In addition to the round tube polishing machine , the mold polishing machine accurately generates five-segment spark pulses and ninety-nine-segment patterns and enhancement pulses from the microcomputer, which can realistically simulate the electric spark pattern from matt to very thick in the pattern state; The material with high wear resistance such as tungsten carbide is transferred to the working surface of the workpiece, which greatly prolongs the service life of the workpiece. The improved sound wave output circuit makes the machine very suitable for rough surface with fiber whetstone and diamond trowel. Vibration grinding; the addition of a voice prompt function with artificial intelligence, which provides a powerful guarantee for the correct and safe use of the machine.