激光选区熔化成型零件支撑结构优化设计

张国庆; 杨永强; 张自勉; 宋长辉; 王安民; 余家阔

doi:doi:10.3788/cjl201643.1202002

中国激光, 2016, 43 (12): 1202002, 网络出版: 2016-12-09

激光选区熔化成型零件支撑结构优化设计下载： 645次

Optimal Design of Support Structures in Selective Laser Melting of Parts

论文大纲

张国庆 ^1,*杨永强 ¹张自勉 ¹宋长辉 ^1,2王安民 ¹余家阔 ²

作者单位

¹ 华南理工大学机械与汽车工程学院, 广东广州 510640

² 北京大学第三医院运动医学研究所, 北京 100083

激光技术激光选区熔化支撑结构翘曲变形优化设计 laser technique selective laser melting support structure warping deformation optimal design

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摘要

激光选区熔化（SLM）成型零件过程中常出现零件的翘曲变形，这与零件支撑的添加有关。因此，有必要对SLM成型零件支撑添加方式进行研究。通过对不同支撑结构SLM成型零件的成型效果进行研究，发现在相同支撑参数条件下，支撑片分割未倾斜支撑在成型零件时具有较好的成型效果；零件使用的支撑高度越高，零件越容易翘曲。通过优化支撑结构，发现采用分块0°倾斜导热支撑可以有效地减小零件的翘曲变形。这为SLM成型高精度零件提供了参考。

Abstract

Warping deformation often occurs during the process of selective laser melting (SLM) of parts, which is related to addition of part supports. Therefore, it is necessary to investigate the addition manner of part supports in the SLM process. The molding effects in the SLM of parts with different support structures are investigated and one found that, under the condition of same support parameters, the support sheet which is separated and non-inclined has better molding effects; the larger the height of support structure is, the stronger the warping deformation is. After the optimization of support structures, it is found that the separated and non-inclined support structure mixed with heat conduction columns can effectively reduce the warping deformation of parts. This study provides a reference basis for the molding of high precision parts by SLM.

参考文献

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张国庆, 杨永强, 张自勉, 宋长辉, 王安民, 余家阔. 激光选区熔化成型零件支撑结构优化设计[J]. 中国激光, 2016, 43(12): 1202002. Zhang Guoqing, Yang Yongqiang, Zhang Zimian, Song Changhui, Wang Anmin, Yu Jiakuo. Optimal Design of Support Structures in Selective Laser Melting of Parts[J]. Chinese Journal of Lasers, 2016, 43(12): 1202002.

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