Stamping die for high-efficiency mechanical workpiece machining

The high-efficiency stamping die for mechanical workpiece machining comprises a machining table, a containing groove is formed in the upper surface of the machining table, two supporting blocks are fixedly connected to the inner side wall of the containing groove, a lower die base is jointly installed above the two supporting blocks, and two sets of installing holes are formed in the upper surface of the lower die base; two stamping holes are formed in the upper surface of the lower die base. According to the punching device, a liquid pump works to extract cooling liquid in the cooling box, the cooling liquid is evenly sprayed into a punching hole through cooperation of a cooling spray head and a liquid injection opening, spraying cooling of a punching head entering the punching hole is achieved, the situation that the punching head is damaged due to the fact that the temperature of the punching head is too high is avoided, and the service life of the punching head is prolonged; by means of the arranged movin