With consumer products, the acceleration of replacement, mould technology has been the development of mould and manufacture of quality production efficiency increasing demands put forward, so the mould EDM machining efficiency and quality of low production instability shortcomings gradually exposed.
   For the realization of the mould cavity and related high-speed machining parts, machine tools need to have the following characteristics:

Now, a few tons to hundreds of tons of mould is very common, thus requiring a large machine can bear the weight of the work surface, which requires equipment must have a large load-bearing characteristics and high rigidity, there must be large enough to travel with them and work table size adapt. In addition, the mould material is high strength and hardness, elongation is often used with larger diameter end milling small mould cavity, the process prone to flutter. To ensure the machining accuracy and surface quality, high-speed machine tools for mould must have a high dynamic and static stiffness, in order to improve the positioning accuracy of machine tools, tracking precision and anti-vibration capability.

High-speed milling in the mould processing has shown significantly superior. In order to adapt the processing of the mould cavity surface, the radius of the tool should be less than the minimum circle radius of the cavity surface, so the tool and the workpiece during processing occurred "interference." As the tool diameter is small, thus requiring very high spindle speed, high-speed machine tool spindle speed abroad has reached 4 million to 10 million r / min, rapid traverse speeds of up to 30,000 ~ 60,000 min. Cavity and other parts of the mould parts thick, often finishing a fixture in the workpiece and, therefore, spindle power to large, medium-size moulds milling and machining center spindle power often 10 ~ 40kw, some even higher.

More complex mould cavity surface and groove space posed by six, and many have a deep cavity moulds. 3d surface to achieve high accuracy, high speed and high stability of the processing needs of multi-axis machine, and deep cavity has a good comprehensive cutting capacity. Five-axis machining center can be used, in addition to the three coordinates of linear motion, there are two rotating coordinate the feed movement. Multi-axis milling head or the table can feed a continuous rotation, which applies to processing of the cavity surface of the mould with complex parts.
It can be said mould compound processing is one of the development. Although the processing center has been able to many complex machining processes on a single machine to achieve, but it still can not fully meet the mould, the mechanical processing and electrical, chemical, ultrasonic processing method of compound different principles, both the technological characteristics of two or more combined machining mould in the future will have broad prospects.