A Surface Layering Approach for Additive Manufacturing

Abstract

The invention belongs to the technical field of additive manufacturing, and discloses a curved surface layering method suitable for additive manufacturing, which comprises the following steps of: (1)determining the growth direction of a part to be layered and drawing a growth line; (2) solving an intersection point of the growth line and the surface boundary of the to-be-layered part, connectingthe obtained intersection point into line segments, and solving the length of each line segment; (3) determining the number of layers according to the length of each line segment and the thickness ofa single layer, layering the to-be-layered part by adopting an equal-layer-thickness layering mode or a variable-layer-thickness layering mode, recording coordinate values of division points, and determining the number of layers where each division point is located; and (4) storing the division points of each layer according to a preset sequence, solving boundary points of each layer, forming point clouds of each curved surface layer by the division points and the boundary points, and forming the curved surface layer by the point clouds of each layer, thereby finishing curved surface layering.The efficiency is improved, the flexibility is good, and the method is suitable for curved surface division of parts of any shape.

Description

technical field [0001] The invention belongs to the technical field related to additive manufacturing, and more specifically relates to a curved surface layering method suitable for additive manufacturing. Background technique [0002] Additive manufacturing is a kind of method that is completely opposite to the traditional material "removal" processing method. By adding materials, based on the 3D CAD model data, it usually adopts a layer-by-layer manufacturing method to directly manufacture a 3D physical model that is completely consistent with the corresponding mathematical model. One of the key technologies of the manufacturing method is the three-dimensional solid layering technology. At present, most of the layering methods used in additive manufacturing are plane layering, that is, layering based on the Z-direction or multi-direction using a section plane. This layering method It is simple and fast, but it can only be used to manufacture parts with simple appearance an...

AI Technical Summary

Problems solved by technology

However, this method does not give a specific surface layering strategy, and it cannot truly realize the surface layering additive manufacturing of parts with different shapes. If an inappropriate surface layering method is used, the printing efficiency will still be reduced and the forming quality will be poor. , mechanical properties do not meet the requirements and other issues

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