基于虚拟加工的数控车削过程优化

NC turing process optimization based on virtual machining

为了优化车削加工过程,提高加工效率,提出基于虚拟加工技术预测实际切削参数,采用数控程序优化实现数控切削过程优化的方法.应用轮廓多边形的工件模型表示法,研究车削过程中瞬时切削深度和切削速度的获取算法,进一步利用优化算法和数控程序修正,实现数控车削过程的优化.实际切削实验和分析对比表明:加工时间显著缩短,充分利用了机床加工能力,优化后的切削过程得到了改善,提高了加工效率。

To improve the machining process and productivity,an optimization method by virtual machining to acquire the machining parameters in turning is presented so that the optimization of machining process can be realized by optimizing the machining parameters in NC programs.The algorithm to acquire the implicit cutting depth and cutting speed based on the profile polygon representation of workpiece is highlighted during virtual machining,and the optimum cutting parameters can be searched with optimization algorithm,and then an optimized machining process is achieved via revising the spindle speed and feed rate in NC a program.The results of controlled actual cutting experiments show that the machining time is reduced significantly and the maximum power of the machine tool is reached.The machining process and productivity are improved with optimization.