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The five-axis linkage CNC machine tool is a machine tool with high technology content and high precision for processing complex curved surfaces. This machine tool system is used in a country's aviation, aerospace, military, scientific research, precision instruments, high-precision medical equipment and other industries. Has a significant influence. It is generally believed that the five-axis linkage CNC machine tool system is the only means to solve the processing of impellers, blades, marine propellers, heavy-duty generator rotors, turbine rotors, large diesel engine crankshafts, etc. The use of a five-axis linkage machine makes it easy to clamp the workpiece. No special fixture is needed during processing, which reduces the cost of the fixture, avoids multiple clamping and improves the precision of the mold processing. Machining molds with five-axis technology can reduce the number of fixtures used. In addition, because the five-axis linkage machine saves many special tools during machining, the tool cost is reduced. The five-axis linkage machine tool can increase the effective cutting edge length of the tool during machining, reduce the cutting force, improve the tool life and reduce the cost. Using a five-axis linkage machine tool to process the mold can quickly complete the mold processing, fast delivery, better guarantee the processing quality of the mold, make mold processing easier, and make mold modification easier. In the traditional mold processing, the vertical machining center is generally used to complete the milling of the workpiece. With the continuous development of mold manufacturing technology, some weaknesses of the vertical machining center itself are becoming more and more obvious. Modern mold processing is generally processed by ball-end milling cutters. The benefits of ball-end milling cutters in mold processing are very obvious, but if a vertical machining center is used, the bottom line has zero line speed, so the bottom surface has a poor finish. If the four or five-axis linkage machining technology is used to process the mold, the above shortcomings can be overcome.