Slice scanning processing method and system for three-dimensional object manufacturing

Abstract

A slice scanning processing method and system for three-dimensional object manufacturing, wherein the method includes the steps of: offsetting the original outline to a solid part to obtain an offset outline; performing Boolean operations on the offset outline to obtain at least one filling path; The filling path judges whether it satisfies the condition that it is opposite to the predefined trend of the outer contour in the above original contour, and whether the number of the included contours is even; if it is satisfied, the main skeleton line of the filling path is extracted, and the main skeleton line is used as the Scanning path; otherwise, the filling path is used as the area to be scanned. The slice scanning processing method and system for three-dimensional object manufacturing of the present invention overcomes the disadvantages of the traditional method that the scanning of some areas is missing due to the offset of the outline, thereby affecting the scanning accuracy. Therefore, the slice scanning processing method and system for manufacturing a three-dimensional object of the present invention greatly improves the scanning accuracy of the three-dimensional object.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing, and in particular relates to a slice scanning processing method and system for three-dimensional object manufacturing. Background technique [0002] Additive Manufacturing technology (Additive Manufacturing, referred to as AM) is an advanced manufacturing technology with distinctive features such as digital manufacturing, high flexibility and adaptability, direct CAD model drive, fast speed, and rich and diverse material types. The degree of limitation does not require any tooling and molds, so the application range is very wide. Selective Laser Melting (SLM) is one of the additive manufacturing technologies that has developed rapidly in recent years. It uses powder materials as raw materials and uses laser to scan the cross-section of a three-dimensional entity layer by layer to complete prototype manufacturing. The complexity of the shape is limited, no tooling and molds are req...

AI Technical Summary

Problems solved by technology

In the prior art, the offset of the outline is generally realized by using line segment offset or point offset. However, since the slice layer often has thin walls or sharp areas, some areas in the slice layer offset by the above method are relatively narrow. Self-intersection occurs and is disposed of, resulting in a part of the slice layer that cannot be scanned and filled due to being disposed of, which affects the molding accuracy

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