CNC machine tools initially selected aircraft parts with complex surfaces as processing objects, solving the key problem that ordinary machining methods are difficult to solve. The greater feature of CNC machining is the use of perforated tape (or magnetic tape) to control the machine tool for automatic machining. Due to the different characteristics of aircraft, rockets, and engine parts, the components and dimensions of aircraft and rockets are large and the surface is complex; Engine components have small dimensions and high accuracy. Therefore, the CNC machine tools used by aircraft, rocket manufacturing departments, and engine manufacturing departments are different. In aircraft and rocket manufacturing, large-scale CNC milling machines with continuous control are mainly used, while in engine manufacturing, both continuous control CNC machines and point control CNC machines (such as CNC drilling machines, CNC boring machines, machining centers, etc.) are used.

Process concentration

CNC machine tools generally have tool holders and tool libraries that can automatically change tools. The tool change process is automatically controlled by a program, so the processes are relatively centralized. Concentration of processes brings huge economic benefits:

(1) Reduce the area occupied by machine tools and save factory buildings.

⑵ Reduce or eliminate intermediate links (such as intermediate testing of semi-finished products, temporary storage and transportation, etc.), which saves both time and manpower.

automation

During CNC machining, there is no need to manually control the cutting tools, resulting in a high degree of automation. The benefits are obvious.