Continuous double-serrated path filling method for deposition modeling

Abstract

The invention provides a continuous double-serrated path filling method for deposition modeling. The method comprises the following steps that under the condition of not conducting graphic decomposition, discontinuous single-serrated paths at the interval equal to the diameter d of a nozzle are generated in a slice according to a given angle, and internal and external bias is conducted to generate discontinuous double-serrated paths; the discontinuous double-serrated filling paths are connected into a local continuous double-serrated path according to the connectable relation between the discontinuous double-serrated filling paths; all paths are connected in sequence according to the connectable relation between a double-layer contour and the local continuous double-serrated path a global continuous path; and finally path optimization is conducted. For an arbitrary connected area without islands, one continuous double-serrated linear filling path can be generated according to the set angle under the condition of not conducting polygonal decomposition, opening, closing and jumping of the nozzle are avoided in the printing process, the printing time is shortened, and the printing directions of the paths on different layers can be adjusted as required to achieve the effect of interlayer enhancement.

Description

technical field [0001] The invention relates to the field of 3D printing, in particular to a continuous double zigzag path filling method for deposition modeling. Background technique [0002] As a technology of 3D printing, deposition modeling is widely used in medicine, architecture, model manufacturing and other fields. This technology extrudes the material in a fluid state through a nozzle and solidifies it on a flat plate, and accumulates layers into a three-dimensional model. The printing quality of a 3D model is affected by multiple parameters, such as material, printing temperature, layer thickness, printing speed, printing path, etc. [0003] The strength of the printed material largely determines the strength of the printed component. Researchers improve the strength of components by applying continuous fiber filaments, such as applying continuous carbon fibers in fused deposition modeling, applying continuous steel strands in 3D printed concrete, etc., but many ...

AI Technical Summary

Problems solved by technology

However, the polygon decomposition algorithm can effectively decompose polygons, and the algorithm may not be suitable for complex graphics with smooth boundaries or continuous concave corners in a small area

Also, the algorithm's hole contours are not connected with internal paths, therefore, the algorithm does not achieve global continuous filling

And in the special case that a connected two-dimensional area may be divided into several sub-areas by the outer contour, the algorithm is not applicable

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