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Design method of easily-removable support structure for SLM-manufactured metal parts

A support structure and design method technology, applied in the direction of improving process efficiency and energy efficiency, can solve problems affecting continuous processing, collapse of overhanging structures, etc., and achieve the effect of simple and practical method, low cost, and easy removal

Active Publication Date: 2014-07-16
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The so-called limit inclination angle, that is, when the inclination angle is less than a certain value, the overhanging structure will collapse, affecting continuous processing

Method used

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  • Design method of easily-removable support structure for SLM-manufactured metal parts
  • Design method of easily-removable support structure for SLM-manufactured metal parts
  • Design method of easily-removable support structure for SLM-manufactured metal parts

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Embodiment Construction

[0027] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0028] The structure diagram of this embodiment is as follows figure 1 , giving an example of such a overhanging surface. The main part entity 1 has two bosses, and the size reaches the order of tens of millimeters. In this order of magnitude, an auxiliary forming structure must be added to ensure the molding quality and dimensional accuracy of the bosses. Wait. Therefore, it is necessary to make necessary supports under the overhanging surface of the boss to ensure the shape. Part 2 in the figure is the supporting structure. After the SLM process is completed, the parts are taken out, and then such supports are removed to obtain the boss and overhanging surface structure.

[0029] In order to increase the ease of removal of the support, the internal structure of the support is also designed, such as figure 2 As shown, 1 is the part entity, 3 is one ...

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Abstract

A design method of an easily-removable support structure for SLM-manufactured metal parts is applied to the design of supports for the structures such as suspended planes and surfaces in the process of producing metal parts by SLM (selective laser melting), so that the surfaces can be formed, and stability of the structures on the surfaces and forming quality can meet the technical requirements. A meshed thin-walled structure support is designed by the design method; a saw-toothed structure is designed at the connection of a support and a solid body. The meshed thin-walled structure support has the advantages that weight of the support and even consumption of powder are decreased; forming strength of the support suspended surfaces is met, and the support is easy to remove by mechanical methods; manufacturing time of the support is shortened, and efficiency is improved. The saw-toothed structure has the advantages that strength of the connection of the support with the solid body is decreased, and the influence of many supports upon the surface quality of the formed surfaces after removal is avoided. The support structure is easy to impellent and to produce and is easy to remove during the post-treatment process, the surface roughness of the support faces can be minimized, and the design method is suitable for mass production.

Description

technical field [0001] The invention proposes an easy-to-remove support structure design method applied in the process of SLM manufacturing metal parts, which is mainly used to select the support of the suspended plane and curved surface in the melting manufacturing process, so as to ensure the forming of the surface and the stability of the structure above the surface to achieve forming Quality and technical requirements, belonging to the field of rapid prototyping in laser advanced manufacturing. Background technique [0002] At present, 3D printing technology is very hot and has become the development trend of advanced manufacturing. In fact, it belongs to the category of rapid prototyping technology. It integrates modern scientific and technological achievements such as CAD technology, numerical control technology, laser technology and material technology, and is an important part of advanced manufacturing technology. [0003] Rapid prototyping technology is developing ...

Claims

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Application Information

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IPC IPC(8): B22F3/105
CPCY02P10/25
Inventor 张冬云李丛洋曹玄扬张晖峰
Owner BEIJING UNIV OF TECH
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