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(jī)床能對(duì)旋轉(zhuǎn)的工件同時(shí)進(jìn)行多種車削加工。切割絲水平移動(dòng)所產(chǎn)生的電火花會(huì)將材料腐蝕掉，而CNC就是用來控制水平工作臺(tái)的移動(dòng)。由于沒有機(jī)械切削力，所以激光加工的工件變形非常小，激光切割機(jī)對(duì)加工窄槽和鉆孔非常有效 。材料在光線的照射下溫度會(huì)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(jī)是用一根很細(xì)的切割絲做電極。通過減少零件在機(jī)床間轉(zhuǎn)移，加工中心能夠節(jié)省生產(chǎn)時(shí)間與成本。許多加工中心還裝有可移動(dòng)的長(zhǎng)方形工作臺(tái)，即托盤系統(tǒng)。機(jī)床控制單元還包括機(jī)床運(yùn)動(dòng)控制器，該控制器是一個(gè)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(jì)算機(jī)的隨機(jī)存儲(chǔ)器中的，控制器可以對(duì)它們進(jìn)行重新調(diào)用，編寫以及處理等操作。Unit 1 Introduction to
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