A Continuous Double Zigzag Path Filling Method for Depositional Modeling

Abstract

The invention is a continuous double zigzag path filling method for deposition molding, the method includes: generating discontinuous single zigzag paths at a given angle in a slice with a distance of nozzle diameter d without graphic decomposition , and perform internal and external bias to generate discontinuous double zigzag paths; according to the connectable relationship between discontinuous double zigzag filling paths, connect them into local continuous double zigzag paths; The connectable relationship connects all paths in order to generate a global continuous path; finally, path optimization is performed. For any connected area without islands, a continuous double zigzag straight line filling path can be generated according to the set angle without polygon decomposition, avoiding the opening, closing and jumping of the nozzle during the printing process, reducing printing Time, and the printing direction of different layer paths can be adjusted as needed to achieve the effect of interlayer strengthening.

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 molding. 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 e...

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

Images