随着我国铁路运输的快速发展,为了适应大量新线建成投产和机车车辆更新换代的需要,高速动车组、大功率机车、大型养路机械等新技术装备将进入密集运用的时期,对于铁路领域的企业新产品零件越来越复杂,精度也越来越高,传统的加工方 With the rapid development of China’s railway transport, in order to meet the needs of a large number of new lines put into operation and the replacement of rolling stock, new technologies and equipment such as high-speed EMUs, high-power locomotives and large-scale maintenance machinery will enter a period of intensive use. More complex parts of new business products, precision is also getting higher and higher, the traditional processing side