自1984年和1985年两次召开“全国用微电子技术改造机械设备会议”以来,国内经济型数控技术发展很快。由于它使用简便、价格便宜,用它改造现有设备,投资少,见效快,深受中小企业及工人的欢迎,被称为“小改革、出大成效”的新技术。现在经济型数控不仅用于改造现有设备,而且许多机 Since 1984 and 1985 twice held the “national conference on the use of microelectronic technology to transform machinery and equipment”, the domestic economy of numerical control technology developed rapidly. Because it is easy to use, cheap, use it to transform existing equipment, less investment, quick, welcomed by small and medium enterprises and workers, known as the “small reform, big effect” of new technology. Now economical CNC is not only used to transform existing equipment, but also many machines