Abstract: With regard to the leading defects existing in the current suspending fine blanking dieholder, a one-orientation fine blanking dieholder which has adjustable oriented precision and an elastic structure with gas-liquid combination is designed. By adjusting the lateral bolts, the clearance that is caused by abrading between the die sleeve and the guiding sleeve will be eliminated. Compared with dishing spring, the elastic structure with gas-liquid combination has the merits of adjustable elasticity and longer elastic deforming stroke. The subtended fine blanking dieholder that realized simultaneity actions of blanking force and opposite force is also designed. Besides, the technics and dies of forceful beading fine blanking and opposite fine blanking are briefly introduced.

Key words: Fine blanking, Sheet metal, Suspending dieholder