波形刃铣刀铣削力的预报数值模型

Numerical model to predict milling forces for a wavy-edge milling cutter

为优化波形刃铣刀的设计和正确应用 ,建立一个离散的数值模型来预报铣削力的大小。根据已有的单位铣削力模型和它与切屑厚度的关系 ,获得局部铣削力的大小。将铣刀沿轴线方向划分成小的铣刀片 ,把作用在铣刀片上的局部铣削力叠加到一起 ,从而建立起离散的数值切削模型。提供了计算铣削力和参数标定的算法。通过几组实验 。

A discrete numerical model was developed to analyze the complicated edge shape of a wavy-edge milling cutter. The local cutting force was calculated using the local cutting force model from the relationship between the local cutting forces and the chip load. The cutter was divided into discs along the axial direction with the cutting force equal to the sum of the local cutting forces acting on each cutter edge for all discs engaged in the cut. This paper describes the algorithmic to calculate the total forces and the parameter calibration. Experiments confirm the numerical model's accuracy.