From the very beginning, the CNC machine tool selects the aircraft parts with complex surfaces as the processing object, and solves the key problem that is difficult to solve by ordinary processing methods. The biggest feature of CNC machining is the use of perforated belts (or magnetic tapes) to control machine tools for automatic processing.

1. Process concentration

CNC machine tools generally have tool holders and tool magazines that can automatically change tools. The tool change process is automatically controlled by the program, so the process is relatively concentrated. Process concentration brings huge economic benefits:

(1) Reduce the floor area of the machine tool and save the workshop.

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

2. Automation

When CNC machine tools are processed, there is no need to manually control the tool, and the degree of automation is high. The benefits are obvious.

(1) Lower requirements for operators:

A senior engineer of an ordinary machine tool cannot be trained in a short period of time, but the training time of a CNC worker who does not need programming is extremely short (for example, a CNC lathe worker only needs one week, and can also write simple machining programs). Moreover, the parts processed by CNC workers on CNC machine tools have higher precision and save time than the parts processed by ordinary workers on traditional machine tools.

(2) Reduce the labor intensity of workers: During the machining process, CNC workers are excluded from the machining process most of the time, which is very labor-saving.

(3) Stable product quality: The processing automation of CNC machine tools eliminates human errors such as fatigue, carelessness, and estimation of workers on ordinary machine tools, and improves product consistency.

(4) High processing efficiency: The automatic tool change of CNC machine tools makes the processing process compact and improves labor productivity.

3. High flexibility

Although the traditional general-purpose machine tool has good flexibility, it is inefficient; while the traditional special-purpose machine tool has high efficiency, but it has poor adaptability to parts, high rigidity, and poor flexibility. It is difficult to adapt to the fierce competition brought about by the market economy. Products are frequently modified. As long as the program is changed, new parts can be processed on the CNC machine tool, and it can be operated automatically, with good flexibility and high efficiency, so the CNC machine tool can well adapt to market competition.

4. Strong ability

The machine tool can accurately process various contours, and some contours cannot be processed on ordinary machine tools. CNC machine tools are especially suitable for the following occasions:

(1) Parts that are not allowed to be scrapped.

(2) Development of new products.

(3) Processing of urgently needed parts.