METHOD FOR MACHINING CRANKPINS OF A CRANKSHAFT

摘要

The invention relates to a method for machining crankpins (3) of a crankshaft (1) by pre-machining and finishing the bearing surface (8) for the connecting rod bearing of the crankpin (3). In the event of an extended course (hv) of the crankpin (3), grooves (6, 7) are concentrically incorporated into both sides of the pre-machined bearing surface, and rigidified. During the finishing process, a section (14) of the circumference of the bearing surface (8) is cut down to approximately the same level as the depth of the grooves (6, 7).