高速线切割加工工艺模型与参数优化的研究

Research on process model and parameter optimization of WEDM

目的建立高速线切割加工质量和加工速度的数学模型并在可控参数内进行参数优化。方法以45号钢为加工对象设计二次通用旋转组合试验,并基于多项式曲线拟合建立加工质量和加工速度的数学模型,最后应用遗传算法对模型进行参数优化。结果与结论该模型较准确地反映出机床的加工特性,具有一定的拟合精度和理想的预测精度,其加工参数的优化选取对操作者有一定的指导作用。

Objective--To establish the mathematics model of processing quality and processingspeed and optimize parameter within the controllable parameters. Methods--The experiment of quad-ratic universal rotary assembly was designed for processing object of 45# steel, and then the mathe-matical model of processing quality and processing speed was established on the basis of the method ofmultiplication curve matching. Finally, the model parameter was optimized with genetic algorithms.Results and Conclusion--Experimental results show that the model can not only accurately reflect processing character of machine tools but also have fitting precision and perfect prediction ability, In addi-tion, it has definite guidance function to the operator.