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A Surface Layering Approach for Additive Manufacturing

A technology of additive manufacturing and curved surfaces, which is applied in the field of surface layering in additive manufacturing, can solve problems such as no surface layering strategy, mechanical properties that do not meet the requirements, and reduced printing efficiency. The method of surface division is simple and easy. Implementation, the effect of improving accuracy

Active Publication Date: 2020-10-02
HUAZHONG UNIV OF SCI & TECH
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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

Method used

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  • A Surface Layering Approach for Additive Manufacturing
  • A Surface Layering Approach for Additive Manufacturing
  • A Surface Layering Approach for Additive Manufacturing

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Embodiment Construction

[0031] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0032] see figure 1 , the curved surface layering method suitable for additive manufacturing provided by the present invention, the curved surface layering method includes the following steps:

[0033] Step 1, building a 3D model of the parts to be layered.

[0034] Step 2, determine the growth direction of the part to be layered and draw the growth line.

[0035] Specifically, an appropriate...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T17/20
Inventor 张李超牛其华史玉升盛伟余圣甫宋波
Owner HUAZHONG UNIV OF SCI & TECH
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