Patent ID: 6227090
Filing Date: 2001-05-08
Classification: B23D,Y10T

Abstract:
An oscillating assembly for pivoting a blanking die that is constructed and arranged to cut blanks from sheet material, said oscillating assembly comprising:a die supporting structure that pivots about a pivot axis, said die supporting structure being constructed and arranged to receive and support said die such that said sheet material can be fed into said die in a feeding direction and such that said pivoting of said die supporting structure pivots said die relative to said sheet material;a reversible rotary driving assembly that has a rotatable output shaft, said driving assembly being constructed and arranged to rotate said shaft in opposing first and second rotational directions;a linearly movable die driver operatively connected to said output shaft such that (a) rotating said shaft in said first rotational direction thereof moves said die driver generally linearly in a first die driving direction and (b) rotating said shaft in said second rotational direction thereof moves said die driver generally linearly in a second die driving direction opposite said first die driving direction;said die driver being operatively connected to said die supporting structure such that (a) moving said die driver in said first die driving direction thereof as aforesaid pivots said die supporting structure to a first cutting position wherein said blanking die can cut a first blank from said sheet material fed therein and (b) after cutting said first blank and advancing said sheet material relative to said die in said feeding direction, moving said die driver in said second die driving direction thereof as aforesaid pivots said die supporting structure to a second cutting position wherein said blanking die can cut a second blank from said sheet material.