Seam concealment for three-dimensional models
First Claim
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1. An extrusion-based digital manufacturing system for building a three-dimensional part, the system comprising:
- a computer programmed to;
generate a first tool path for a sliced layers of a digital representation of a three-dimensional model;
adjust the first tool path to a second tool path that is configured to substantially conceal a seam at a perimeter of the corresponding layer of the three-dimensional part; and
generate instructions corresponding to the second tool path;
a platen;
an extrusion head configured to move in a build plane; and
a controller configured to direct the extrusion head to deposit a material to build the three-dimensional model in a layer-by-layer manner in a build plane tool path in the build plane corresponding to the second tool path based on the instructions, wherein the build plane tool path comprises;
an outgoing segment;
a contour segment having a first end extending from the outgoing segment, and a second end; and
an incoming segment extending from the second end of the contour segment, wherein the incoming segment overlaps a portion of the outgoing segment to define an interior region that is enclosed by the build plane tool path, and wherein the outgoing segment and the incoming segment are each partially located within the enclosed interior region.
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Abstract
A three-dimensional model built with an extrusion-based digital manufacturing system, and having a perimeter based on a contour tool path that defines an interior region of a layer of the three-dimensional model, where at least one of a start point and a stop point of the contour tool path is located within the interior region of the layer.
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Citations
13 Claims
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1. An extrusion-based digital manufacturing system for building a three-dimensional part, the system comprising:
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a computer programmed to; generate a first tool path for a sliced layers of a digital representation of a three-dimensional model; adjust the first tool path to a second tool path that is configured to substantially conceal a seam at a perimeter of the corresponding layer of the three-dimensional part; and generate instructions corresponding to the second tool path; a platen; an extrusion head configured to move in a build plane; and a controller configured to direct the extrusion head to deposit a material to build the three-dimensional model in a layer-by-layer manner in a build plane tool path in the build plane corresponding to the second tool path based on the instructions, wherein the build plane tool path comprises; an outgoing segment; a contour segment having a first end extending from the outgoing segment, and a second end; and an incoming segment extending from the second end of the contour segment, wherein the incoming segment overlaps a portion of the outgoing segment to define an interior region that is enclosed by the build plane tool path, and wherein the outgoing segment and the incoming segment are each partially located within the enclosed interior region. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An extrusion-based digital manufacturing system for building a three-dimensional part, the system comprising:
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a computer programmed to; generate a first tool path for a sliced layers of a digital representation of a three-dimensional model; adjust the first tool path to a second tool path that is configured to substantially conceal a seam at a perimeter of the corresponding layer of the three-dimensional part; and generate instructions corresponding to the second tool path; a surface configured to support the three-dimensional part; an extrusion head configured to move in a build plane; and a controller configured to direct the extrusion head to deposit a material to build the three-dimensional model in a layer-by-layer manner in a build plane tool path in the build plane corresponding to the second tool path based on the instructions, wherein the build plane tool path comprises; a segment comprising a perimeter of the build plane tool path in a layer, the segment further comprising a first end portion and a second end portion wherein the first end portion and second end portion overlap within an interior region defined by the segment comprising the perimeter of the build plane tool path in the layer. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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Specification