基于深度学习的孔特征可制造性分析方法

针对传统基于知识库及规则库的零件可制造性分析方法柔性差,以及现有基于深度学习的可制造性分析方法无法给出零件具体不可制造原因的现状,提出一种基于深度学习的零件可制造性分析方法.首先,通过数字化建模技术构建大量带有具体可制造性类别标签的三维CAD模型,并进行点云提取,从而构建深度学习所需数据集;然后,基于PointNet网...

Deep learning based manufacturability analysis approach for hole features

In view of the current situation that the traditional methods of manufacturability analysis based on knowledge and rules are not flexible and the existing methods of manufacturability analysis based on deep learning are unable to give the specific reasons for the non-manufacturability of parts,a method of manufacturability analysis based on deep learning was proposed.Firstly,a large number of CAD models with manufacturability category labels were constructed through digital modeling technology,and the point cloud was extracted to build the data set needed for deep learning.Then,based on the PointNet network,a deep learning network for hole feature manufacturability analysis was built,and the network training and parameter adjusting process were completed.Then,compared with the 3D-convolutional neural networks(3D-CNN),the deep learning network constructed in this paper exhibits better robustness and lower time complexity.Finally,the manufacturability analysis of hole feature in a sample part was carried out to identify the non-manufacturable hole feature,and the reason of non-manufacturability was explained.The experimental results show that the method can not only ensure high recognition accuracy,but also identify the reason why the feature cannot be manufactured,which is of greater application value.