With the continuous emergence of advanced manufacturing technology in the world, the application of ultra-high speed cutting and ultra-precision machining technology, the rapid development of flexible manufacturing system, and the continuous maturity of computer integrated system, the demand for CNC machining technology is more and more large. At present, numerical control machine tools are developing in the following direction.

High speed, high precision speed and precision are two important indicators of CNC machine tools, which have a direct impact on processing efficiency and product quality. In order to improve the basic operation speed of numerical control system, digital processor and high frequency processor are widely used in numerical control system at present. At the same time, in order to improve the data processing ability of the system, the development trend of numerical control machine tool super large integrated circuit and multi-microprocessor structure is adopted, that is, to improve the speed and precision of interpolation operation. The linear servo feeding method, which is directly driven by linear motor, has higher speed and dynamic response performance. Using feedforward control technology, the tracking hysteresis error can be greatly reduced and the machining accuracy of corner cutting can be improved.

In order to meet the needs of ultra-high speed machining, the CNC machine tool adopts the structure of the motor spindle and the machine tool spindle, and realizes the integration of the frequency conversion motor and the machine tool spindle. The motor bearing adopts the form of magnetic levitation bearing, liquid hydrostatic bearing and ceramic rolling bearing. Ceramic tools and diamond-coated tools have been used for CNC machine control panels.

With automatic tool change device (dao database is up to 100 or above) of the various types of processing center, can be done at the same time on the same machine milling, boring, drilling, cars, reaming, reaming, tapping screw, etc all kinds of working procedure, modern CNC machine also USES the spindle, cutting, numerical control machine tool system design is a part of machining of the different parts of the at the same time in different ways. Because the numerical control system adopts multi-CPU structure and hierarchical interrupt control mode, parts can be processed and programmed at the same time on a machine tool, so as to realize the so-called "pre-processing and post-editing".