4Xu X W, Newman S T. Making CNC Machine Fools More Open, Interoperable and Intelligent a Review of the Technologies[J]. Computers in In dustry,2006,57 : 141-152.
5Kovacic M. Brezocnik M. Pahole I, et al. Evolutionary Programming of CNC Machines[J]. Journal of Materials Processing Technology, 2005, 164 - 165: 1379-1387.