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


數(shù)控是可編程自動化技術(shù)的一種形式，通過數(shù)字、字母和其他符號來控制加工設(shè)備。數(shù)字、字母和符號用適當(dāng)?shù)母袷骄幋a為一個特定工件定義指令程序。當(dāng)工件改變時，指令程序就改變。這種改變程序的能力使數(shù)控適合于中、小批量生產(chǎn)，寫一段新程序遠(yuǎn)比對加工設(shè)備做大的改動容易得多。
數(shù)控車床主要用來對旋轉(zhuǎn)體零件進(jìn)行車削、鏜削、鉆削、鉸削、攻絲等工序的加工。一般能自動完成內(nèi)外圓柱面、圓錐面、球面、圓柱螺紋、槽及端面等工序的切削加工。
主機(jī)是數(shù)控車床的主題，包括機(jī)床身、立柱、主軸、進(jìn)給機(jī)構(gòu)等機(jī)械部件。數(shù)控裝置，是數(shù)控機(jī)床的核心，包括硬件以及相應(yīng)的軟件，用于輸入數(shù)字化的零件程序，