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

Abstract

The invention discloses a slice scanning processing method and system for manufacturing a three-dimensional object. The method comprises the following steps of: offsetting an original profile to a solid part to obtain an offset profile; carrying out Boolean operation on the offset profile to obtain at least one filling path; respectively judging whether each filling path meets the condition that the predefining direction is opposite to that of the outer profile in the original profile and the number of contained profiles is even; and when meeting the condition, extracting a main skeleton line of the filling path and using the main skeleton line as a path to be scanned; or, using the filling path as an area to be scanned. The slice scanning processing method and system disclosed by the invention have the advantages that the defect that loss of scanning of partial areas is caused by profile offsetting to influence the scanning accuracy in the traditional method is overcome, so that the scanning accuracy for the three-dimensional object is greatly increased.

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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