Machining CNC lathe processing, is generally refers to the CNC machine tools for parts processing process. CNC machine tools is a computer to control the machine, used to control the computer computer, whether it is a dedicated computer, or general-purpose computers are collectively referred to as CNC system. CNC machine tools and auxiliary movements are controlled by the NC system issued by the instructions.

The NC system instructions are programmed by the programmer according to the material of the workpiece, the machining requirements, the characteristics of the machine and the instruction format (numerical control language or symbol) specified by the system. CNC system according to the program instructions to the servo device and other functional parts issued by the operation or termination information to control the various movements of the machine. When the machining process of the part is finished, the machine will automatically stop. Any kind of CNC machine tools, in its numerical control system if there is no input program instructions, CNC machine tools can not work.

The controlled movement of the machine tool generally includes the start and stop of the machine; the start and stop of the spindle, the direction of rotation and the speed change; the direction, speed, mode of the feed movement; the selection of the tool, the compensation of the length and the radius; Replacement, opening of coolant, closing, etc.

CNC machine tools from the beginning to select a complex surface with the aircraft parts as a processing object, to solve the common processing methods difficult to solve the key. The biggest feature of CNC machining is the use of perforated tape (or tape) to control the machine for automatic processing.

As the aircraft, rockets and engine parts have different characteristics: aircraft and rocket zero, component size, complex surface; engine zero, small size, high precision.

So the mechanical processing of aircraft, rocket manufacturing sector and the engine manufacturing sector selected CNC machine tools are different. In the manufacture of aircraft and rocket manufacturing to the use of continuous control of large CNC milling machine, and in the engine manufacturing both the use of continuous control of CNC machine tools, but also the use of point control CNC machine tools (such as CNC drilling machine, CNC boring machine, machining center, etc.)