中低速数控铣削参数优化技术研究及应用

摘要

Average cutting coefficient model is used to simulate cutting forces in NC machining.Based on cutting force simulation, spindle speed, feed rate, depth of cut and width of cut are optimized considering confinements of machine tool, cutter and workpiece comprehensively.The target of optimization is categorized into machining efficiency, cost of machining and combination of efficiency and cost.OptiCut, aimed at optimize milling parameters in medium spindle speed is developed under Visual C++ and Matlab environment.With this software milling parameters in GH4169 machining are optimized.According to the experiment, it is easy to conclude that OptiCut is effective in improving machining efficiency.%采用平均铣削力系数模型对数控加工过程中的铣削力进行仿真预测.在此基础上,综合考虑数控加工过程中机床、刀具以及工件3方面限制加工效率的因素,对主轴转速、进给速度、径向切宽以及轴向切深4个参数进行优化.利用VC与Matlab编程,开发了"中低速数控铣削过程力学仿真与参数优化系统".针对航空难加工材料GH4169,在SandviK推荐参数基础上进行仿真优化.结果表明,基于力学仿真的数控铣削参数优化技术在难加工材料加工中可提高加工效率12%～378%.