PROCESS AND FREEFORM FABRICATION SYSTEM FOR PRODUCING A THREE-DIMENSIONAL OBJECT
First Claim
1. A process for producing at least one three-dimensional object, or for preparing the production thereof, said production process being of a type comprising:
- providing a material to be solidified;
delivering electromagnetic radiation or synergistic stimulation in a pattern or an image to a building region for solidifying said material;
wherein said delivering of electromagnetic radiation or synergistic stimulation is performed selectively to a defined area or volume of said material to be solidified;
wherein said production or said preparation process includes the steps of;
performing a virtual or actual solidification step, in which the degree of either out-shining electromagnetic radiation or synergistic stimulation towards outside regions, or in-shining electromagnetic radiation or synergistic stimulation into internal regions respectively across a border region or border regions of a three-dimensional object to be constructed is observed or determined, andadapting the energy density of electromagnetic radiation or synergistic stimulation in said border region(s) in response to said observed or determined degree of out- or in-shining across the border region(s).
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Abstract
The present invention provides a process for producing at least one three-dimensional object, comprising: providing a material to be solidified; delivering electromagnetic radiation and/or synergistic stimulation in a pattern or an image to a building region for solidifying said material; wherein said delivering of electromagnetic radiation and/or synergistic stimulation is performed selectively to a defined area or volume of said material to be solidified; and wherein an energy density of electromagnetic radiation and/or synergistic stimulation is controlled and/or adjusted in a border region of said pattern or image and/or is varied in border regions of patterns or images of different building regions of said material, to have an energy density different from the building region other than said border region(s), wherein the controlling and/or adjustment is dependent on, alone or in combination: (a) intensity of electromagnetic radiation and/or synergistic stimulation delivered to said defined area or volume of said material to be solidified; (b) total shape or contour shape of said defined area or volume of said material to be solidified; (c) size of said defined area or volume of said material to be solidified; and (d) material to be solidified. A device is provided likewise.
56 Citations
20 Claims
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1. A process for producing at least one three-dimensional object, or for preparing the production thereof, said production process being of a type comprising:
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providing a material to be solidified; delivering electromagnetic radiation or synergistic stimulation in a pattern or an image to a building region for solidifying said material; wherein said delivering of electromagnetic radiation or synergistic stimulation is performed selectively to a defined area or volume of said material to be solidified; wherein said production or said preparation process includes the steps of; performing a virtual or actual solidification step, in which the degree of either out-shining electromagnetic radiation or synergistic stimulation towards outside regions, or in-shining electromagnetic radiation or synergistic stimulation into internal regions respectively across a border region or border regions of a three-dimensional object to be constructed is observed or determined, and adapting the energy density of electromagnetic radiation or synergistic stimulation in said border region(s) in response to said observed or determined degree of out- or in-shining across the border region(s). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A freeform fabrication system for producing at least one three-dimensional object, or for preparing the production thereof, said freeform fabrication system being of a type comprising:
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a material to be solidified; a device for delivering electromagnetic radiation or synergistic stimulation in a pattern or an image to a building region for solidifying said material, such that said electromagnetic radiation or synergistic stimulation is delivered selectively to a defined area or volume of said material to be solidified; wherein said freeform fabrication system is adapted to perform a virtual or actual solidification step, in which the degree of either out-shining electromagnetic radiation or synergistic stimulation towards outside regions, or in-shining electromagnetic radiation or synergistic stimulation into internal regions respectively across a border region or border regions of a three-dimensional object to be constructed is observed or determined, and wherein said freeform fabrication system further comprises a control unit that adapts the energy density of electromagnetic radiation or synergistic stimulation in said border region(s) in response to said observed or determined degree of out- or in-shining across the border region(s). - View Dependent Claims (14)
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15. A process for producing at least one three-dimensional object, comprising:
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supplying a reference energy density to a reference border region of a solidified area of a reference solidifiable material based on a reference pattern of solidification energy, wherein the reference pattern defines the reference border region, a reference total shape of the solidified area, a reference contour shape of the solidified area, and a reference size of the solidified area; and observing or determining at least one of a degree of out-shining electromagnetic radiation or synergistic stimulation across the border region towards regions outside of the border region and in-shining electromagnetic radiation or synergistic stimulation across the border region toward regions internal of the border region. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification