Pre-forging die for forging aluminum alloy wheel

Abstract

A pre-forging die for forging an aluminum alloy wheel comprises an upper die plate and a lower die plate. A female die is downward fixed to the upper die plate. A male die is upward fixed to the lower die plate. A circle of a spigot boss is arranged on the periphery of the male die. A positioning edge matched with the spigot boss of the male die is arranged on the periphery of the female die. A closed forging cavity is formed between the female die and the male die. A lower ejector rod which upward ejects a workpiece is arranged right at the center of the male die. An upper ejector rod which downward ejects the workpiece is arranged right at the center of the female die. The workpiece can be pressed on the male die through the upper ejector rod arranged right at the center of the female die, the female die retreats, and therefore the die releasing process is achieved, the traditional method that a die is first lifted and then released is avoided, and damage caused when the workpiece collides with the die is avoided; the workpiece is ejected out of the male die through the lower ejector rod arranged right at the center of the male die, and therefore the forging process is achieved; compared with a traditional die, the pre-forging die has the advantages of being free of die holding, easy to release and not prone to strain. By means of the pre-forging die, materials are saved, abraded pieces can be conveniently loaded and unloaded, and mechanical performance of products can be ensured.

Description

technical field [0001] The invention relates to a die, in particular to a pre-forging die for forging an aluminum alloy wheel. Background technique [0002] The forging method of aluminum alloy wheels began in China at the beginning of this century, which is a new technology. Forged aluminum alloy wheels have been widely used in passenger cars, trailers, oil tank trucks, engineering vehicles, school buses and other vehicles, but the forging dies for forging aluminum alloy wheels are still in the growth stage in China, and the waste of traditional open pre-forging dies is serious , It is inconvenient to disassemble and replace wear parts, the forged products are short of materials, have poor mechanical properties, and the product qualification rate is low. The traditional pre-forging die needs to be ejected first and then removed, so that the workpiece is easy to collide with the mold and cause damage to the workpiece. Contents of the invention [0003] The technical pro...

AI Technical Summary

Problems solved by technology

Forged aluminum alloy wheels have been widely used in passenger cars, trailers, oil tank trucks, engineering vehicles, school buses and other vehicles, but the forging dies for forging aluminum alloy wheels are still in the growth stage in China, and the waste of traditional open pre-forging dies is serious , It is inconvenient to disassemble and replace worn parts, the forged products lack materials, have poor mechanical properties, and the product qualification rate is low

Traditional pre-forging molds need to be molded first and then demoulded, so that the workpiece is easy to collide with the mold, causing damage to the workpiece

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