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随着国内铁路运输朝着高速、重载方向发展,以及国外机车市场的扩展,无论对内燃机车或电力机车的运用要求在不断提高,不仅是应对产品设计的复杂性和精度,还是满足加工速度和生产效率,对生产设备应用的要求不断提升。进入21世纪以来,中国铁路呈现出蓬勃发展的态势,高速客运、重载货运是铁路技术快速发展的重要特点。尤其是“十一五”期间国家明显加大了对铁路运输线路建设的投入,至2009年末,全国铁路运营里程已达到8.6万km,跃居世界第二位,到2012年将达到11万km,其中电气化线路将达到50%以上。按照国家中长期铁路网规划,至2020
With the development of domestic rail transport in the direction of high speed and heavy load as well as the expansion of the overseas locomotive market, the demand for the use of diesel locomotives or electric locomotives is constantly increasing not only in coping with the complexity and precision of product design, but also in meeting the processing speed And production efficiency, the application of production equipment requirements continue to improve. Since entering the 21st century, China’s railway has shown a booming trend. High-speed passenger and heavy-haul freight transport are important features of the rapid development of railway technology. In particular, during the 11th Five-Year Plan period, China obviously increased its investment in the construction of railway lines. By the end of 2009, the national railway mileage had reached 86,000 km, ranking second in the world and reaching 11 by 2012 Wan km, of which electrified lines will reach more than 50%. According to the national medium and long-term railway network planning, to 2020