A high-strength complex aluminum alloy special-shaped outer hexagonal seat sheet extrusion final forming die

Abstract

The invention discloses a final extrusion forming die for a high-strength complicated aluminum alloy special-shape outer hexagonal base metal plate. The final extrusion forming die comprises a final forming convex die and a final forming concave die, wherein openings of the final forming convex die and the final forming concave die are special-shape outer hexagonal; the size of the opening of the final forming concave die is the same as the size of the final forming convex die; the center of the final forming convex die is provided with a final forming conical convex surface; three V-shaped final forming convex edges are upwards formed on three straight edges; the V-shaped final forming convex edges and the final forming conical convex surface are in smooth transition; a trumpet-shaped drainage final forming convex sector-shaped surface is formed by the final forming conical convex surface between the two adjacent V-shaped final forming convex edges; the convex sector-shaped surface is further provided with a sector-shaped resistance concave cavity; the sector-shaped resistance concave cavity is enlarged gradually on the final forming conical convex surface from the top to the bottom; a plane region is formed at the bottom of the trumpet-shaped drainage final forming convex sector-shaped surface and a plane region is formed between the V-shaped final forming convex edges and the edge of an arc-shaped edge; a V-shaped high-tendon final forming cavity is formed in each V-shaped final forming convex edge.

Description

technical field [0001] The invention belongs to the plastic precision forming processing technology of metal materials, specifically belongs to the field of light alloy precision forming, and particularly relates to the precise extrusion of high-strength and complex aluminum alloy special-shaped outer hexagonal seat plates by using pre-forming dies, partial loading dies, and final forming dies take shape. Background technique [0002] Complex high-strength aluminum alloy special-shaped outer hexagonal seat sheet parts are widely used in aerospace and equipment manufacturing fields, and are an important part and main load-bearing component of the equipment to buffer the instantaneous large impact force. The structural shape of the component is complex, the shape is asymmetrical, there are high ribs inside and outside, the inside is V-shaped with high rib height-to-width ratio ≥ 3, the cross-sectional shape is complex, and the wall thickness difference is large. Ordinary over...

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Problems solved by technology

The structural shape of the component is complex, the shape is asymmetrical, there are high ribs inside and outside, the inside is V-shaped with high rib height-to-width ratio ≥ 3, the cross-sectional shape is complex, and the wall thickness difference is large

Ordinary overall extrusion molding die is used for one-time extrusion loading and forming. The forming pressure and load of the processing equipment are relatively large, and the loss of processing equipment and mold wear are large; at the same time, it is easy to fold defects at the V-shaped high ribs; material utilization rate Low, not conducive to mass production of products

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