數(shù)控專業(yè)英語(文件)
【正文】 ine to another. 加工中心只需一次裝卡就可以完成銑、鉆、攻絲、鏜等多種加工操作。這些 CNC機床能對旋轉(zhuǎn)的工件同時進行多種車削加工。切割絲水平移動所產(chǎn)生的電火花會將材料腐蝕掉，而CNC就是用來控制水平工作臺的移動。由于沒有機械切削力，所以激光加工的工件變形非常小，激光切割機對加工窄槽和鉆孔非常有效 。材料在光線的照射下溫度會驟然上升并汽化。Text Wire EDM machines utilize a very thin wire as an electrode. The wire is stretched between two rollers and cuts the part like a bandsaw. Material is removed by the erosion caused by a spark that moves horizontally with the wire. CNC is used to control horizontal table movements. 線切割機是用一根很細的切割絲做電極。通過減少零件在機床間轉(zhuǎn)移，加工中心能夠節(jié)省生產(chǎn)時間與成本。許多加工中心還裝有可移動的長方形工作臺，即托盤系統(tǒng)。機床控制單元還包括機床運動控制器，該控制器是一個可執(zhí)行的軟件程序。 A plete set of coded instructions for executing an operation is called a program. Such programs are stored in RAM or the randomaccess memory portion of the puter. They can be played back, edited, and processed by the control. Thus, the machine functions are encoded into the puter at the time of manufacture. 所謂的程序就是用于執(zhí)行某一操作的一整套代碼表示的指令，而這些程序是存放在計算機的隨機存儲器中的，控制器可以對它們進行重新調(diào)用，編寫以及處理等操作。Unit 1 Introduction to
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