Solid freeform fabrication of shelled objects
AssigneeObjet Ltd.
InventorsDaniel Dikovsky, Avraham Levy, Eduardo Napadensky
Life of this patent
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Abstract
A method of layerwise solid freeform fabrication is disclosed. The method comprises, for each of at least a few of the layers, dispensing and hardening at least a first modeling material and a second modeling material to form a core region and one or more envelope regions at least partially surrounding the core region. In some embodiments, the ratio between the elastic moduli of adjacent regions, when hardened, is from about 1 to about 20.
Claims30
A method of layerwise solid freeform fabrication, comprising, for each of at least a few of the layers:
- dispensing and hardening at least a first modeling material and a second modeling material to form a core region and one or more envelope regions at least partially surrounding said core region,
- thereby fabricating an object being constructed from a plurality of layers and a layered core constituting core regions and a layered shell constituting envelope regions, wherein a width of said envelope region is calculated separately for each layer.
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A computer software product, comprising a computer-readable medium in which program instructions are stored, which instructions, when read by a computerized controller of a solid freeform fabrication system, cause said system to dispense and harden at least a first modeling material and a second modeling material to form a core region and one or more envelope regions at least partially surrounding said core region, thereby to fabricate an object being constructed from a plurality of layers and a layered core constituting core regions and a layered shell constituting envelope regions, wherein a width of said envelope region is calculated separately for each layer.
A layered polymeric structure fabricated by a solid freeform fabrication method, comprising a layered core at least partially surrounded by one or more layered shells such that at least one layer of said core engages the same plane with a layer of at least one of said shells, wherein a ratio between elastic moduli of said core and said shell is from about 1 to about 20.
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Dependencies are inferred from the claim text.