A modulus of continuity for producing circular bush is used to car

The utility model discloses an improve the mould utilization ratio and just save a modulus of continuity for producing circular bush is used to car in bush materials area, including last mould and lower mould, the surface of going up the mould is provided with section and a pair of outer section in a pair of, upward lies in inscribe piece and outer sliced rear on the mould and still sets gradually and be used for follow -uply extruding the pressure head of convex closure, 2 at least integer heads, drift, reaming head and blanking head with the bed charge. The utility model has the advantages that: through the equitable diameter of outer cutter and interior cutter and the position relation each other of setting up, can cun reduce with the used material tape measure of circular bush and guarantee the in -process of whole punching press outside that the material between cutter and the interior cutter does not split at the in -process of drawing producing the automobile, the while flow of material is smooth and e