INFILL TECHNIQUES IN THREE-DIMENSIONAL PRINTING

摘要

In an aspect, infilling includes one or more the following characteristics: (i) adjacent rows and columns, which may be overlapping or non-overlapping; (ii) no sharp angle turns, i.e., no turns of ninety degree or less; and (iii) intersecting between infill patterns occurs from layer to layer (i.e., at offset z-axis positions). An infilling technique may also or instead include rotating the infill pattern about ninety degrees in some alternating fashion from layer to layer.

主权项

1. A method comprising:
depositing a perimeter of an object in a three-dimensional fabrication process, the perimeter including a two-dimensional cross section of a shell of the object at a first z-axis height; depositing a first infill layer for the perimeter, the first infill layer including a first plurality of lengths of build material spanning the perimeter in a first direction, wherein the first plurality of lengths include non-intersecting paths of build material containing a first group of vertices with no turns having an angle less than ninety degrees; depositing a second perimeter of the object, the second perimeter including a second two-dimensional cross section of the shell at a second z-axis height adjacent to the first z-axis height in the three-dimensional fabrication process; and depositing a second infill layer for the second perimeter, the second infill layer including a second plurality of lengths of build material, wherein the second plurality of lengths include non-intersecting paths of build material containing a second group of vertices with no turns having an angle less than ninety degrees, and wherein at least one of the second group of vertices overlaps with at least one of the first group of vertices to form a z-axis bond between the first infill layer and the second infill layer.