曲轴是发动机的主要零件之一,随着动力机械的迅速发展,对曲轴的加工精度要求越来越高。曲柄半径的超差,会使发动机的压缩比产生变化,增大发动机的噪声和机械冲击,影响发动机性能,严重时会造成各缸工作不一致,影响排放或使动力不足。本文作者根据10年来从事曲轴磨削工作的经验,通过对各种影响因素的分析,总结出了精磨曲轴连杆轴颈时提高曲柄半径 Crankshaft is one of the main engine parts, with the rapid development of power machinery, crankshaft machining accuracy requirements are getting higher and higher. Crank radius of the ultra-poor, will make the engine compression ratio changes, increase the engine noise and mechanical shock, affecting the engine performance, serious work will cause inconsistencies in each cylinder, affecting emissions or lack of motivation. Based on the experience of 10 years engaged in crankshaft grinding, the author summarizes the factors that improve crank crank radius