Nc machining means, issue instructions by the control system have made cutting tools meet the requirements of various kinds of sports, in the form of Numbers and letters that shape and size of workpiece processing technical requirements and processing requirements.  it refers to the process of processing parts on a CNC machine tool.
A CNC machine tool is a machine tool controlled by a computer. The computer used to control the machine tool, whether it is a special computer or a general computer, is generally called a CNC system. The movement and auxiliary actions of nc machine tools are controlled by the instructions of nc system. The instructions of the nc system are compiled by the programmer according to the material of the workpiece, the processing requirements, the characteristics of the machine tool and the instruction format (nc language or symbol) specified by the system. The CNC system controls the movement of the machine tool by sending running or terminal messages to the servo device and other functional parts according to the program instructions. The machine stops automatically when the parts are finished. Any nc machine tool cannot operate without input of program instruction in its nc system. The controlled action of machine tool generally includes starting and stopping of machine tool. The change of starting and stopping, rotating direction and rotating speed of the spindle; The direction, speed and manner of feeding motion; Tool selection, length and radius compensation; Tool replacement, starting and closing of coolant, etc.
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