一、前言随着国民经济的发展,中国加入WTO以后,中国正向着“世界制造中心”的目标前进。数控技术在机械制造业的发展中起着举足轻重的作用。究其原因主要有:市场经济要求企业生产产品性能好、价格便宜、品种多样化、且不断改型,因而生产周期短,生产效率要求高,而仍采用以前的生产模式不能满足这些要求。数控加工就成了机械制造的主要加工手段,它综合应用了微电子技术、计算机技术和精密机械技术,广泛应用于数控机床及各种生产设备的柔性自动化控制,特别适用于机械制造业单件、小批量、复杂和精密的生产 I. Introduction With the development of the national economy, China has been moving toward the goal of “manufacturing center in the world” after China’s accession to the WTO. CNC technology plays a decisive role in the development of machinery manufacturing. The main reasons are: the market economy requires enterprises to produce good performance products, cheap, diversified varieties, and constantly modified, and thus short production cycle, high production efficiency, while still using the previous production model can not meet these requirements. CNC machining has become the main processing machinery manufacturing, which integrated the application of microelectronics, computer technology and precision machinery technology, widely used in CNC machine tools and flexible production of various types of automation equipment control, especially for machinery manufacturing single Small batch, complex and sophisticated production