數(shù)控機(jī)床中英文翻譯資料-數(shù)控設(shè)計(jì)(更新版)
【正文】 d to a program that the machine could understand. In 1955 the Air Force awarded $35million in contracts to manufacture numerical control machines. The first numerically controlled machine tools were very bulky. The machine control was vacuumtube operated and needed a separate puter to generate its binary tape codes. (Binary coding systems use 1s and 0s). Programming plex parts took highly specialized people. Developments and refinements continued, and by the early 1960snumerical control machines became much more mon in industry. As the acceptance of numerical control machines grew, they became easier to use and more powerful. Up until about 1976 these machines were called NC (numerical control) machines. In 1976 CNC (puter numerical control) machines were produced. These machine controls used microprocessors to give them additional capability. They also featured additional memory. The NCs typically read one short program step (block) at a time and executed it。 直到大約 1976年這些機(jī)器被稱作 NC（數(shù)字控制）機(jī)器。 APT使人們寫這些程序變得更容易 ，這些程序隨后又被翻譯成機(jī)器能讀懂的另一種程序?？刂茩C(jī)器從操作者得到數(shù)據(jù)并控制附著在每根軸上的馬達(dá)。他有二名操作員，一個移動機(jī)器的每根軸。 然而，在 Michigan 一個商店，一個叫做 John Parsons 的人正在研究一種新方法來改進(jìn) 直升機(jī)動葉片模板的制造方法。當(dāng)制造商發(fā)現(xiàn)了如何小型化電路，它比晶體管更有助于減小尺寸和改進(jìn)電子控制的可靠性。今天價(jià)值 15 美圓的計(jì)算器也遠(yuǎn)比這個早期的嘗試更功能強(qiáng)大。 計(jì)算機(jī)的發(fā)明是數(shù)字控制的一個轉(zhuǎn)折點(diǎn)。早在 1808年織機(jī)裝入帶孔的金屬卡片控制所生產(chǎn)布料的樣式。 NC/CNC機(jī)床的演變 數(shù)字控制其實(shí)不是什么新東西。空氣被用于感應(yīng)孔是否存在。 ENIAC 通過使用數(shù)以萬計(jì)的開關(guān)來編程。集成電路實(shí)際是芯片上的控制電路。模板也必須用傳統(tǒng)方法制造，是非常費(fèi)時和不精確的。他第一次試圖在自動控制中使用 穿孔卡制表機(jī)計(jì)算沿副翼曲線的方位并用普通銑床定位刀具到制表機(jī)位置。機(jī)器的操作者能讀 出卡片。記住，機(jī)器需要零件的幾何外型和例如速度、飼料和冷卻液的機(jī)器指令來運(yùn)行。數(shù)字控制機(jī)器廣泛接受，它們變得更加功能強(qiáng)大和容易使用。 however, CNC machines could store whole programs. Improvements in puter technology in the late 1970s and 1980s brought the cost of numerical control machines down to a level where most manufacturing panies cannot afford to be without them.
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