Forging die for forging wheel core forging stock

Abstract

The invention discloses a forging die for forging a wheel core forging stock, which can ensure that the central lines of an upper die and a lower die are coincided with each other. The forging die comprises the upper die and the lower die which are provided with die cavities matched with the wheel core forging stock, wherein the outer side of the die cavity edge of the upper die is provided with an annular boss; the outer side of the die cavity edge of the lower die is provided with an annular recess; the inner wall of the annular boss is provided with a conical upper guide surface; and the inner wall of the annular recess is provided with a lower guide surface matched with the upper guide surface. The lower guide surface on the outer side of the die cavity edge of the lower die can fully bear horizontal force in the pushing process of the upper die so as to ensure that the central lines of the upper and lower dies are coincided with each other and reliably ensure the quality of the forging stock obtained by pressing.

Description

technical field [0001] The invention relates to a forging die, in particular to a forging die for forging a wheel core forging blank. Background technique [0002] When using a press equipped with a forging die to press a wheel core billet weighing more than 600 kilograms into a wheel core forging billet, it is key to ensure that the centerlines of the upper and lower dies are consistent. For this reason, three guide columns are welded on the outer surface of the lower mold, and the upper mold is pressed together along the guide columns during pressing. During the pressing process, the blank cannot always keep the vertical force running downward during the deformation process, and it is inevitable Since most of the force is transmitted to the guide column through the upper mold, when the guide column cannot withstand the horizontal force, it will bend, resulting in the loss of guidance of the upper and lower molds In this way, the correct alignment of the upper and lower di...

AI Technical Summary

Problems solved by technology

For this reason, three guide columns are welded on the outer surface of the lower mold, and the upper mold is pressed together along the guide columns during pressing. During the pressing process, the blank cannot always keep the vertical force running downward during the deformation process, and it is inevitable Since most of the force is transmitted to the guide column through the upper mold, when the guide column cannot withstand the horizontal force, it will bend, resulting in the loss of guidance of the upper and lower molds In this way, the correct centering of the upper and lower dies cannot be guaranteed, that is, the center lines of the upper and lower dies are inconsistent

In this way, the quality of the forging billet obtained by pressing cannot be guaranteed, resulting in waste products

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