Non-flash die for extruding aluminum alloy shell parts

Abstract

The invention relates to a non-flash die for extruding aluminum alloy shell parts. The non-flash die mainly comprises a female die, a male die, a cavity, curved surface teeth, a left female die, a right female die, positioning holes, screw holes, a threaded connection part and pin holes and is improvement on an extrusion forming die aiming at the condition that flashes are easily generated in the process of extruding the aluminum alloy branched shell parts. According to the non-flash die, the curved surface teeth are formed additionally on the conical part of the female die, so that oddments and flowing metal which are generated in the extrusion process are restrained and blocked, and the flashes are prevented from being generated; through introduction of the male die, mutually meshed curved teeth are increased, and the residual free space in which the flowing metal can flow is reduced, so that the probability of forming the flashes is reduced; and therefore, the flashes are not generated when the branched shell parts are extruded, the extrusion forming quality and efficiency are improved, metal materials are saved, and the non-flash die is very ideal and can be applied to extrusion forming of various similar parts.

Description

technical field [0001] The invention relates to a flash-free mold for extruding aluminum alloy shell parts, which belongs to the technical field of mechanical mold design and application. Background technique [0002] With the development of science and technology, there are more and more types of parts and components, and the precision requirements are getting higher and higher. In the aerospace and weapon industries, there are many branch and rib shell parts. Not only are the shapes complex, but their strength requirements In order to reduce the weight of equipment, light alloys, such as aluminum alloys, are often used, which requires the forming process to reach a new technical height. [0003] Aluminum alloy is often used as the material of shell branch parts, and its processing methods are mostly formed by metal molds. In traditional open molds, flash grooves must be designed. The weight of the formed part flash reaches 10-35% of the total weight. , and then use machin...

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Problems solved by technology

[0003] Aluminum alloy is often used as the material of shell branch parts, and its processing methods are mostly formed by metal molds. In traditional open molds, flash grooves must be designed. The weight of the formed part flash reaches 10-35% of the total weight. , and then use machining to remove the flash, which not only wastes a lot of material and energy consumption, but also reduces the service life of the mold and increases the processing cost of the parts. a problem

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