1、兰州交通大学毕业设计(论文)1RD2 型车轴加工工艺设计摘要为了使车辆满足高速重载的要求，必须对车辆进行技术改造。车轴作为车辆转向架的典型零件，它的修造是车辆改造的重要环节。通过分析货车滚动轴承车轴的现状和铁道车辆车轴加工工艺的发展历程，设计了滚动轴承车轴的加工工艺。根据 RD2 型车轴的结构原理，设计出 RD2 型车轴的详细的加工工艺。RD2 型车轴的加工精度要求较高，所以必须安排的更加合理的粗加工和精加工工艺。由于卸荷槽对车轴轴颈的影响，车轴会出现裂纹和损伤。受损的车轴可能会发生断裂，导致行车事故的发生。通过分析铁道车辆车轴断裂的原因，提出可行的解决方法。分析车轴强度和寿命的计算方法，提出
2、提高车轴疲劳寿命的措施。通过这些措施，可以增强车轴的寿命。关键词： RD2 型车轴；加工工艺；卸荷槽；强度与寿命兰州交通大学毕业设计(论文)2Design of Processing Technology for the RD2 AxleAbstractIn order to make the axle to meet the requirements of high-speed and overloaded, the vehicles must be transformated in technology. As the typical parts of the vehicles bogie
3、, the axle must be greet transformated in processing technology. With analysising the status of the van rolling bearing axle and the the development of axle machining process, design processing technology for the van rolling bearing axle. According to the structural principle of the RD2 axle, design
4、 processing technology for the RD2 axle. The precision level of the RD2 axle machining is higher, so the process of roughing machining and accurate machining must be arranged reasonably.Because the the influence of the unloading slot in axle neck, the axle will appear crack and damage. The damaged a
5、xle may be fractured, so the accident will happen. By analysising the reason of the vehicles axle fractured, find the way of solve problems. Analysising the methods of compute the axle strength and service life, the measures that improving the axle life is founded. By doing the measures, the axle service life will be extended.Keywords: the RD2 axle ; machining process; unloading slot; strength and service life
