CONTINUOUS LIQUID INTERFACE PRODUCTION WITH FORCE MONITORING AND FEEDBACK

A method of making a three-dimensional object is carried out by: (a) providing a carrier and an optically transparent member having a build surface, the carrier and the build surface defining a build region therebetween, the optically transparent member carrying a polymerizable liquid; (b) advancing...

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Bibliographische Detailangaben
1. Verfasser:	TRUONG, Ronald, A
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ADDITIVE MANUFACTURING TECHNOLOGY ADDITIVE MANUFACTURING, i.e. MANUFACTURING OFTHREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVEAGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING,STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING APPARATUS SPECIALLY ADAPTED THEREFOR CASTING CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER MATERIALS THEREFOR ORIGINALS THEREFOR PERFORMING OPERATIONS PHOTOGRAPHY PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES,e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTORDEVICES PHYSICS POWDER METALLURGY SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING WORKING METALLIC POWDER WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	A method of making a three-dimensional object is carried out by: (a) providing a carrier and an optically transparent member having a build surface, the carrier and the build surface defining a build region therebetween, the optically transparent member carrying a polymerizable liquid; (b) advancing the carrier and the optically transparent member away from one another to draw the polymerizable liquid into the build region; then (c) optionally, partially retracting the carrier and the optically transparent member back towards one another; and then (d) irradiating the build region with light to form a growing three-dimensional object from the polymerizable liquid; and then (e) cyclically repeating steps (b) to (d) while maintaining a continuous liquid interface between the growing three-dimensional object and the optically transparent member until at least a portion of the three-dimensional object is formed, while during at least some of the cyclically repeatings: (i) monitoring a transient increase in tension between the carrier and the build surface through the growing three-dimensional object during the advancing step (b), and optionally monitoring a transient increase in compression between the carrier and the build surface through the growing three dimensional object during the partially retracting step (c); and then, when the transient increase in tension has substantially subsided, (ii) initiating the partially retracting step (c) when present, or initiating the irradiating step (d).