3D weaving path generation method for fused filament manufacturing

Abstract

The invention relates to a 3D weaving path generation method for fused filament manufacturing. The method comprises the following steps that three 3D weaving path control parameters including a surface mesh model, layer thickness and packing density, nozzle diameter and the number of wires are input; after layering of the input model is completed by adopting a conventional uniform slicing method, an internal weaving path and an outer contour path with specific filling density, a processing sequence of the internal weaving path and the outer contour path, and material extrusion amounts corresponding to the internal weaving path and the outer contour path are generated respectively, so that a 3D weaving path is obtained, the internal weaving path is of a multi-layer structure, and the layers are mutually staggered. The method is suitable for molten filament manufacturing and printing equipment of various materials, on the basis of ensuring the minimum post-processing workload, an interlayer structure similar to 3D weaving is generated, an interlayer interlocking structure is formed, the interlocking structure between layers is achieved, and the anisotropy of an obtained printed piece can be effectively reduced.

Description

technical field [0001] The invention relates to the field of additive manufacturing, and proposes a method for generating a 3D weaving path for fused filament manufacturing. Background technique [0002] Fused Filament Fabrication (Fused Filament Fabrication, FFF) is a rapid prototyping method widely used in additive manufacturing (also known as 3D generation). to the molten state, and extruded by the nozzle onto the generation platform to generate physical objects layer by layer. FFF is easy to operate and maintain, economical and cost-effective compared to other major 3D generation methods, so it is widely used in the 3D generation industry. [0003] The FFF process usually uses continuous polymer filament fibers as the generating material, and the 3D model is manufactured by layer-by-layer accumulation method. Since the filament has obvious difference in axial and radial strength, the model made of filament bonding It usually shows anisotropy, the connection strength wi...

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