Method for machining crankshaft, apparatus for machining crankshaft, control apparatus and program

A method for machining a crankshaft wherein a first cutting process is carried out on a first crankshaft using a rotary cutter based on preset machining data, thereby forming a thrust surface of a journal of the first crankshaft which makes a right angle with an outer peripheral surface of the journal of the first crankshaft, the method comprising

• preparing data for correcting a straightness of the thrust surface of the journal by comparing (i) results of a measurement of dimensions of the thrust surface of the journal having been machined in the first crankshaft on which said first cutting process has been carried out, and (ii) target dimensions for the thrust surface of the journal;
• and
• correcting said preset machining data based on said data for correcting the straightness of the thrust surface of the journal, thereby obtaining corrected machining data,
• wherein an amount of feed of said rotary cutter is controlled in a direction along a longitudinal axis of the crankshaft based on the corrected machining data when performing a second cutting process on a second crankshaft subsequent to the machining of the first crankshaft.