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公开(公告)号：US20180169969A1
公开(公告)日：2018-06-21
申请号：US15380525
申请日：2016-12-15
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Johnny DELEON , William MURPHY , Stephanie Lynn DEPALMA , Brian PETERSON , Travis SANDS , Russell DENNISON , Stephen DEAK , Kevin MCEVOY
Abstract: The present disclosure generally relates to additive manufacturing of an object using both a digital light processing (DLP) projector and a focused energy source to irradiate a photopolymerizable material, and apparatuses and methods for the same. The DLP projector irradiates and cures an outer perimeter of the object, and the focused energy source irradiates and cures an inner region of the object. In a preferred embodiment, irradiation by both the DLP projector and the focused energy source occur from underneath a tank holding the photopolymerizable material and through a transparent window.
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公开(公告)号：US20180079148A1
公开(公告)日：2018-03-22
申请号：US15268192
申请日：2016-09-16
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Stephen Michael DEAK , Daniel JOERGER , Travis SANDS
CPC classification number: B33Y10/00 , B22F3/1055 , B22F2003/1056 , B22F2003/1057 , B29C64/135 , B29C64/153 , B29C64/264 , B29K2105/0058 , B33Y30/00 , B33Y50/02 , Y02P10/295
Abstract: The present disclosure generally relates to methods and apparatuses for additive manufacturing (AM) that utilize a pulsed laser to solidify a liquid photopolymer. The method includes scanning a first portion of the photopolymer with the laser at a first draw speed, wherein the first portion of the photopolymer corresponds to a first portion of the part that has a width less than a threshold width. The method also includes scanning a second portion of the photopolymer with the laser at a second draw speed that is greater than the first draw speed, wherein the second portion of the photopolymer corresponds to a second portion of the part that has a width greater than the threshold width.
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