天津职业技术师范大学学报

针对五轴加工易出现干涉及路径规划不当影响加工质量的问题,研究了无干涉路径规划算法。分析了加工曲面曲率小于刀具半径和加工程序编制不当造成的干涉问题,给出了无干涉刀位点判定和运动干涉判定的方法。将无干涉路径规划算法和VERICUT自动生成的加工路径方法分别进行仿真,结果表明:采用本算法进行整体叶轮加工,无碰撞、过切和残留现象,明显优于VERICUT自动生成的加工程序。

The interference-free tool path planning algorithm is studied in five-axis machining due to the poor machining quality caused by machining interference and improper path planning. On the condition that the curvature of machined surface is less than tool radius as well as improper programming,the phenomenon of machining interference happens. In order to solve this problem,the interference-free cutter point and motion interference judgment were carried out. In addition,the tool path planning by adjusting the tool attitude angle was studied to improve the surface quality of blade finishing. Finally,interference-free path planning method is simulated as well as VERICUT with the automatic generation algorithms. Simulation results show that by using the algorithm discussed,no collision,over-cutting and residual phenomena is observed. The interference-free tool path planning algorithm is obviously superior to the automatically generated algorithm by VERICUT.