大連數(shù)控加工是指，由控制系統(tǒng)發(fā)出指令使刀具作符合要求的各種運動，以數(shù)字和字母形式表示工件的形狀和尺寸等技術(shù)要求和加工工藝要求進行的加工。它泛指在數(shù)控機床上進行零件加工的工藝過程。
數(shù)控機床是一種用計算機來控制的機床，用來控制機床的計算機，不管是專用計算機、還是通用計算機都統(tǒng)稱為數(shù)控系統(tǒng)。數(shù)控機床的運動和輔助動作均受控于數(shù)控系統(tǒng)發(fā)出的指令。而數(shù)控系統(tǒng)的指令是由程序員根據(jù)工件的材質(zhì)、加工要求、機床的特性和系統(tǒng)所規(guī)定的指令格式（數(shù)控語言或符號）編制的。數(shù)控系統(tǒng)根據(jù)程序指令向伺服裝置和其它功能部件發(fā)出運行或終斷信息來控制機床的各種運動。當零件的加工程序結(jié)束時，機床便會自動停止。任何一種數(shù)控機床，在其數(shù)控系統(tǒng)中若沒有輸入程序指令，數(shù)控機床就不能工作。機床的受控動作大致包括機床的起動、停止；主軸的啟停、旋轉(zhuǎn)方向和轉(zhuǎn)速的變換；進給運動的方向、速度、方式；刀具的選擇、長度和半徑的補償；刀具的更換，冷卻液的開起、關(guān)閉等。
Dalian CNC machining refers to the machining process in which the control system issues instructions to make the cutting tool perform various movements that meet the requirements, and represents the technical and processing requirements such as the shape and size of the workpiece in the form of numbers and letters. It generally refers to the process of machining parts on CNC machine tools.
Numerical control machine tool is a type of machine tool controlled by a computer. The computer used to control the machine tool, whether it is a dedicated computer or a general-purpose computer, is collectively referred to as a numerical control system. The motion and auxiliary actions of CNC machine tools are controlled by instructions issued by the CNC system. The instructions of the numerical control system are compiled by programmers based on the material of the workpiece, processing requirements, characteristics of the machine tool, and the instruction format (numerical control language or symbols) specified by the system. The numerical control system sends operation or termination information to the servo device and other functional components based on program instructions to control various movements of the machine tool. When the machining program of the part is completed, the machine tool will automatically stop. Any CNC machine tool cannot operate without inputting program instructions into its CNC system. The controlled actions of a machine tool generally include the starting and stopping of the machine tool; The start stop, rotation direction, and speed change of the spindle; The direction, speed, and method of feed motion; Selection of cutting tools, compensation for length and radius; Tool replacement, opening and closing of coolant, etc.
