Forging press circulation oil structure and method

The invention provides a forging press circulation oil structure and method and belongs to the field of forging presses. The forging press circulation oil structure comprises a machine body, the machine body is provided with a transmission installing cavity, and the transmission installing cavity is divided into a crankshaft installing cavity and a gear box through a partition plate. A crankshaft is arranged in the crankshaft installing cavity, a crankshaft supporting seat is provided with a crankshaft bearing bush matched with the crankshaft, the surface of the crankshaft bearing bush matched with the crankshaft is provided with a first oil groove, and the first oil groove is communicated with the gear box. A gear shaft is arranged in the gear box, the crankshaft supporting seat is provided with a gear shaft bearing bush matched with the gear shaft, the surface of the gear shaft bearing bush matched with the gear shaft is provided with a second oil groove, and the second oil groove is communicated with the gear box. A pressure cavity is communicated with the second oil groove and communicated with the first oil groove through an oil pipe. According to the forging press circulation oil structure and method, the gear oil lubrication is adopted directly, gear oil is not polluted, the lubricating effect is improved, and the service life is prolonged.