Platen planarizing process for additive manufacturing system
First Claim
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1. A method for printing a three-dimensional part with an additive manufacturing system having a platen with a platen surface, the method comprising:
- mapping a topography of the platen surface, to locate a peak height of the platen surface;
calculating a height of a sacrificial planarizing part as a function of the located peak height of the platen surface;
generating a digital model of the sacrificial planarizing part based on the calculated height and the peak height of the platen surface;
printing the sacrificial planarizing part with the additive manufacturing system based on the generated digital model of the planarizing part, wherein the printed planarizing part covers the peak height of the platen surface and has a substantially-planar top surface in a build plane, and a bottom surface that substantially mirrors the mapped topography of the platen surface; and
printing the three-dimensional part over the substantially-planar top surface of the printed planarizing part.
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Abstract
A method for printing a three-dimensional part with an additive manufacturing system, the method comprising generating and printing a planarizing part having a substantially-planar top surface relative to a build plane, and a bottom surface that substantially mirrors a topography of a platen surface, and printing the three-dimensional part over the substantially-planar top surface of the printed planarizing part.
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Citations
20 Claims
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1. A method for printing a three-dimensional part with an additive manufacturing system having a platen with a platen surface, the method comprising:
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mapping a topography of the platen surface, to locate a peak height of the platen surface; calculating a height of a sacrificial planarizing part as a function of the located peak height of the platen surface; generating a digital model of the sacrificial planarizing part based on the calculated height and the peak height of the platen surface; printing the sacrificial planarizing part with the additive manufacturing system based on the generated digital model of the planarizing part, wherein the printed planarizing part covers the peak height of the platen surface and has a substantially-planar top surface in a build plane, and a bottom surface that substantially mirrors the mapped topography of the platen surface; and printing the three-dimensional part over the substantially-planar top surface of the printed planarizing part. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for printing a three-dimensional part with an additive manufacturing system having a platen with a platen surface, the method comprising:
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mapping a topography of the platen surface, to determine a peak height of the platen surface; calculating a height for a sacrificial planarizing part as a function of the determined peak height and at least one slice thickness for the planarizing part; generating a sliced, multi-layer digital model of the sacrificial planarizing part having a substantially-planar top surface at the calculated height, and a bottom surface that mirrors the mapped topography of the platen surface; and printing the sacrificial planarizing part with the additive manufacturing system based on the generated digital model of the planarizing part. - View Dependent Claims (11, 12, 13, 14)
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15. An object printed with an additive manufacturing system having a platen with a platen surface, the object comprising:
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a three-dimensional part; optionally, a support structure for the three-dimensional part, wherein the three-dimensional part and the optional support structure have a bounding box in a build plane; and a sacrificial, planarizing part having a plurality of layers, the sacrificial, planarized part comprising; a top surface on which one or both of the three-dimensional part and the optional support structure are printed, wherein the top surface is substantially planar in the build plane and covers the platen surface; a bottom surface that substantially mirrors a topography of the platen surface on which the planarizing part is printed, wherein the bottoms surface is askew from the top surface; and a cross-section in the build plane defined at least in part by the bounding box wherein the three-dimensional part is printed on the sacrificial, planarized part. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification