Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
ADDITIVE MANUFACTURING USING A DYNAMICALLY GROWN BUILD ENVELOPE
Document Type and Number:
WIPO Patent Application WO/2018/132202
Kind Code:
A3
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.

Inventors:
REDDING MACKENZIE (US)
MAMRAK JUSTIN (US)
FIELDMAN ZACHARY (US)
Application Number:
PCT/US2017/064984
Publication Date:
September 13, 2018
Filing Date:
December 07, 2017
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
GEN ELECTRIC (US)
International Classes:
B29C64/153; B22F3/105; B23K26/34; B28B1/00; B29C64/205; B29C64/255; B29C64/268; B33Y10/00
Domestic Patent References:
WO2016020447A12016-02-11
Foreign References:
US20090068376A12009-03-12
US20160144429A12016-05-26
US5658412A1997-08-19
US20110259862A12011-10-27
US20150086409A12015-03-26
US20130234355A12013-09-12
US20170021455A12017-01-26
Attorney, Agent or Firm:
OVERBECK, Brian, P. et al. (US)
Download PDF: