NURBS曲面无退刀双螺旋线轨迹规划法  

Non-retraction Double Spiral Tool-path Planning for a NURBS Surface

作　　者：徐立国[1] 赵继[1] 徐卫[2] 

机构地区：[1]吉林大学,长春130025 [2]空军航空大学,长春130022

出　　处：《中国机械工程》2006年第18期1924-1927,共4页China Mechanical Engineering

基　　金：吉林省科技发展计划重点项目(20040325)

摘　　要：从人工分片研磨抛光的机理出发,提出一套全新的双螺旋线轨迹规划算法。该算法产生的螺旋线轨迹起始并终止于子片的外边界,内旋、外旋螺旋线之间用S形回转轨迹圆滑连接,使得连接所有子片的研磨抛光路径成为可能,以实现整张曲面无退刀的分片加工策略,可消除表面撞痕,降低工件的表面粗糙度。用Matlab对算法进行了仿真,规划的加工轨迹达到了预期效果。Based on the principle of subdivision polishing, a novel double spiral tool-path planning algorithm was proposed. The tool path generated by this method starts and ends on the original border ofapatch. The screw in and screw out tool path are smoothly connected by an‘S＇ shaped returning sub path. So, it is possible to connect the adjacent tool-path easily and fulfill the machining strategy of subdivision polishing without tool retractions. The algorithm was verified with Matlab. The simulation shows that the tool path can eliminate the collisions and ensure lower roughness of work piece surface.

关 键 词：NURBS 刀具轨迹 残留高度 研磨 抛光 

分 类 号：TH164[机械工程—机械制造及自动化]