Oil press for circular blade and using method of oil press

The invention relates to machining equipment for a circular blade. The problem of large machining errors is solved, and the effect of small machining errors is achieved. According to the following scheme, an oil press for the circular blade comprises a rack, the rack is fixedly provided with an upper press die and a lower press die which are used for pressing the circular blade to be bent, and oneside of the rack is provided with an oil pump for driving the upper press die to rise and fall in the vertical direction; and the rack is provided with a liquid storage frame for storing cooling liquid and a water pump for pumping the cooling liquid out, the upper press die is internally provided with a liquid outlet hole communicating with the lower surface of the upper press die, and the outputend of the water pump communicates with the liquid outlet hole through a water pipe. By means of matching of the liquid storage frame, the water pump and the liquid outlet hole, quick cooling of thecircular blade is achieved.