高能效高速稳态铣削参数优化

Optimization of high speed milling parameters with stable domain for high energy efficiency

为了提高铣削加工的能量利用率,提出了一种以无颤振切削为约束条件,以能量利用率为优化目标的铣削参数优化方法.基于机床的能耗特性,建立了提高能量利用率的无颤振铣削参数优化模型.利用切削稳定域图确定主轴转速的优化区间,利用切削力、切削功率、切削速度等条件确定切削深度、切削宽度及进给速度的优化区间,并通过合理选择各参数的优化步长快速获得切削参数.以五轴雕铣机为实验机床,45#钢为切削材料进行了验证试验,结果表明,该参数优化方法使能量利用率得到了较大提高.

In order to improve the energy utilization ratio of milling process, a milling parameter optimization method through taking chatter-free cutting as the constraint condition and energy utilization ratio as the optimization target was proposed. Based on the energy consumption characteristics of machine tool, the chatter-free milling parameter optimization model to improve the energy utilization ratio was established. The optimization region of spindle speed was determined with the stable domain diagram of cutting, and the optimization regions of cutting depth, cutting width and feed rate were determined with such conditions as the cutting force, cutting power and cutting speed. In addition, the cutting parameters were quickly obtained through reasonably choosing the optimization intervals of various parameters. The verification experiments were carried out through taking a five-axis engraving and milling machine as the test machine tool and 45＊ steel as the cutting material. The results show that the proposed parameter optimization method can greatly improve the energy utilization ratio.