CRANKSHAFT MACHINING SYSTEM AND CRANKSHAFT MACHINING METHOD

摘要

A crankshaft machining system (100) is provided with a center hole machining device (10), a post-centering balance measuring instrument (20), and a cutting device (30). The post-centering balance measuring instrument (20) measures the shape of a post-centering material crankshaft (1a) with reference to a pair of center holes (CH). Further, the post-centering balance measuring instrument (20) determines a principal axis of inertia on the basis of the shape of the post-centering material crankshaft (1a), and generates center hole position information for correction that indicates points of intersection of the principal axis of inertia and both end surfaces of the post-centering material crankshaft (1a). The center hole machining device (10) machines a pair of center holes (CH) in both end surfaces of a next inserted material crankshaft (1) on the basis of the center hole position information for correction.