Machining method for precision forging assembly line of forward and reverse groove star-shaped sleeve

The invention relates to a machining method of a forward and reverse groove starlike sleeve precision forging assembly line. The forward and reverse groove starlike sleeve precision forging assembly line comprises heating equipment, rough forging equipment, precision forging equipment, a rough forging feeding device and a precision forging feeding device. The rough forging die carries out hot forging processing on the raw materials to form the rough blank, the rough blank forms the basic shape, then shaping and size trimming are carried out through the precision forging equipment, so that the starlike sleeve which is subjected to fine trimming and shaping and is provided with roller ways with different radian angles is obtained, the processing efficiency is high, and the whole material waste is less. The upper pressing column axially extrudes raw materials, and the bottom ejector pin centrally extrudes the raw materials, so that groove spaces of the forward convex ribs and the reverse convex ribs are filled w