| 薄壁件选择性激光熔融的分区扫描路径规划 |
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| 作者姓名： | 邓洋洋 李维诗 |
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| 作者单位： | 合肥工业大学仪器科学与光电工程学院，测量理论与精密仪器安徽省重点实验室，安徽 合肥 230009 |
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| 摘 要： | 残余应力容易导致采用选择性激光熔融技术加工的薄壁件变形甚至开裂,为了减少残余应力并控制其分布,提出了一种基于中轴变换的分区扫描路径规划策略.首先对分层实体区域进行中轴变换,然后根据裁剪后的中轴将分层实体区域划分为主区域和连接区域,针对主区域和连接区域分别设计了正弦曲线形扫描路径和正三角网格式扫描路径,最后给出了一个典型...
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| 关 键 词： | 选择性激光熔融 薄壁件 分区扫描 中轴变换 路径规划 |
Partitioned scanning path planning for selective laser melting of thin-walled parts |
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| Authors: | DENG Yang-yang LI Wei-shi |
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| Affiliation: | School of Instrument Science and Opto-Electronics Engineering, Anhui Province Key Laboratory of Measuring Theory and Precision Instrument,
Hefei University of Technology, Hefei Anhui 230009, China |
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| Abstract: | Residual stresses in thin-walled parts manufactured with selective laser melting can lead to deformation and
even cracking in the part. A partitioned scanning path planning strategy based on medial axis transformation was
proposed to reduce the residual stress and control the distribution. Firstly, the medial axis transformation of the
layered solid area was computed, and then the layered solid area was divided into main areas and connecting areas,
according to the pruned medial axis. A sinusoidal scanning path and a regular triangle mesh scanning path were
designed for the main area and the connecting area, respectively. Finally, the result of a typical multi-connected and
thin-walled model was yielded. |
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| Keywords: | selective laser melting thin-walled parts partitioned scanning medial axis transformation path planning |
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