A hybrid filling path generation method in arc fuse additive manufacturing technology

Abstract

The present invention relates to providing a hybrid filling path generation method in the arc fuse additive manufacturing technology, which traverses the data points of the edge contour of the section and the edge of the cavity area and deletes the collinear points on the contour, and divides the data points on the contour in order Sorting clockwise or counterclockwise, according to the welding wire material used for surfacing, set the distance d of the contour offset, take the edge of the section as the outer contour, and the edge of the cavity area as the inner contour, distinguish and judge the inner contour and outer contour, and the outer contour goes inward one by one Offset, the inner contour is gradually offset outward until the intersection stops, and the blank area between the innermost outer contour and the outermost inner contour is calculated according to the intersection point, and all blank areas are filled with a reciprocating straight line. The method uses a mixed filling path, which can fill complex areas with cavities, ensures the quality of the outer surface of the parts, reduces the number of times and empty strokes of the welding torch and improves the efficiency of algorithm execution.

Description

technical field [0001] The invention belongs to the field of additive manufacturing, and in particular relates to a method for generating a mixed filling path in an arc fuse additive manufacturing technology. Background technique [0002] The general process of arc fuse additive manufacturing is: first obtain a 3D model through 3D solid scanning or direct modeling, then slice the 3D model into layers with a certain thickness through software, and then melt the metal wire or metal powder by the welding arc, Layer by layer from bottom to top according to the established forming path to form dense three-dimensional parts. [0003] With the continuous deepening of the research and application of arc fuse additive manufacturing, the software is more and more important to the trajectory planning of the three-dimensional model section. The planning strategy of the section scanning path will have a great impact on the speed and quality of the forming. A reasonable path It can reduc...

AI Technical Summary

Problems solved by technology

[0004] When there is a hollow area in the section of the 3D model, the existing path planning is to cross the hollow area by increasing the number of welding torch arc ignition times and empty strokes. This method is inefficient and the quality of the outer surface is not high.

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