Conclusions from the experiments indicate that a plate with given thickness and the influence of the inclination α of die with inclination edge the blanking power made are of major significance, and the die gap between the punch and the die comes second.

In this paper general calculating method is given to calculate the forces of various punching dies with different inclined edge and comparisons are made among the different forces of various punching dies.

The influences of flank surface and edge quality of PCD cutting tool on cutting surface quality when machining nonferrous metal are studied in this paper.

In the CAD for blanking die,how to correctly discriminate the dimension types of the edge is a key work.

A Series of the standard edge samples made of 45,60 and GCr15 steels is prepared to test sharpness in the process of cutting.

Through two kinds of technologies on trimming die of automobile cover parts introduced, the technology and characteristic of die blade were introduced by using repair welding.

The design method of faceplate oblique edge blanking die, die structure, punch structure and matrix structure were introduced in detail.

Using bevelled punch and step punch in blanking die, carried on the rational distribution to blanking force, reduced the blanking force well which the press equipment need, and the question of insufficient press equipment pressure was solved.