High-bearing-capacity universal joint of wing-shaped cold extrusion self-lubricating bearing and machining method of high-bearing-capacity universal joint

The invention relates to a high-bearing-capacity universal joint of a wing-shaped cold extrusion self-lubricating bearing and a machining method of the high-bearing-capacity universal joint, and belongs to the technical field of universal joints. The high-bearing-capacity universal joint comprises a cross shaft; four wing-shaped bearing pedestals connected with the cross shaft in a nested manner are arranged on the cross shaft; heat dissipation gaskets are arranged between the front end of the cross shaft and the bottoms of the wing-shaped bearing pedestals; lubricating shaft sleeves connected with the cross shaft in a sleeving manner are arranged between the wing-shaped bearing pedestals and the cross shaft; an oil nozzle is arranged on the cross shaft; an oil way communicating with the oil nozzle and the lubricating shaft sleeves is arranged in the cross shaft; and each lubricating shaft sleeve comprises a shaft sleeve body, wherein a plurality of shaft sleeve heat dissipation oil passing holes annularly di