The project adopts imported equipment with high flexibility and can be compatible with the processing of four kinds of truck connecting rods. Equipped with automatic conveying chute and robot system, the degree of automation is high. The whole line processes include: automatic blank feeding, rough grinding, rough machining, large head hole opening and breaking assembly, press fitting bushing (hot or cold pressing), fine grinding, finish machining, deburring, measurement grouping and coding, and automatic blanking and stacking of finished products.