Method for manufacturing workpiece i.e. crankshaft of internal combustion engine in passenger car from casted or forged workpiece to final contour, involves machining workpiece with predetermined offset and polishing workpiece up to contour

摘要

The method involves machining of an original mold with a predetermined offset, and radius-hardening a part of a workpiece i.e. crankshaft (10). The workpiece with another predetermined offset is machined by hard turning, hard milling and/or grinding with galvanic or ceramic bonded cubic boron nitride. The workpiece or a section of the workpiece is polished up to a final contour, where the section of the workpiece includes a stop collar of a bearing that is designed as a pin bearing and/or a center bearing of a crankshaft.