基于有限元仿真的曲轴内铣加工参数优化

曲轴内铣技术因为其在加工质量和加工效率方面的优势被广泛应用于曲轴粗加工工艺上，但是内铣加工参数的选取缺少相应的标准及方法。通过有限元仿真建立曲轴内铣切削有限元模型，用仿真得到的铣削力进行曲轴变形仿真，从而预测曲轴轴颈圆柱度误差。研究发现:曲轴轴颈圆柱度误差随着刀盘转速增大而逐渐减小，且减小的速率逐渐降低。 

Optimization of cutting parameters in crankshaft inner milling based on finite element simulation

Crankshaft inner milling technology is widely used in crankshaft rough machining because of its advantages in machining quality and efficiency. However, the selection of internal milling parameters is lack of corresponding standards and methods. In this paper, through the finite element simulation, a finite element model of crankshaft inner milling is established. The simulation of crankshaft deformation is implemented by using the milling force obtained from the inner milling simulation so as to predict the cylindricity error of crankshaft journal. It is revealed that the cylindricity error of crankshaft journal decreases with the increase of cutter speed, and the rate decreases gradually.