Due to the development of molds, molds of several tons to tens of tons are very common. Therefore, it is required that the machine tool table can bear a large weight. This requires that the equipment must have the characteristics of large load-bearing and high rigidity. It must also be large enough. The table size and working stroke are compatible with it. The strength and hardness of the mold material are very high. In addition, small diameter end mills with large elongations are often used to process the mold cavity, so the process is prone to chatter. In order to ensure the machining accuracy and surface quality of the parts, the high-speed universal milling machine manufactured by the mold must have high dynamic and static stiffness to improve the positioning accuracy, tracking accuracy and vibration resistance of the machine tool.
High speed and high-power high-speed processing is the development direction, high-speed milling has shown significantly superior in mold processing. In order to adapt to the processing of the mold cavity surface, the radius of the tool should be smaller than the minimum circumferential radius of the cavity surface to avoid "interference" between the tool and the workpiece during processing. Due to the small diameter of the tool, the spindle speed is very high.
Multi-axis can be integrated deep cavity and a good cutting ability for complex multiple mold cavity space constituting six surface and grooves, and many die having a deep cavity. In order to achieve high-precision, high-speed and high-stability processing of 3d curved surfaces, the machine tool needs multi-axis linkage and has good comprehensive cutting capabilities for deep holes. A five-axis linkage machining center can be used. In addition to the linear movement of three coordinates, there are two feed movements of rotary coordinates. The milling head or table can be continuously fed with multiple axes, which is suitable for machining mold parts with complex cavity surfaces. It can be said that composite processing is one of the development directions of mold processing.
