6Liu Yadong, Guo Xingui, Li Wei, et al. An intelligent NC program processor for CNC system of machine tool[ J]. Robotics and Computer Integrated Manufacturing, 2007,23 ( 2 ) : 160 - 169.
7W B Lee, D Dao J G Li. An NC tool path translator for virtual machining of precision optical products[J]. Journal of Materials Processing Technology, 2003(140):211-216.
