五轴NC加工干涉检查与避免算法.pdfVIP

17 17 2006 9 NC 1 1 1 2 严思杰 　周云飞 　陈学东 　赖喜德 1. 华中科技大学国家数控系统工程技术研究中心, 武汉,430074 2. 华大学, 成都, 610039 :利用刀具刃口回转面在两刀位点间运动形成的包络面方程与CA D 模型面求交来 实现五轴NC 加工中干涉的判断与检验,依据检验结果对干涉进行处理,从而避免实际加工时 干涉的发生。该方法考虑了刀具运动路径上全部刀位点的刀具与工件的位置关系, 因而能够 实现刀位轨迹全过程的干涉检验, 避免了加工时对局部型面的破坏,有利于改善加工零件的表 面质量。实际计算验证了该方法的可行性和实用性,具有一定的理论和实际意义。 :CAD/CAM ;;;; :TG659　　　:1004 —132X(2006)17—1822—04 Research on Interference Check and Avoidance in Five- Axis NC Machining 1 1 1 2 Yan Sijie 　Zho Y nfei 　Chen X edong 　Lai Xide 1. National Research Center of NC System Engineering Technology, H azhong University of Science Technology, W han,430074 2. Xih a U niversity,Chengd ,610039 Abstract:This paper presented a method to solve the problems abo t five - axis NC machining in- terference, in w hich the intersections betw een the machining c tter movement envelope s rface and the CAD model s rface w ere calc lated to realize the j dgment and check of the interference in the movement of c tter, and then generated interfer - free c tter path. Beca se of considering the position relation abo t the c tter and the w orkpiece of the w hole c tter location points,the method can realize the interference check and avoidance on the w hole movement path, and can avoid the damage of the re- q ested s rface, so as to improve the machining q ality . T he calc lation example show s the method is practical and sef l. Key words:CAD/CAM ;five - axis machining ;path planning ;interference;envelope s rface 0　引言 ,, ,;③ 。 、, [1] [