In terms of example of strength shortage of locating ring boss,structure and mechanism of belling die was analyzed to find the defect of belling mechanism.

Through the design of the special structure of a die for bosses, it is introduced that how to avoid the boss being drawn broken in the breakage area.

The simulation model of cutting process was established, and influences of various groove structure parameters, such as the boss height and the ratio of groove width to depth, on cutting process were analyzed.

This paper points out the incompleteness of the tongs for the raised head face of the crank in the small IC Engine,then an improved method is given.

This paper at the base of introducing the structure of KBE system and its key technologies,intelligent parametric design for mold convexity is established by the KF module in the UG,which is three-dimensional module software.