曲轴是柴油机的一个重要零件,目前国内多数曲轴用合金钢锻造而成,材质较硬余量较大,使加工比较困难。以往对中型曲轴加工多采用车削工艺。在车削过程中,尽管采用较低的切削速度和深度,但仍经常发生崩刃,生产效率很低。而且车削工时约占加工总工时的一半,例如16V240柴油机曲轴,机加工工时为148小时,其中车削工时为84.5小时,约占57%。因 Crankshaft is an important part of diesel engine. At present, most crankshafts are forged from alloy steel and harder materials are harder to process. In the past for medium-sized crankshaft machining more turning technology. In the turning process, although the use of lower cutting speed and depth, but often collapse occurs, the production efficiency is very low. And the working hours about half of the total working hours, such as 16V240 diesel engine crankshaft, machining hours for 148 hours, of which 84.5 hours of turning time, accounting for about 57%. because