机床数控系统的发展趋势
1952年第一台数控机床在美国问世，至今已有40多年的历史，计算机数控（CNC）从70年代中期出现，到现在也已有20多年了，数控技术日趋成熟。特别是近几年来微型计算机、微电子工业及电力电子工业的迅速发展，微型计算机与CNC技术的紧密结合，使得开发和生产CNC系统的技术被越来越多的自动化装备生产厂所掌握。因此，就当今全世界范围来说，CNC技术已经不再被少数几个国家的几个CNC系统生产厂所垄断。到80年代末，几乎每个工业发达的国家都有了自己的数控设备生产厂，生产满足各自国家数控机床及其他机械装备所需要的数控系统。甚至很多大型的数控机床生产厂都有自己的产品，并部分出售数控系统。因此，CNC系统生产厂之间的竞争为激烈，数控技术的发展进入了新的阶段。
当代数控技术的发展具有下述特点： (毕业设计)
1．广泛地应用微机资源
近年来被称为个人计算机（PC）的微型计算机发展很快，大规模集成电路制造技术的高速发速，使得PC的硬件结构做得很小。主CPU的运行速度越来越高。IPC386的主频是33MHz，IPC486、586的主频可达50～120MHz，新近Intel奔腾处理器（Pentium），主频已达450MHz。存储器容量也很大，体积很小，由于是大批量生产，使成本下降，可靠性提高。
NC systems development trends
From the 1952 first CNC machine in the United States was made more than 40 years has been in the history of computer numerical control (CNC) from the mid-1970s, and now also has been for more than 20 years, CNC technology matures. Especially in recent years micro-computer, power electronics and microelectronics industries to the rapid industrial development, micro-computer and the close integration of CNC technology, making development and production of CNC systems technology has been a growing number of factory automation equipment in hand. Therefore, the scope of today''s world, the CNC technology is no longer in a few countries in several CNC system monopolized by the factory. To the late 80s, almost every advanced industrial country has its own CNC equipment manufacturing plant, production of CNC machine tools to meet their respective countries and other machinery and equipment required by the NC system. Even many large-scale production of CNC machine tool plant has its own products and the sale of the CNC system. Therefore, the CNC system manufacturing plant for the fierce competition among, NC technology development has entered a new stage.
Contemporary NC technology to the development of the following characteristics:
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