and  so  on  air  operated  as  well  as  precision  machinery  technologies.The  numerical
control  machine  high  accuracy,  the  high  efficiency  had  decided  the  development
numerical  control  machine  is  the  current  Chinese  manufacturing  industry
technological  transformations  way  that  must  be  taken,  will  be  the  future  factory
automation foundation.

Key word：trend of development ，principle，numerical control machine