Procedure for machining connecting rod and main journals of crankshafts

摘要

Procedure for machining the bearing seats of the main journals and crank crankshafts (1) and the side surfaces (8) adjacent each time to the bearing seats (7) after the grinding of a crankshaft (1 ), wherein in crankshafts direct transition from the bearing seats (7) to the side surfaces (8), ie without recesses, - the bearing seats (7) and adjacent partial sections of the lateral surfaces (8 ) are annealed, then - the bearing seats (7) temperate are machined millturn, - adjacent temperate partial sections of the lateral surfaces (8) millturn hard precision, characterized machined because the bearing seats (7) machined millturn lathe-machined precision broaching hard to final dimension.