Novel lightweight structure of transmission shaft universal joint fork forge piece

A novel lightweight structure of a transmission shaft universal joint fork forge piece comprises a connecting hub and two fork lugs arranged in a bilateral symmetry mode, a connecting rib located above the connecting hub is arranged between the two fork lugs, an inner nest with an opening in the bottom is formed between the lower end of the connecting hub and the connecting rib, and a deep long groove is formed in the top of the inner nest in the left-right direction. The outlines of the vertical faces of the deep long groove and the inner nest in the left-right direction are isosceles trapezoids with the narrow upper portions and the wide lower portions, and the two ends of the upper bottom and the two waists of each isosceles trapezoid are in arc transition. The universal joint fork forge piece has the advantages that the inner nest structure of the universal joint fork forge piece is optimized, a connecting hub at the bottom of the universal joint fork forge piece is easier to form, black skin is avoided,