摘要
由于自由曲面的几何复杂性,其数控加工的刀具干涉判别和刀具选取往往依靠数控机床编程工程师的经验,致使加工的安全性、精度、效率及可靠性得不到有效保证。采用改进的遗传算法获取自由曲面的点云数据,在自主开发的系统中重构自由曲面。研究自由曲面加工刀位面生成的几何机理,根据刀具类型和几何尺寸,自动生成自由曲面数控加工的刀位面,可视化判别是否发生刀具干涉。将改进的快速排序算法应用到智能选刀模块,通过对常用类型和尺寸的刀具进行干涉排查,在避免干涉的前提下,智能选取最优化的加工刀具。对三种加工方案进行了测试,验证了智能选刀方法的正确性。
As the geometric complexity of free-form surface,the NC machining tool interference identification and tool selection often rely on the experience of the programmer,resulting in processing of security,accuracy,efficiency and reliability can not be effectively guaranteed.An improved genetic algorithm is applied to get point cloud data and free-form surface is reconstructed.Cutter location surface is automatically generated according to tool type and geometry,and determine whether interference occurred.Quick sort algorithm is applied to intelligent tool selection module,the optimize tool can be selected.The tool is of high-efficiency and high precision,and interference is avoided.
出处
《组合机床与自动化加工技术》
北大核心
2011年第2期21-23,共3页
Modular Machine Tool & Automatic Manufacturing Technique
基金
广东省2010自然基金博士启动基金资助(10451040504004989)
广州城市职业学院2009年院级科研立项(609211)
关键词
自由曲面
智能选刀
刀具干涉
刀位面
快速排序
free-form surface
intelligent selecting tool
tool interference
cutter location surface
quick sort
