公开(公告)号：US20160176114A1

公开(公告)日：2016-06-23

申请号：US14803679

申请日：2015-07-20

Applicant: NATIONAL APPLIED RESEARCH LABORATORIES

Inventor： Hsin-Yi TSAI ,  Min-Wei HUNG ,  Kuo-Cheng HUANG ,  Keng-Liang OU ,  Ching-Ching YANG

IPC: B29C67/00 ,  G05B19/4099

CPC classification number: B29C64/386 ,  B33Y50/02

Abstract: A system for online monitoring powder-based 3D printing processes and method thereof are disclosed. A uniform light source having a single wavelength provided by the system is irradiated onto the powder layer before and after applied with glue. Intensities of such reflected images are obtained and subtracted from each other in an image process procedure. A difference obtained through the subtraction is compared with an original 3D model in a computer. If any defect is found such as being larger than a threshold value, the powder-based 3D printing processes will be terminated. Therefore, the technical effects of online printing processes monitoring, time saving and printing resources saving will be achieved.

Abstract translation: 公开了一种用于在线监测基于粉末的3D印刷工艺及其方法的系统。 具有由系统提供的单一波长的均匀光源在施加胶之前和之后被照射到粉末层上。 在图像处理过程中获得并减去这些反射图像的强度。 通过减法获得的差异与计算机中的原始3D模型进行比较。 如果发现任何缺陷，例如大于阈值，则基于粉末的3D打印处理将被终止。 因此，将实现在线打印过程监控，节省时间和打印资源节约的技术效果。