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A high-efficiency scanning method for discontinuous filling laser additive manufacturing

A laser additive and scanning method technology, applied in the field of additive manufacturing, can solve the problem that the molding efficiency is difficult to meet the actual production needs, and achieve the effects of reducing part warpage, reducing temperature gradient, and ensuring accuracy

Active Publication Date: 2019-07-12
XI AN JIAOTONG UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the continuous improvement of industrial development for the efficiency of additive manufacturing, the existing molding efficiency has been difficult to meet the actual production needs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1, a high-efficiency scanning method for discontinuous filling laser additive manufacturing, comprising the following steps:

[0019] 1) First, the scanning single-layer information of the part along the Z direction is obtained through the data processing software, and the single-layer data is divided into contour data and filling data, wherein the filling data and contour data are the generated scanning path data;

[0020] 2) In the scanning of each single layer, continuous contour scanning is performed according to the obtained contour data, specifically: the stencil in the forming cavity is reduced by one layer thickness according to the layered data, and the laser beam is generated according to the generated contour data, The filling data and contour data are scanned sequentially to form a complete scanning single layer, and this process is repeated to form a certain thickness of the production base layer;

[0021] 3) When scanning the filling data, use t...

Embodiment 2

[0025] Embodiment 2, a high-efficiency scanning method for discontinuous filling laser additive manufacturing, comprising the following steps:

[0026] 1) First, the scanning single-layer information of the part along the Z direction is obtained through the data processing software, and the single-layer data is divided into contour data and filling data, wherein the filling data and contour data are the generated scanning path data;

[0027] 2) In the scanning of each single layer, continuous contour scanning is performed according to the obtained contour data, specifically: the stencil in the forming cavity is reduced by one layer thickness according to the layered data, and the laser beam is generated according to the generated contour data, The filling data and contour data are scanned sequentially to form a complete scanning single layer, and this process is repeated to form a certain thickness of the production base layer;

[0028] 3) When scanning the filling data, use t...

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Abstract

A high-efficiency scanning method for discontinuous filling laser additive manufacturing. Firstly, the scanning single-layer information of the part along the Z direction is obtained through data processing software, and the single-layer data is divided into contour data and filling data. The filling data and contour data are both It is the generated scanning path data; in the scanning of each single layer, continuous contour scanning is performed according to the obtained contour data; when the filling data is scanned, the laser power and spot are adjusted in real time by using the control program, so that the laser beam is The penetration depth of the production material is increased enough to penetrate the thickness of multiple layers, and only one filling scan and the contour scan of the corresponding number of layers are performed in multiple layers; after the filling data scanning is completed, the laser power is restored to the initial state through the control program , repeating until the part is finished, the present invention can greatly improve the molding efficiency of the manufacturing process under the premise of taking into account both the molding accuracy and the molding quality.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing, and in particular relates to a high-efficiency scanning method for discontinuous filling laser additive manufacturing. Background technique [0002] Laser additive manufacturing technology refers to the additive manufacturing technology that uses lasers as processing light sources. Due to the rich types of lasers that can be used, there are many types of materials produced, including liquid resin, polymer powder materials, metal powder materials, ceramic powder materials, etc. , Therefore, it has been widely used in various industries and fields. During the laser additive manufacturing process, the three-dimensional data model of the solid part is divided into two-dimensional vector data including contour and internal filling, and the laser spot focused on the surface of the molding material is filled and contour scanned layer by layer according to the path scanning algorithm. bon...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C64/00B29C64/153B22F3/105B33Y10/00B33Y50/00
CPCB33Y10/00B33Y50/00B22F10/00B22F10/36B22F10/366B22F10/25B22F10/28Y02P10/25
Inventor 曹毅田小永同治强石长全
Owner XI AN JIAOTONG UNIV
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