Abstract：A three-dimensional laser cutting CNC system architecture with micro-step hardware interpolation as the core is proposed. The software tasks are analyzed and a real-time scheduling model of control functions is constructed. The real-time and multi-task coordinated control of the Windows platform is realized. Developed a micro-step hardware interpolation module based on DDA precision interpolation to meet the speed and accuracy requirements of motion control; built a core drive module to achieve interrupt response and servo control; combined space arc transfer theory and forwardbacktracking algorithm to develop the trajectory speed prediction and smoothing module; proposed the hardware frequency division adjustment method to realize the change of the feed rate. The 3D laser cutting numerical control system can realize high-speed and high-precision motion control, and the open structure of the combination of software and hardware improves the real-time performance of the system and the scalability of functions.
迟关心，吴湘，崔丽娟. 基于PC的三维激光加工数控系统构架与关键问题研究[J]. 航空制造技术, 2020, 63(23/24): 40-45.
CHI Guanxin，WU Xiang，CUI Lijuan. Research on Architecture and Key Issues of PC–Based 3D Laser Machining CNC System. Aeronautical Manufacturing Technology, 2020, 63(23/24): 40-45.
2020, 
