Numerical Control Machining

　Numerical Control Machining

   Numerical Control Machining refers to the processing of technical requirements, such as the shape and size of workpiece in the form of Numbers and letters, by the control system to issue instructions to make the cutter conform to requirements.[1] it generally refers to the process of machining parts on CNC machine tools. 　　

   Numerical Control Machine tool is a kind of machine tool which is controlled by computer.The movement and auxiliary movement of the CNC machine are controlled by the instruction given by the CNC system.The instructions of the numerical control 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 (numerical control language or symbol) specified by the system.Numerical control system according to the program instruction to the servo and other functional parts of the operation or terminal information to control the various movements of the machine.The machine will stop automatically at the end of the part processing.Any type of numerical control machine, in its numerical control system if not input program instruction, the numerical control machine can not work.The controlled action of the machine includes the start and stop of the machine.Start and stop of the spindle, change of rotation direction and rotation speed;Direction, speed and mode of feed motion;Tool selection, length and radius compensation;Tool replacement, coolant opening and closing, etc