Integral Extrusion Die for Complicated Inner Ring Rib of Light Alloy Shell

Abstract

The invention discloses an integral extrusion forming mold for a light alloy shell complex inner ring rib. The integral extrusion forming mold comprises an upper mold assembly, an inner support structure assembly and a lower mold assembly, the lower mold assembly comprises a concave mold for accommodating a light alloy cylindrical member, the upper mold assembly comprises a convex mold for downward extrusion of the light alloy cylindrical member, and the inner support structure assembly comprises an upper inner support and a lower flexible filling body inner support; and flexible materials areadopted for making a sand model needed by the inner ring rib through the lower flexible filling body inner support according to the shape of the lower portion of the inner ring rib, the lower flexible filling body inner support is placed in the lower part of the inner ring rib, the shape of the upper portion of the inner ring rib is formed through the upper inner support, and the upper inner support is placed on the upper part of the inner ring rib. By means of the integral extrusion forming mold, the material utilization rate is greatly improved, difficulties caused by precise plastic forming of a sectioning inner support structural material are overcome, the problem of the jamming during mold release is solved, and simultaneous forming of the inner ring rib during overall plastic forming of a large complex light alloy shell member is achieved.

Description

technical field [0001] The invention relates to the technical field of plastic processing and forming of metal materials, in particular to an extrusion forming die for the inner ring ribs of a large and complex light alloy shell. Background technique [0002] With the development of aerospace technology, the demand for the integration of large and complex light alloy shell components is becoming more and more intense. However, there are certain difficulties in the development of key complex shell components, as follows: high development cost, long cycle, low forming dimensional accuracy, mainly relying on machining to ensure accuracy; large and complex light alloy shells are prone to defects during the forming process. The performance fluctuates greatly and the quality is unstable, resulting in low reliability and low pass rate. The precise forming technology of key and complex shell components in some advanced weapons and equipment has not been broken through in China, and...

AI Technical Summary

Problems solved by technology

During hot extrusion, part of the metal will flow into the gap of the split mold, forming burrs, resulting in the loss of part of the material and the jamming problem when the mold is released

At the same time, the processing and assembly requirements of the support structure mold in the split valve are relatively high, and it is difficult to realize accurately, such as Figure 2-2a shown

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