The fatigue strength can greatly be improved by the method of the eng ine crankshaft fillet rolling, but the deformation may be produced at the same t ime.

• 发动机曲轴圆角滚压可以极大地提高曲轴的疲劳强度,但滚压后会产生变形,传统的弯曲力校直方法会降低由滚压所产生的压应力。