This crankshaft connecting rod lathe machine tool is a special equipment for machining various large eccentric shafts and crankshaft connecting rod journals. It can complete the outer circle, root, outer circle of crank arm, inner surface of crank arm, and connecting rod journal of crankshaft main journal and connecting rod journal. Semi-finishing and finishing of the internal fillet and the external round chamfer of the crank. It also has the function of machining the crankshaft main journal. Suitable for carbon steel, alloy steel, cast steel, cast iron processing.