数控车床-----外文翻译.doc

Numerical control is a form of programmable automation in which the processing equipment is controlled by means of numbers，letters，and other symbols．The numbers，letters，and symbols are coded in an appropriate format to define a program of instructions for a particular work part or job．When the job changes，the program of instructions is changed．The capability to change the program is what makes N／C suitable for low-and medium-volume production．It is much easier to write programs than to make major alterations of the processing equipment．
Number control lather main use to carry on a car to pare towards revolving body spare parts, the Tang pare, drill to pare, the Jiao pare, offend silk etc. process of work preface. General ability auto inside completion outside cylinder noodles, conic surface, surface of sphere, cylinder thread, slot and carry noodles etc. the slice of work preface pare to process.
The host is the topic that the number control lather and include a tool mach


数控是可编程自动化技术的一种形式，通过数字、字母和其他符号来控制加工设备。数字、字母和符号用适当的格式编码为一个特定工件定义指令程序。当工件改变时，指令程序就改变。这种改变程序的能力使数控适合于中、小批量生产，写一段新程序远比对加工设备做大的改动容易得多。
数控车床主要用来对旋转体零件进行车削、镗削、钻削、铰削、攻丝等工序的加工。一般能自动完成内外圆柱面、圆锥面、球面、圆柱螺纹、槽及端面等工序的切削加工。
主机是数控车床的主题，包括机床身、立柱、主轴、进给机构等机械部件。数控装置，是数控机床的核心，包括硬件以及相应的软件，用于输入数字化的零件程序，