the force. In various embodiments, the impact absorbing material is manufactured using injection molding to allow positioning of various structures in the impact absorbing material relative to each other during manufacture. During manufacturing, one or more living hinges are included in portions of the impact absorbing material to allow certain portions of the impact absorbing material to be accurately positioned relative to each other. Other manufacturing methods may be used, such as three-dimensional printing may be used to include structures in the impact absorbing material.

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