What is the precision blanking of the ring gear plate?
The radius of RC is generally not more than 0.2mm. and its role is to expand the pressure stress distribution area to resist cracks in the condition of punching, blanking contour surrounding material is strong three pressure state, the plasticity is greatly improved, the gap is very small. The general fineblanking double gap value not more than 1%, the thickness of the material is almost pure shear, fine blanking section quality is high.
With the first tooth ring sheet blanking around the pressure (although it would have the common blanking pressure stripper plate, but not called spring stripper and called ring gear plate) second counter top rod is arranged in the concave mold, exert greater pressure on the punch plate material and the cutting edge of die made of small fillet
The precision blanking of ring plate is called fine blanking and fine blanking, and it is very different from ordinary blanking. Strictly speaking, fine blanking is very different for the deformation force created by sheet metal
