【摘要】 对两种型号曲轴的半精加工圆角滚压工艺和疲劳强度进行了研究，结果表明，选择合 适的精磨余量和滚压工艺参数，曲轴疲劳强度可提高 175％左右，圆角处疲劳极限应力达 5 52～ 605 N/mm2，曲轴的疲劳强度较之精磨后滚压没有下降。更多还原

【Abstract】 The fillet rolling processing parameters of two types of crankshafts af ter semi－finish machining were investigated and their bending fatigue limits w ere measured. Test results showed that the fatigue limits of the rolled specimen s could be increased by 175％ or so if the proper allowance of finish grinding a nd the optimum parameters of fillet rolling were elected, with the bending fatig ue stresses at the pin fillets being up to 552～ 605 N/mm2. Therefore, finish gr inding had little effect on the fatigue strength of crankshaft rolled after semi －finish machining.更多还原