The main components of the guide post and guide sleeve unit of the mold (2)

6. Countermeasures against side pressure of the punch

It is the best ideal state that the punch bears an equal load on the left and right sides during stamping processing (that is, the lateral pressure is zero). When the punch bears lateral pressure, the upper die and the lower die will be displaced in the lateral direction, resulting in the part of the die gap. It becomes larger or smaller (uneven gap) and cannot get good precision stamping. The countermeasures for the lateral pressure of the punch are as follows:

(A). Change the processing direction

(B). The products processed on one side (punching, bending, stretching, etc.) should be arranged in two rows

(C). Punching The head or the die is equipped with a side pressure stopper, and the side of the cutting edge is provided with a guide part (especially for cutting and breaking processing).

7. Design of the back pressure plate

The main working parts (punch, pressure plate, die) will bear the surface pressure in the back of stamping process. When the punching pressure is higher than the surface pressure, a back pressure plate (especially the back of the punch and die sleeve) should be used. Back pressure plate There are two forms of use: partial use and full use.