Combination of mould drift

The utility model discloses combination of mould drift is used for the hole of shaping cold forging spare product, combination of mould drift includes the mounting and sets up the last cushion on the mounting, lower cushion and drift, the mounting is including the last stomidium that runs through and stomidium down, goes up cushion and cushion down and lies in the upper end and downthehole and go up cushion stack cushion under, and upward the cushion is equipped with curved depressed part, and lower cushion is equipped with curved bulge, curved bulge is acceptd in curved depressed part, during the use, when the drift compresses tightly, contact surface through two circular arcs just can with go up the cushion, down the straightness's that hangs down that leads to the fact of cushion and equipment accuracy deviation part add and correct, when the finished product shaping, also can be through the deviation of adding and correcting the straightness that hangs down of two arc surfaces automations when the part to