Abstract: To make the sheet metal part with incision to be fabricated by integrated process of 5-axis CNC incremental forming and 5-axis laser cutting,a tool path generation algorithm for integrated process of 5-axis CNC incremental forming and 5-axis laser cutting was proposed based on Parasolid modeling kernel.The algorithm for incision feature recognition,extraction,filling up and surface reconstruction was given.Based on researching the algorithm of curve discrete and surface offsetting,a calculation method for forming tool location points,laser beam location points,pressing tool posture and laser beam posture was proposed by considering technological characteristics of 5-axis CNC incremental forming and 5-axis laser cutting.The algorithm was implemented by using Parasolid modeling kernel and OpenGL.The case study showed that the software system developed by using above algorithm could well realize the above functions and runs stably and reliably.

Key words: sheet metal part, incremental forming, laser cutting, tool path, CNC system

摘要： 为实现切口板材件的五轴数控渐进成形与五轴激光切割的集成制造,提出一种基于Parasolid建模核心的五轴数控渐进成形与五轴激光切割集成的切口板材件加工轨迹生成算法及实现方法。给出了切口特征识别与提取、切口特征填补与曲面重建等算法;在研究曲线离散、曲面偏置等算法的基础上,考虑五轴数控渐进成形与五轴激光切割工艺的特点,给出了数控渐进成形刀位点、激光束半径补偿、挤压工具姿态和激光束姿态计算的方法;同时利用Parasolid建模核心和OpenGL完成了上述算法的系统实现。算法应用实例表明,依据该算法所开发的软件系统能够很好地实现上述功能,运行稳定可靠。

关键词: 板材件, 渐进成形, 激光切割, 刀具轨迹, 数控系统