Axial-radial split extrusion die for thin-walled wide-flange vertical rib

Abstract

The invention discloses an axial-radial shunt extrusion forming die of a thin-walled wide-flange vertical rib cylindrical piece. The axial-radial shunt extrusion forming die of thin-walled wide-flangevertical rib cylindrical piece comprises a male die core shaft, a split female die and a hydraulic cylinder fixing plate. The split female die is arranged below the male die core shaft. The split female die is arranged above the hydraulic cylinder fixing plate. A die cavity is formed among the male die core shaft, the split female die and the hydraulic cylinder fixing plate. The male die core shaft is fixedly connected with a hydraulic machine upper sliding block through a male die fixing plate and an upper die plate. The outer side of the split female die is connected with a hydraulic cylinder. The hydraulic cylinder is fixed to the hydraulic cylinder fixing plate. A bottom flange forming space is arranged between the hydraulic cylinder fixing plate and the male die core shaft. Accordingto the axial-radial shunt extrusion forming die, a thin wall, a flange and external longitudinal ribs of the flange can be formed at the same time through one-time die filling, the manufacturing procedure is shortened, the labor intensity is reduced, and the axial-radial shunt extrusion forming die has the advantages of being short in manufacturing procedure, high in precision, low in cost and the like.

Description

technical field [0001] The invention relates to the technical field of precise extrusion forming, in particular to an axial-radial split extrusion forming die for a thin-walled wide-flange vertical rib cylindrical part. Background technique [0002] Thin-walled and wide-flange cylindrical members with longitudinal ribs are widely used in aerospace, transportation, equipment manufacturing and other fields. 1. The strength plays a decisive role in the performance of the equipment. The structural characteristics of this type of component are: the wall of the cylinder is thin, it has a wide flange, the wall thickness difference of its section is large, the wall thickness of the flange is greater than the wall thickness of the cylinder, and there are many longitudinal ribs on the outer surface, and its mechanical High performance and dimensional accuracy are required. [0003] At present, the main manufacturing process of such components is welding and forming after steel plate...

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Problems solved by technology

[0003] At present, the main manufacturing process of such components is welding and forming after steel plate machining, and its defects are: low product strength, poor impact resistance, fatigue cracks easily appear in the welded part of the material, poor mechanical properties, and low overall life. And the overall mass is relatively large, which cannot meet the lightweight requirements of equipment

However, the conventional extrusion molding method requires multiple mold loading and demoulding to form, and the conventional extrusion adopts the process of flaring and then flanging, which is likely to cause folding defects in the longitudinal ribs on the outer side of the cylinder.

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