网壳钢结构节点相贯线轨迹生成和校验方法
Generating and Checking Approach of Intersection Curve Cutting Trajectory for Latticed-shell Steel Structure Joints

针对现有网壳钢结构节点相贯线轨迹求解算法复杂及切割精度差等问题，研究复杂截面网壳钢结构节点相贯线切割轨迹生成和检验方法，提高钢结构节点制造效率和质量。在建立节点贯口相贯线解析模型的基础上，以支管母线运动方法构造复杂相贯曲线切割轨迹实时求解算法；以相邻模瓣端面对角顶点距离为依据生成切割轨迹校验文件。提出的方法用于带坡口复杂相贯线的粗插补轨迹数据求取和检验，为一种5自由度混联机器人提供切割轨迹数据。
The existing solving algorithm of intersection curve cutting trajectory for latticed-shell steel structure joints is complex and the cutting precision is low. In order to improve the manufacturing efficiency and quality of steel structure joint, a kind of approach for generating and checking intersection curve cutting trajectory of complex-section steel structure joint components is presented. Firstly, a real-time solving algorithm of complex intersection curve is derived from the movement of branch pipe generatrix with the analytical model, then the processing checking file of cutting trajectory is generated from the distance of section vertex on adjacent component. The proposed approach is applied to acquire rough interpolation trajectory data so that provid cutting trajectory data for a kind of 5 degrees of freedom hybrid robot