Butterfly-shaped cylinder bottom closed die forging structure

Abstract

The invention provides a butterfly-shaped cylinder bottom closed die forging structure. A die assembly concave edge is arranged on the edge of a lower die, and a cavity in the lower die is higher than the die assembly concave edge; and the edge of an upper die is provided with a lock catch matched with the die assembly concave edge, after die assembly, the lock catch is clamped on the die assembly concave edge to seal a casting cavity, and in the vertical direction, the angle between the vertical edge of the lock catch and the vertical edge of the die assembly concave edge is 3.5-5 degrees. The butterfly-shaped cylinder bottom closed die forging structure has the advantages that under the condition that closed die forging is adopted, a forge piece is free of flash waste, materials are saved, and the material cost is reduced; no residual flash exists at the outer circle, the quality of the forge piece is improved, the machining allowance is reduced, and the production efficiency is improved; and when the forge piece is forged, the spherical surface faces upwards, and the oxide skin of a spherical part is reduced.

Description

technical field [0001] The invention relates to the field of die forging, in particular to a butterfly-shaped cylinder bottom closed die forging structure. Background technique [0002] Green Company mainly produces coal mine hydraulic supports, and the cylinder bottom of the column in the support is the key product; there are defective products with folded jaws in each batch of forgings, and the folded parts need to be planed and welded in the later stage, which may cause liquid leakage at the bottom of the outer cylinder , which greatly affects the quality of forgings. Such as Figure 5 with Image 6 As shown, there is flash in open die forging, which increases the material cost; in addition, there is residual flash on the outer circle of open die forging, and the outer circle cannot be clamped during subsequent processing, but the jaw step on the spherical surface can only be clamped, making it impossible to cancel the jaw step , As a result, the ball can only face down...

AI Technical Summary

Problems solved by technology

[0002] Green Company mainly produces coal mine hydraulic supports, and the cylinder bottom of the column in the support is the key product; there are defective products with folded jaws in each batch of forgings, and the folded parts need to be planed and welded in the later stage, which may cause liquid leakage at the bottom of the outer cylinder , which greatly affects the quality of forgings

like Figure 5 and Image 6 As shown, there is flash in open die forging, which increases the material cost; in addition, there is residual flash on the outer circle of open die forging, and the outer circle cannot be clamped during subsequent processing, but the jaw step on the spherical surface can only be clamped, making it impossible to cancel the jaw step , resulting in only the ball face down when forging, affecting the quality of forgings

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