提 升机主轴及风机轴在使用中要承受较大的交变负荷 ,为了减少应力集中 ,设计上轴肩圆角均采用大R的结构 ,轴肩圆角提出了较低的粗糙度 ,且形状精度要求也很高 ,加工却较为困难。目前 ,国外常用的加工方法是数控加工 ,而国内的加工方法仍以成形法及轨迹法为主 ,由于这些圆弧要 Lifter spindle and fan shaft in use to withstand greater alternating load, in order to reduce the stress concentration, the design of the shoulder shoulder are large R structure, shoulder fillet low roughness, and the shape Accuracy requirements are high, processing is more difficult. At present, the processing methods commonly used in foreign countries are CNC machining, while the processing methods in China are still based on the forming method and the locus method. Since these arcs