V-pulley manufacturing process

A V-pulley manufacturing process, comprising the following steps:

• forming integrally a metallic cylindrical pulley blank;
• creating a plurality of circumferential V-belt grooves matching a V belt on the pulley blank along a longitudinal central axis by cutting and removing certain portions of a circumferential outer surface of the pulley blank;
• precise machining of the pulley blank by further cutting side surfaces of the plurality of circumferential V-belt grooves, removing machining allowance, and forming bright smooth surfaces on all exposed outer surfaces of the pulley blank and the side surfaces of the plurality of circumferential V-belt grooves;
• shot blasting the precise machined pulley blank in a shot blasting machine on the side surfaces of the plurality of circumferential V-belt grooves, and forming a rough shot blasting layer on the side surfaces of the plurality of circumferential V-belt grooves,
• drilling at least one through hole axially on the shot blasted pulley blank along the longitudinal central axis, wherein the at least one through hole penetrates two opposite axial ends of the pulley blank and the at least one through hole fluidly connects all the plurality of circumferential V-belt grooves;
• mounting a mold for casting a plurality of tooth rings at groove bottoms of the plurality of circumferential V-belt grooves on an outer side of the pulley blank, wherein meshing teeth on the plurality of tooth rings are designed according to a principle of mesh transmission;
• fastening the mold for casting the plurality of tooth rings;
• and
• pouring metal casting fluid into the plurality of circumferential V-belt grooves from an opening position at an end portion of the at least one through hole to form the plurality of tooth rings through casting.