The utility model discloses a bent axle inclined blade cut off die include the mould and with last mould matched with lower mould, the lower surface of going up the mould is equipped with the drift in vertical direction facial make -up, the drift is arc shape, the lower mould middle part is seted up flutedly downwards, is equipped with a plurality of locating pieces in this recess, the upper surface of locating piece tip is equipped with the plane of orientation, the bent axle is installed on the plane of orientation, the lower mould is by the both sides of the plane of orientation of locating piece department certain angle R that inclines from inside to outside. Certain angle R because the both sides of the plane of orientation of the locating piece of lower mould department slope from inside to outside, the side cut position at forging middle part is earlier through the lower mould shear deformation under the combined action of lower mould and last mould, along with last mould continues to push down, takes place the shear deformation gradually under the combined action of last mould and lower mould to the side cut position in the outside in the middle part of the forging. Consequently, the instantaneous side cut position of forging is less, and the power of cutting edge is less, has reduced the deformation of whole forging and balance plate for side cut technology is more stable.