A certain company in Neijiang provides crankshaft processing services to multiple domestic automobile manufacturers, resulting in a wide variety of crankshafts on the production line. To solve this problem, our company has equipped customers with a line edge stacker crane warehouse, and each truss line is equipped with a line edge stacker crane warehouse. This allows for quick switching of crankshaft types and offline or plug-in operations, increasing flexibility and better meeting the actual production needs of customers. The entire line is equipped with an information system, connected to the factory MES, accepts factory order allocation, and makes production adjustments, achieving digital flexible production of multiple varieties of crankshafts.