數(shù)控機(jī)床中英文翻譯資料-數(shù)控設(shè)計(jì)-在線瀏覽
2024-07-24 01:25本頁面
【正文】 uce a program that the machine tool could understand. Remember, a machine needs the geometry of the part and machining instructions such as speeds, feeds, and coolant to operate. APT made it easier for people to write these programs, which were then translated 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。代表性的 NCs每次讀取一步程序（塊）并執(zhí)行它；然而， CNC機(jī)床能夠存儲(chǔ)整個(gè)程序。這些控制機(jī)器 使用微處理器給了他們額外的功能。 直到大約 1976年這些機(jī)器被稱作 NC（數(shù)字控制）機(jī)器。隨著繼續(xù)的發(fā)展和提煉， 60年代初期數(shù)字控制機(jī)器在工業(yè)中變得更加普通。（二進(jìn)制代碼系統(tǒng)使用 0 和 1）。第一臺(tái)數(shù)控機(jī)床非常龐大。 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。 APT，發(fā)明于 1954年，使用機(jī)床能讀懂的和英文相似的符號(hào)語言來編制程序。這個(gè)控制機(jī)器使用真空管。第一臺(tái)由 Parsons和 MIT生產(chǎn)的機(jī)器在1952年展出。控制機(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)。計(jì)算機(jī)能計(jì)算刀具應(yīng)該遵循的軌跡并在穿孔卡上儲(chǔ)存信息。伺服電動(dòng)機(jī)誕生了。 1949 年，空軍要求 Parsons 生產(chǎn)能移動(dòng)機(jī)器的軸來自動(dòng)計(jì)算點(diǎn)位置的一種控制系統(tǒng)。他有二名操作員，一個(gè)移動(dòng)機(jī)器的每根軸。 1948 年 Parsons 向空軍遞交發(fā)展 生產(chǎn)這些模板的機(jī)器的提案并得到認(rèn)同。 Parsons提出用 穿孔的卡片來進(jìn)行大量計(jì)算的主意。 Parson的方法是計(jì)算沿 副翼表面的坐標(biāo)點(diǎn)。 然而，在 Michigan 一個(gè)商店，一個(gè)叫做 J
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