Forging and pressing die

Abstract

The invention relates to a forging and pressing die. The forging and pressing die comprises an upper die base, a fixing plate, an upper combination die, a lower combination die and an ejection device,wherein a guide sleeve is arranged on the bottom surface of the upper die base; a guide column is arranged in the guide sleeve in a penetrating mode; the guide column is fixed on a lower die base; athrough hole is formed in the center of the lower die base; an ejector rod movably penetrates into the through hole; the fixing plate is arranged on the top surface of the lower die base; the upper combination die comprises an upper outer die, an upper inner die and an upper die core; the upper die core is a combination body composed of an upper plate body and a round rod; the combination body isarranged in a second upper groove of the upper inner die; a frustum-shaped hole is formed in the bottom surface of the upper plate body; the lower end of the round rod extends out of a first through hole and is arranged in the frustum-shaped hole; the lower combination die comprises a lower outer die, a lower inner die and a lower die core; and an inverted frustum-shaped hole and a residual material groove are formed in the top surface of the lower die core. The forging and pressing die aims to solve the problems that in the prior art, according to a forging and pressing die, the size deviation of a forge piece is prone to being too large, a die cavity is prone to generating plastic deformation, the sudden change position of the inner wall of the die cavity is prone to cracking, and the forge piece is prone to deformation during discharging.

Description

Technical field [0001] The invention relates to the technical field of forging, in particular to a forging die. Background technique [0002] The forging die is a die used in the forging process. The raw material is plastically deformed in the forging die under the action of external force to obtain parts of the required shape and size. [0003] The utility model patent of the authorized announcement number CN207508191U discloses a closed forging die. The main technical solution is: the upper die is connected to the upper punch, the upper punch is connected to the lower punch, and both the upper punch and the lower punch are pressed in In the cavity of the lower die, the gap between the upper punch and the cavity is small, and the upper punch just presses into the cavity. The advantage is that the forging will not form flash; but when the cavity of the forging die is in the closed state, the die The volume of the cavity is constant, and the volume of the blank is deviated. When th...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems that the forging die in the prior art tends to cause excessive dimensional deviation of the forging, the die cavity is prone to plastic deformation, the abrupt position of the inner wall of the die cavity is prone to cracking, and the forging is prone to deformation during unloading, the present invention provides a forging die , the precision of the forging is high, the cavity is not easy to produce plastic deformation and cracking, and the forging is not easy to deform when unloading

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