【摘要】 对球头铣刀铣削力建模进行了研究。在Z-map仿真模型的基础上,提出了识别加工中参与切削的切削刃单元的方法,通过考虑刀具偏心和刀具变形对瞬时切削厚度的影响,推导出了瞬时切削厚度的表达式,由铣削力和切削负载之间的关系,建立了球头铣刀三轴铣削力仿真模型。铣削力仿真计算与铣削实验的对比表明在考虑刀具偏心和刀具变形后所建立的铣削力模型能够对铣削力进行准确的预测。更多还原

【Abstract】 The model of ball-end cutter milling forces is studied. The algorithm to identify the engaging cutting edges is proposed using Z-map simulation model in ball-end milling process. The expression of instantaneous chip thickness is discussed by analyzing the effects of cutter eccentricity and deflection. Then ball-end cutter milling forces simulation model is established on the basis of the relationship between milling force and chip load. At the same time, the simulation results agree well with those obtained from experiments and show that the presented milling forces model considering cutter eccentricity and deflection can predict milling forces correctly.更多还原