MANUFACTURING METHOD OF CRANKSHAFT WHICH IS CASTED IN A MOLD TO FORM A PLURALITY OF MAIN BEARING JOURNALS AND A PLURALITY OF PIN BEARING JOURNALS

摘要

PURPOSE: A manufacturing method of crankshaft is provided to reduce weight of the crankshaft and to maximize weight loss.;CONSTITUTION: A manufacturing method of crankshaft comprises the following steps: location setting a single core inside a cavity of a mold having first and second half units which forms exterior shape of a crankshaft (20); and introducing molten metal inside the cavity in order to form the crankshaft. The exterior shape of the crankshaft comprises a plurality of pin bearing journals (28) and a plurality of main bearing journals (26). The molten metal concurrently forms hollow form section through one or more of the plurality of pin bearing journals and the plurality of main bearing journals.;COPYRIGHT KIPO 2013